Suitable for office envirement

SIP supports 3 SIP servers

Support Route and bridge mode

Support SIP 2.0 (RFC3261) and correlative RFCs

Codec: G.711A   /u, G.723.1 high/low, G.729a   /b???G.722???G.722.1???G.726

Echo cancellation: G.168 Compliance in LEC, additional acoustic echo cancellation(AEC) can reach 96ms max filter length in hands-free mode

Support Voice Gain Setting, VAD, CNG

SIP support SIP domain, SIP authentication(none basic, MD5), DNS name of server, Peer to Peer/ IP call