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C5 signalling (CCIT5)

For signalling, a distinction is made between innerband signalling and outerband signalling

. C5 is a switching standard for innerband signalling in which the switching control signals are transmitted over the same lines as the voice information or data

. The C5 control signals are transmitted as tones or tone sequences in the two-tone or multi-tone process.

This switching standard is used in the telephone network in Canada, the USA, Australia and China, among other countries.

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Englisch: C5 signalling - CCIT5
Updated at: 07.11.2020
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