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111 protocol error, unspecified

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  • #63379 Reply
    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.

    #63380 Reply
    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

    #63381 Reply
    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

    #63382 Reply
    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

    #63383 Reply
    Kasem
    Guest

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

    Thanks

    #63384 Reply
    kathir
    Guest

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

    #63385 Reply
    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

Viewing 7 posts - 1 through 7 (of 7 total)
Reply To: 111 protocol error, unspecified
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