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SS7 Channel Signalling

SS7 also known as Common Channel Signalling System No. 7 (i.e., 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 signalling 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 Research (Telcordia Technologies) standards used in North America and the European Telecommunications Standards Institute (ETSI) standard used in Europe.

The SS7 network and protocol are used for: basic call setup, management, and tear down wireless services such as personal communications services (PCS), wireless roaming, and mobile subscriber authentication local number portability (LNP) toll-free (800/888) and toll (900) wireline services enhanced call features such as call forwarding, calling party name/number display, three-way calling efficient and secure worldwide telecommunications.

POSTcti offer leading SS7 products ranging from Dialogic, Aculab and Audiocodes

For more information please contact sales@postcti.com or call the sales team on 0870 126 6633 for further information