SIP application: Support Call forward/ transfer/ holding/ waiting / 3 way talking
Call control features: Flexible dial map, Hotline, Empty calling reject, Black list for reject authenticated call, limit call, No disturb, Caller ID
Support Phonebook 500 records
Incoming calls / Outgoing calls / Missing calls. Each support 100 records
Support conference and voice record on SIP server
Support 10 kind of ring type and 1 user ring
Support IAX2
Support MWI
Support SMS
Support Speed Dial
Support Memo
Multilanguage realizes localization

Basic Features
Support SIP 2.0 (RFC3261) and correlative RFCs
Codec: G. 711 A/U Law, G. 723.1, G. 729a/b, G. 722, G. 722.1, G. 726
Echo cancellation: Support G. 168, and Hands-free can support 96ms, Hand free Speaker Phone
Support Voice Gain Setting, VAD, CNG
Full duplex hands-free speakerphone
NAT transverse: Support STUN client
SIP support SIP domain, SIP authentication (none, basic, MD5), DNS name of server, Peer to Peer/ IP call
SIP support 2 SIP lines. Can connect to SIP1 and SIP2 server at the same time
DTMF: Support SIP info, DTMF Relay, RFC2833