Communications SDK

 Voice, presence, and instant messaging SDK leveraging standard protocols for systems such as Microsoft Windows, Apple MacOS X, and Linux.

 The main protocols implemented are:

  • Session Initiation Protocol (SIP) from RFC 3261
  • SDP
  • RTP, including Secure RTP
  • RTCP, including Secure RTCP

We provide straightforward alternative licensing for our open source SIP library project PJSIP.  Contact us to discuss your specific requirements.