Channel-Associated Signaling (CAS)

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

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