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BTS and TC unsync in Nokia BSC 3i

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Viewing 8 posts - 16 through 23 (of 23 total)
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  • #41724
    afshin souzani
    Guest

    hi all,
    pls send me all information aboute alarm box for nokia indoor bts.

    br

    #41725
    ankush kaushal
    Guest

    After commissioning hop, frequency is stored in IDU or ODU?

    #41726
    2993 Solution
    Guest

    Major cause for 2993 is Abis Mismatch.
    It can be resolved after exact matching of Traffic TSL on BTS according to created in BSc.

    Khalid

    #41727
    yogender
    Guest

    2993 alarm came blz you have mismatching of bts manager.

    #41728
    Saransh
    Guest

    2993 alarm

    if the site has its BSC running on S13 and the site is flexi.. go to its TNMS.. flexi BTS manager… switch on the auto ABIS feature n restart the BTS (ZEFR)…
    PROBLEM SOLVED..!

    #41729
    Ankit
    Guest

    BGV05 MCMU-0 TRANSM 2012-09-12 07:39:23.15
    ** ALARM …….. RRM_BX
    (7902) 2993 BTS AND TC UNSYNCHRONIZATION CLEAR CALLS ON ABIS INTERFACE
    35d 7d 03 166d 10d 7d

    Here’s the information from Nokia on this alarm. My comments are in RED

    2993 BTS AND TC UNSYNCHRONIZATION CLEAR CALLS ON ABIS INTERFACE
    Meaning
    Calls have been cleared three successive times on the same Abis interface
    channel due to BTS and transcoder unsynchronisation.
    Meaning: The TCH in the traffic manager does not match the TCH built in the BSC which is causing calls to drop when a call is placed on that TRX.

    Supplementary information fields
    1 identifier of the base station This is the BTS number. In the alarm above, it’s 35d

    2 identifier of the TRX In the alarm above, it’s the first 7d from left to right

    3 identifier of the radio time slot In the alarm above, it’s 03

    4 number of external PCM circuit In the alarm above, it’s 166d

    5 time slot of external PCM circuit In the alarm above, it’s 10d

    6 sub-time-slot of external PCM circuit In the alarm above, it’s the LAST 7d from left to right

    When you compare this to the ZEEI output of the site you’re looking at, you can check these values to see if they are on your site.

    BSC3i BGV05 2012-09-21 09:44:26
    RADIO NETWORK CONFIGURATION IN BSC:
    E P B
    F T R C D-CHANNEL BUSY
    AD OP R ET- BCCH/CBCH/ R E S O&M LINK HR FR
    LAC CI HOP ST STATE FREQ T PCM ERACH X F U NAME ST /GP
    ===================== == ====== ==== == ==== =========== = = == ===== == === ===

    BCF-0034 ULTRASITE U WO 3 BC034 WO
    08015 41861 BTS-0034 U WO 1 0
    177P0186A RF/- 4
    EDGE TRX-001 U WO 683 0 42 MBCCH+CBCH P 1
    EDGE TRX-002 U WO 562 0 42 5
    08015 41862 BTS-0035 U WO 0 0
    177P0186B RF/- 1
    EDGE TRX-005 U WO 673 0 42 MBCCH+CBCH P 0
    EDGE TRX-006 U WO 570 0 42 1
    EDGE TRX-007 U WO 576 0 166 3
    08015 41863 BTS-0036 U WO 0 0
    177P0186C RF/- 3
    EDGE TRX-009 U WO 677 0 42 MBCCH+CBCH P 5
    EDGE TRX-010 U WO 566 0 42 0

    #41730
    S K SAURABH
    Guest

    If 2993 alarm comes in BSC for particular BTS. At first check site running on cascading E1 or not, if yes plz clear cascading path (delete e1 route) of other site.

    #99061
    Robert Penry Wilding
    Guest

    HeLLo @LL Noki@ TRUE DSP hardware slide in module <PCS 1900 TRUE Hardware/software interface> and PCS 1900 Backplane 🙂 Thisis RoB Wilding BACK :-)(-….Nokia Hybrid SMART Antenna (HSA) and PCS 1900 Nokia Testbed, Camberley.

    Tapio Saari (Nokia Finland was actually working on this PCM DSP hardware/software interface. He was working in the Nokia systems team with me Nokia 1995 to 1997. Tapio was responsible for software configuration management and upgrade of Nokia PCS 1900 TRUE DSP slide in module including PCB hardware tight clearance backplane fit, DSP card grounding between BSS ground plane, TRUE DSP card fault finding and diagnostic tests and PCB fault finding and solder joint inspection,

    I was working along side Tapio ensuring that this DSP card was properly grounded to the base station and ensuring that the TRUE DSP module boots up properly and in the correct sequence and ensuring that sufficient time was elapsed before no RED ERROR LED was displayed and after 20 – 30 minutes the performance of the TRUE DSP PCM ABIS interface was stable, and a constant GREEN LED was displayed…!!!

    KinD ReG@rd<e>

    RoB WilDinG B Eng(Hons.) MSc. MIOEE

Viewing 8 posts - 16 through 23 (of 23 total)
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