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Outgoing Trunk to Outgoing Trunk Transfer NO DISCONNECT SUPERVISION

  • 1.  Outgoing Trunk to Outgoing Trunk Transfer NO DISCONNECT SUPERVISION

    Posted 04-15-2021 05:42 AM
    Hi,

    CM 7.1
    G450 Gateway
    MM710
    ISDN E1 Trunk.

    From Avaya 9608 H.323 phone, We are trying to call an external mobile number and once it answers, we press Transfer key on IP phone and call another mobile number and then press Complete, but call transfer failed. List trace shows  "denial event 1740: No Disconnect Supervision"

    When I turn on Disconnect Supervision on Trunk group, call transfer is successful.
    " Disconnect Supervision - In? y Out? y "

    But when I enable Disconnect Supervision, I get following " WARNING: Setting this field to "y" may result in trunk lock-ups"
    Please suggest me how to fix this problem without breaking the existing trunk services.


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    Arslan Ali
    UC Consultant
    Vodafone
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  • 2.  RE: Outgoing Trunk to Outgoing Trunk Transfer NO DISCONNECT SUPERVISION

    Posted 04-15-2021 09:11 AM
    I am wondering if it might have to do with the COS of the phone trying to do the transfer. Does their COS have the "Trk-to-Trk Transfer Override" option set to "Y."

    ------------------------------
    [Bill] [Wilhelm]
    [Unified Communications Engineer]
    [John Carroll University]
    [University Hts.] [Ohio]
    [none]
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