Yealink SIP-T53 with Power Supply

Phone Features
Yealink’s SDK (Software Development Kit)
16 VoIP accounts
Call hold, mute, DND
Redial, call return, auto answer
One-touch speed dial, hotline
Call forward, call waiting, call transfer
Group listening, SMS, emergency call
3-way conferencing
Direct IP call without SIP proxy
Ring tone selection/import/delete
Set date time manually or automatically
Dial plan, XML Browser, Action URL/URI
RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
USB port (2.0 compliant) for:
Wired/wireless USB headset
USB call recording through USB flash drive
Bluetooth headset through BT40
Bluetooth call through BT40
Mobile contacts synchronization through BT40
Wi-Fi through WF40/WF50
Expansion module EXP50 (up to 3)
Content sharing (via Yealink VCD)(1)
Enhanced DSS key
Corded-Cordless Phone (via DECT Dongle DD10K)
Up to 4 DECT cordless handsets
Up to 4 concurrent calls
Support Yealink W52H/W53H/W56H/DD Phone
Slave Handset for Master Deskset
IP-PBX Features
Busy Lamp Field (BLF)
Bridged Line Appearance (BLA)
Anonymous call, anonymous call rejection
Hot desking
Voice mail
Flexible seating
Executive and Assistant
Call park, call pickup
Centralized call recording
Call recording