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call drop

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  • #39826 Reply
    chill
    Guest

    hi,

    is call drop also correlated to sd drop? since in my case, my call drop are somehow increasing as well as my sd drop.

    thanks,
    chill

    #39827 Reply
    Tufail
    Guest

    Hi Chill,

    How is ur HSR in these cells.

    If it is bad check ur COBSIC, COBCCH Collision.

    it will decrease ur SDDROP and TCHDROP too.

    regards

    Tufail

    #39828 Reply
    tarun sharma
    Guest

    what is HSR,COBSIC, COBCCH Collision

    #39829 Reply
    chill
    Guest

    hi tufail,

    the HOSR of these site are quite ok, they passed the KPI threshold. thats why its hard for me to determine what paramets to modify…the only thing im sure is that, almost all of the drops based on the counters are caused by low signal strenght.

    thanks,

    #39830 Reply
    tarun sharma
    Guest

    what are protocols related to call flow.

    #39831 Reply
    tarun sharma
    Guest

    in u.s.a gsm is used or not?what we use over there?

    #39832 Reply
    pix
    Guest
    #39833 Reply
    tarun sharma
    Guest

    how to decide SDCCH & AGCCH blocks for the site ?

    #39834 Reply
    pix
    Guest

    tarun sharma,

    for SDCCH : check out your vendors recommentation : for a certain number of TRX in a cell, he will tell you how many SDCCH are necessary.
    Default usage, one SDCCH/8 will cater for 2 TRX.
    If you have a lot of SMS’s, you might need some extra SDCCH channels, or some dynamic SDCCH/TCH timeslots.

    For AGCH, you can choose one block minimum + dynamic allocation of AGCH blocks over Paging blocks.

    In both cases, it is always possible to check the QOS (congestion SDCCH ? congestion AGCH ?) in order to reconfigure the cell later on.

    Regards,

    #39835 Reply
    JACK
    Guest

    TELL ME SOME THING ABOUT ACCMIN & BSRXMIN VALUES IN GSM?

Viewing 10 posts - 16 through 25 (of 25 total)
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