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SDCCH Failures too much

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  • #45429 Reply
    Manoj
    Guest

    We are getting lot of SDCCH failure under the Header
    SDCCH_ABIS_FAIL_CALL ./c1075 7.24 % 8.02 %

    What does this mean.The site doesn’t have much TCH drop rate

    #45430 Reply
    Tech Man
    Guest

    Manoj,

    First of all there is no relationship between SDCCH_ABIS_FAIL_CALL and TCH drop rate. This counter is encountered during SDCCH setup procedure.

    The Probable Causes for SDCCH_ABIS_FAIL_CALL are:

    1)Ghost Random accesses
    2)Mobile in Congestion area or the Mobile is in weak coverage area leading to double reservations: RACH repetition
    3)BCCH frequency-BSIC reuse
    4)bursts of random accesses (HO access)
    5)”channel activation not acknowledgement” message failure

    #45431 Reply
    treejar
    Guest

    hi Tech Man,
    think you for the causes of SDCCH_ABIS_FAIL_CALL but how resolve that problems
    1)Ghost Random accesses
    2)Mobile in Congestion area or the Mobile is in weak coverage area leading to double reservations: RACH repetition
    3)BCCH frequency-BSIC reuse
    4)bursts of random accesses (HO access)
    5)”channel activation not acknowledgement” message failure
    thank u
    treejar.

Viewing 3 posts - 1 through 3 (of 3 total)
Reply To: SDCCH Failures too much
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