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111 protocol error, unspecified

Viewing 7 posts - 1 through 7 (of 7 total)
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  • 2nd July 2010 at 15:23 #63379
    poncho
    Guest

    Hi,
    I have an issue in TEMS with HO failures and the layer 3 message gives a cause such as Cause No. 111 “protocol error, unspecified”.
    What is the reason behind this error? In 3GPP specification documents, they only said that “This cause is used to report a protocol error event only when no other cause in the protocol error class applies.” I need more concrete clues. Any help?
    Thanks.

    2nd July 2010 at 19:52 #63380
    pix
    Guest

    hello poncho,

    it is the MS that sends the HO failure, if i remember correctly.
    how long after the HO COMMAND does it take for it to send it ? if it is immediate, something must be wrong in the ho command (wrong codec, or cipher, or something)

    second axis for investigation : what are the other possible causes ?

    regards
    pix

    7th July 2010 at 09:23 #63381
    Ubaid
    Guest

    In my experience normally these HO failures are due to the non sychronization of BTS.
    Just check if the failures are between 2 bands (GSM -DCS) or two BSC or with common source BTS.

    In Alcatel resynchronizing the SUMA card usually helps

    27th November 2013 at 08:03 #63382
    rashed
    Guest

    Value : Tems message shows(111) Protocol error for HO failure,i want to known what is the reson for HO failure No ping pong Ho,RX LEV,RX QUAL is also good,no TRX problem

    28th November 2013 at 17:43 #63383
    Kasem
    Guest

    Hi,
    we had the same problem before with inter BSC Handover when the encryption different in two BSCs

    Thanks

    14th August 2015 at 10:33 #63384
    kathir
    Guest

    Skip indicator : 0
    Protocol discriminator : (6) Radio resources management messages
    Message type : 40
    Value : (111) Protocol error, unspecified

    14th August 2015 at 15:25 #63385
    Wallis Dudhnath
    Guest

    Related to the codes from ISDN.

    General purpose protocol code that captures errors that cannot be easily quantified.

    Indicates a protocol error not a violation.

    VBR/ Wallis Dudhnath

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