VOICE OVER IP

●SIP (RFC 3261)COMPLIANT

●G711a/u,G.729a/b Voice Codec

●Dynamic Jitter Buffer

●AVD, AEC, CNG

●In-band DTMF, Out-of-band /DTMF (INFO,RFC2833)

●Support QoS

Call Features

●Call transfer, Call Waiting,

●Call Hold, Call Forward, CID ect.

Phone Feature

●64-chords Polyphonic MIDI Ring Tone,MP3 Ring Tone and Playback

●Sound / Vibration / Sound& Vibration

●Call History(Inbound / Outbound / Missed)

●Phone Book (500 records)

●SPEED Dial (100 records)