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Reply To: Grade of Service


Assume 0.05 Erlang per PSTN subscriber.
3000 Subscribers generate 150 Erlang requiring at least 6 E1 Trunks(180 channels of 64 kbps)required for non-blocking on circuit-switching

If the traffic is transported over IP, what shall be the bandwith required in KBPS ??

Is there any formula please?? Thanks.