O'Reilly logo

Signaling System No. 7 (SS7/C7): Protocol, Architecture, and Services by Jeff Hewett, Lee Dryburgh

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 9. Signaling Connection Control Part (SCCP)

The Signaling Connection Control Part (SCCP) is defined in ITU-T Recommendations Q.711-Q.716 [5863] and for North American markets in ANSI T1.112 [2]. SCCP sits on top of Message Transfer Part 3 (MTP3) in the SS7 protocol stack. The SCCP provides additional network layer functions to provide transfer of noncircuit-related (NCR) signaling information, application management procedures and alternative and more flexible methods of routing.

NOTE

Technically, SCCP can also transfer circuit-related signaling information; however, this is an exception.

As shown in Figure 9-1, the combination of the MTP, and the SCCP is termed the Network Service Part (NSP). The NSP follows the principles of the OSI reference ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required