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Thread: A312Aa:Failed Assignments during MOC on the A Interface (Including Directed Retry)

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    Default A312Aa:Failed Assignments during MOC on the A Interface (Including Directed Retry)

    Dear Leaders
    Hope you are doing well.


    In our network we use following CSSR formula:

    CA310:Assignment Requests = [Assignment Requests (Signaling Channel) (TCH)] + [Assignment Requests (Signaling Channel) (SDCCH)] + [Assignment Requests (TCHF Only)] + [Assignment Requests (TCHH Only)] + [Assignment Requests (TCHF Preferred, Channel Type Unchangeable)] + [Assignment Requests (TCHH Preferred, Channel Type Unchangeable)] + [Assignment Requests (TCHF or TCHH, Channel Type Unchangeable)] + [Assignment Requests (TCHF Preferred, Channel Type Changeable)] + [Assignment Requests (TCHH Preferred, Channel Type Changeable)] + [Assignment Requests (TCHF or TCHH, Channel Type Changeable)]


    CA313:Successful Assignments = [Assignment Requests]-([Failed Assignments (Signaling Channel)]+[Failed Assignments during MOC on the A Interface (Including Directed Retry)]+[Failed Assignments during MTC on the A Interface (Including Directed Retry)]+[Failed Mode Modify Attempts (Emergency Call) (TCHF)]+[Failed Assignments during Call Re-establishment on the A Interface (Including Directed Retry)]+[Failed Mode Modify Attempts (MOC) (TCHF)]+[Failed Mode Modify Attempts (MTC) (TCHF)]+[Failed Mode Modify Attempts (Emergency Call) (TCHF)]+[Failed Mode Modify Attempts (Call Re-establishment) (TCHF)]+[Failed Mode Modify Attempts (MOC) (TCHH)]+[Failed Mode Modify Attempts (MTC) (TCHH)]+[Failed Mode Modify Attempts (Call Re-establishment) (TCHH)]

    We faced CSSR degradation in whole network due on following two counter:

    [Failed Assignments during MOC on the A Interface (Including Directed Retry)]: 66% fail
    [Failed Assignments during MTC on the A Interface (Including Directed Retry)]: 34% Fail


    I need your expert suggestions to mitigate these issues please.

    Please help on this regards


    BR//
    Miles

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