Call duration
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In telecommunications, the term call duration has the following meanings:
- In telephone systems, the time between (a) the instant a circuit, i.e., off-hook condition at each end, is established between the call originator and the call receiver and (b) the instant the call originator or the call receiver terminates the call.
- In data transmission, the duration of the information transfer phase of an information transfer transaction.
Source: from Federal Standard 1037C