The SIP-T42G is a feature-rich sip phone for business. The 12-Line IP Phone has been designed by pursuing ease of use in even the tiniest details. Delivering a superb sound quality as well as rich visual experience. Supports seamless migration to GigE-based network infrastructure. With programmable Keys, the IP Phone supports vast productivity-enhancing features. Using standard encryption protocols to perform highly secure remote provisioning and software upgrades.





  • Part of theT4 series - revolutionarily new design
  • Yealink Optima HD voice for crystal clear audio
  • Dual-port Gigabit Ethernet
  • Sparkling 2.7"" 192 x 64 pixel graphical LCD display with backlight
  • Up to 3 SIP accounts
  • Paper label free design


  • PoE support


  • Headset and EHS


  • simple, flexible and secure provisioing options


  • Integrated stand with 2 adjustable viewing angles


  • Wall mountable (Optional Wall Mount Bracket)

Audio Features


  • HD voice: HD handset, HD speaker


  • Codecs: G.722, G.711(A/µ), G.723, G.729AB, G.726, GSM


  • DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO


  • Full-duplex hands-free speakerphone with AEC



Phone Features

  • 3 VoIP accounts


  • Call hold, mute, DND


  • One-touch speed dial, redial


  • Call forward, call waiting, call transfer, call hold


  • Group listening, call return


  • Mute, auto answer, DND


  • Call history: dialed/received/missed/forwarded


  • 3-way confernecing


  • Direct IP call without SIP proxy


  • Ring tone selection/import/delete


  • Hotline, emergency call


  • Set date time manually or automatically


  • Dial plan, XML Browser, action URL



  • Local phonebook up to 1000 entries


  • BroadSoft contacts: custom/enterprise/personal/common/search/speed dial
IP-PBX and BroadSoft Features


  • Busy Lamp Field (BLF), BLF list


  • Bridged Line Apperance(BLA)/SCA


  • Anonymous call, Anonymous call rejection


  • DND & forward synchronization


  • BroadWorks Anywhere


  • N-Way Calling, remote office


  • Message Waiting Indicator (MWI)


  • BroadSoft call center features


  • Voice mail, call park, call pickup


  • Intercom, paging, music on hold


  • Call recording, hot-desking

Display and Indicator


  • 2.7" 192 x 64-pixel 4-level grayscale graphical LCD display with backlight


  • Caller ID with name, number


  • LED for call and message waiting indication


  • Dual-color (red or green) illuminated LEDs for line status information


  • Intuitive user interface with icons and soft keys

Feature keys


  • 6 line keys with LED


  • 6 line keys can be programmed for up to 15 various features (3-page view)


  • 5 features keys: message, headset, mute, redial, hands-free speakerphone


  • 4 context-sensitive “soft” keys


  • 6 navigation keys


  • 2 volume control keys


  • Illuminated mute, headset and speakerphone key


  • Dual-port Gigabit Ethernet


  • 1xRJ9 (4P4C) handset port


  • 1xRJ9 (4P4C) headset port


  • Power over Ethernet (IEEE 802.3af), Class 3

Other Physical Features


  • Stand with 2 adjustable angles


  • Wall mountable

          * External universal AC adapter (optional):


  • AC 100-240V input and DC 5V/1.2A output



  • Configuration: browser/phone/auto-provision


  • Auto provision via FTP/TFTP/HTTP/HTTPS for mass deployment


  • Auto-provision with PnP


  • BroadSoft device management


  • Zero-sp-touch


  • Provisioning server redundancy supported

Network and Security


  • SIP v1 (RFC2543), v2 (RFC3261)


  • NAT transverse: STUN mode


  • Proxy mode and peer-to-peer SIP link mode


  • IP assignment: static/DHCP


  • HTTP/HTTPS web server


  • Time and date synchronization using SNTP




  • QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP


  • SRTP for voice


  • Transport Layer Security (TLS)


  • HTTPS certificate manager


  • AES encryption for configuration file


  • Digest authentication using MD5/MD5-sess


  • OpenVPN, IEEE802.1X


  • IPv6
Barcode # 6938818300750
Brand Yealink
Shipping Weight 1.5000kg
Shipping Width 0.220m
Shipping Height 0.130m
Shipping Length 0.250m
Shipping Cubic 0.007150m3
Manufacturer Warranty
1 Year Limited Warranty


By: on 10 April 2015
Rock solid device, works well in ours and customer environments

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