The SIP-T21P uses an extra-large 132 x 64-pixel graphical LCD showing a clear 5-line data display offering smoother user experience plus HD voice. This phone uses dual 10/100 mbps network ports that are ideal for extended network use. T21 supports two VoIP accounts, simple, flexible and secure installation options, plus support for IPV6, open VPN and a redundancy server.
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
- XMLbrowser, 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.
Features:
- Also features a 2 x 16 line LCD
- Call hold, call waiting, call transfer, call forward, caller id, call list, DND, redial, flash, 3-way conference and more
- Two-port 10/100m Ethernet switch