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SD Drop Rate on A interface!!!

  • This topic has 2 replies, 1 voice, and was last updated 11 years ago by Mahmoud.
Viewing 3 posts - 1 through 3 (of 3 total)
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  • #67523
    Mahmoud
    Guest

    Dears,

    We have trace availability on A interface, but no possibility to check Abis.

    Is there any formula to get SD drop rate from A interface (Not Abis)?

    I have analyzed the caes for all CM_REQ which didn’t reached ASSIGNMENT_CMP. Is it accurate enough?

    Please comments.

    Cheers,
    Mahmoud

    #67524
    pix
    Guest

    hi mahmoud,

    I would consider taking the msg just before the assg complete ( = assign request ?), which is the last one that’s actually sent on A interface *during* the sd phase.
    the assg complete indicates that the MS did land on the TCH successfully.
    From the Assign request to the assign complete, the possible problem is a TCH assign failure, which is (usually) due to radio problems on the TCH frequency (which may be different than the SDCCH frequency).

    Regards
    pix

    #67525
    Mahmoud
    Guest

    Hi Pix,

    Thanks for your comment.
    So is there any other way to find SD possible issue via A interface?

    Br,
    Mahmoud

Viewing 3 posts - 1 through 3 (of 3 total)
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