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T3101

  • This topic has 11 replies, 1 voice, and was last updated 8 years ago by pix.
Viewing 12 posts - 1 through 12 (of 12 total)
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  • #53551 Reply
    SM
    Guest

    Dear all,

    I would like to know the suitable value of T3101 in Alcatel and Ericsson.

    To optimize this timer will improve the SDCCH fail in our network?

    Thank you very much.

    #53552 Reply
    ali abbas
    Guest

    what is 3162 parameter.

    #53553 Reply
    SA
    Guest

    Hello SM.

    In the Ericsson networks, the T3101 can indeed improve the SDCCH Assignment Failure. If you monitor the counter CESTIMMASS from the dbo_CELL_MAIN or dbo_CELL_MAIN_PEAK tables from the GRAN_seg1 server you will see that at least a 5% of the CCALLS correspond to the expiration of the T3101. The default value for Ericsson is 1,5 seconds. We found an improvement by moving it to 3 seconds.

    Of course, ideally would be to have a Protocol Analyzer and measure the average time for the timer and see if the actual value is correct!

    I think in Alcatel-Lucent is easy to set a new value. However in Ericsson, even a small restart is needed on a BSC level.

    Regards,

    SA

    #53554 Reply
    optimiser
    Guest

    In alcatel, the default value is 3seconds I think.

    #53555 Reply
    fouad
    Guest

    note that the default value on alcatel is 3*0.1s=0.3s and not 3S

    #53556 Reply
    m@u
    Guest

    In Nortel is 3 seconds the default.

    #53557 Reply
    innova
    Guest

    Default value of T3101 in Alcatel can’t be that low 0.3s. Should be 3 sec.

    #53558 Reply
    Rex
    Guest

    Fouad,
    in Alcatel is 30*0.1s=3s

    #53559 Reply
    ACV
    Guest

    Which is the deafult value in Siemens and Nokia?

    #53560 Reply
    optima
    Guest

    Hi everybody.
    what is best value for T10 & T3101 timers in Nokia BSC?

    Thanks a lot

    #53561 Reply
    IMRAN
    Guest

    Have faced the issue of “Missing Immediate Assignment”, but there was no SD blocking blocking on cell + routing area has been updated without doing anything, not even changes the MS location. Could anyone share the reason or explain it?

    #53562 Reply
    pix
    Guest

    check co bcch/bsc, resurgences, interferences.

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