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SCR more Improvement

Viewing 6 posts - 1 through 6 (of 6 total)
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  • #65852
    Shekhar Rawal

    Hi All,
    good morning,

    Please share Root causes to check to improve SCR of Huawei(R4-MSOFTX3000) system. Presently it is 99.18 of GSM GMSC as compare to other MSCs having 99.98 in the same Network. Problem facing in case of GMSC.

    Anyone can share the troubleshooting Points on forum or my personal mail id mentioned.


    Hi Shekhar
    Analyze the clear codes.Seems some clear codes on signalling is higher



    Hi Bijoy

    yes i hv checked getting errors in 1 hr:

    CAUSE166_network error (Count=7535)
    CAUSE169_temporary error(Count=532)

    Shekhar Rawal : +91-9351055533

    Hi All,

    This is for Sharing Purpose :

    In our Network We have improved SCR by good Percentage(98.81 to 99.50 in one Node having less SCR).

    RCA : Huge Error Count : 166_Network Error & 169_Temporary Error are decreased by following Action Plans :

    Major Improvement happened by Changing Some Timer at IN end ,Analysis done on the basis of Traces Captured.

    Rest Things done for Improvement are :

    ->All SLC TS are blocked to get rid off from un-necessary attempts/Context losses
    ->Reset on TDM CIC / BICC CICs done.
    ->Reset of SS7 Links/M3UA Links.
    ->Some Hardware Change overs on which major Count of Call Loss observed.
    ->IPBCP Timer (b/w MSS & MGW) Value increased for all ADD REQ/ADD REPLY.
    ->Level routing & Tone Audit done based discrepancies removed (Also will improve ASR).

    Also you have to check these Errors responsible for SCR Calculation :

    •CAUSE016 – temporary failure
    •CAUSE027-Switch equipment failure
    •CAUSE061 – no CR resource
    •CAUSE062 – no CCB resource
    •CAUSE166 – network error
    •CAUSE169 – temporary error
    •CAUSE170 – device congestion
    •CAUSE201 – IWF resource unavailable


    Thanks for knowledge sharing.
    I wud like to Know one basic thing.

    What are the TGs you are capturing to calculate SCR.If only BSC TGs are selected then it automatically goes high.

    Amol Pansare

    Hi Shekhar,

    I have MSOFT-R7 and total 39% network error and 14% no route available count in network. pls give me ur no so that i can call u for more details if u dnt mind

Viewing 6 posts - 1 through 6 (of 6 total)
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