Yealink SIP-T42G

12 Line IP Phone, Dual Gigabit, 2.7″ Backlit LCD Display, Optima HD Audio

The SIP-T42G is Yealink latest feature-rich SIP business phone. Packed with productivity enhancing features including SCA, BLF List, call forward, call transfer and 3-way conference, Yealink's Optima HD technology delivers crystal clear audio.
The SIP-T42G, part of Yealink's new generation T4 series, is a feature-rich SIP phone designed for today's business user. This 12-Line IP phone has an elegane and ergonomic design that ensure easy, accurate use of all operations on the handset. Yealink's Optima Audio technology deliver superb sound quality, and the 2.7″ inch 192×64 graphical LCD screen provides a rich visual experience. dual LAN ports support seamless integration to Gigabit Ethernet based network infrastructure. The SIP-T42G's 6 navigation keys, 5 dedicated feature keys (message, headset, mute, redial and hands-free speakerphone ) and 4 context-sensitive softkeys makes it easy to access the wide range of productivity-enhancing features. support for the latest standards-based encryption protocols ensure highly secure operation of the handset, including remote provisioning and software upgrades.

A prominently displayed 'message waiting' LED and six line keys, each with an associated LED indicator provide 'at a glance' information to phone users.

The SIP-T42G has an adjustable integrated stand with two viewing positions – or can be wall mounted. (Optional Wall Mount Bracket)


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• Part of the T4 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 12 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)
• Power Adapter Optional


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
• 12 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


SIP-T42G Datasheet
T4 Series Brochure
Yealink IP Phone Comparison Chart


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