Signaling Series

Series Highlights

Signaling System 7 (SS7) is an architecture for performing out-of-band signaling in support of the call-establishment, billing, routing, and information-exchange functions of the public switched telephone network (PSTN). SIGTRAN is the name, derived from signaling transport, of the former Internet Engineering Task Force (IETF) working group that produced specifications for a family of protocols that provide reliable Datagram service and user layer adaptations for Signaling System 7 (SS7) and ISDN communications. The SIGTRAN protocols are an extension of the SS7 protocol family. It supports the same application and call management paradigms as SS7 but uses an Internet Protocol (IP) transport called Stream Control Transmission Protocol (SCTP). The most significant protocol defined by the SIGTRAN group is SCTP, which is used to carry PSTN signaling over IP.

Course Contents

SS7 Fundamentals

  • Introduction to signaling
  • Overview of SS7
  • SS7 protocol stack
  • Message transfer part
  • Telephone user part
  • ISDN user part
  • Broadband ISDN user part
  • Signaling connection control part
  • Transaction capabilities application part
  • Mobile application part and GSM

SIGTRAN Fundamentals

  • Motivation and context
  • SIGTRAN concept
  • Stream control transmission protocol
  • SCTP behavior
  • MTP2 peer-to-peer adaption layer
  • MTP2 and MTP3 user adaption layers
  • SCCP user adaption