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GPRS/EDGE Disconnections

Viewing 6 posts - 1 through 6 (of 6 total)
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  • 14th May 2006 at 22:50 #44994
    Ebrahim
    Guest

    Hi All,

    I’m facing a problem with data connections. in some area it is working perfectly and in other area it is not.

    The symptoms are the following:
    – you can access any site normally for the first time.
    – after a while, you can’t access anything while the connection still open.
    – after another while, you will get disconnected from GPRS/EDGE.

    Anybody have any idea of where the problem could be?

    Thanks.

    15th May 2006 at 20:42 #44995
    Pix
    Guest

    Same problem happens to me sometimes, but I feel like it is due to the phone/modem itself. I’m still not sure about it though.

    Which hardware are you using ? Are you using a drive-test tool for GPRS/EDGE ? Tems, Agilent, …?
    Any Air interface message before disconnection ?

    Let me know how it goes…
    Good luck 🙂

    16th May 2006 at 13:24 #44996
    Pavel
    Guest

    I faced with this problem also.
    Due to my mind – it is a problem between MT(phone) and SGSN. Sometimes, MT still in connected state, but GSN already finished this session by timeout. After reconnection – all is working again.
    Unfortunately, I can not give any usefull advise – try to make traces in Gb-if.

    17th May 2006 at 01:49 #44997
    Pix
    Guest

    Pavel,

    That’s interesting. So it could be a timer issue ? That oughts to be checked. Thanks for the tip.

    18th May 2006 at 07:20 #44998
    Ebrahim
    Guest

    Hi All,

    i made a Gb trace and found that the SGSN is initiating the PDP Deactivate Request. Before this, the mobile card was sending errored data.

    i upgraded the firmware and it is fine now.

    18th May 2006 at 20:21 #44999
    Pix
    Guest

    You mean, the firmware of the phone ?

    Thanks for letting us know the result 😉

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Viewing 6 posts - 1 through 6 (of 6 total)
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