Yealink Optima HD voice

Codecs: Opus, G.722, G.711(A/u), G.723, G.729AB, G.726, iLBC

Dual-port Gigabit Ethernet

Display: 7″ 800×480 pixel color touch screen with backlight

29 one-touch DSS keys

Built-in USB port allows support for Bluetooth headset with BT41 dongle or WiFi access with WF40 dongle

Up to 16 SIP accounts

Paper label-free design

Local phonebook with up to 1,000 entries

RJ9 headset port with EHS support (see EHS36 wireless headset adapter)

Supports up to 6 EXP40 expansion modules

Wall mountable (with kit WMB-T48)

PoE 802.3af

Power supply not included (PS5V2000US)

Upgrades from T48G

Device performance enhancement with faster response on the phone’s user interface

Opus support

Enhanced speaker performance

United firmware

Hearing aid compatible handset

 California Prop 65 Warning