Topic summary
Signaling System 7
Extracted from the Wikipedia article Signalling System No. 7.
In North America, SS7 is also often referred to as Common Channel Signaling System 7 (CCSS7) (or CCS7). In the United Kingdom, it is called C7 (CCITT number 7), number 7 and Common Channel Interoffice Signaling 7 (CCIS7). In Germany, it is often called Zentraler Zeichengabekanal Nummer 7 (ZZK-7).