IP phone (SIP/IAX2/H323)

1. call hold;

2. Unattended/ attended call transfer

3. call waiting and per call-waiting blocking

4. call forward (Always, busy, no answer, power off)

5. voip speed dial

6. VoIP digital map

7. user define ring tone

8. E.164 dial plan and customize dial rules

9. caller number/name display

10. voice promote

11. configurable jitter buffer size

12. configurable audio frame

13. Support Bridge and Router model Support H323 and dual public server.

14. data features:Static/Dynamic WAN-IP-Addressing PPPoE

15. Interfaces:1 X WAN1 X LAN

Supported specification and applications

1. Support Bridge and Router model.

2. Telnet:Internet's remote login protocol

3. SIP RFC3261

4. H323

5. Tone generation and Local DTMF re-generation according with ITU-T

6. G.711(A-law or u-law)

7. G.723.1(6.3kbps,5.3 kbps)

8. G729/iLBC22. AGC(Auto Gain Control)

9. G.168/165 compliant 16ms echo cancellation