Phone Functions:

1. SIP（RFC2543，RFC3261）supported
2. Display and store 64 groups of incoming calls
3. Display and store 64 groups of outgoing calls
4. Support 140 groups of phone number storage
5. Hand-free dialing function, timing automatically and displays while dialing
6. Review delete and redial incoming or outgoing calls
7. Block function
8. Roaming function(Phone number bound with phone device)
9. Check local number
10. Pre-dial function;
11. Display date and time;
12. Hold on music;
13. Support PPPoE;
14. Dynamic and static IP address settings;
15. Support voice codec format: G.711A/U，G.723.1，G.729A/B，G.726, self-adapted,
VAD/CNG for saving bandwidth.
16. User authentication;
17. TCP/IP(ARP/RARP、IP/ICMP 、UDP/TCP/IP 、RTP/RTCP)；
18. TFTP and Console function;
19. IEEE 802.1P/802.1Q/ToS u 10 Base T/100Base TX；
20. Support DNS protocol;
21. Calls transfer function;
22. Three-way conversation;
23. Call waiting function;
24. Call forward function;
25. DDNS function;
26. Remote software update;
27. Hand-free

Phone parameters:

1. AC/DC adaptor --------Input: AC 240/100V; Output: DC 9V, 1000mA;
2. Support DHCP client and static IP address
3. Support PPPOE(for ADSL, Cable Modem)
4. Upgradeable software
5. Support voice code format: G.711A/U，G.723.1，G.729A/B，G.726，VAD/CNG
6. Voice activity detection, Comfortable noise generation, Adaptive jitter buffer
7. G.165 16ms echo cancellation
8. Signaling tone of ITU-T standard, DTMF
9. Support dialing standard base on E.164 code