Interworking Between SIP / SDP and H . 323

  title={Interworking Between SIP / SDP and H . 323},
  author={Kundan Singh and Henning Schulzrinne},
There are currently two standards for signaling and control of Internet telephone calls, namely ITU-T Recommendation H.323 and the IETF Session Initiation Protocol (SIP). We describe how a signaling gateway can allow SIP user agents to call H.323 terminals and vice versa. Our solution addresses user registration, call sequence mapping and session description. We also describe and compare various approaches for multi-party conferencing and call tranfer. Keywords— Internet telephony, Interworking… CONTINUE READING