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Reply To: GSM basics


According to the Erlang principle, we have:
It means that 1TRX = 3,5 Erlangs;

Those principles permit us to dimension the BSS equipement.

For exemple,
1PCM = 1Ater = 30CIC
1CIC = 0,88Er —> 1Ater = 22Er

If we want to add 22Er trafic, we must add 1Ater in the BSC, 30CIC at the MSC side, and 1 PCM must be available for carring.