Yealink SIP-T54W with Power Supply

Phone Features
16 VoIP accounts
Call hold, call forward, call waiting, call transfer
One-touch speed dial, hotline, mute, DND
Group listening, hotline, 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)
Built-in dual-band Wi-Fi:
Network standard: IEEE802.11a/b/g/n/ac
Transmission rate: Up to 433Mbps (dynamic)
Frequency range: 2.4GHz/5.0GHz
Built-in Bluetooth for:
Bluetooth headset,
Mobile contacts synchronization
Bluetooth call
USB port (2.0 compliant) for:
Wired/wireless USB headset
USB call recording through USB flash drive
Expansion module EXP50 (up to 3)
Content Sharing (via Yealink VCD)
Enhanced DSS key