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traffic

Viewing 4 posts - 1 through 4 (of 4 total)
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  • #42876 Reply
    diosdado
    Guest

    hi all,

    i want to know how many calls are there in a 60 channels given 1 erlang

    #42877 Reply
    Ebrahim
    Guest

    Technically, you can’t tell with the given information.

    it can be 1 call for one hour
    it can be 2 calls for 30 mins each
    it can be 60 calls for 1 min each


    etc

    The term erlang does not describe the “call volume”! Rather, it describes the total amount of hours of all the calls.

    hope i got your question correctly.

    Ebrahim

    #42878 Reply
    diosdado
    Guest

    hi ebrahim,

    thanks for the information. this question was asked to me during my interview with a wireless company here in US and I cannot answer the question because of a missing data which is the average call duration based on your reply.
    thanks again.

    #42879 Reply
    Ivan
    Guest

    For easy understanding:

    if you have 5 calls in 1 hour, with MHT (mean holding time) of 120 sec, it gives

    5*120/3600=0,16666666Erl traffic

    For proper dimensioning, some other erlang calculations must be done, with some other parameters, i.e. blocking probability etc.

    Of course, maximum traffic in Erlangs recommended is differet from trunk to trunk ( it depends for what type of signalization is used)

    BR

    Ivan

Viewing 4 posts - 1 through 4 (of 4 total)
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