USRobotics Courier Lite - Modem

Courier Lite - Modem USRobotics - Free user manual and instructions

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Product Type External Modem
Brand USRobotics
Model Courier Lite
Dimensions (W x D x H) 15 cm x 10 cm x 3 cm
Weight 300 g
Power Supply AC adapter, 9V DC 500 mA
Interface RS-232 serial (DB-25 connector)
Max Data Rate 33.6 kbps (V.34+)
Fax Speed 14.4 kbps (V.17)
Protocols Supported Hayes AT command set, V.34, V.32bis, V.32, V.22bis, V.22, V.21, Bell 212A, Bell 103
Error Correction V.42 (LAPM, MNP 2-4)
Data Compression V.42bis, MNP 5
Flow Control Hardware (CTS/RTS), Software (XON/XOFF)
Indicators Power, Transmit, Receive, Off-Hook, Carrier Detect, Terminal Ready, Modem Ready
Cable Included Serial cable (DB-25 to DB-25 or DB-9)
Operating Temperature 0°C to 40°C
Storage Temperature -20°C to 60°C
Cleaning Instructions Disconnect from power; wipe with a soft, dry cloth. Do not use liquids or abrasives.
Safety Warnings Do not disassemble; avoid moisture; unplug during thunderstorms.
Repairability No user-serviceable parts inside. Contact authorized service center.

Frequently Asked Questions - Courier Lite USRobotics

How do I connect the Courier Lite modem to my computer?
Use the included serial cable to connect the modem's DB-25 port to an available serial port (DB-9 or DB-25) on your computer. Ensure the cable is securely attached and the power adapter is plugged in.
What is the maximum speed of the Courier Lite modem?
The Courier Lite supports data rates up to 33.6 kbps (V.34+) and fax speeds up to 14.4 kbps (V.17), depending on line conditions and the remote modem.
How do I configure the modem with AT commands?
Use terminal software like HyperTerminal (or PuTTY) to send AT commands. The modem is Hayes-compatible. Common commands: ATZ (reset), ATDT1234567 (tone dial), ATS0=1 (auto-answer on first ring).
Why is the modem not responding to AT commands?
Check the serial cable connection and ensure the correct COM port and baud rate (e.g., 9600) are selected in your software. Verify the modem's power is on and the TR light (Terminal Ready) is lit when the terminal is active.
How can I update the modem's firmware?
Firmware updates are not commonly available for this model. If needed, check USRobotics' legacy support site. Usually, the modem's capabilities are fixed. This model is not flash-upgradeable.
What does each LED indicator mean?
PWR: Power on. TXD: Transmitting data. RXD: Receiving data. OH: Off-hook (line in use). CD: Carrier detect. TR: Terminal ready. MR: Modem ready. Refer to the manual for details.
How do I set the modem to auto-answer incoming calls?
Send the AT command ATS0=2 to answer after 2 rings. To disable auto-answer, send ATS0=0. The modem will also need ATSO=1 for 1 ring. Ensure the phone line is connected to the 'LINE' jack.
Can I use this modem with a VoIP adapter?
Analog modems like the Courier Lite may not work reliably with VoIP due to compression and echo issues. For best results, use a standard analog phone line (PSTN).
What should I do if the modem is not dialing?
Check the phone cable connection to the 'LINE' jack and the wall jack. Listen for a dial tone. If using tone dialing, ensure the command is ATDT. Try adding a comma for a pause: ATDT9,5551234.
Where can I find a user manual for the Courier Lite?
The manual is available for free download on notice-facile.com and other manual repository sites. Search for 'USRobotics Courier Lite manual PDF' or visit the product page directly.

User questions about Courier Lite USRobotics

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Download the instructions for your Modem in PDF format for free! Find your manual Courier Lite - USRobotics and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. Courier Lite by USRobotics.

USER MANUAL Courier Lite USRobotics

USR® Courier® Lite Business Modem User Guide

USR5686G-PRO

USRobotics 32k Business Modium CourierLite

5686G-PRO User Guide

Contents

INTRODUCTION ....3

INSTALLATION....4

Modem Installation....4

Modem Upgrade....7

CONFIGURATION....11

Configuring DIP Switches 11

Accessing and Configuring the Modem Remotely 12

Dial Security....18

Testing the Connection 28

REFERENCE 32

S-Registers 32

Alphabetic Command Summary 46

Flow Control Template 66

Result Code Meanings and Sets 71

Technical Information 75

ASCII Chart....80

Fax Information for Programmers 81

Viewing LEDs....84

WARRANTY 85

REGULATORY 89

INTRODUCTION

Thank you for purchasing the USRobocs Courier Lite 56K Business Modem!

The USR ^® Courier ^® Lite 56K Business Modem with V.Everything ^® technology oers the perfect soluon for both Out-of-Band Management of networks or Point-of-Sale applicaons. Many modems claim reliability, but few match the real-world performance of Courier modems. Even fewer oer the multitude of advanced business features found on this modem including Carrier Loss Redial and Dialback Security. Remote access capabilities let you remotely conjure or troubleshoot modems in Remote Management and other M2M (Machine-to-Machine) applicaons. When failure is not an opon, you need the world-class capabilities that only come from the top of the USR product line.

Product Features

V. Everything Technology

The modem supports all key ITU analog communicaons protocols and many proprietary ones to provide you with ulmate compatibility.

Dial and Dialback Security

The modem includes a robust mechanism for providing dial and dialback security for your network. See the "Dial Security" part of the Configuration section of this guide.

Remote Manageability

The modem can be remotely congured and monitored for the convenience of your local oce. See the "Accessing and Configuring Remotely" part of the Configuration section of this guide.

INSTALLATION

Modem Installation

Physical Features

Top

1 2 OFF ON 56K Business Modem Courier® Lite AA CD RD SD TR CS ARQ/FAX

  1. Power Switch
  2. LEDs

Back

3 4 5 6 7

  1. Line to wall jack
  2. Line to telephone
  3. DIP switches
  4. Serial port
  5. Power input

Side

USRobotics Courier Lite - Side - 1

natural_image 3D rendered mechanical part with a central circular feature and a red arrow labeled '8' pointing to it (no text or symbols beyond the number)
  1. Volume dial

5686G-PRO User Guide

Step One: Prepare for Installaon

  1. Uninstall all other modems * that are installed on your computer. For instrucons, refer to the documentaon for your previous modem or your computer's operang system.

  2. Unplug all data, telephone, and power cords connected to your previous modem(s).

  3. Shut down your computer and power it o.

  4. Locate the serial port on the back of your computer. To find the serial port, look for a port labeled COM, MODEM, RS-232, [0][1], or SERIAL. Do not use the AUX, GAME, LPT, or PARALLEL ports.

Note: If your computer does not have a serial port, use a USB-to-serial cable that is compatible with your computer's operang system.

*If the previous modem was a USRobocs Courier 56K Business Modem, do not uninstall it. The Courier Lite 56K Business Modem uses the same driver as the Courier 56K Business Modem.

Step Two: Connect the Modem to the Computer

  1. Connect one end of the serial modem cable to modem and the other end to your computer's serial port.

USRobotics Courier Lite - Step Two: Connect the Modem to the Computer - 1

natural_image Illustration of a desktop computer tower connected to a black console unit via cable (no text or symbols visible)

Step Three: Connect the Modem to an Analog Telephone Line

Cauon: The Courier Lite 56K Business Modem must be plugged in to an analog phone line only. Plugging your Courier Lite 56K Business Modem in to a digital phone line may damage the modem. Most oce phones are wired through digital lines. Be sure you know what type of line you have.

  1. Plug one end of the telephone cord into the jack on the modem.

  2. Plug the other end into an analog telephone wall jack.

USRobotics Courier Lite - Step Three: Connect the Modem to an Analog Telephone Line - 1

natural_image Illustration of a desktop computer setup with a monitor, tower, and telephone connected to a device (no text or symbols visible)
  1. To connect a telephone through the modem, plug the telephone's cord into the modem's jack.

Step Four: Power Up the Modem

  1. Plug the power adapter into the power jack on the modem and the other end into an electrical outlet.

USRobotics Courier Lite - Step Four: Power Up the Modem - 1

natural_image Illustration of a server rack connected to a tower with power outlets and connections (no text or symbols)
  1. Turn on the modem by switching the power switch on the top of the modem to ON. The CS LED should light.

5686G-PRO User Guide

If the CS LED does not light or if other LEDs light, make sure that only DIP switches (located on the back of the modem) 3, 5, and 8 are in the ON (down) position.

USRobotics Courier Lite - 5686G-PRO User Guide - 1

natural_image Abstract 3D block structure with numbered blocks (1–8) on black background, no text or symbols present
  1. Turn on your computer.

Step Five: Install the Modem Drivers

Windows operang systems should automatically install the modem driver. If the driver does not install automatically, or for other operang systems, visit http://www.usr.com/support.

Uninstallaon

Consult your computer's operang system documentaon for uninstallaon procedures.

Modem Upgrade

Upgrading your Modem

This secon contains informaon about:

  • Checking your modem's software version
    • Geng new operang soware
    • Getting the Flash Loader application
    • Use the Flash Loader application to send the new software to your modem
  • If the Flash Loader doesn't find your modem
  • If your modem doesn't respond after flashing
  • Remote ash

Checking Your Modem's Soware Version

Issuing the ATI7 command produces the following informaon to appear on your terminal screen.

ATI7
USRobocs Courier Lite Conguraon Prole...
Product typeUS/Canada External
Product ID00568607
OponsV32bis,V.80,V.34+,V.90,V.92
Fax OponsClass 1,Class 2.0
Clock Freq92.0Mhz
Flash ROM256k
Ram96k
Supervisor dateMay 2 2018
DSP dateMay 2 2018
Supervisor revV1.0.0
DSP revOF
DAA rev3
Serial Numberxxxxxxxxxxxxx
OK

Check the Supervisor and Digital Signal Processor (DSP) dates found in the screen display. These dates will determine which version of the soware your modem is using.

Geng New Operang Soware

To get the newest version of the Courier Lite 56K Business Modem's operating software, go to the customer support web site at hp://www.usr.com/support.

Geng the Flash Loader Applicaon

To ash new rmware into the Courier Lite 56K Business Modem, you must run the USRobocs Flash Loader applicaon on your computer.

To get the newest version of the Flash Loader applicaon, go to the customer support web site at hp://www.usr.com/support.

5686G-PRO User Guide

Use the Flash Loader Applicaon to Send the New Soware to Your Modem

Run the Flash Loader applicaon.

Navigate to the new soware le.

Aer you choose the soware le that you want to send, the Flash Loader will search your computer's COM ports for the Courier Lite 56K Business Modem.

Note: There must be no other active modems on any of your computer's COM ports.

USRobotics Flash Loader 1.4f ---- USRobotics USRobotics Flash Loader Ver:1.4 Searching for the Modem.

USRobotics Flash Loader 1.4f ---- USRobotics Found Modem on COM5. Initializing, Please Wait.

5686G-PRO User Guide

Once the Flash Loader selects the COM port, it will send the le to the modem.

USRobotics Flash Loader 1.4f ---- USRobotics Programming the Flash <21%> Complete.

All Done... Flash Programming Completed OK

If the Flash Loader Doesn't Find Your Modem

If the Flash Loader doesn't nd your modem during the ash process:

  • Check that your computer has no other active modems on any of its COM ports. Don't forget to disable any internal modems in your computer.
  • Manually verify that the Courier Lite 56K Business Modem is active by using a serial terminal applicaon. (e.g. PuTTY, Tera Term, RealTerm, etc.) Select the COM port of the Courier Lite 56K Business Modem. Type AT and Enter. The modem should respond OK.

If the modem doesn't respond OK:

A. Check that you're using the correct COM port that your computer has assigned to the Courier Lite 56K Business Modem.
B. Check that the Courier Lite 56K Business Modem power is ON.
C. Check that the serial cable connecting the computer's serial port to the Courier Lite 56K Business Modem is wired with all the RS232 control signals. (i.e. DTR, DSR, CTS, RTS)

- Contact USR Technical Support.

If Your Modem Doesn't Respond Aer Flashing

If your modem doesn't respond after the flash process, the new software file may be corrupt. Try downloading it again from the USR support website. Then send that le to the Courier Lite 56K Business Modem using the Flash Loader.

If your modem sll doesn't respond, contact USR Technical Support.

Remote Flash

Flashing soware into a remote Courier Lite 56K Business Modem is not supported.

CONFIGURATION

Configuring DIP Switches

Locang DIP Switches

On the Courier Lite 56K Business Modem, the DIP switches are on the back of the unit. The default seng is DIP switches 3, 5, and 8 are ON (in the down posion).

↑OFF 1 2 3 4 5 6 7 8 ↓ON

Using DIP Switches to Congure your Courier Lite 56K Business Modem

To do thisSet DIP SwitchTo this seng
Set DTR to Normal1OFF (Default)
Ignore DTR1ON
Set verbal result code display2OFF (Default)
Set numeric result code display2ON
Disable result codes3OFF
Enable result codes3ON (Default)
Enable the echo in oine commands4OFF (Default)
Disable the echo in oine commands4ON
Enable auto answer5OFF
Disable auto answer5ON (Default)
Normal Carrier Detect6OFF (Default)
Carrier Detect always on6ON
Load Y0-Y4 conguraon that is stored in non-volale memory (NVRAM)7OFF (Default)
Load the &F0 conguraon from read-only memory (ROM)7ON
Disable AT commands8OFF
Enable AT commands8ON (Default)

Accessing and Configuring the Modem Remotely

This secon contains informaon about:

• Seng Up Remote Access
- Accessing The Host
• Quing a Remote Access Session

Overview

You can set up the Courier Lite 56K Business Modem so other devices can view or change its conguraon remotely.

You should be familiar with these terms before you connue:

LocalThe device that is directly connected to the computer you are using.
RemoteThe device at the other end of a telephone conncon.
HostThe Courier Lite 56K Business Modem that will be accessed and controlled by other devices.
GuestThe device that will access and control the host Courier Lite 56K Business Modem.

Seng Up Remote Access

At the Host Courier Lite 56K Business Modem

  1. Prepare to send AT commands by putting your communications software in Terminal Mode.
  2. Enable remote access.

Set Register S41 for a value of 1 or greater. S41 sets the number of login aempts available to the remote user. A seng of zero allows no login aempts disabling remote access.

Example: Sending ATS41=1&W allows for 1 login attempt by a remote user.

  1. Set one or two remote-access passwords.

You can set two passwords to allow dierent levels of access to each Courier Lite 56K Business Modem.

To allow guest users toUse this command to assign a remote-access password
View the Courier Lite 56K Business Modem’s conguraon.AT%P0=password
View and change the Courier Lite 56K Business Modem’s conguraon.AT%P1=password

Example: Sending AT%P1= wombat will allow a remote user to log in with the password "wombat." The user can view and change the Courier Lite 56K Business Modem's conguraon.

Note: Remote-access passwords can be up to eight alphanumeric characters long, and are not case-sensitive.

Other Remote-Access Commands

The table below is a list of remote-access conguraon commands.

For your modem toCommand
Display a view-only passwordAT%P0?
Display a view-and-change passwordAT%P1?
Erase a view-only passwordAT%P0=
Erase a view-and-change passwordAT%P1=
Disable remote access enrelyATS41=0

Example: Sending AT%P1= will erase the view and change password.

WARNING: If you erase the %P1 password without disabling remote access (using ATS41=0), anyone could access the Courier Lite 56K Business Modem and change its conguraon.

Accessing The Host at the Guest Device

The guest device requires no conguraon to access the host. Follow these steps:

  1. Be sure that the host device has enabled remote access and is set to auto-answer (ATS0=1). Know the password, if you will need one.
  2. Call the host device (although it doesn't matter which device originates the call).
  3. Aer a conncon is established, do this:

Pause 4 seconds.

Type 4 Ides: \~\~\~\~

Pause 4 seconds.

Note: The administrator of the host device can change the remote -access character using S-Register 42, and the pause duraon using S-Register 43. Refer to the S-Registers secon for more informaon.

5686G-PRO User Guide

  1. You should see a display similar to this:

U.S. Robocs Courier 56K Business Remote Access Session Serial Number 000000A000000001

Password (Ctrl-C to cancel)?

There is a three minute me limit for entering the password. If the number of unsuccessful login aempts exceeds the set limit, the host device returns online and refuses any further login aempts during the remainder of the conncon.

When the host accepts the password, the following message and prompt will appear on your screen:

Remote Access granted Remote->

Note: You may not be prompted for a password. If you aren't, password security is not active. The following prompt appears on your screen aer you type the four Ides:

Remote Access granted (query only) Remote->

Note: During a remote-access session, the maximum number of characters between carriage returns is 40.

Viewing and Changing the Host's Conguraon

Once you've gained guest access to a host, you can communicate with the host just as if you were entering commands from its aached computer.

Depending on your access privileges, you can use the regular set of Courier Lite 56K Business Modem AT commands.

If you have this access privilegeYou can use
View-onlyAny of the inquiry (ATI) commands
View and CongureAny of the Courier Lite 56K Business Modem commands, except those that cannot be used while online (for example, ATD or ATA). You can also use remote conguraon commands.See the next secon for examples.

CAUTION: Be careful not to send ATZ or ATZ! or you will lose the connection!

Remote Conguraon Commands

There are special commands that can be used only during a remote-access session.

You can change the host Courier 56K Business Modem's serial port rate by using the AT%Bn command.

To change the host Courier 56K Business Modem's serial port rate toCommand
110 bpsAT%B0
300 bpsAT%B1
600 bpsAT%B2
1200 bpsAT%B3
2400 bpsAT%B4
4800 bpsAT%B5
9600 bpsAT%B6
To change the host Courier 56K Business Modem's serial port rate toCommand
19200 bpsAT%B7
38400 bpsAT%B8
57600 bpsAT%B9
76800 bpsAT%B10
115200 bpsAT%B11
230400 bpsAT%B12

Example: Sending AT%B6 will change the Courier 56K Business Modem's serial port rate to 9600 bps.

You can use the AT%Fn command to control the data format.

To change the data format toCommand
No Parity (8 data bits)AT%F0
Mark parity (7 data bits)AT%F1
Odd Parity (7 data bits)AT%F2
Even parity (7 data bits)AT%F3

You can use the AT%Cn command to control whether and when to apply changes to the conguraon.

For your modem toCommand
Defer conguraon changes to when the call ends.AT%C0(Default)
Restore the original conguraon.Use this command to cancel any changes made during remote access and restore the original conguraon.AT%C1
Force conguraon changes.Use this command to make conguraon changes take eect immediately. We do not recommend forcing changes unless it is absolutely necessary because an unreliable conncon, or even a loss of conncon, may result.AT%C2

Example: Sending AT%C1 will cancel any changes made to the modem during a remote access session and restore it to the original conguraon.

Note: Even though, by default (%C0), the changes you make do not take eect until the next connection, the new configuration is reflected immediately in inquiry responses (ATIn). Commands that have been written to NVRAM (using &W) and forced congruraon changes (%C2) will not be restored to their previous sengs when you send the host AT%C1.

Aer you make changes to the host's conguraon, the remote-access prompt changes from Remote->to Remote+>.

If you restore the original conguraon using the AT%C1 command, the rst prompt is restored, assuring you the original conguraon is intact.

Quing A Remote Access Session

If you want to quit the remote access login before you have entered the password, return online by pressing C or typing ATO.

Aer you've entered the password, you can quit by sending one of these commands:

To end the remote-access sessionCommand
And keep the conncon.ATO
And end the conncon.ATH
End the conncon, and reset the host modem.ATZ

Note: Before you disconnect, issue the ATI5 command to the remote modem and check its S41 seng. Make sure S41 is set for a value of 1 or greater. If S41 is set to 0, when you disconnect

you will not be able to access the remote modem again. To prevent this send ATS41=1&W before you disconnect.

Dial Security

This secon contains informaon about:

• Seng up Dial Security
- Maintaining Security Accounts
• What The Guest User Needs To Do
- Configuring Dial Security Remotely
• DTMF Security

Overview

Dial Security is designed to protect networks and data centers from unauthorized access.

You should be familiar with these terms before you connue:

LocalThe device that is directly connected to the computer you are using.
RemoteThe device at the other end of a telephone conncon.
HostThe Courier Lite 56K Business Modem that will be accessed and controlled by other devices.
GuestThe device that will access and control the host Courier Lite 56K Business Modem.

You can congure up to 5 accounts: one administrave account for you and four accounts for guest users. The account profiles are stored in the host Courier Lite 56K Business Modem's nonvolatile random access memory (NVRAM).

There are two forms of Dial Security; each will be explained later in this secon :

  • Autopass
  • Password Prompng

Seng up Dial Security

Here is a summary of the steps for seng up Dial Security:

  1. Set up an account for yourself
  2. Identify your account as the Administrave Account
  3. Set up guest-user accounts
  4. Enable local (host) security
  5. Choose a Dial Security method
  6. Enable Dial Security
  7. Acvate the Dial Security sengs

1. Set up an account for yourself

Use any of the 5 available accounts (numbered 0-4) for your account. Use the AT%An command to set up user accounts.

Note: The AT%An command is automatically written to NVRAM. It does not require you to send &W.

USRobotics Courier Lite - Set up an account for yourself - 1

flowchart
graph LR
    A["Account number (0-4)"] --> B["%A command"]
    C["Password, 8 characters maximum, case-sensitive"] --> D["Password, y,y,n,5551000"]
    E["Dialback enabled? (y/n)"] --> F["Account enabled? (y/n)"]
    G["Prompt user for dialback number? (y/n)"] --> H["Specified dialback number (up to 37 ASCII characters)"]

WARNING: Do not insert spaces between commas or between elds and commas. Spaces will invalidate the command.

5686G-PRO User Guide

Dialback opons

You can set the Courier Lite 56K Business Modem to automacally dial back a certain number aer a guest modem dials in.

Note: Count your commas. There should always be at least four commas in the %A command. Do not insert spaces between commas or between elds and commas. Spaces will invalidate the command.

To make the host Courier Lite 56K Business ModemCommandExample
Hang up and then dial back a guest device at a specied number. Expect a pause of approximately 1.5 minutes before the modem dials back. You cannot alter the duraon of the pause.AT%A0=password,y,y,n,1area code and phone numberAT%A0=wombat,y,y,n,1,8475555555
Prompt you to enter a number at which to dial back a device, and then have the Courier Lite 56K Business Modem dial back the device at that numberAT%A0=password,y,y,y,AT%A0=wombat,y,y,y,
Disable dialbackAT%A0=password,y,n,,AT%A0=wombat,y,n,,

Note: To enable Dialback, you must enable Dial Security with Prompng. See step 6.

2. Identify your account as the Administrave Account

For your modem toCommandExample
Idenfy your account as the Administrave AccountAT%LAT%L=PW0This example sets account 0 as the Administrave Account.

Once you set the administrave password, you cannot view or modify the guest account proles unless you enter the correct administrave password.

WARNING: Be sure to remember your administrave password. If you enable Dial Security and then forget your administrave password, you will be locked out of the Courier Lite 56K Business Modem's dial security features. You will need to restore the factory defaults by setting DIP switch 7 ON. This will erase ALL passwords and you will have to reconfigure all your accounts.

3. Set up guest-user accounts

Use the AT%An command to set up guest-user accounts in the same way you set up your administrave account. You can set up four guest accounts. Refer to the gure in step 1 regarding informaon about formang the AT%An command.

Aer you have enabled the guest accounts, make sure the guest users know their passwords and the log-in procedure.

Modifying accounts

Aer you have set up an account, you can modify each eld independently. If a eld is to remain unchanged from its original seng, just insert a comma as shown:

$$ \mathrm{AT} \% \mathrm{A1=,,,Y}, $$

The command above allows the guest user to supply a dialback number that is dierent from the one stored in the original account record.

4. Enable Local Security.

WARNING: If you do not enable Local Security, the Dial Security sengs will not be protected and other users will be able to change or erase them.

For your modem toCommand
Protect the administrave password (local security enabled)ATS53.2=1

Note: You must use the &W command to save the settings in NVRAM. If you don't, the next time you reset or power o the Courier Lite 56K Business Modem, Dial Security will be disabled.

5. Decide which Dial Security opon to use

You can choose from the two types of Dial Security: Autopass and Password Prompng.

Autopass

Autopass is the default form of password protecon. Autopass automates the process of logging in to the host modem, but it requires the guest and host devices to be U.S. Robocs Courier modems.

When a guest device aempts an Autopass conneccon, the guest includes the password in its V.42 error-control request. The host modem checks all the enabled passwords in its security accounts for a match.

Password Prompng

Password Prompng allows connecons with any guest device, as long as the guest user knows the correct password.

When the host has Password Prompng enabled, it asks guest users for a password. The host modem checks the received password against each of its active Security accounts.

5686G-PRO User Guide

The table below is a comparison between Autopass and Password prompting.

When using Autopass PrompngWhen using Password Prompng
Both the host and guest devices are made by U.S.Robocs and have Dial Security enabled.Guest devices don’t have to support U.S.Robocs Dial Security.
The conncon between the Courier Lite 56K Business Modem or modems is under V.42 error control.(Refer to the Alphabec Command Summary secon for informaon about using AT&M4 or AT&M5.)V.42 error-control conncons aren’t required.
If the guest includes an invalid password, the host sends an INVALID PASSWORD message and hangs up.If the guest sends an invalid password, the host prompts twice more before disconnecng.If the guest does not send a password aer 60 seconds, the host disconnects.
If the guest includes a valid password, the host permits a secure conncon.The host will sll always respond to a correct Autopass aempt.
If the guest did not enable Dial Security, the host will not accept the call unless prompng is enabled on the host Courier Lite 56K Business Modem.

6. Enable Dial Security

WARNING: Before you enable Dial Security, you must set up an administrave account and password. See Steps 1 & 2.

For your modem to enableCommand
Autopass Dial SecurityATS53.0=1
Dial Security with Password Prompng(this also enables Autopass)ATS53.0=1.1=1
Dialback Security, enable Password Prompng and enable Dialback in each guest accountAT%An=password,y,y,y,phone numberwhere n is the account number. See the gure in previous secon, Seng Up Dial Security for more informaon.

Example: Issuing AT%A3=wombat,y,y,y,5551234 to your modem will enable Password Prompng and Dialback for account 3, which has the password "wombat."

Note: You must use the &W command to save the sengs for Enabling Autopass Dial Security and Dial Security with Password Prompng. If you don't, the next me you reset or power o the Courier Lite 56K Business Modem, Dial Security will be disabled.

If you need a reference when seng these commands, you can use the ATI10 command. Refer to the Alphabec Command Summary secon for more informaon about the ATI10 command.

7. Send ATZ or ATZ! to acvate the Dial Security sengs.

Note: Make sure that DIP switch 7 is OFF, so the modem loads the sengs stored in NVRAM. If DIP switch 7 is ON, the sengs in ROM (&F0) are loaded, disabling dial security. You can retrieve the dial security sengs by seng DIP switch 7 OFF and reseng the Courier Lite 56K Business Modem using ATZ or by toggling the power of the modem.

Maintaining Security Accounts

Once the administrave password is set and Dial Security is enabled, the administrator is the on ly one who can access account informaon.

You can use the AT%S= and AT%E= commands to change and modify account informaon.

For your modem toCommand
Access accounts by disabling local securityAT%S=administrave password
View account informaon, once access has been granted.Remote users may only use this command during remoteaccess sessions if local-access security is disabled.ATI10
Erase local-access passwordAT%E=1
Erase Autopass passwordAT%E=2
Erase passwords in accounts 0-4AT%E=3
Erase phone numbers in accounts 0-4AT%E=4
Disable Account, Dialback, and New Number elds inaccounts 0-4.AT%E=5
Edit or overwrite an individual account or an individualaccount eldAT%An=where n is the account number.See the image in the Seng Up DialSecurity secon for more informaon.

Example: Sending AT%E=3 erases passwords for accounts 0-4.

Note: When using the AT%S= command, the device echoes the administrave password, which is case-sensitive. Courier 56K Business Modems will accept an invalid password entry, but will lock out users from the security commands. For example, if the password is Green, but you enter GREEN, an OK is displayed. However, if you try to type a security command (for example, ATI10 to view accounts), an [ACCESS DENIED] message is displayed.

Remote Conguraon

Dial Security accounts may be configured remotely. (Refer to Configuring Dial Security Remotely at the end of this secon.)

What The Guest User Needs To Do

When guest users want to call in to the host (assuming you have enabled Dial Security by entering ATS53.0=1),

• They must know the password.
- If you have enabled Dialback, they must set their device to auto-answer.

  1. If the host has security enabled, get a password from the host's administrator. The password is case-sensitive, so be sure to copy it correctly.

If the host has prompting enabled and the host operator enables Dialback for your account, skip to Step 3.

  1. For guest users with Courier Lite 56K Business Modems (or I-Modems) only:

a) Create a security account using the password the host's administrator asked you to use. (See Seng Up Dial Security, earlier in this secon for instrucons.)
b) You need to assign the password as your Autopass password.

For your modem toCommand
Assign the password as your Autopass password.AT%V=PWn where n is the number of the account you set up.

Example: Sending AT%V=PW3 will assign the password as an Autopass password for account 3.

c) Check to see that you set your Autopass password correctly by using the ATI10 command.
Your Autopass password appears beside AUTOPASS PASSWORD if you have done all the steps correctly.
d) Once the Autopass password is set, enable your Courier Lite 56K Business Modem's Dial Security.

For your modem toCommand
Enable Dial SecurityATS53.0=1

CAUTION: If you do not follow an S-Register setting with &W, the setting will be retained only until the next reset or power o.

  1. If Dialback is enabled at the host Courier Lite 56K Business Modem's site, set your modem to answer the host Courier Lite 56K Business Modem when it dials back.
For your modem toCommand
To answer the Dialback callATS0=1
  1. Call the host.
  2. Aer the call ends you can disable Auto Answer.
For your modem toCommand
Disable Auto AnswerATS0=0

Conguring Dial Security Remotely

The host administrator can congregate the host's security sengs remotely.

Note: At the host device, you must have previously enabled remote access and assigned a remote-access password that allows view-and-change privileges (Refer to the Accessing and Configuring the Modem Remotely section in this guide). You may want to use your administrative password as your remote-access password.

Dialing In From the Remote Site

  1. From the remote site, connect to the host using Dial Security. Once a connection is made, follow the instrucons for beginning a remote-access session as described in the Accessing and Conguring the Courier Lite 56K Business Modem Remotely.
  2. When remote access has been granted, use the AT%S= command to access the Dial Security accounts. Refer to the Maintaining Security Accounts part in this secon.

To view the security account informaon use ATI10.

  1. Make any configuration changes and execute them immediately by entering AT%C2.
  2. To end the remote session and reactivate Dial Security on the host, reset the host device by issuing ATZ.

WARNING: If you do not use the ATZ command to end a remote-access session, Dial Security will remain disabled at the host, and anyone dialing in to the host for remote access will have access to the ATI10 screen and all Dial Security accounts.

5686G-PRO User Guide

DTMF Security

DTMF (Dual Tone Mul-Frequency) Security requires a modem to go o hook when it receives a call but keep silent until it receives the valid DTMF password. Aer the modem receives the valid password, it will begin training. If the DTMF password is invalid, the modem will go on hook, and the DTE will never know there had been a call coming.

The DTMF security status and password are shown in the ATI10 screen.

DTMF security is enabled by seng the S53 bit 3, e.g. S53=8 or S53.3=1.

Using the %D command sets the DTMF security password (AT%D=PWn, n=0--4). Make sure to disable that account so no one can use the DTMF password as the Dial Security account. For example, to set local modem DTMF security password, you may use following command: AT%A0=123456,N,, then AT%D=PW0. You can change that security account later, if you like.

The DTMF password can be the combinaon of 0123456789*ABCD; the # is used as the password end sign. The maximum length of the DTMF password is eight characters.

The remote modem dial string should look like this: ATDT2625000@123456#. In this example, "123456" is the DTMF security password.

Testing the Connection

This secon contains informaon about:

• Testing the Courier Lite 56K Business Modem using AT&Tn

Overview

Your modem can perform local analog loopback and local digital loopback tests. You can use these tests to check the operations of the modem's transmitter and receiver, or to locate a problem with a remote device or a telephone line.

Testing is done by sending the AT&Tn command or by setting Register S16. Only one test can be performed at a given me. If you send a test command while the modem is in test mode, you will receive an ERROR message.

All loopback tesng conforms to ITU-T Recommendaon V.54.

Tesng the Courier Lite 56K Business Modem using AT&Tn

To perform local analog loopback and local digital loopback testing, use the AT&Tn command. You can type in your own data during tesng or use the modem's internal test paern and error detector. See the following seconds for more detailed informaon about each AT&Tn command.

For your modem toCommand
End testAT&T0
Local analog loopbackAT&T1
Local digital loopbackAT&T3
Local analog loopback with test paernAT&T8

Example: Sending AT&T3 to your Courier Lite 56K Business Modem will allow a remote user to test their conneccon to your modem.

Note: Disable error control (using the &M0 command, refer to the Alphabetic Command Summary) before tesng. If the modem is detectng errors and retransming the aected data, your results will be invalid.

Analog Loopback Tesng

Local loopback tesng checks the operaon of the Courier Lite 56K Business Modem's transmier and receiver.

USRobotics Courier Lite - Analog Loopback Tesng - 1

flowchart
graph TD
    A["Modem/DTE"] --> B["Transmitter"]
    A --> C["Receiver"]
    B --> D["Telco"]
    C --> D
    E["TX"] --> A
    F["RX"] --> A

Using AT&T1

  1. Send AT&M0&N3S14.0=0 to prepare the modem for testing.

This command disables error control, xes the conneccon rate at 2400 bps, and makes the modem return to command mode when you type +++.

5686G-PRO User Guide

  1. Send AT&T1 to the modem so it enters analog loopback mode. The CD status light will illuminate.
  2. Type any recognizable data. It will be looped back by your modem's transmitter for vericaon on your screen.
  3. When the test is completed, send +++ and then AT&TO to end the test.

Alternatively, you can end the test by sending ATH, or ATZ. Be careful, though, because ATZ resets the modem in addition to ending the test.

In either case, the modem responds with OK. If the modem sends an ERROR message, you have issued an invalid command.

  1. Send AT&M4, unless you used a reset command (ATZ).

Note: If the Courier Lite 56K Business Modem is in online command mode, sll connected to a remote modem, and you send AT&T1 or AT&T8, it drops the call, enters analog loopback mode, sends a CONNECT result, and waits for loopback characters.

Stopping a Test (AT&T0, ATS18)

To stop a test, send AT&T0 to the modem, or set Register S18 to a specified number of seconds (for example, ATS18=10). When the 10 seconds are up, the modem will stop the test automacally and return to Command Mode. Send ATH to the modem to hang up, or send ATZ to hang up and reset the modem to its defaults.

Note: If you use the S18 test timer, but in the process of testing you issue an ATZ command, S18 resets to zero and the mer is disabled. You cannot store a value for S18 in NVRAM; its power-on and reset default is always zero.

Using AT&T8

This analog loopback opon causes the Courier Lite 56K Business Modem to send an internal test paern to its transmier and loop it back to the receiver. An internal error detector counts any errors and, when the test is ended, sends the number of errors or 000 (no errors) to the screen.

Since you don't type anything during this test and the Courier Lite 56K Business Modem does not send anything to the screen, this opon veries only the Courier Lite 56K Business Modem. If there are no errors but your problem connues, it may be at the computer interface.

  1. Send AT&M0&N3S14.0=0 to the modem to prepare for testing.

This command disables error control, xes the conneccon rate at 2400 bps, and makes the Courier Lite 56K Business Modem return to command mode when you type +++.

  1. Send AT&T8 to begin the test.

The Courier Lite 56K Business Modem enters analog loopback (AL) mode, and sends a CONNECT message. The CD status light will illuminate. The modem then sends its internal test paern to the transmier, and loops the paern back to the receiver. You will not see any data on your screen.

  1. Send the escape code, +++, and then AT&T0 to end the test.

Alternatively, you can end the test with the S18 test mer or by sending ATH or ATZ. Be careful, because ATZ resets the modem in addition to ending the test.

In any case, the Courier Lite 56K Business Modem hangs up and returns a three-digit code, followed by OK.

The codeIndicates
000No errors were found
255255 or more errors
An ERROR message indicates that you issued an invalid command.
  1. Send AT&M4, unless you used a reset command (ATZ or ATZ!).

Digital Loopback Tesng (AT&T3)

This test can help you locate a problem with a remote device or with the telephone line. The gure below shows the data ow during Digital Loopback (DL) tesng.

USRobotics Courier Lite - Digital Loopback Tesng (AT&amp;T3) - 1

flowchart
graph LR
    A["To DTE"] --> B["Transmitter"]
    A --> C["Receiver"]
    B --> D["Telco"]
    C --> D
    D --> E["Telco"]
    E --> F["Transmitter"]
    E --> G["Receiver"]
    F --> H["To DTE"]
    G --> H
    H --> I["TX"]
    H --> J["RX"]
    style A fill:#f9f,stroke:#333
    style I fill:#ccf,stroke:#333
    style J fill:#ccf,stroke:#333
  1. Send the command AT&M0&N3S14.0=0 to the modem to prepare for testing.

This command disables error control, xes the conneccon rate at 2400 bps, and makes the Courier return to command mode when you type +++.

  1. Establish a conneccon with the remote device.

  2. Send the Courier Lite 56K Business Modem the escape code, +++, to bring it back to Command mode.

  3. Send AT&T3 to the modem to enter Digital Loopback mode.

5686G-PRO User Guide

  1. Have the remote user type a short message. It will be looped back by your Courier Lite 56K Business Modem's transmitter for verification on the remote user's screen. You will not see the message or any other data.
  2. When the remote user has completed the test, send the escape code, +++, and then AT&TO to end the test.

Alternatively, you can end the test with the S18 test mer or by sending ATH or ATZ. Be careful, because ATZ resets the modem in addition to ending the test.

In any case, the Courier Lite 56K Business Modem responds OK. If the modem sends an ERROR message, you have issued an invalid command.

  1. Send AT&M4, unless you used ATZ.

REFERENCE

S-Registers

Understanding Bit-Mapped S-Registers

A bit-mapped S-Register uses one number to describe a collecon of sengs. Bit -mapping allows us to pack a lot of informaon in a small space.

Bit-mapped registers are in the form of Sr.b=n, where r is the bit-mapped register; .b is the bit; n is 0 (o) or 1 (on).

The modem displays the value of an S-Register, as a decimal value between 0 and 255. The modem, however, understands the decimal value as a collecon of binary digits (bits).

How bits are mapped to decimal values

Bits can be mapped into decimal values. Each bit can be either on (1) or o (0). Eight bits create 256 unique combinaons of 1s and 0s. Each of the eight bits can be assigned a number corresponding to its posion:

b b b b b b b 7 6 5 4 3 2 1 0

Also, each bit can be assigned a value corresponding to its number (e.g., the value equals 2 to the power of the bit):

BitValue
7128
664
532
416
38
24
12
01

Converng Bits to Decimal Values

Starng with a string of eight bits, assign each "1" bit a value based on its posion. Add the values to come up with the nal decimal value.

Here's an example of how bits are converted to decimal values:

01001111

01001111
0+64+0+0+8+4+2+1 = 79

Converng Decimal Values to Bits

Convert decimal values to bits by nding the largest decimal equivalent that is less than the decimal value. Subtract the decimal equivalent and mark the equivalent bit "1." Connue unl the decimal value is zero. See the example below.

113

113 - 64 = 49

01

49 -32 = 17

011

17 -16 = 1

0111

1 - 1 = 0

01110001

You can set bit-mapped S-Registers using either bits or decimal values. While it may be simpler for you to set the bits individually, your modem displays the S-Register sengs in decimal form.

Using Bits

Turning individual bits on and o is the more direct way to set bit -mapped S-Registers. To do this, specify the S-Register that you want to set and then indicate which bits you want to turn on (1) or o (0).

Example: ATS13.0=1.4=1.5=1, turns bits 0, 4, and 5 on for S -Register 13.

Using Decimal Values

An alternate way to set bit-mapped S-Registers is by adding the decimal values of the bits and entering the total.

This example, ATS13=49, sets the same value as the one in Using Bits above.

A complete list of S-Registers

RegisterDefaultFuncon
S00Sets the number of rings on which to answer in Auto Answer mode. S0=0 disables Auto Answer. S0=1 enables Auto Answer and the Courier Lite 56K Business Modem answers on the rst ring.
S10Counts and stores the number of rings from an incoming call.
S243Stores the ASCII decimal code for the escape code character. Default character is “+”. A value of 128-255 disables the escape code.
S313Stores the ASCII decimal code for the Carriage Return character. Valid range is 0-127.
S410Stores the ASCII decimal code for the Line Feed character. Valid range is 0 -127.
S58Stores the ASCII decimal code for the Backspace character. A value of 128 -255 disables the Backspace key's delete funcon.
S60Set the number of seconds the Courier Lite 56K Business Modem waits for a dial tone.
S760Sets the number of seconds the Courier Lite 56K Business Modem waits for a carrier. May be set for much longer duraon if, for example, the Courier Lite 56K Business Modem is originang an internaonal conncon.
S82Sets the duraon, in seconds, for the pause (,) opon in the Dial command and the pause between command reexecuons (> and A> commands).
S96Sets the required duraon, in tenths of a second, of the remote device's carrier signal before recognition by the Courier Lite 56K Business Modem.
S1014Sets the duraon, in tenths of a second, that the Courier Lite 56K Business Modem waits aer loss of carrier before hanging up. This guard me allows the Courier Lite 56K Business Modem to disnguish between a line hit, or other disturbance that momentarily breaks the conncon, and a true disconnect (hanging up) by the remote device.
S1170Sets the duraon and spacing, in milliseconds, of dialed tones.
S1250Sets the duraon, in ieths of a second, of the guard me for the escape code (+++) sequence.
S130Bit-mapped register. See the beginning of this secon for informaon about seng bit-mapped registers.
BitValueResult
01Reset when DTR drops.
12Reverse normal Auto Answer operaon: On incoming RING, enter Originate Mode and look for an answer tone.
24Add 250 ms pause before NO CARRIER display.
38On DTR signal, autodial the number stored in NVRAM at posion 0.
416At power-on/reset, autodial number stored in NVRAM at posion 0.
532Reserved
664Disable MNP Level 3 (used for tesng Level 2).
7128Hardware reset (works like powering o and then on).
S140Bit-mapped register (See the beginning of this secon for informaon about seng bit-mapped registers).
BitValueResult
01Disconnect on escape code.
12Reserved
24Reserved
38Reserved
416Reserved
532Reserved
664Reserved
7128Reserved
S150Bit-mapped register. ( See the beginning of this secon for informaon about seng bit-mapped registers).
BitValueResult
01Reserved
12Reserved
24Reserved
38Reserved
416Disable MNP Level 4; retransming the larger Lev el 4 data blocks may be a problem if you expect a great number of errors during a call.
532Reserved
664Some earlier 2400 bps MNP modems, not made by U.S. Robocs or Microcom, were not fully compatible with the MNP protocol. If you have diculty making a successful 2400 bps MNP conncon with a remote MNP modem, it may be because of this incompability. Set S15 to 64 and try again to make the conncon.
7128Reserved
S160Bit-mapped register. ( See the beginning of this secon for informaon about seng bit-mapped registers). For tesng, refer to theTesng the Conneconpart of the Conguraon secon.
BitValueResult
01Reserved
12Dial Test.
24Test paern.
38Reserved
416Reserved
532Reserved
664Reserved
7128Reserved
S180Test mer for soware-initiated loopback tesng (&Tn); disabled when S18 is set to 0. Used to set the duraon of tesng, in seconds, before the Courier Lite 56K Business Modem automacally mes out and terminates the test.
S190Sets the duraon, in minutes, for the Inacvity Timer. The mer acvates when there is no data acvity on the R232 interface, and at the meout the Courier Lite 56K Business Modem hangs up. S19=0 disables the mer.
S2110Sets, in 10-millisecond units, the length of breaks sent from the Courier Lite 56K Business Modem to the computer or terminal. Applies to ARQ mode only. This command overwrites the current status of the +EB command, and is also overwritten by changes made by the +EB command.
S2217Stores the ASCII code for the XON character.
S2319Stores the ASCII code for the XOFF character.
S24150Sets the duraon, in 20-millisecond units, between pulsed DSR signals when the Courier Lite 56K Business Modem is set to &S2 or &S3. The default is 3 seconds.
S255Sets DTR recognition me in 10-millisecond units.
S261Reserved
S270Bit-mapped register. ( See the beginning of this secon for informaon about seng bit-mapped registers).
BitValueResult
01Enable ITU-T V.21 modulaon at 300 bps for overseas calls. In V.21 mode, the Courier Lite 56K Business Modem answers both Bell 103 and V.21 calls, but only originates V.21 calls.
12Reserved
24Disable V.32 modulaon.
38Reserved
416See error control handshaking opons below.
532See error control handshaking opons below.
664Reserved
7128Unusual soware incompatibility. Some soware may not accept some result codes. This seng disables the codes and displays the 9600 code instead. The call's actual rate can be viewed on the ATI6 screen.
Error control handshaking opons: Select the total value of bits 4 and 5
Bit 4Bit 5Result
00Complete handshaking sequence: V.42 Detecon, LAPM error control, MNP.
160Disable MNP.
032Disable V.42 Detecon and LAPM.
1632Disable Detecon phase, if you know that the remote Courier Lite 56K Business Modem does LAPM, but not the Detecon phase.
S288Sets the duraon in tenths of a second of the extra 3000/600 Hz answer tones sent during V.32 hand-shaking. This gives V.32 modems additional me to connect in V.32 mode before ming out.If there is diculty answering older, manually operated V.32 modems (for example, modems that require a buon to be pushed in order to dial), try lengthening the duraon of the extra tones. Seng S28 to zero eliminates the extra tones resuling in a faster connect me if, for example, the Courier Lite 56K Business Modem is set to use V.21 modulaon (300 bps) or V.23 modulaon (1200 bps).
S2920Sets the duraon, in tenths of a second, of the V.21 answer tone.
S329Reserved
S340Bit-mapped register. See the beginning of this secon for informaon about seng bit-mapped registers.
BitValueResult
01Disable V.32 bis. Used for troublesomeong; Technical Support may ask you to disable V.32bis for tesng purposes.
12Reserved
24Reserved
38Enable V.23. Required for some Brish conncons.
416Reserved
532Reserved
664Reserved
7128Disable V.32 terbo.
S3910Display transmit level in dBm with an implied minus sign. Read-only.
S410Sets the number of allowable remote-access login aempts, thus enabling or disabling remote access.The default seng of zero allows no remote login aempts, disabling remote access. A value of 1 or greater enables remote access. If the number of unsuccessful login aempts exceeds the limit set by this register, the Courier Lite 56K Business Modem returns online and any further login aempts during the remainder of that connecan are refused.
S42126Stores the ASCII decimal code for the remote-access escape character. The default character is a lde (~).
S43200Sets the duraon, in ieths of a second, of the guard me for the remote -access (~~~~) sequence.
S4415Sets the duraon, in seconds, of the interval between losing carrier and reestablishing a connecan.
S510Bit-mapped register. See the beginning of this secon for informaon about seng bit-mapped registers.
BitValueResult
01Reserved
12Reserved
24Reserved
38Reserved
416Reserved
532Reserved
664Disable Selectve Reject
7128Reserved
S53126Bit-mapped register. ( See the beginning of this secon for informaon about seng bit-mapped registers).
BitValueResult
01Dial security enabled.
12Promptng enabled.
24Local-access password protecon enabled.
38DTMF security enabled.
416Reserved
532Reserved
664Reserved
7128Reserved
S5464Symbol rate bit-mapped register used primarily by Technical Support for debugging purposes.
BitValueResult
01Disable 2400 symbol rate.
12Disable 2743 symbol rate.
24Disable 2800 symbol rate.
38Disable 3000 symbol rate.
416Disable 3200 symbol rate.
532Disable 3429 symbol rate.
664Disable Call Indicate (CI).
7128Disable V.8.
S550Reserved
S560Bit-mapped register primarily used by Technical Support for debugging purposes.
BitValueResult
01Reserved
12Reserved
24Reserved
38Reserved
416Reserved
532Disable V.34+
664Disable V.34.
7128Disable V.FC.
S580Bit-mapped register. (See the beginning of this secon for informaon about seng bit-mapped registers.)
BitValueResult
01Reserved
12Reserved
24Reserved
38Reserved
416Reserved
532Enables/Disables V.90
664Disables V.92 funcons
7128Reserved
S590Reserved
S690Bit-mapped register. (See the beginning of this secon for informaon about seng bit-mapped registers).
BitValueResult
01Disable external Plug and Play
12Enable Auto Redial
24Reserved
38Reserved
416Reserved
532Reserved
664Reserved
7128Reserved
S700Bit-mapped Register. (See the beginning of this secon for informaon about seng bit-mapped registers.)
BitValueResult
01Enable recognition of Ring A
12Enable recognition of Ring B
24Enable recognition of Ring C
38Enable recognition of Ring D
416Enable recognition of Ring E
532Reserved
664Reserved
7128Reserved
S710RCID request delay (1/200 sec)
S720Bit-mapped Register. (See the beginning of this secon for informaon about seng bit-mapped registers.)
BitValueResult
01# of requests
12# of requests
24# of requests
38Request duraon * 10 mS
416Request duraon * 10 mS
532Request duraon * 10 mS
664Request duraon * 10 mS
7128Request duraon * 10 mS
S730Bit-mapped Register. (See the beginning of this secon for informaon about seng bit-mapped registers.)
BitValueResult
01Request level
12Request level
24Request level
38Request pause * 10 mS
416Request pause * 10 mS
532Request pause * 10 mS
664Request pause * 10 mS
7128Request pause * 10 mS

Alphabetic Command Summary

This secon contains an alphabec lisng of the AT commands to which the modem will respond.

Default sengs are bold.

  • Basic Command Set
  • Ampersand (&) Command Set
    • Percent (%) Command Set
    • Octothorpe (#) Command Set
    • V.80/V.250 Command Set
    • Additional V.92 Commands

Basic Command Set

CommandFuncon
Display help for the Basic command set.
+++Escape code. Once your modem is online with another device, the only command it recognizes is an escape code of three typed plus signs, which forces the modem back to Command mode. Do the following when issuing the command:1. Wait 1 second aer sending the last item of data.2. Type +++3. Wait 1 second before typing any data.When you type +++, the modem will either hang up or stay on line, depending on how you set S14.
>Repeat command. If you include the repeat command in the Dial string, the modem will dial the number and wait 60 seconds for a carrier.If the line is busy, the modem will pause for 2 seconds and then redial. The modem makes a maximum of 10 aempts.
A/Reexecute the last-issued command. DO NOT type AT or press ENTER.
A>Repeat the last-issued command unl canceled by pressing any key. DO NOT type AT or press Enter.
ATAenon prex: informs a modem that a command is coming. AT must precede all commands except A/, A>, and +++.
AForce a modem to answer when it is not receiving an incoming call.
BnSet handshaking opons.
B0ITU-T V.25 answer sequence; required to answer all V.34-type and overseas calls.
B1Bell answer tone; use if the modem is not required to answer V.34-type calls.
With the excepon of the Dial opons, modem ignores any commands issued aer D in the same command string.
DnDial a phone number and issue other oponal commands.The numbers 0-9 are accepted. The maximum number of characters allowed is 36, including the AT prex, punctuaon, and spaces.
Oponal parameters:
PDial using pulses.
TDial using tones.
,(Comma) Pause for 2 seconds (or the me in S-Register 8).
;(Semicolon) Remain in Command mode aer dialing.
"Dial the leers that follow. Example, ATDT1800"DIAL USR" same as ATDT18003425877.
WWait for a second dial tone before connuing to dial (with X3 or higher).
@Wait for an answer (with X3, X4, or X7).
/Pause for 125 milliseconds.
RReverse frequencies. Use this command when calling an originate-only modem. It forces the modem to dial out at the answer frequency.
!Flash the switchhook (o hook 0.5 seconds, on hook 0.5 seconds, then o hook). Use ! when other modems share the line.
L?Display the last-dialed number.
LDial the last-dialed number.
SnDial the number stored in memory at posion n, where n = 0-4. Store the number in memory using the &Z command.
Display help for the dial commands. ATD
EnCommand mode echo. Enables or disables the display of your typed commands.
E0Command mode echo OFF. Your typing will not appear on the screen.
E1Command mode echo ON. Your typing will appear on the screen.
If double characters appear on the screen, both the modem's local echo and your soware's local echo are on.
FnOnline local echo. If ON, a modem displays on your screen the data that it is transming to another modem.
F0Online echo ON. (Somemes called half duplex.)
F1Online echo OFF. (Somemes called full duplex.)
HnGo on or o hook.
H0Go on hook (hang up).
H1Go o hook (pick up).
InQuery the modem.
I0Displays the product code.
I1Displays checksum.
I2Displays RAM TEST.
I3Displays the banner (product name).
I4Display current modem sengs.
I5Display sengs stored in NVRAM.
I6Display stascs for the last call.
I7Display product conguraon.
I8Lists phone numbers with redial restricons.
I9Displays modem's Plug and Play ID.
I10Display dial security account status informaon.
I11Display link diagnoses report.
I15Display caller ID informaon.
I16Display channel probe report.
MnControl when the speaker sounds
M0The speaker is always o.
M1The speaker is on unl the call is negoated.
M2The speaker is always on.
M3The speaker turns on aer the last digit is dialed and stays on unl the call is negoated.
OnReturn online. Use with the escape code (+++) to toggle between command and online modes.
O0Return online (normal).
O1Return online and retrain. Use O1 if there were errors in a non -ARQ data transfer.
QnEnable or disable the display of result codes.
Q0Display result codes.
Q1Suppress result codes (quiet).
Q2Suppress result codes when answering.
SDisplay help screens for the S-Registers.
Sr=nSet S-Register value: r is any S-Register; n must be a decimal number between 0 and 255.
Sr.b=nSet a bit-mapped register: r is the S-register, b is the bit, and n is 0 (o) or 1 (on).
Sr?Query contents of S-register r.
Refer to the S-Registers secon for a lisng of all the S-Registers.
VnDisplay result codes in words or numbers.
V0Display result codes in numeric form.
V1Display result codes in verbal form.
XnControl the amount of informaon displayed in the result codes. The default is X7 (all codes except 12/VOICE). The modem doesn’t try to detect signals if it isn’t set to report them.For more detailed informaon, refer to the Result Code Meanings and Sets secon of the appendix.
X3Ignore Dial Tone
X4Microso default
X7Courier Lite 56K Business Modem default
YnControl which user prole or factory prole is recalled when the modem is reset.
Y0At reset use stored profile 0
Y1At reset use stored profile 1
Y2At reset use factory profile 0 (&F0)
Y3At reset use factory profile 1 (&F1)
Y4At reset use factory profile 2 (&F2)
ZnSoware reset.
Z0If DIP Switch 7 is ON (factory sengs), recall the &F0 conguraon template (no ow control). If DIP switch 7 is OFF, recall the prole selected by the Y command.
Z1Reset using stored profile 0
Z2Reset using stored profile 1
Z3Reset using factory profile 0
Z4Reset using factory profile 1
Z5Reset using factory profile 2
Z!Complete hardware reset

Ampersand (&) Command Set

CommandFuncon
&$Display help for the ampersand (&) command set.
&AnEnable or disable the display of additional result code subsets. (Also, see the Xn command.)
&A0Do not display ARQ result codes.
&A1Display ARQ result codes.
&A2In addition to ARQ result codes, display V.32, V.FC, V.34, V.90, or V.92 modulaon indicator.
&A3In addition to ARQ and modulaon indicators, display an error control indicator (LAPM, MNP, SYNC, or NONE) and a data compression type (V42 bis or MNP5).
&BnSet the serial port rate to variable or xed.
&B0Variable: The serial port rate adapts to match the speed of the conncon.
&B1Fixed: The modem always communicates with your computer at the rate at which you have set, regardless of the conncon rate.
&B2When answering calls, use the xed rate for ARQ calls and variable rates for non-ARQ calls.
The serial port rate should be equal to or higher than the &Nn rate.
&CnControls how the modem sends a Carrier Detect (CD) signal to your computer.
&C0CD always ON, even if the modem is not on line.
&C1Normal operaons. The modem sends a CD signal when it connects with another modem and drops the CD when it disconnects.
&DnControl how the modem responds to Data Terminal Ready (DTR) signals.
&D0DTR is always ON (ignored).
&D1If issued before connecng with another device, the Courier Lite 56K Business Modem can enter online Command mode during a call by dropping DTR.&D1 funcons similarly to the escape code (+++).Return online with the On command, or hang up with the Hn command.
&D2Normal DTR operaons. The modem will not accept commands unless your computer sends a DTR signal. Dropping DTR ends a call.
&D3Modem resets with DTR toggle.
&FnLoad one of the three conguraon templates that are stored permanently in read-only memory. Refer to the Flow Control Template secon for the sengs for each template.To load a template into current memory, enter AT&Fn. To write a template to NVRAM, enter AT&Fn&W0 or AT&Fn&W1.If DIP switch 7 is ON, &F0 is always loaded into memory at power-on or reset.
&F0Load No Flow Control template sengs.
&F1Load Hardware Flow Control template sengs.
&F2Load Soware Flow Control template sengs.
&GnSet guard tones for internaonal calls.
&G0No guard tone. Use this in the United States and Canada.
&G1This sets a 550 Hz guard tone, and is used in some European countries.
&G2This sets an 1800 Hz guard tone, and is used in the U.K. and some Commonwealth countries. &G2 requires the B0 seng.
&HnTransmit data ow control. Prevents the modem's buer for data transmied to the modem by its aached computer from overowing.
&H0Disable transmit data ow control.
&H1Use hardware ow control. Requires that your computer and soware support Clear to Send (CTS) at the EIA-232 interface.
&H2Use soware ow control. Requires that your soware support XON/XOFF signaling
&H3Use both hardware and soware ow control. If you are unsure about what your equipment supports, select this opon.
&InReceived data soware ow (XON/OFF) control.
&I1The modem acts on your typed XON/XOFF commands, Ctrl-S or Ctrl-Q, and passes them to the remote device.
&I2The modem acts on your XON/XOFF commands, but removes them from the data stream instead of passing them to the remote device. This is the recommended seng for ARQ mode.
&KnEnable or disable data compression. This command overwrites the current status of the +DCS and +DS commands, and is also overwritten by changes made by the +DCS and +DS commands.
&K0Disable data compression.
&K1Use auto-enable/disable. The modem enables compression if the serial port rate is xed (&B1) and disables compression if the serial port rate follows the conncon rate (&B0) because compression oers no throughput advantage when the serial port and conncon rates are equal; in fact, compression may degrade throughput.
&K2Always enable data compression.
&K3Selectve data compression. The modem negoates only for V.42 bis compression, and disables MNP Level 5 (MNP5) compression. Use this seng to transfer compressed les.
&MnEnable ARQ (error control) protocols. Both your modem and the remote device must use the same protocol.
&M0Normal mode, no error control. Due to the nature of phone line channels, this is never recommended for calls above 2400 bps.
&M4Normal/ARQ mode. If an ARQ conncon isn't made, the modem operates in Normal mode as though it were set to &M0.
&M5ARQ asynchronous mode. The modem hangs up if an ARQ conncon cannot be made.
CommandFuncon
&NnSets highest xed link speed.
&UnSets lowest xed link speed.
n=0Variable rate. The modem negoates with the remote device for the highest possible connecon rate, depending on the capabilities of the remote device.
n=1-38Fixed rate. The modem connects only if the remote device is operang at the same rate or higher.The connecon rate should be lower than or equal to the serial port rate.
n=1300 bps
n=21200 bps
n=32400 bps
n=44800 bps
n=57200 bps
n=69600 bps
n=712000 bps
n=814400 bps
n=916800 bps
n=1019200 bps
n=1121600 bps
n=1224000 bps
n=1326400 bps
n=1428800 bps
n=1531200 bps
n=1633600 bps
n=1728000 bps
n=1829333 bps
n=1930666 bps
n=2032000 bps
n=2133333 bps
n=2234666 bps
n=2336000 bps
n=2437333 bps
n=2538666 bps
n=2640000 bps
n=2741333 bps
n=2842666 bps
n=2944000 bps
n=3045333 bps
n=3146666 bps
n=3248000 bps
n=3349333 bps
n=3450666 bps
n=3552000 bps
n=3653333 bps
n=3754666 bps
n=3856000 bps
&PnEnable pulse dial.
n=0Pulse dial disabled
n=1Austria, Czechoslovakia, Denmark, Finland, Germany, Italy, Netherlands, South Africa (Second opon for Asia, France, Korea, Norway, South Africa)
n=2Australia, Asia, Belgium, France, Ireland, Korea, Portugal, South Africa, Spain
n=3Norway
n=5Japan
n=6Sweden
n=7(Second opon for Australia)
&RnReceived data (RTS) hardware ow control.
&R1Ignore RTS. This seng is required if your computer or terminal or soware does not support RTS.
&R2Enable hardware ow control of received data. The modem sends data to the computer only upon receipt of the RTS signal.
&SnSend the computer a Data Set Ready (DSR) signal via the EIA-232 interface.
&S0DSR is always ON (override).
&S1In Originate mode: Send DSR aer dialing, on detecon of the remote device's answer tone. In Answer mode: Send DSR aer sending an answer tone.
&S2When Carrier is lost, send a pulsed DSR signal with Clear to Send (CTS) following Carrier Detect (CD). This opon is for specialized equipment such as automac callback units.
&S3Same as &S2, but without the CTS signal.
&S4Send the computer DSR at the same me as CD.
&S5Send DSR normally, and follow CTS with CD.
&TnTest the modem.
&T0End tesng.
&T1Local analog loopback
&T3Local digital loopback
&T8Local analog loopback with test paern
&WnWrite the current sengs to NVRAM.
&W0Store current conguraon to prole 0.
&W1Store current conguraon to prole 1.
&YnBreak handling. This command lets you send a break to stop data transfer without disconnecng. This command overwrites the current status of the +EB command, and is also overwrien by changes made by the +EB command.
&Y0Enter on-line command mode. Returning to data mode sends break.
&Y1Destrucve, expedited.
&Y2Nondestructive, expedited.
&Y3Nondestructive, unexpedited; the modem sends a break-in-sequence with data received from your computer or terminal.
If the call is under data compression, destructive breaks cause both modems to reset their data compression tables. When transmission resumes, the modems build new tables, and the result is temporary lower-than-normal throughput.
&Zn=sStore up to 5 numbers in NVRAM, where n is the position 0-4 in NVRAM, and s is the phone number string. The number string may be up to 36 characters long, including any Dial command opons.Example: AT&Z2=555-6789In the following example, &M0 (no error control) is inserted before the Dial command. Example: AT&M0 DS2
This command funcons dierently when Dial Security is enabled.Also, do not include modem sengs in the &Zn string. If the call requires a special seng, insert it in the command string before the DSn command.
CommandFuncon
&Zn=LStores the last-dialed number in posion n.
&Zn?Display the phone number stored in NVRAM at posion n (where n = 0 -4).

Percent (%) Command Set

CommandFuncon
%$Display help for the percent (%) command set.
%AnCreate and configure security accounts. Refer to theDial Securitysection.
%BnRemotely congregate a modem's serial port rate.
%B0110 bps
%B1300 bps
%B2600 bps
%B31200 bps
%B42400 bps
%B54800 bps
%B69600 bps
%B719200 bps
%B838400 bps
%B957600 bps
%B1076800 bps
%B11115200 bps
%B12230400 bps
%CnRemote congruraon control.
%CODefer congruraon changes until the call is ended. Changes take eect for ensuing conncons.
%C1Cancel congruraon changes and restore the original congruraon.
Using %C1 will not reverse any changes that you wrote to NVRAM (with &W) or forced (with %C2).
%C2Force congruraon changes to take eect immediately.
We recommend against forcing congruraon changes unless it is absolutely necessary. An unreliable conncon, or loss of conncon, may result.
%D=Set a DTMF password. Refer to theDial Security secon.
%E=nErase security sengs.
%E=1Erase local-access password.
%E=2Erase Autopass password.
%E=3Erase passwords in accounts 0-4.
%E=4Erase phone numbers in accounts 0-4.
%E=5Disable Account, Dialback, and New Number elds in accounts 0-4.
%FnRemotely congregate another device's data format.
%F0No parity, 8 data bits.
%F1Mark parity, 7 data bits.
%F2Odd parity, 7 data bits.
%F3Even parity, 7 data bits.
%L=Set a local-access password. Refer to theDial Security secon.
%Pn=Disable password security (n=0 or n=1) when no character follows the equal sign.
%Pn=sSet the following password (s) for viewing privileges only (n = 0), or view and conguraon privileges (n= 1).
%Pn?Display password n.
%S=nAccess the security accounts. Does not disable security.
%TEnable the recognition of tone frequencies of analog dialing devices. %T is meant primarily for use with network applicaons, but may also be integrated into certain soware programs. For example, %T could be used in a security program to identify incoming tone security codes.To return the modem to Command mode, press any key or drop the computer's or terminal's DTR signal. The modem responds OK.
%V=PWnAssign the password in account n in your modem's security account as your Autopass password

Octothorpe (#) Command Set

CommandFuncon
#$Display the help panels for the octothorpe (#) command set.
#CID=nControls the caller ID sengs.
#CID=0Disable caller ID detecon and reporng.
#CID=1Enable caller ID with formaed output.
#CID=2Enable caller ID with unformaed output.
#CID=3Enable caller ID with formaed output and name suppressed.
#CID=4Enable caller ID but do not transmit the informaon to your computer - retain it in the modem's memory.
#CID?Display the current caller ID sengs.
#CID=?Display the caller ID acons that are available.

V.80/V.250 Command Set

CommandFuncon
+DCS=n,mUse this command to congregate the available compression algorithms. The n parameter enables or disables V.42bis, and the m parameter enables or disables V.44. This command works in conjuncon with the &K command, and the result of either the &K command or the +DCS command replaces the current data compression conguraon.
n=0Disable V.42bis.
n=1Enable V.42bis.
m=0Disable V.44.
m=1Enable V.44.
m=2Enable V.44 for V.92 servers only.
+DCS?Display current +DCS seng.
+DCS=?Display list of valid +DCS sengs.
+DR=nUse this command to enable or disable the compression report. If the compression report is enabled, the +DR:intermediate result code reports the current data compression type. It is issued aer the error control report (+ER) and before the nal result code (e.g., CONNECT).
n=0Disable the compression report.
n=1Enable the compression report.
+DR?Display current +DR seng.
+DR=?Display list of valid +DR sengs.
+DS=n,m,l,kSet V.42 compression method. This command overwrites the current status of the &K command, and is also overwritten by changes made by the &K command.
n=0Do not negotiate V.42bis compression.
n=3Modem accepts V.42bis compression in both direcon.
m=0Don't disconnect if V.42 negoans fail. This parameter is always set to 0.
l=2048Diconary size, always set to 2048.
k=32String length, always set to 32.
+DS?Display current +DS seng.
+DS=?Display list of valid +DS sengs.
+EB=n,m,lSet break handling method. This command overwrites the current status of the &Y command and S21, and is also overwritten by changes made by the &Y command and S21.
n=0Enter on-line command mode. Returning to data mode sends break.
n=1Nonexpedited, nondestructive.
n=2Expedited, nondestructive.
n=3Expedited, destructive.
m=0Break length is med. This parameter is always set to 0.
l=10-90Set break length in 10 millisecond units, in steps of 10.
+EB?Display current +EB seng. Break length is displayed in milliseconds.
+EB=?Display list of valid +EB sengs.
+ER=nSet error control reporting. The +ER: intermediate result code reports the current error control type, issued aer the modulaon report and before the data compression report.
n=0Disables the error control report.
n=1Enables the error control report.
+ER?Display current +ER seng.
+ER=?Display list of valid +ER sengs.
+ETBM=n,m,lSet call terminaon buer management. 0,0,0 is the only valid combinaon, which means the modem discards all buered data when the call is terminated.
n=0This parameter is always set to 0.
m=0This parameter is always set to 0.
l=0This parameter is always set to 0.
+ETBM?Display current +ETBM seng.
+ETBM=?Display list of valid +ETBM sengs.
+ILRR=nSet local rate reporg. Use this command to display or hide the local rate report result code. The rate report is an intermediate result code , transmied aer any modulaon, error control, or data compression reports, and before the nal result code (e.g., CONNECT).
n=0Disables the local rate report.
n=1Enables the local rate report.
+ILRR?Display current +ILRR seng.
+ILRR=?Display list of valid +ILRR sengs.
+MR=nSet modulaon reporg mode. Use this command to hide or display the modulaon report. The modulaon report is an intermediate result code, transmied aer the modulaon and the rate have been determined , and before any error control or data compression reports or the nal result code (e.g., CONNECT).
n=0Turns o the modulaon report.
n=1Turns on the modulaon report.
+MR?Display current +MR seng.
+MR=?Display list of valid +MR sengs.
+MS=n,m,l,k,j,iSet modulation selection. Use this command to set the modem's modulation, the maximum transmission and recepon rates, and the status of automac modulaon negoaoon.
n=V92V.92
n=V90V.90
n=V34V.34
n=V32BV.32bis
n=V32V.32
n=V22BV.22bis
n=V.22V.22
n=Bell212ABell 212A
n=V23CV.23, constant carrier, asymmetric FDM
n=V21V21
m=0Disable automac modulaon negoaoon.
m=1Enable automatic modulation negotiation.If a value is specied for k, automac rate selecon is disabled and the modem aempts to connect at the specied rate.
l=0Minimum transmission rate, always set to 0.
k=0Use automac transmission rate selecon.
k=300-33600Maximum transmission rate. Default=31200
V34: 2400-33600 in steps of 2400
V32bis: 4800-19200 in steps of 2400
V32: 4800-14400 in steps of 2400
V22bis: 2400
V22: 2200
V23C, Bell212A: 1200
V.21, Bell103: 300
j=0Minimum recepon rate, always set to 0.
i=0Use automac recepon rate selecon.
i=300-56000Maximum recepon rate. Default=31200
+MS?Display current +MS seng.
+MS=?Display list of valid +MS sengs.

+p Command Set (V.92 Commands)

CommandFuncon
+p$Display help for the +p command set.
+pCW=nControls call waing.
+pCW=0Process call waing
+pCW=1Disconnect on call waing
+pCW=2Ignore call waing
+pIG=nControls PCM upstream.
+pIG=0Enable PCM upstream
+pIG=1Disable PCM upstream
+pMH=nControls Modem on Hold.
+pMH=0Enable Modem on Hold
+pMH=1Disable Modem on Hold
+pMHDSend DTMF during MOH
+pMHRRequest Modem on Hold.
+pMHT?Display Modem on Hold meout.
+pQC=nControls phases of QC.
+pQC=0Enable phase 1 and phase 2 of QC
+pQC=1Disable phase 1 and enable phase 2 of QC
+pQC=3Disable phase 1 and phase 2 of QC
+pSS=nControls short sequences.
+pSS=0Modem decides on short sequences

Flow Control Template

• Hardware Flow Control
- Soware Flow Control
- No Flow Control

Hardware Flow Control

The table below lists the Hardware flow control template. To load this template send AT&F1 to your modem.

NVRAM OponsSengDescripon
Handshake oponB0ITU-T answer sequence
Command mode echoE1Enabled
Online local echoF1Disabled
Speaker controlM1ON during dial through connect
Result codesQ0Enabled
Verbal or numeric result codesV1Verbal result codes
Result code subsetX7Extended. Includes all codes except VOICE
Prole used at resetY0At reset use stored prole 0
Protocol response codes&A3Full protocol codes
Serial port rate select&B1Serial port rate xed higher than connect rate
Guard tone&G0U.S./Canada
Transmit data hardware ow control&H1Hardware ow control
Received data soware ow control&I2No pass-thru
Analog data compression&K1Enabled
Error control/sync&M4Normal/error control
Highest Link rate select&N0Variable
Pulse dialing type&P1U.S., Canada, and other countries
Received data hardware ow control&R2Enabled
Data Set Ready&S0Always on
Remote Digital Loopback (RDL)&T5Deny RDL
Lowest Link rate select&U0Variable
Break handling&Y1Clear buer, send immediately
Caller ID#CID=0Caller ID disabled
Set Compression Method+DCS=1,0Enable V.42bis, Disable V.44
Set Compression Report Mode+DR=0Disable the report
Set V.42 Compression Method+DS=3,0,2048,32Accept V.42bis, don’t disconnect if fail, 2048 diconary, 32 string
Set Break Handling Method+EB=3,0,10Expedited, destrucve, 100mS
Set Error Control Reporng+ER=0Disable the report
Set Call Terminaon Buer Management+ETBM=0,0,0Flush all buers on call terminaon
Set Local Rate Reporng+ILRR=0Disable the report
Set Modulaon Reporng Mode+MR=0Disable the report
Set Modulaon Selecon+MS=V92,1,0,31200,0,56000V.92, auto, auto, 31.2k max tx,56k max rx
Word length*8
Parity*0None
DTE rate* (Kbps)19.2-

* Detected by each modem from the AT prefix of the &W command that writes your defaults to NVRAM. Set your software to the desired word length, parity, and serial port rate defaults before sending the modem the AT... &W string.

Soware Flow control

The table below lists the Software flow control template. To load this template send AT&F2 to the modem. Items in bold denote the changes to (or dierences from) the &F1 template.

NVRAM OponsSengDescripon
Handshake oponB0ITU-T answer sequence
Command mode echoE1Enabled
Online local echoF1Disabled
Speaker controlM1ON during dial through connect
Result codesQ0Enabled
Verbal or numeric result codesV1Verbal result codes
Result code subsetX7Extended. Includes all codes except VOICE
Prole used at resetY0At reset use stored prole 0
Protocol response codes&A3Full protocol codes
Serial port rate select&B1Serial port rate xed higher than connect rate
Guard tone&G0U.S./Canada
Transmit data hardware ow control&H2Soware ow control
Received data soware ow control&I2No pass-thru
Analog data compression&K1Enabled
Error control/sync&M4Normal/error control
Highest Link rate select&NOVariable
Pulse dialing type&P1U.S., Canada, and other countries
Received data hardware ow control&R1Enabled
Data Set Ready&S0Always on
Remote Digital Loopback (RDL)&T5Deny RDL
Lowest Link rate select&U0Variable
Break handling&Y1Clear buer, send immediately
Caller ID#CID=0Caller ID disabled
Set Compression Method+DCS=1,0Enable V.42bis, Disable V.44
Set Compression Report Mode+DR=0Disable the report
Set V.42 Compression Method+DS=3,0,2048,32Accept V.42bis, don't disconnect if fail, 2048 diconary, 32 string
Set Break Handling Method+EB=3,0,10Expedited, destrucve, 100mS
Set Error Control Reporng+ER=0Disable the report
Set Call Terminaon Buer Management+ETBM=0,0,0Flush all buers on call terminaon
Set Local Rate Reporng+ILRR=0Disable the report
Set Modulaon Reporng Mode+MR=0Disable the report
Set Modulaon Selecon+MS=V92,1,0,31200,0,56000V.92, auto, auto, 31.2k max tx,56k max rx
Word length*8
Parity*0None
DTE rate* (Kbps)19.2-

* Detected by each modem from the AT prefix of the &W command that writes your defaults to NVRAM. Set your software to the desired word length, parity, and serial port rate defaults before sending the modem the AT... &W string.

No Flow Control

The table below lists the No Flow Control template. To load this template send AT&F0 to the modem. Items in bold denote the changes to (or differences from) the &F1 template.

NVRAM OponsSengDescripon
Handshake oponB0ITU-T answer sequence
Command mode echoE1Enabled
Online local echoF1Disabled
Speaker controlM1ON during dial through connect
Result codesQ0Enabled
Verbal or numeric result codesV1Verbal result codes
Result code subsetX1Basic
Prole used at resetY0At reset use stored prole 0
Protocol response codes&A1ARQ protocol codes
Serial port rate select&B0Variable serial port rate
Guard tone&G0U.S./Canada
Transmit data hardware ow control&H0Disabled
Received data soware ow control&I2No pass-thru
Analog data compression&K1Enabled
Error control/sync&M4Normal/error control
Highest Link rate select&N0Variable
Pulse dialing type&P1U.S., Canada, and other countries
Received data hardware ow control&R1Disabled
Data Set Ready&S0Always on
Remote Digital Loopback (RDL)&T5Deny RDL
Lowest Link rate select&U0Variable
Break handling&Y1Clear buer, send immediately
Set Compression Method+DCS=1,0Enable V.42bis, Disable V.44
Set Compression Report Mode+DR=0Disable the report
Set V.42 Compression Method+DS=3,0,2048,32Accept V.42bis, don’t disconnect if fail, 2048 diconary, 32 string
Set Break Handling Method+EB=3,0,10Expedited, destrucve, 100mS
Set Error Control Reporng+ER=0Disable the report
Set Call Terminaon Buer Management+ETBM=0,0,0Flush all buers on call terminaon
Set Local Rate Reporng+ILRR=0Disable the report
Set Modulaon Reporng Mode+MR=0Disable the report
Set Modulaon Selecon+MS=V92,1,0,31200,0,56000V.92, auto, auto, 31.2k max tx,56k max rx
Set Compression Method+DCS=1,0Enable V.42bis, Disable V.44
Word length*7
Parity*1Even
DTE rate* (Kbps)9600-

* Detected by each modem from the AT prefix of the &W command that writes your defaults to NVRAM. Set your software to the desired word length, parity, and serial port rate defaults before sending the modem the AT... &W string.

Result Code Meanings and Sets

Result Code Meanings and Sets

• Result Code Meanings
• Result Codes Sets for Xn Values
- New Connect Messages

Result Code Meanings

Result CodeMeaning
0/OKCommand has been executed.
1/CONNECTConnecon with another device.
2/RINGIncoming ring detected.
3/NO CARRIERCarrier Detect has failed, or carrier has been dropped due to disconnect.
4/ERRORCommand is invalid.
5/CONNECT 1200Connecon at reported rate. Same meaning for results of 2400 (10), 4800 (18), 7200 (20), 9600 (13), 12000 (21), 14400 (25), 16800 (43), 19200 (85), 21600 (91), 24000 (99), 26400 (103), 28800 (107), 31200 (151), 33600 (155), or 56000 (162) bps.
6/NO DIAL TONEDial tone not detected during the default 2 seconds, set in Register S6.
7/BUSYBusy signal detect; modem hangs up.
8/NO ANSWERAer waing 5 seconds for an answer, modem hangs up; returned instead of NO CARRIER when the @ opon is used.
11/RINGINGThe modem has dialed; remote phone line is ringing.
12/VOICEVoice answer at remote site; modem hangs up.
170/RING AIncoming disncve ring detected.
171/RING BIncoming disncve ring detected.
172/RING CIncoming disncve ring detected.
173/RING DIncoming disncve ring detected.
174/RING EIncoming disncve ring detected.
Wait for another Dial Tone (W)Courier Lite 56K Business Modem connues dialing as soon as it detects another dial tone. Requires X3 or higher.
Wait for an answer (@)Courier Lite 56K Business Modem connues dialing when it detects 5 seconds of silence on the line. Requires X3 or higher.

Result Codes Sets for Xn Values

Result CodesX0X1X2X3X4X5X6X7
0/OKxxxxxxxx
1/CONNECTxxxxxxxx
2/RINGxxxxxxxx
3/NO CARRIERxxxxxxxx
4/ERRORxxxxxxxx
5/CONNECT 1200xxxxxxx
6/NO DIAL TONExxxx
7/BUSYxxxxx
8/NO ANSWERxxxxx
10/CONNECT 2400xxxxxxx
11/RINGINGxxx
12/VOICExx
13/CONNECT 9600xxxxxxx
18/CONNECT 4800xxxxxxx
20/CONNECT 7200xxxxxxx
21/CONNECT 12000xxxxxxx
25/CONNECT 14400xxxxxxx
43/CONNECT 16800xxxxxxx
85/CONNECT 19200xxxxxxx
91/CONNECT 21600xxxxxxx
99/CONNECT 24000xxxxxxx
103/CONNECT 26400xxxxxxx
107/CONNECT 28800xxxxxxx
151/CONNECT 31200xxxxxxx
155/CONNECT 33600xxxxxxx
170/RING Axxxxxxx
171/RING Bxxxxxxx
172/RING Cxxxxxxx
173/RING Dxxxxxxx
174/RING Exxxxxxx
FunconsX0X1X2X3X4X5X6X7
Wait for 2nd Dial Tone (W)xxxxx
Wait for Answer (@)xxxxx

New Connect Messages

The table below includes all new connect messages.

Message#
28000256
28000/ARQ257
28000/V90258
28000/ARQ/V90259
29333260
29333/ARQ261
29333/V90262
29333/ARQ/V90263
30666264
30666/ARQ265
30666/V90266
30666/ARQ/V90267
32000268
32000/ARQ269
32000/V90270
32000/ARQ/V90271
34666272
34666/ARQ273
34666/V90274
34666/ARQ/V90275
36000276
36000/ARQ277
36000/V90278
36000/ARQ/V90279
38666280
38666/ARQ281
38666/V90282
38666/ARQ/V90283
40000284
40000/ARQ285
40000/V90286
40000/ARQ/V90287
33333/V90288
33333/ARQ/V90289
Message#
37333/V90290
37333/ARQ/V90291
41333/V90292
41333/ARQ/V90293
42666/V90294
42666/ARQ/V90295
44000/V90296
44000/ARQ/V90297
45333/V90298
45333/ARQ/V90299
46666/V90300
46666/ARQ/V90301
48000/V90302
48000/ARQ/V90303
49333/V90304
49333/ARQ/V90305
50666/V90306
50666/ARQ/V90307
52000/V90308
52000/ARQ/V90309
53333/V90310
53333/ARQ/V90311
54666/V90312
54666/ARQ/V90313
28000/V92348
28000/ARQ/V92349
29333/V92350
29333/ARQ/V92351
30666/V92352
30666/ARQ/V92353
32000/V92354
32000/ARQ/V92355
33333/V92356
33333/ARQ/V92357
Message#
34666/V92358
34666/ARQ/V92359
36000/V92360
36000/ARQ/V92361
37333/V92362
37333/ARQ/V92363
38666/V92364
38666/ARQ/V92365
40000/V92366
40000/ARQ/V92367
41333/V92368
41333/ARQ/V92369
42666/V92370
42666/ARQ/V92371
44000/V92372
44000/ARQ/V92373
45333/V92374
45333/ARQ/V92375
46666/V92376
46666/ARQ/V92377
48000/V92378
48000/ARQ/V92379
49333/V92380
49333/ARQ/V92381
50666/V92382
50666/ARQ/V92383
52000/V92384
52000/ARQ/V92385
53333/V92386
53333/ARQ/V92387
54666/V92388
54666/ARQ/V92389

Technical Information

Your modem uses mulple standard data communicaons protocols and is also compatible with many nonstandard schemes. The following schemes are supported:

  • Modulaon
  • Fax
  • Specicaons
  • Serial Ports
    • The EIA-232 Interface
    • Wiring a DB-25 to DB-9 Cable
    • Minimum Requirements
    • Flow Control Requirements

• Error Control, Data Compression, and Testing

Modulaon

This modulaonSupports
V.90 and V.92ITU 56K standard, server capabilities. 56 through 28 kbps; Pulse Coded Modulaon (PCM).
ITU-T V.3433.6/31.2/28.8/26.4/24/21.6/19.2/16.8/14.4/12 kbps; 9600/7200/4800 bps asynchronous Trellis Coded Modulaon (TCM)
V.FC28.8/26.4/24/21.6/19.2/16.8/14.4 kbps asynchronous TCM
V.32 terbo21.6/19.2/16.8/14.4/12 kbps; 9600/7200 bps asynchronous TCM; 4800 bp s asynchronous Quadrature Amplitude Modulaon (QAM)
ITU-T V.32 bis14.4/12 kbps; 9600/7200 bps asynchronous TCM; 4800 bps asynchronous QAM
ITU-T V.329600 bps asynchronous, TCM; 4800 bps asynchronous, QAM
ITU-T V.22 bis2400 bps asynchronous, QAM
Bell 212A1200 bps (also V.22) asynchronous, Dierenal Phase Shi Keying (DPSK)
ITU-T V.231200 bps asymmetrical with 75 bps back channel with Frequency Shi Keying (FSK), used by some U.K. and European phone systems.
Bell 103300 bps (ITU-T V.21 oponal) asynchronous, Frequency Shi Keying (FSK)

Error Control, Data Compression, and Tesng

This modulaonSupports
ITU-T V.42LAPM error control, 1200 bps and higher
MNPLevels 2, 3 and 4 error control, level 5 data compression, 1200 bps and higher
ITU-T V.42 bisData compression, 1200 bps and higher
ITU-T V.54Digital loopback tesng

Fax

Your Courier Lite 56K Business Modem provides Group III -compability when controlled by Class 1 or Class 2.0 fax soware. In addition, your Courier Lite 56K Business Modem adheres to the following standards:

This modulaonSupports
TIA/EIA-578Service Class 1 Asynchronous Facsimile DCE Control Standard
TIA/EIA-592Service Class 2.0 Asynchronous Facsimile DCE Control Standard
ITU-T V.1714.4/12 kbps, 9600/7200 bps
ITU-T V.299600/7200 bps
ITU-T V.27ter 4800/2400 bps
ITU-T V.21300 bps

Specicaons

This featureSupports
Supported serial port rates230400, 115200, 57600, 38400, 19200, 9600, 4800, 2400, 1200, and 300 bps
Serial port connectorDB-25
Communications channelFull- or half- duplex on 2-wire phone lines; symmetrical speeds in V.32 bis.
Data formatBinary, serial; defaults to 8-bit word length, no parity, and 1 stop bit.
Word LengthParity (1 Bit)Stop Bits
7Even, odd, mark, space1
7None2
8None1
Flow Control BuersVariable sizes
Command Buer60 characters, excluding the AT prex, Carriage Return, and spaces
Test OponsAnalog loopback, digital loopback, test paern, and dial test
Failed Call Timeout60 second default, programmable 2-255 sec.
Answer ToneTimeout60 seconds
Answer ToneDetector2080-2120 Hz
Loss of Carrier(Disconnect Timer)0.7 second default, programmable 0.2-25.5 sec.
EqualizaonAdapve
Receive Sensitivity-43 dBm + 2 dBm
Transmit Level-9 dBm maximum
TransmierFrequency Tolerance.01%
CercaonFCC approved (Part 15 Class B/Part 68)IC approvedUL listedCUL listedCE approved (Class B)
Ringer equivalence0.2B

5686G-PRO User Guide

Serial Ports

Most computers provide a DB-25 or DB-9 port that conforms to the EIA-232 standard.

The EIA-232 Interface

Your modem's serial port is factory set to signal according to the EIA -232 standard.

DB-25 Connector (Female) 7 - Signal Ground 6 - Data Set Ready 5 - Clear to Sand 4 - Request to Send 3 - Received Date 2 - Transmit Date 1 - Chassis Ground 8 - Carrier Detected 12 - Speech Indicated 15 - Synchronous Transmitter Timing 17 - Synchronous Receiver Timing 20 - Data Terminal Heady 22 - Ring Indicate 24 - Synchronous Transmitter Timing

Wiring a DB-25 to DB-9 Cable

DB-9 connectors for PCs should be wired at the computer end of the cable as shown below.

DB-25 Connector (Nalo) 8 to 1 - Carrier Detected 3 to 2 - Survival Data 2 to 3 - Transcript Data 7 to 4 - Signal Ground 22 to 9 - Ping Indicate 20 to 4 - Data Terminal Ready 5 to 6 - Clear to Send - to 7 - Request to Send 6 to 8 - Data Set Ready

Minimum Requirements

Some computer/terminal equipment supports only a few of your modem's EIA -232 signals. The minimum required for your modem to operate asynchronously follows:

DB-25DB-9Supports this signal
PinPinFuncon
23Transmied Data
32Received Data
75Signal Ground
204Data Terminal Ready

Flow Control Requirements

If your computer and soware support Clear to Send and you wish to use Transmit Data hardware ow control (&H1), Pin 5 (DB-25) or Pin 8 (DB-9) is required.

If your computer and soware support Request to Send and you wish to use Received Data hardware ow control (&R2), Pin 4 (DB-25) or Pin 7 (DB-9) is required.

ASCII Chart

DecHexChar
0000NUL
0101SOH
0202STX
0303ETX
0404EOT
0505ENQ
0606ACK
0707BEL
0808BS
0909HT
100ALF
110BVT
120CFF
130DCR
140ESO
150FSI
1610DLE
1711XON
1812DC2
1913XOFF
2014DC4
2115NAK
2216SYN
2317ETB
2418CAN
2519EM
DecHexChar
3220SP
3321!
3422
3523#
3624$
3725%
3826&
3927ë
4028(
4129)
422A*
432B+
442C'
452D-
462E.
472F/
48300
49311
50322
51333
52344
53355
54366
55377
56388
57399
DecHexChar
6440@
6541A
6642B
6743C
6844D
6945E
7046F
7147G
7248H
7349I
744AJ
754BK
764CL
774DM
784EN
794FO
8050P
8151Q
8252R
8353S
8454T
8555U
8656V
8757W
8858X
8959Y
DecHexChar
9660`
9761a
9862b
9963c
10064d
10165e
10266f
10367g
10468h
10569i
1066Aj
1076Bk
1086Cl
1096Dm
1106En
1116Fo
11270p
11371q
11472r
11573s
11674t
11775u
11876v
11977w
12078x
12179y
261ASUB
271BESC
281CFS
291DGS
301ERS
311FUS
DecHexChar
583A:
593B;
603C<
613D=
623E>
633F?
DecHexChar
905AZ
915B[
925C\
935D]
945Eà
955F_
DecHexChar
1227Az
1237B{
1247C|
1257D}
1267E~
1277FDEL

Fax Information for Programmers

• Fax Service Class 1 Commands
• Fax Service Class 2.0 Commands
• Fax Mode Flow Control Seng
- FCC Noce
- Notes

Fax Service Class 1 Commands

+FCLASS?What mode is in use Data or Fax?
+FCLASS=n (0,1,2,2.0,2.1)Class idencaon and control.
+FCLASS=?What Fax class is in use?
+FTS=n (0,255)Stop transmission and pause, 10 ms.
+FRS=n (0,255)Wait for silence, 10 ms.
+FTM=n (3,24,48,72,73,74,96,121,122,145,146)Transmit data with carrier.
+FRM=n (3,24,48,72,73,74,96,121,122,145,146)Receive data with carrier.
+FTH=n (3,24,48,72,73,74,96,121,122,145,146)Transmit HDLC data with carrier.
+FRH=n (3,24,48,72,73,74,96,121,122,145,146)Receive HDLC data with carrier.

Fax Service Class 2.0 Commands

In addition to the standard Class 2.0 fax commands, U.S. Robocs implements the following oponal Class 2.0 fax commands:

+FNS=0,1Pass-through, non-standard negoaon byte string
+FCR=0,1Capability to receive.
+FAA=0,1Adapve Answer mode.
+FCT=0-255 sec.Phase C Timeout
+FHS=0-255Hangup Status Code, read only.
+FMS=0-3Minimum Phase C Speed.
+FBS?=500,100Buer size, read only.

Fax Mode Flow Control Seng

Many facsimile soware products use soware ow control when the modem is in Fax mode. Throughout our documentaon, we recommend that you use hardware ow control for Data mode (factory seng). However, to allow compatibility with soware products that use soware ow control by default, U.S. Robocs fax modems automacally change to soware ow control when entering Fax mode.

FCC Noce

FCC part 68, rules regarding fax operaon, has been amended as follows:

Telephone facsimile machines idencaon of the sender of the message: It shall be unlawful for any person within the United States to use a computer or other electronic device to send any message via a telephone facsimile machine unless such a message clearly contains, in a margin at the top or boom of each transmied page or on the rst page of the transmission, the date and me it is sent and an idencaon of the business, other enty, or individual sending the message and the telephone number of the sending machine or of such business, other enty, or individual. Telephone facsimile machines manufactured on and aer December 20, 1992 must clearly mark such idenf ying informaon on each transmied page.

Notes

If you want to know more about the supported Class 1 fax commands, refer to the standard for the Service Class 1 fax protocol:

TIA/EIA-578-1990 (EIA-578)

Asynchronous Facsimile DCE Control Standard - Service Class 1

November 1990 Revision: B

5686G-PRO User Guide

For more informaon on Class 2.0, refer to the standard for the Service Class 2.0 fax protocol:

TIA/EIA-592-1998 (EIA-592)

Asynchronous Facsimile DCE Control Standard - Service Class 2

April 1998 Revision: A

You can obtain copies of these standards by contacng Global Engineering Documents at (800) 854 - 7179.

Viewing LEDs

This secon explains how to view the seven LEDs on the top of your Courier Lite 56K Business Modem.

56K Business Modem OFF ON AA CD RD SO TR CS ARQ/FAX Courier® Lite

This LEDStatusMeans your Courier Lite 56K Business Modem
AAOnIs ready to accept calls
BlinkingHas detected an incoming call
OffIs not ready to accept calls
CDOnHas detected a carrier from a remote device or carrier detect has been forced on (using DIP switch 6 or the &C0 command)
OffHas not detected a carrier
RDFlashingIs sending data to your computer
OffIs idle
SDFlashingIs receiving data from your computer
OffIs idle
TROnHas received a Data Terminal Ready (DTR) signal from your computer, or DTR is forced on (using DIP switch 1 or the &D0 command)
OffHas not detected DTR
CSOnIs sending your computer the Clear to Send (CTS) signal
OffIs not sending your computer the CTS signal
ARQ/FAXOnIs using V.42 bis error correcon
FlashingIs retransming data to the remote modem
BlinkingIs in fax mode
OffIs not using error control, not retransming data, and not faxing

WARRANTY

U.S. Robocs Corporaon Two (2) Year Limited Warranty

1.0 GENERAL TERMS:

1.1 This Limited Warranty is extended only to the original end -user purchaser (CUSTOMER) and is not transferable.
1.2 No agent, reseller, or business partner of U.S. Robocs Corporaon (U.S. ROBOTICS) is authorized to modify the terms of this Limited Warranty on behalf of U.S. ROBOTICS.
1.3 This Limited Warranty expressly excludes any product that has not been purchased as new from U.S. ROBOTICS or its authorized reseller.
1.4 This Limited Warranty is only applicable in the country or territory where the product is intended for use (As indicated by the Product Model Number and any local telecommunicao n approval sckers axed to the product).
1.5 U.S. ROBOTICS warrants to the CUSTOMER that this product will be free from defects in workmanship and materials, under normal use and service, for TWO (2) YEARS from the date of purchase from U.S. ROBOTICS or its authorized reseller.
1.6 U.S. ROBOTICS sole obligaon under this warranty shall be, at U.S. ROBOTICS sole discreon, to repair the defective product or part with new or reconditioned parts; or to exchange the defective product or part with a new or reconditioned product or part that is the same or similar; or if neither of the two foregoing opons is reasonably available, U.S. ROBOTICS may, at its sole discreon, provide a refund to the CUSTOMER not to exceed the latest published U.S. ROBOTICS recommended retail purchase price of the product, less any applicable service fees. All products or parts that are exchanged for replacement will become the property of U.S. ROBOTICS.
1.7 U.S. ROBOTICS warrants any replacement product or part for NINETY (90) DAYS from the date the product or part is shipped to Customer.
1.8 U.S. ROBOTICS makes no warranty or representa on that this product will meet CUSTOMER requirements or work in combina on with any hardware or soware products provided by third pares.
1.9 U.S. ROBOTICS makes no warranty or representaon that the operaon of the soware products provided with this product will be uninterrupted or error free, or that all defects in soware products will be corrected.
1.10 U.S. ROBOTICS shall not be responsible for any soware or other CUSTOMER data or informaon contained in or stored on this product.

2.0 CUSTOMER OBLIGATIONS:

2.1 CUSTOMER assumes full responsibility that this product meets CUSTOMER speciaons and requirements.
2.2 CUSTOMER is specifically advised to make a backup copy of all soware provided with this product.
2.3 CUSTOMER assumes full responsibility to properly install and congure this product and to ensure proper installaon, conguraon, operaon and compatibility with the operang environment in which this product is to funcon.
2.4 CUSTOMER must furnish U.S. ROBOTICS a dated Proof of Purchase (copy of original purchase receipt from U.S. ROBOTICS or its authorized reseller) for any warranty claims to be authorized.

3.0 OBTAINING WARRANTY SERVICE:

3.1 CUSTOMER must contact U.S. ROBOTICS Technical Support or an authorized U.S. ROBOTICS Service Center within the applicable warranty period to obtain warranty service authorizaon.
3.2 Customer must provide Product Model Number, Product Serial Number and dated Proof of Purchase (copy of original purchase receipt from U.S. ROBOTICS or its authorized reseller) to obtain warranty service authorizaon.
3.3 For informaon on how to contact U.S. ROBOTICS Technical Support or an authorized U.S. ROBOTICS Service Center, please see the U.S. ROBOTICS corporate Web site at: www.usr.com
3.4 CUSTOMER should have the following informaon / items readily available when contacng U.S. ROBOTICS Technical Support:

• Product Model Number
• Product Serial Number
- Dated Proof of Purchase
- CUSTOMER contact name & telephone number
- CUSTOMER Computer Operating System version
• U.S. ROBOTICS Installaon CD-ROM
• U.S. ROBOTICS Installaon Guide

4.0 WARRANTY REPLACEMENT:

4.1 In the event U.S. ROBOTICS Technical Support or its authorized U.S. ROBOTICS Service Center determines the product or part has a malfuncon or failure aributable directly to faulty workmanship and/or materials; and the product is within the TWO (2) YEAR warranty term; and the CUSTOMER will include a copy of the dated Proof of Purchase (original purchase receipt from U.S. ROBOTICS or its authorized reseller) with the product or part with the returned product or part, then

5686G-PRO User Guide

U.S. ROBOTICS will issue CUSTOMER a Return Material Authorizaon (RMA) and instrucons for the return of the product to the authorized U.S. ROBOTICS Drop Zone.
4.2 Any product or part returned to U.S. ROBOTICS without an RMA issued by U.S. ROBOTICS or its authorized U.S. ROBOTICS Service Center will be returned.
4.3 CUSTOMER agrees to pay shipping charges to return the product or part to the authorized U.S. ROBOTICS Return Center; to insure the product or assume the risk of loss or damage which may occur in transit; and to use a shipping container equivalent to the original packaging.
4.4 Responsibility for loss or damage does not transfer to U.S. ROBOTICS until the returned product or part is received as an authorized return at an authorized U.S. ROBOTICS Return Center.
4.5 Authorized CUSTOMER returns will be unpacked, visually inspected, and matched to the Product Model Number and Product Serial Number for which the RMA was authorized. The enclosed Proof of Purchase will be inspected for date of purchase and place of pur chase. U.S. ROBOTICS may deny warranty service if visual inspecon of the returned product or part does not match the CUSTOMER supplied informaon for which the RMA was issued.
4.6 Once a CUSTOMER return has been unpacked, visually inspected, and tested U.S. ROBOTICS will, at its sole discretion, repair or replace, using new or reconditioned product or parts, to whatever extent it deems necessary to restore the product or part to operang condion.
4.7 U.S. ROBOTICS will make reasonable eort to ship r epaired or replaced product or part to CUSTOMER, at U.S. ROBOTICS expense, not later than TWENTY ONE (21) DAYS aer U.S. ROBOTICS receives the authorized CUSTOMER return at an authorized U.S. ROBOTICS Return Center.
4.8 U.S. ROBOTICS shall not be liable for any damages caused by delay in delivering or furnishing repaired or replaced product or part.

5.0 LIMITATIONS:

5.1 THIRD-PARTY SOFTWARE: This U.S. ROBOTICS product may include or be bundled with third-party soware, the use of which is governed by separate end-user license agreements provided by third-party soware vendors. This U.S. ROBOTICS Limited Warranty does not apply to such third-party soware. For the applicable warranty refer to the end-user license agreement governing the use of such soware.
5.2 DAMAGE DUE TO MISUSE, NEGLECT, NON-COMPLIANCE, IMPROPER INSTALLATION, AND/OR ENVIRONMENTAL FACTORS: To the extent permied by applicable law, this U.S. ROBOTICS Limited Warranty does not apply to normal wear and tear; damage or loss of data due to interoperability with current and/or future versions of operang system or other current and/or future soware and hardware; alteraons (by persons other than U.S. ROBOTICS or authorized U.S. ROBOTICS Service Centers); damage caused by operator error or non-compliance with instrucons as set out in the user documentaon or other accompanying documentaon; damage caused by acts of nature such as

lightning, storms, oods, res, and earthquakes, etc. Products evidencing the product serial number has been tampered with or removed; misuse, neglect, and improper handling; damage caused by undue physical, temperature, or electrical stress; counterfeit products; damage or loss of data caused by a computer virus, worm, Trojan horse, or memory content corrup on; failures of the product which result from accident, abuse, misuse (including but not limited to improper installaon, connecan to incorrect voltages, and power points); failures caused by products not supplied by U.S. ROBOTICS; damage cause by moisture, corrosive environments, high voltage surges, shipping, abnormal working conditions; or the use of the product outside the borders of the country or territory intended for use (As indicated by the Product Model Number and any local telecommunicaon approval sckers axed to the product).

5.3 TO THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, TERMS, OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING WARRANTIES, TERMS, OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, SATISFACTORY QUALITY, CORRESPONDENCE WITH DESCRIPTION, AND NON -INFRINGEMENT, ALL OF WHICH ARE EXPRESSLY DISCLAIMED. U.S. ROBOTICS NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, WARRANTY, OR USE OF ITS PRODUCTS.

5.4 LIMITATION OF LIABILITY. TO THE FULL EXTENT ALLOWED BY LAW, U.S. ROBOTICS ALSO EXC LUDES FOR ITSELF AND ITS SUPPLIERS ANY LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING NEGLIGENCE), FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE OR PROFITS, LOSS OF BUSINESS, LOSS OF INFO RMATION OR DATA, OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, USE, PERFORMANCE, FAILURE, OR INTERRUPTION OF ITS PRODUCTS, EVEN IF U.S. ROBOTICS OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, AND LIMITS ITS LIABILITY TO REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT U.S. ROBOTICS OPTION. THIS DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE AFFECTED IF ANY REMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE.

6.0 DISCLAIMER:

Some countries, states, territories or provinces do not allow the exclusion or limitaon of implied warranes or the limitaon of incidental or consequential damages for certain products supplied to consumers, or the limitaon of liability for personal injury, so the above limitaons and exclusions may be limited in their applicaon to CUSTOMER. When the implied warranes are not allowed by law to be excluded in their enrety, they will be limited to the TWO (2) YEAR duraon of this written warranty. This warranty gives CUSTOMER specic legal rights, which may vary depending on local law.

5686G-PRO User Guide

7.0 GOVERNING LAW:

This Limited Warranty shall be governed by the laws of the State of Illinois, U.S.A. excluding its conicts of laws principles and excluding the United Naons Convenon on Contracts for the Internaonal Sale of Goods.

U.S. Robocs Corporaon

1300 E. Woodeld Road

Suite 506

Schaumburg, Illinois

60173

U.S.A.

REGULATORY

USRobotics Courier Lite - REGULATORY - 1

Declaraon of Conformity

U.S. Robocs Corporaon

1300 E. Woodeld Rd. Suite 506

Schaumburg, IL 60173

U.S.A.

declares that this product conforms to the FCC's specicaons:

Part 15, Class B

Operaon is subject to the following conditions:

1) this device may not cause harmful electromagnec interference, and
2) this device must accept any interference received including interference that may cause undesired operaons.

This equipment complies with Part 15 for Home and Oce use.

Cauon to the User: Any changes or modicaons not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Radio and Television Interference:

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protecon against harmful interference in a residential installaon. This equipment generates, uses and can radiate radio frequency energy. If this equipment is not installed and used in accordance with the manufacturer's instrucons, it may cause harmful interference to radio communicaons. However, there is no guarantee that interference will not occur in a particular installaon. If this equipment does cause harmful interference to radio or television recepon, which can be determined by turning the equipment o and on, the user is encouraged to try to correct the interference by one or more of the following measures:

  • Reorient or relocate the receiving antenna.
  • Increase the separaon between the equipment and receiver.
  • Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
  • Consult the dealer or an experienced radio/TV technician for help.

FCC Part 68 Registraon

Customer Informaon

This equipment complies with Part 68 of the FCC rules and the requirements adopted by the ACTA. On the boom of this equipment is a label that contains, among other informaon, a product idener in the format US: AAAEQ##TXXXX. If requested, this number must be provided to the telephone company.

This equipment uses the following Universal Service Order Code (USOC) jacks: RJ11C.

A plug and jack used to connect this equipment to the premises wiring and telephone network must comply with the applicable FCC Part 68 rules and requirements adopted by the ACTA. A compliant telephone cord modular plug is provided with this product. It is designed to be connected to a compatible modular jack that is also compliant. See this document for details.

The REN is used to determine the number of devices that may be connected to a telephone line. Excessive RENs on a telephone line may result in the devices not ringing in response to an incoming call. In most but not all areas, the sum of RENs should not exceed d ve (5.0). To be certain of the number of devices that may be connected to a line, as determined by the total RENs, contact the local telephone company. For products approved aer July 23, 2001, the REN for this product is part of the product idener that has the format US: AAAEQ##TXXXX. The digits represented by ## are the REN without a decimal point (e.g., 03 is a REN of 0.3).

If this equipment causes harm to the telephone network, the telephone company will nofy you in advance that temporary disconnuance of service may be required. But if advance noce is not

5686G-PRO User Guide

praccal, the telephone company will nofy the customer as soon as possible. Also, you will be advised of your right to le a complaint with the FCC if you believe it is necessary.

The telephone company may make changes in its facilities, equipment, operaons or procedures that could act the operaon of the equipment. If this happens, the telephone company will provide advance noce in order for you to make necessary modicaons to maintain uninterrupted service.

If the equipment is causing harm to the telephone network, the telephone company may request that you disconnect the equipment until the problem is resolved.

There are no serviceable parts in this equipment.

If your home has specially wired alarm equipment connected to the telephone line, ensure the installaon of this equipment does not disable your alarm equipment. If you have quesons about what will disable alarm equipment, consult your telephone company or a qualified installer.

UL Lisng/CUL Lisng:

If you use your own telephone cable, you must use a minimum No. 26 AWG and FCC compliant telephone cable.

This product is intended to have power supplied by a Listed Direct Plug-in Power Adapter marked Class 2 and rated 9V DC or 15V DC, 1000 mA.

This informaon technology equipment is UL Listed and C-UL Listed for both the US and Canadian markets respectively for the uses described in the User Guide. Use this product only with UL Listed Informaon Technology Equipment (ITE).

Fax Branding:

The Telephone Consumer Protecon Act of 1991 makes it unlawful for any person to use a computer or other electronic device, including fax machines, to send any message unless such message clearly contains in the margin at the top or boom of each transmied page or on the rst page of the transmission, the date and me it is sent, an idencaon of the business or other enty, or other individual sending the message, and the telephone number of the sending machine or of such business, other enty, or individual. (The telephone number provided may not be a 900 number or any other number for which charges exceed local or long -distance transmission charges.) In order to program this informaon into your modem, refer to the documentaon of your third-party fax sware.

5686G-PRO User Guide

For Canadian Modem Users

Industry Canada (IC)

This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the interference-causing equipment standard entled Digital Apparatus, ICES-003 of Industry Canada.

Customer Informaon

Noce: This equipment meets the applicable Industry Canada Terminal Equipment Technical Specicaons. This is conrmed by the registraon number. The abbreviaon, IC, before the registraon number signies that registraon was performed based on a Declaraon of Conformity indicang that Industry Canada technical specicaons were met. It does not imply that Industry Canada approved the equipment.

Notice: The Ringer Equivalence Number (REN) for this terminal equipment is 0.2B. The REN assigned to each terminal equipment provides an indication of the maximum number of terminals allowed to be connected to a telephone interface. The termination on an interface may consist of any combinaon of devices subject only to the requirement that the sum of the Ringer Equivalence Numbers of all the devices does not exceed ve.

USRobotics Courier Lite - Customer Informaon - 1

CE Compliance

Declaraon of Conformity

We, U.S. Robocs Corporaon of 1300 E. Woodeld Rd. Suite 506, Schaumburg, Illinois, 60173 -5446 USA, declare under our sole responsibility that the product, USRobocs Courier Lite 56K Business Modem, Model 5686G-PRO, to which this declaraon relates, is in conformity with the following standards and/or other normave documents.

EN60950-1

EN55022

EN55024

EN61000-3-2

EN61000-3-3

We hereby declare that the above named product is in conformity with the essenal requirements and other relevant provisions of Direcve 1999/5/EC.

5686G-PRO User Guide

The conformity assessment procedure referred to in Arcle 10(3) and detailed in Annex II of Directive 1999/5/EC has been followed.

An electronic copy of the original CE Declaraon of Conformity is available at the U.S. Robocs website: www.usr.com

Network Compatibility Declaraon

This equipment is designed to work sasfactorily on all European Union PSTN (Public Switching Telephone Network) networks.

This equipment is supplied with a suitable PSTN connector for the country in which it was supplied. If it is required to use this equipment on a dierent network to the one for which it was supplied, the user is advised to contact the vendor for guidance regarding conncon.

U.S. Robocs Corporaon

1300 E. Woodeld Rd., Suite 506

Schaumburg, Illinois

60173-5446

USA

No part of this documentaon may be reproduced in any form or by any means or used to make any derivative work (such as a translaon, transformaon, or adaptaon) without written permission from U.S. Robocs Corporaon. U.S. Robocs Corporaon reserves the right to revise this documentaon and to make changes in the products and/or content of this document from me to me without obligaon to provide nocaon of such revision or change. U.S. Robocs Corporaon provides this documentaon without warranty of any kind, either implied or expressed, including, but not limited to, implied warranties of merchantability and tness for a particular purpose. If there is any soware on removable media described in this documentaon, it is furnished under a license agreement included with the product as a separate document, in the hard copy documentaon, or on the removable media in a directory named LICENSE. If you are unable to locate a copy, please contact U.S. Robocs and a copy will be provided to you.

UNITED STATES GOVERNMENT LEGEND If you are a United States government agency, then this documentaon and the soware described herein are provided to you subject to the following:

All technical data and computer soware are commercial in nature and developed solely at private expense. Soware is delivered as “Commercial Computer Soware” as denied in DFARS 252.227 - 7014 (June 1995) or as a “commercial item” as defined in FAR 2.101(a) and as such is provided with only such rights as are provided in U.S. Robocs standard commercial license for the Soware. Technical data is provided with limited rights only as provided in DFAR 252.227 -7015 (Nov 1995) or FAR 52.227-14 (June 1987) whichever is applicable. You agree not to remove or deface any poron of any legend provided on any licensed program or documentaon contained in, or delivered to you in conjuncon with, this User Guide.

Copyright © 2018 U.S. Robocs Corporaon. All rights reserved. U.S. Robocs and the U.S. Robocs logo are registered trademarks of U.S. Robocs Corporaon. Other product names are for idencaon purposes only and may be trademarks of their respective companies. Product specicaons subject to change without noce.

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Product information

Brand : USRobotics

Model : Courier Lite

Category : Modem