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T3126

  • This topic has 24 replies, 1 voice, and was last updated 15 years ago by Pd.
Viewing 10 posts - 16 through 25 (of 25 total)
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  • 2nd March 2008 at 17:56 #46202
    VIVEK
    Guest

    Hhmaan
    the unit for every timer is in milliseconds.

    2nd March 2008 at 18:17 #46203
    paraHO
    Guest

    “the unit for every timer is in milliseconds.”

    Vivek where did you get that from?

    Is that vendor specific?

    GSM0408 (ETS300557) and 3GPP TS0408 both have T3126 stated in seconds

    3rd March 2008 at 19:22 #46204
    Ater
    Guest

    If you are in a GPRS session. What would be the reasons for the “T3126expired” indication? ( if there are.. )

    3rd March 2008 at 20:26 #46205
    Pix
    Guest

    Ater,

    ParaHO just gave the full definition below !!

    5th March 2008 at 13:34 #46206
    Ater
    Guest

    Thanks PIX, Im familiar with the definition but sometimes in the field you see things that arent in the books.

    5th March 2008 at 13:50 #46207
    Pix
    Guest

    Oh, i’m sorry, you meant the “root cause” of the expiration.

    well, mostly it will be due to SDCCH congestion or poor radio link (interference / coverage / path balance)

    this timer is internal to the MS, so you’ll probably never be able to “see” the expiry of the timer.

    22nd July 2008 at 21:17 #46208
    Ronnie
    Guest

    In the event of having call setup fails my traffic report show no SDCCH congestion. I have dynamic SDCCh activated on all cell but yet i am getting call setup fail. Does anyone know what may be cause this problem? i work with Ericcson Equipment.

    23rd July 2008 at 07:01 #46209
    pix
    Guest

    ronnie,

    congestion is not the only cause of call setup. it can be due to faulty hardware equipment, or more probably to radio problems (poor coverage, strong interferences)

    keep in mind that a MS in call setup will jump from BCCH to SDCCH to TCH. So the MS is experiencing a lot of different frequencies, different timeslots, different TRX’s. If one of them is faulty or interfered, the call setup will fail.

    Regards,
    Pix

    7th August 2008 at 20:25 #46210
    Alexa
    Guest

    Hi, Ronnie.

    We have the same problem High call setup failure with Ericsson equipment due to T3126. We deactivated dynamic SDDCH Allocation and redefined them in channel group 0. But, we don´t know why this situation happend. We don´t have interference, and the signal level c/i is really good, we are waiting for Ericsson´s response.

    7th April 2009 at 00:50 #46211
    Pd
    Guest

    Hi Alexa,

    You have a query regarding high call setup failure with Ericsson equipment due to expiry of T3126 on 7th Aug’2008. Have you find any solution?

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