What is SS7?
While the term SS7 is commonly used in the United States, it is not an accepted acronym around the world. Here are some facts about the nature, function, and applications of SS7 technology around the world, including the other names for the system. With a proper name of Signaling System #7, SS7 technology is a set of signaling protocols developed specifically for telephone communication protocols. Originally developed by AT&T in 1975, these protocols today provide the underpinning for public switched telephone networks around the world. The name used to identify the protocols varied from place to place. For instance, SS7 technology is known simply as C7 in the United Kingdom, CCSS7 in other parts of North America, and more recently as ITU-T in other parts of the world. SS7 was originally designed to replace earlier signaling technology that was beginning to experience more failures as the demand for voice communications continued to increase around the world. With the earlier versions
SS7, or Signaling System No. 7, is a series of telephone signaling protocols defined by the Telecommunication Standardization Sector (ITU-T) of the International Telecommunication Union (ITU). SS7 specifies the procedure and protocol used for signaling and control for a variety of network services and capabilities, used to set-up most of the world’s public switched telephone network. SS7 is often referred to as Common Channel Signaling System No. 7 (CSS7 or C7) in North America. Meanwhile, the same standard is referred to in the United Kingdom as C7 (CCITT number 7), number 7 and CCIS7.
Ans : Common Channel Signaling 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 signaling network to effect wireless (cellular) and wireline call setup, routing and control.
