Call-second

Call-second

In telecommunication, a call-second is a unit used to measure communications traffic density.

"Note 1:" A call-second is equivalent to 1 call with a duration of 1 second.

"Note 2:" One user making two 75-second calls is equivalent to two users each making one 75-second call. Each case produces 150 call-seconds of traffic.

"Note 3:" The acronym CCS (Centum Call Seconds) is often used to describe 100 call-seconds.

"Note 4:" 3600 call-seconds = 36 CCS = 1 call-hour.

"Note 5:" 3600 call-seconds per hour = 36 CCS per hour = 1 call-hour per hour = 1 erlang = 1 traffic unit.

ee also

*Federal Standard 1037C
*MIL-STD-188In a communication network, it is possible for one channel to carry numerous calls simultaneously by means of multiplexing. In theory, there are many ways in which a channel can carry a particular number of CCS.

One call-second is equivalent to one call occupying a channel for one second. Thus, 1 CCS = 100 call-seconds = 1/36 erlang.


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