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suddenly fill all SDCCH reasorce

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  • #65661 Reply

    hi all.
    i encounter with strange problem.
    my vendor in BSC and BTS is nokia.
    one cell in my Nokia BSC use whole SDCCH reasorce with no reason.
    it have 23 SDCCH(3 SDCCH/8)That 2 of them place on BCCH TRX(with CBCH On one of them)and 1 ofe them is on NonBCCH TRX.
    my site is 2-2-2
    i visit site and dont have any HW problem,even i exchange BB2F with other sector,but problem not solved.
    i check very Parameter in cell,all of them set rational.
    Periodic LU is 4 hourse in whole nework.
    this site is not in LAC border.
    when i disable IMSI detach/Attach in this cell the problem doesnot solve yet,it means that SDCCH reasorces doesnot occupy with IMSI detach/Attach Process or LU.
    i have Congstion on SDCCH and SDCCH blocking in this cell and i have a few traffic in this cell.
    can any body guide me to solve problem without visit site again?!

    #65662 Reply

    i forget one thing.
    when cell has no SDCCH free i have DYN-SDCCH in use for one TCH in cell.

    #65663 Reply

    Hello jack,

    Try to lock on this cell (Using TEMS Pocket for example) and make test calls to see if any problem will be related.

    It seems that u have long SDCCH mean Holding time not related to equipment as you change BB2F.


    #65664 Reply
    Tom Byrom

    Hi Jack,
    i have the same problem in some bts. There are sdcch congestion in some moments.
    Do you got a answer?

Viewing 4 posts - 1 through 4 (of 4 total)
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