| Model |
Yealink SIP-T48U |
| Display |
7-inch (800×480) color LCD touchscreen |
| Audio |
HD Voice, full-duplex speakerphone |
| Codecs |
G.711(A/U), G.722, G.729, iLBC, OPUS |
| Networking |
2 x 10/100/1000 Ethernet ports (RJ45) |
| Power |
PoE (Power over Ethernet) or DC 5V/2A |
| Connectivity |
1 x RJ9 (Headset), 1 x USB 2.0 |
| Programmable Keys |
27 x programmable keys (including soft keys) |
| Line Keys |
16 x line keys (with 16 additional pages) |
| Feature Keys |
Mute, Headset, Redial, Message, Volume Up/Down, Directory, Conference |
| Support for Protocols |
SIP (Session Initiation Protocol), IPv4/IPv6 |
| Dimensions |
267mm x 233mm x 55mm (10.5 x 9.2 x 2.2 in) |
| Weight |
1.08 kg (2.38 lbs) |
| Wall Mountable |
Yes, with optional mount kit |
| Additional Features |
Support for VLAN, QoS, SRTP, TLS, HTTPS, Bluetooth (with USB dongle); 16-way conferencing |
