| Model |
Yealink SIP-T31P |
| Display |
2.3-inch (132×64) LCD backlit screen |
| Audio |
HD Voice, full-duplex speakerphone |
| Codecs |
G.711(A/U), G.722, G.729, iLBC |
| Networking |
1 x 10/100 Ethernet port (RJ45) |
| Power |
PoE (Power over Ethernet) or DC 5V/600mA |
| Connectivity |
1 x RJ9 (Headset) |
| Programmable Keys |
2 x XML programmable keys |
| Line Keys |
2 x line keys (fixed) |
| Feature Keys |
Mute, Headset, Redial, Message, Volume Up/Down |
| Support for Protocols |
SIP (Session Initiation Protocol) |
| Dimensions |
185mm x 165mm x 52mm (7.28 x 6.5 x 2.05 in) |
| Weight |
0.6 kg (1.32 lbs) |
| Wall Mountable |
Yes, with optional mount kit |
| Additional Features |
Support for IPv4, VLAN, QoS, SRTP, and TLS |
