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common channel signaling (CCS)

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common channel signaling (CCS)

Common channel signaling (CCS) is signaling (for example, in a T-carrier system line) in which a group of voice-and-data channels share a separate channel that is used only for control signals. This arrangement is an alternative to channel associated signaling (CAS), in which control signals, such as those for synchronizing and bounding frames, are carried in the same channels as voice and data signals.

Related glossary terms: virtual area network (VAN), 10-high-day busy period (10HD busy period), graceful degradation, online, softswitch, maximum transmission unit (MTU), traffic shaping (packet shaping), Dialed Number Identification Service (DNIS), WATS (wide-area telephone service), mail user agent (MUA)

This was last updated in June 2006

Posted by: Margaret Rouse

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