Yealink Optima HD Voice

Codecs: Opus, G.722, G.711 (A/u), G.723.1, G.729AB, G.726

Display: 2.7″ 192×64 pixel graphical LCD with backlight

Up to 6 SIP accounts

6 Line keys with dual color LEDs can be programmed with up to 15 features (3 page view)

4 Soft Keys

Paper label-free design

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

Wall mountable with WMB-T4S kit

Two 10/100M Ethernet ports

PoE 802.3af, class 2

No power supply included (PS5V1200US)

Upgrades from T41P

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

Opus support

Enhanced speaker performance

USB port for Bluetooth headset with BT41 dongle or WiFi support with WF40 dongle

United firmware

Hearing aid compatible handset

 California Prop 65 Warning