External SIP Extension Rings on direct Sip calls but hangs up immediately when picked up

Discussion in '3CX Phone System - General' started by Thomas6, Sep 19, 2017.

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  1. Thomas6

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    External SIP Extension Rings on direct Sip calls but hangs up immediately when picked up

    My Infrastructure:

    3CX PBX Edition 15.5.5 installed from debian-8.6.0-amd64-netinst-3cx.iso
    with all Updates

    3CX Softphone on iOS

    ---------------------------------------------------------------------------------
    DNS Server is on the same System

    Im not sure if my dns configuration is correct.

    this is the entry in the dnszone file.
    _______________________________________________
    ; BIND reverse data file for empty rfc1918 zone
    ; DO NOT EDIT THIS FILE - it is used for multiple zones.
    ; Instead, copy it, edit named.conf, and use that copy.
    ;
    $TTL 86400

    @ IN SOA debian.local. root.localhost. (
    1 ; Serial
    604800 ; Refresh
    86400 ; Retry
    2419200 ; Expire
    86400 ) ; Negative Cache TTL
    ;
    IN A 10.0.1.253
    @ IN NS localhost.
    sip.debian.local IN A 10.0.1.253
    _sip._udp.debian.local. IN SRV 20 1 5060 sip.debian.local.

    __________________________________________________________


    the respons from nslookup is:
    ____________________________________
    nslookup -q=SRV _sip._udp.debian.local
    Server: 127.0.0.1
    Address: 127.0.0.1#53

    _sip._udp.debian.local service = 20 1 5060 sip.debian.local.
    _________________________________________________

    The sip settings in the 3cx system allows in and out

    Networksettings SIP 3cx System.png


    I get alway the following error message: (Register/ Unregister)

    Register:Unregister.png

    Does anyone knows how to solve this problem.

    Best Regards Thomas
     
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