SIP-T42G - Telephony Yealink - Free user manual and instructions
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| Product Type | IP Phone with LCD Display |
| Brand | Yealink |
| Model | SIP-T42G |
| Display | 2.8-inch 320 x 240 pixel color LCD |
| Line Keys | 2 line keys with dual-color LEDs |
| Network Protocols | SIP (RFC3261), TCP/IP, UDP, RTP/RTCP, HTTP, HTTPS, DNS, DHCP, FTP, TFTP |
| Audio Features | HD voice, echo cancellation, noise suppression |
| Power Supply | PoE (IEEE 802.3af) or external AC adapter (5V, 1.2A) |
| Dimensions (W x D x H) | 240 x 185 x 42 mm (without handset) |
| Weight | 0.72 kg (including handset, stand) |
| Ethernet Ports | 2x RJ-45 10/100 Mbps (PC pass-through) |
| Headset Jack | RJ-9 headset jack (EHS support) |
| Speakerphone | Full-duplex speakerphone with HD audio |
| Wall Mountable | Yes (bracket included) |
| Key Features | Call hold, transfer, forward, conference, redial, mute, DND, intercom, LDAP |
| Security | Transport Layer Security (TLS), SRTP encryption, 802.1X authentication |
| Maintenance & Cleaning | Clean with dry soft cloth; avoid liquids and abrasive materials |
| Spare Parts & Reparability | Compatible with Yealink expansion modules EXP20; handset and headset replaceable |
Frequently Asked Questions - SIP-T42G Yealink
How do I set up the Yealink SIP-T42G for the first time?
Connect the phone to your network via Ethernet, provide power via PoE or AC adapter, then configure SIP account settings through the web interface at the phone's IP address.
How can I check or change the IP address of my SIP-T42G?
Press the OK key, navigate to Status > Network Status to view the IP. To change, go to Menu > Settings > Advanced > Network > IPv4 and set to static or DHCP.
How do I configure voicemail on the SIP-T42G?
Ensure your SIP server supports voicemail, then subscribe to the MWI service. Use the Message key to access voicemail. Configure the voicemail number in Menu > Features > Voice Mail.
How can I transfer a call?
During an active call, press the Transfer key. Enter the target number, then press Transfer again for blind transfer, or wait for the recipient to answer and then press Transfer for attended transfer.
How do I set up speed dial keys?
Go to Menu > Features > DSS Keys. Select a line key, set Type to Speed Dial, and enter the number and label.
Does the SIP-T42G support Power over Ethernet (PoE)?
Yes, it supports IEEE 802.3af PoE. Use a PoE switch or injector to power the phone without an AC adapter.
How can I reset the phone to factory defaults?
Go to Menu > Settings > Advanced > Reset. Enter the admin password (default: admin) and confirm. The phone will reboot with factory settings.
Can I use a wireless headset with the SIP-T42G?
Yes, via the RJ-9 headset jack. For DECT or Bluetooth, use a compatible headset adapter or the Yealink EHS40 cable for electronic hook switch.
How do I upgrade the firmware on the SIP-T42G?
Access the web interface, go to Settings > Upgrade. Enter the firmware server URL or upload a .rom file. Click Upgrade. The phone will reboot after installation.
What security features are available on the SIP-T42G?
The phone supports TLS for SIP signaling, SRTP for media encryption, 802.1X for network authentication, and HTTPS for web management.
User questions about SIP-T42G Yealink
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USER MANUAL SIP-T42G Yealink
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Product information
Brand : Yealink
Model : SIP-T42G
Category : Telephony