Common Channel Signaling System No. 7 (aka SS7 or C7) is a global standard for telecommunications defined by the International Telecommunication Union (ITU) Telecommunication Standardization Sector (ITU-T). The standard defines the procedures and protocol by which network elements in the public switched telephone network PSTN exchange information over a digital signaling network to effect wireless (cellular) and wireline call setup, routing and control. The ITU definition of SS7 allows for national variants such as the American National Standards Institute (ANSI) and Bell Communications (Telcordia Technologies) standards used in North America and the European Telecommunications Standards Institute (ETSI) standard used in Europe.
Reference pages
- How does SS7 to SIP work article by Terratel
- SS7 over IP
- What is SS7 or C7? by Squire Technologies
- SS7 Tutorials and Resources by Telecom Space
- Converged Communications Intel Technology Journal
- SS7 Training Courses by Lee Dryburgh
SS7 Forums
- SS7 and SIGTRAN Signalling Forum hosted by Dialogic
- hosted by Digium
- hosted by Telecom Space
SS7 Wiki Pages
- Asterisk SS7
- SS7 Point Code
- ISUP
- SCCP
- SCTP SCTP is created to tunnel SS7 ISUP over IP networks
- OpenSER OpenSER had SCTP support from August 2007
- SIGTRAN
- SS7 JIP SS7 JIP code (Jurisdiction Information Parameter)
- YATE – supports SS7, STP, MAP, TCAP, CAMEL
Hosted SS7 solution
Hardware Vendor News
- SS7 Protocol Converters and Gateways – Interconnect SS7 networks with non-SS7 equipment
- SS7/PRI/CAS to SIP Gateway SS7/PRI/CAS to SIP Signaling & Media Gateway Systems from Teleprime Advanced Communications Division
- SIGTRAN Gateway SS7/PRI/CAS to SIGTRAN Signaling & Media Gateway Systems from Teleprime Advanced Communications Division
- TERRATEL SIP/E1 Gateways for integration TDM to VoIP (SIP, SS7, DSS1, V5.2, R2D, CAS)
- Doretel Cisco PGW-2200 SS7 solution
- Cosmact Cosmos SS7 to SIP Gateway
April 7, 2023
Phone System 