Yealink – T40G


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, EHS support
Integrated stand with 2 adjustable angles
Wall mountable
Simple, flexible and secure provisioning options



Audio Features
HD voice: HD handset, HD speaker
Wideband codec: G.722
Narrowband codec: G.711(A/ micron ), G.729AB, G.726
DTMF: In-band, Out-of-band(RFC 2833) and SIP

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, SMS
Mute, auto answer, DND
3-way conference call
Direct IP call without SIP proxy
Ringtone selection/import/delete
Hotline, emergency call
Set date time manually or automatically
Dial Plan
xML Browser
Action URL/URI

Local phonebook up to 1000 entries
xML/LDAP remote phonebook
Intelligent search method
Phonebook search/import/export
Call history: dialled/received/missed/forwarded

IP-PBX Features
Busy Lamp Field (BLF)
Bridged Line Appearance(BLA)
Anonymous call, anonymous call rejection
Message Waiting Indicator (MWI)
Call park, call pickup
Intercom, paging
Music on hold
Call recording

Display and Indicator
2.3″ 132×64-pixel graphical LCD with backlight
LED for call and message waiting for an indication
Dual-color (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
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

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 approx. 240V input and DC 5V/600mA output
Power consumption (PSU): 1.05-3.23W
Power consumption (PoE): 1.7-3.2W
Dimension(W x D x H x T):
212mm x 189mm x 175mm x 54mm
Operating humidity: 10 approx. 95%
Operating temperature: -10 approx. 50 degrees C

Package Features
Qty/CTN: 5 PCS
N.W/CTN: 5.7 kg
G.W/CTN: 6.4 kg
Gift box size: 246mm x 223mm x 120mm
Carton Meas: 620mm x 256mm x 233mm

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 the configuration file
Digest authentication using MD5/MD5-sess
OpenVPN, IEEE802.1x