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IP Phones and Terminals / Yealink
Yealink SIP-T31 / SIP-T31G
The Yealink SIP-T31 and its Gigabit version, the SIP-T31G, are entry-level to mid-range IP phones that combine solid performance, support for two SIP accounts, and enhanced features without significantly increasing cost. They are designed for administrative users, customer service teams, and staff who manage more than one line.
Main features
- Up to 2 lines and 2 SIP accounts
- 2.3″ graphical LCD display (132×64 px) with backlight
- HD audio on handset and speaker
- Full-duplex hands-free speakerphone
- Support for advanced codecs (G.722, Opus, G.711, G.729, among others)
- Local conference of up to 5 participants
- 2 Ethernet ports; Gigabit in the T31G version
- PoE support depending on the model
- Compatible with EHS adapter for wireless headsets
- Local phonebook with up to 1,000 entries
- Advanced telephony features: call transfer, call forwarding, hold, DND, speed dial, direct calls, and full call history
- Adjustable stand and wall-mount compatible
- Web configuration, auto-provisioning, and remote management
Technical specifications
Display
2.3” backlit LCD
Audio
HD with hands-free speakerphone
Codecs
G.722, Opus, G.711, G.726, G.729, iLBC, G.723.1
Conference
Up to 5-way
Network Ports
2 × RJ45 (T31: 10/100 Mbps, T31G: 10/100/1000 Mbps)
PoE
Yes (depending on model)
Headsets
EHS and RJ9
Contacts
Up to 1,000
Functions
Transfer, forwarding, call history, DND, speed dial
Mounting
Desktop or wall
Security
Standard SIP, QoS, authentication, and secure provisioning
About the brand
The SIP-T31/T31G is one of the most widely used models in companies seeking a well-balanced VoIP solution in terms of cost and features. It enables operation with two accounts, improved connectivity, and greater flexibility, making it suitable for small and medium-sized offices, administrative areas, and reception desks.