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Connections per circuit hour

In telecommunication, the term connections per circuit hour (CCH) has the following meanings:

1. A unit of traffic measurement expressed as the number of connections established at a switching point per hour.

2. A unit of traffic measurement used to express the rate at which circuits are established at a switch.

Note: The magnitude of the CCH is an instantaneous value subject to change as a function of time, i.e., from moment to moment.

Source: from Federal Standard 1037C and from MIL-STD-188

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