Revolutionarily new design

 Yealink Optima HD voice

2.3″ 132×64-pixel graphical LCD with backlight

Up to 3 SIP accounts

Paper label free design

PoE support

Headset, electronic hook switch (EHS) support

 Stand with two adjustable angles

 Wall mountable

[Title name=’Description’]Yealink SIP-T40G is a feature-rich SIP phone that enhances daily interoperability and unifys communications for busymanagers. Designed with a revolutionary new appearance, it supports flexible and secure provisioning (the phoneutilizes industry-standard encryption protocols for users to provision and perform software upgrades both in-house and remotely), this advanced IP phone is intuitively designed with ease-of-use in mind. The T40G is also built with the Gigabit Ethernet for rapidly facilitating call handling, and its programmable keys help boast extensive productivity-enhancing features, like BLF, SCA, call transfer, etc. Meanwhile, equipped with the feature of Power over Ethernet (PoE), superb high definition (HD) sound quality and a rich visual experience, the SIP-T40G IP Phone maximizes your personal productivity in a superior way.[/Title][Title name=’Features’]

– 3 VoIP accounts
– One-touch speed dial, redial
– Call forward, call waiting
– Call transfer, call hold
– Call return, group listening, SMS
– Mute, auto answer, DND
– 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/URI
– RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
– Enhanced DSS Key

Audio Features

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


– Local phonebook up to 1000 entries
– Black list
– XML/LDAP remote phonebook
– Smart dialing
– Phonebook search/import/export
– Call history: dialed/received/missed/forwarded

IP-PBX  Features

– Busy Lamp Field (BLF), BLF list
– Bridged Line Apperance(BLA)/SCA
– Anonymous call, anonymous call rejection
– Hot-desking, voice mail
– Message Waiting Indicator (MWI)
– Call park, call pickup
– Intercom, paging, music on hold
– Call recording
– Flexible seating
– Executive and Assistant
– Centralized call recording
– Visual Voice Mail

Display and Indicator

– 2.3″ 132×64-pixel graphical LCD with backlight
– 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
– Multilingual user interface
– Caller ID with name and number
– Power saving

Feature keys

– 3 line keys with LED
– 5 features keys: message, headset, mute,
redial, hands-free speakerphone
– 4 context-sensitive “soft” keys
– 6 navigation keys
– 2 volume control keys
– Mute key
– Headset key
– Hands-free speakerphone key


– Dual-port Gigabit Ethernet
– 2xRJ45 10/100M Ethernet ports
– 1xRJ9 (4P4C) handset port
– 1xRJ9 (4P4C) headset port
– 1XRJ12 (6P6C) EHS port
-Power over Ethernet (IEEE 802.3af), Class 2

Other Physical Features

– Stand with 2 adjustable angles
– Wall mountable
– External universal AC adapter (optional):
AC 100~240V input and DC 5V/600mA output
– Power consumption (PSU): 0.9-1.3W
– Power consumption (PoE): 1.1-1.6W
– Dimension(W*D*H*T):
– Operating humidity: 10~95%
– Operating temperature: -10~50°C

Package Features

• Package content:
– Yealink SIP-T40G IP phone
– Handset with handset cord
– Ethernet Cable
– Stand
– Quick Start Guide
– Power Adapter (Optional)
• Qty/CTN: 5 PCS
• N.W/CTN: 5.7 kg
• G.W/CTN: 6.4 kg
• Giftbox size: 246mm*223mm*120mm
• Carton Meas: 620mm*233mm*258mm


– Configuration: browser/phone/auto-provision
– Auto provision via FTP/TFTP/HTTP/HTTPS
for mass deploy
– Auto-provision with PnP
– BroadSoft device management
– Zero-sp-touch TR-069
– Phone lock for personal privacy protection
– Reset to factory, reboot
– Package tracing export, system log

Network and Security

– SIP v1 (RFC2543), v2 (RFC3261)
– Call server redundancy supported
– 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
– 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


[Title name=’Datasheet’] Yealink SIP-T40G Datasheet [/Title] [1234]