Sip ringback function

Discussion in '3CX Phone System - General' started by brisingr, Mar 12, 2018.

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  1. brisingr

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    Hello,

    I am appreciate if there is any one who can help me.

    Recently I was testing our 3CX system and found out that when we call external number wineshark will see a 180 ringtone to original caller the phone will start to ring.
    If the external number is busying calling the phone will not hear a ringback announcement. The phone will keep ringing.
    I build up a same system same hyper-v, subnet then only add SIP trunk than test with one of our ip phone. Winshark will see a 183 secession if the number is busy than the original caller will hear a announcement a few second.

    Could somebody tell if there are any setting could change?
     
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