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RACH Error

Viewing 15 posts - 1 through 15 (of 21 total)
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  • #52767 Reply
    NSNR
    Guest

    While i was doing city drive of a town in my cluster i find lots of RACH error. Can any body tell me it is the reason behind it……… One more thing i would like to know i somebody write above that RACH Failur could be because of CO-TCH/BSIC case….does it happen only in the case of base band hopping or it will impact in the Synth hopping…….. Pls Reply.
    BR//

    #52768 Reply
    pix
    Guest

    what is “RACH error” exactly ?

    the RACH is on the BCCH timeslot, and don’t forget that this timeslot will NEVER hop, whatever your hopping type on other timeslots (bbh or sfh)

    #52769 Reply
    NSNR
    Guest

    But i was saying if we find CO-BCCH and BSIC then could this happen.

    #52770 Reply
    pix
    Guest

    what would happen ? rach error ? but i still don’t know what it is.. you need to enlight me ๐Ÿ™‚

    #52771 Reply
    ako
    Guest

    are you using TEMS? I also got this error message during drive test and it is not only in 2G but 3G as well. It happened during call setup. I still have no explanation on this error, as there are no blocked calls when it occured. I suspect that it is site related since it is confined to a site and clears as we moved on to another site, but don’t take it as it is since we are still investigating it.

    #52772 Reply
    Ahmed Sabry
    Guest

    RACH error is not DL message, Its due to TEMS timer not entered correctly – Don’t look at it! Its fake message

    #52773 Reply
    AliAsgher
    Guest

    Ahmed is correct. RACH Error is just a TEMS terminology used in case of initiating Command Sequence.

    A RACH error is triggered because no RRC Connection Request was sent after initiation of a voice call by a command sequence.

    #52774 Reply
    Pratap
    Guest

    Boss i ahve also experienced this once with tems kit and found that the Ater media was down from respective BSC to MSC.
    Pls check and confirm whether this was the problem at the time of RACH error.
    Its an UL channel and goes with BCCH i.e ur signalling channel should keep working(on air) in order to make this channel(request) to reach respective VLR.
    If anything doesn’t work in between MS and VLR ,then this error can come even if BCSU,MCMU cards of respective BSC are over thresholds and also in very worst radio condition which is usually called Ghost error.

    #52775 Reply
    AliAsgher
    Guest

    Dear Pratap,

    From MS point of view, if anything was wrong between MSC/BSC or anywhere it will not matter. The MS will try MAXRET times to access the channel and request for signalling channel. If failed it will give you a “Blocked Call” message.

    RACH Error’s description is what I have stated earlier. It is just a TEMS terminology.

    Regards,

    #52776 Reply
    Ezc
    Guest

    Hi, I would like to talk with somebody about TEMS. I work with Data Collection, but I would like to learn more. Thanks!!!

    P.D: I don`t speak english, just a little. I`m from Venezuela and is really difficult find people who knows about TEMS in my country!

    #52777 Reply
    Pix
    Guest

    Welcome here !
    Don’t worry about english… with you, we will talk the TEMSglish. ๐Ÿ™‚

    #52778 Reply
    Ezc
    Guest

    Hi Pix!!! Thanks!!! Do you work with Data Collection???

    #52779 Reply
    Pix
    Guest

    Hi,

    I used to do drivetests, a long time ago ๐Ÿ™‚ Is that what you call data collection ?

    #52780 Reply
    Ers
    Guest

    Hi Ezc…
    Hi Pix…

    Im so interested to discuss about TEMS (especially in TEMSglish lang)..

    What version of TEMS you use ?? TEMS 7, 8 or 9??

    #52781 Reply
    AliAsgher
    Guest

    Dear Ers,

    I have used TEMS 8.0.3 and TEMS 8.1 too.

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