Feature

●This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com
●Also features a 2 x 16 line lcd
●Features: Call hold, call waiting, call transfer, call forward, caller id, call list, dnd, redial, flash, 3-way conference and much more
●Two-port 10/100m Ethernet switch


Description

The SIP-T21 uses an extra-large 132 x 64-pixel graphical LCD showing a clear 5-line data display offering smoother user experience plus HD Voice characteristics. This phone uses dual 10/100 Mbps network ports that are ideal for extended network use with T21 supports two VoIP account, simple, flexible and secure installation options, plus support for IPv6, Open VPN and a redundancy server. Specification > Audio Features > HD voice: HD handset, HD speaker > DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO > Full-duplex hands-free speakerphone with AEC > VAD, CNG, AEC, PLC, AJB, AGC Phone Features > 2 VoIP accounts > Call hold, mute, DND > One-touch speed dial, hotline > Call forward, call waiting, call transfer > Group listening, SMS, emergency call > Redial, call return, auto answer > Local 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 > Integrated Screenshots > RTCP-XR Interface > 2xRJ45 10/100M Ethernet ports >Power over Ethernet (IEEE 802.3af), class 2 > 1xRJ9 (4P4C) handset port > 1xRJ9 (4P4C) headset port. POE (Powered over Ethernet), power supply not included.