Yealink T42G VoIP-SIP telephone, 3-Line w/ PoE

 Yealink T42G

The Yealink T42G is an entry level and feature-rich sip phone for business, and with 3-Lines, this IP Phone has been designed to deliver a superb sound quality as well as rich visual experience. This Yealink T42G IP Phone supports seamless migration to GigE-based network infrastructure, and with programmable Keys it supports vast productivity-enhancing features. This handset also uses standard encryption protocols to perform highly secure remote provisioning and software upgrades.

Yealink T42G

Key Features

  • Revolutionarily new design with Optima HD voice
  • Dual-port 10/100/1000 Gigabit Ethernet
  • 2.7″ 192×64-pixel graphical LCD with backlight
  • Up to 3 SIP accounts
  • Power over Ethernet (PoE) support
  • Headset, EHS support
  • Integrated stand with 2 adjustable angles
  • Simple, flexible and secure provisioning options


Audio Features


  • HD voice: HD handset, HD speaker
  • Wideband codec: G.722
  • Narrowband codec: G.711(A/µ), G.723, G.729AB, G.726
  • DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO
  • Full-duplex hands-free speakerphone with AEC
Phone Features


  • 3 VoIP accounts
  • One-touch speed dial, redial, call forward, Call waiting, Call transfer, Call hold, Call return, Group listening, Mute, Auto answer, DND, SMS
  • Call history: dialled/received/missed/forwarded
  • 3-way conference call
  • 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
Display and Indicator


  • 2.8” 192×64-pixel 4-level greyscale graphical
  • LCD with backlight
  • LED for call and message waiting indication
  • Dual-colour (red or green) illuminated LEDs for line status information
  • Intuitive user interface with icons and soft keys
  • National language selection
  • Caller ID with name, number
Feature Keys


  • 6 line keys with LED
  • 6 line keys can be programmed 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 key
  • Illuminated headset key
  • Illuminated hands-free speakerphone
Other Physical Features


  • Stand with 2 adjustable angles
  • Wall mountable
  • Power adapter: AC 100~240V input and DC 5V/ 1.2A output
  • Dimensions (W x D x H x T): 212mm x 189mm x 175mm x 54mm
  • Operating humidity: 10~95%
  • Storage temperature: -10~50°C
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/PPPoE
  • HTTP/HTTPS web server