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RRC connection Failure

  • This topic has 31 replies, 1 voice, and was last updated 7 years ago by LEMAURE.
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  • 6th November 2017 at 08:56 #53272
    MUSTAPHA EL AHMADI
    Guest

    Hi,
    Thanks a lot for your answer.
    I have another question in the same subject:
    Can the CSFB be an issue for MTC Call Attempt failure and paging ,when the UE came back to 3G?paging sent when he was in 3G par exemple?because from the drive tests before a paging,the previous message was CSFB.
    Thanks for your support
    Cheers

    10th December 2017 at 23:10 #53273
    LEMAURE
    Guest

    durng csfb the paging is sent on 4G and the UE responds rhrough an RRCconnReq with the cause extended service
    the paging response occurs through the 3G network after the release (blind or assisted). at the end of the call if there is “fast return to 4G” feature activated, the UE immediately return of 4G otherwise, LAC update occurs on 3G network

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