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ISP Traffic

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  • #33293 Reply

    I’m studding ISP insfraestructure, I supouse that all ISP have to calcute the user: modem ratio, and the lines for the PSTN. I’ve only one question:

    How can I calculate those lines? In example, I have 2000 users and 10:1 ratio, how many lines I need for the PSTN? Can I give 5kbps (bandwidth) to each one?


    #33294 Reply
    Alexandra Fruto

    I´m a teacher from traffic engineer and I want to have the answer to this question.
    Thank You.

    #33295 Reply
    Maine PE

    Assuming you’re not going to employ any voice multiplexing between the ISP and PSTN, it seems to me you’ll want one PSTN line for each modem.

    #33296 Reply

    What I have gather :
    U have 2000 users.
    U want to designyour RAS on 10:1 ratio.
    It means u r designing ur network on .1 erl traffic.

    u need there fore 200 lines so that it can satisfy the traffic of .1 erl to ur user.

    Ur ISP banwidth has nothing to do, with PSTN lines.

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