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tandem connection monitoring (TCM)

Tandem ConnectionMonitoring (TCM) is a technique for monitoring carrier sections in SDH networks.

Since an SDH network is often managed by different network operators, the quality of the individual sections must be monitored. This is done in the path overhead (POH) of the synchronous transmission mode (STM). The binding data set for monitoring, the N byte in the path overhead, has a length of 1 byte, of which the first four bits are used for the parity check on the section.

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Englisch: tandem connection monitoring - TCM
Updated at: 12.11.2020
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