SIP: Basics and Beyond

ABSTRACT

More than just a simple telephony application protocol, SIP is a framework for developing communications systems.
Chances are you're already using SIP (Session Initiation Protocol). It is one of the key innovations driving the current evolution of communications systems. Its first major use has been signaling in Internet telephony. Large carriers have been using SIP inside their networks for interconnect and trunking across long distances for several years. If you've made a long-distance call, part of that call probably used SIP.

REFERENCES

• 1: J. Rosenberg , H. Schulzrinne , G. Camarillo , A. Johnston , J. Peterson , R. Sparks , M. Handley , E. Schooler, SIP: Session Initiation Protocol, RFC Editor, 2002
• 2: H. Schulzrinne , S. Casner , R. Frederick , V. Jacobson, RTP: A Transport Protocol for Real-Time Applications, RFC Editor, 2003
• 3: Handley, M., Jacobson, V., Perkins, C. 2006. SDP: Session Description Protocol, RFC 4566 (July).
• 4: J. Rosenberg , H. Schulzrinne, Session Initiation Protocol (SIP): Locating SIP Servers, RFC Editor, 2002
• 5: Peterson, J., Jennings, C. 2006. Enhancements for authenticated identity management in the Session Initiation Protocol (SIP), RFC 4474 (August).
• 6: Rosenberg, J. 2006. Obtaining and using Globally Routable User Agent (UA) URIs (GRUU) in the Session Initiation Protocol (SIP), draft-ietf-sip-gruu-11 (work in progress, October).
• 7: Rosenberg, J. 2004. A presence event package for the Session Initiation Protocol (SIP), RFC 3856 (August).
• 8: Campbell, B. 2006. The Message Session Relay Protocol, draft-ietf-simple-message-sessions-16 (work in progress, October).
• 9: Rosenberg, J. 2006. Simple traversal underneath network address translators (NAT) (STUN), draft-ietf-behave-rfc3489bis-05 (work in progress, October).
• 10: Rosenberg, J. 2006. Obtaining relay addresses from simple traversal underneath NAT (STUN), draft-ietf-behave-turn-02 (work in progress, October).
• 11: Rosenberg, J. 2006. Interactive Connectivity Establishment (ICE): A methodology for network address translator (NAT) traversal for offer/answer protocols, draft-ietf-mmusic-ice-12 (work in progress, October).
• 12: Sparks, R. 2006. Addressing an amplification vulnerability in Session Initiation Protocol (SIP) forking proxies, draft-ietf-sip-fork-loop-fix-04 (work in progress, October).

INDEX TERMS

Primary Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.2 Network Protocols

Additional Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.1 Network Architecture and Design
          Subjects: Network communications
      C.2.3 Network Operations
          Subjects: Public networks

  E. Data
  E.4 CODING AND INFORMATION THEORY
      Subjects: Formal models of communication