SIP API  

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    SIP Phone SDK

Create high quality SIP Phone web and stand alone applications with MessengerSDK SIP client API.

Soft Phone SDK Features

Telephony Features PC-PC or PC-phone calls Multiple lines for multiple concurrent calls Caller ID with name Call waiting Call hold Call forward Call transfer Conferencing with up to 8 users Multiple SIP registrations Click-to-call Call screening or blocking, or sending to voice mail Customized ring-tones Quick calling and re-dialing Call history (received, dialed and missed) Connect to PSTN and mobile phones (using SIP gateways & soft-switches) Touch-tones or DTMF for PBX calling and IVR systems Voicemail and Message Waiting Indicator (MWI) Auto-answer Audio Features Adaptive jitter buffer Packet loss concealment for voice and video Automatic Gain Control (AGC) for voice Voice Activity Detection (VAD) Acoustic Echo Cancellation (AEC) Narrow band and wide-band voice codec choice: G711A, G711U, iLBC, Speex, Speex-wb, GSM, G.729a, Siren

Advanced Call Features Intuitive VoIP and video telephony features. Users can record, play and send audio or video files. Choose from; large display, picture in picture, multiple lines, mute, pause, hold, call transfer, three-way calling, re-dial, call logs, call status, DTMF, speakerphone and the list goes on.