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If 300 subscribers generate a 20 Erlang of traffic load during the busy hour with an average call duration of 1 minute 30 seconds.

If 300 subscribers generate a 20 Erlang of traffic load during the busy hour with an average call duration of 1 minute 30 seconds. What is the busy hour calling rate of each subscriber? If these subscribers lost 3 calls in the busy hour, what is the Grade of Service (GOS)? 15 minutes -

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