3CX and A1 Provider Austria

Discussion in '3CX Phone System - General' started by ThomasU, May 28, 2015.

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  1. ThomasU

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    Hello,
    I have an A1 over IP SIP line in the 3CX.
    Inbound calls are working,
    outgoing calls not.

    The Settings are:
    SIP Provider generic

    Sip-Server: a1.net
    Port: 5060
    Outgoing Proxy: centrex.a1.net
    Port: 5060

    External Nr: 0664xxxxxxx
    Auth ID MichaelMueller
    Password: xxxxx
    3 way: MichaelMueller@a1.net


    Does anyone have an idea on what it may be?
     
  2. complex1

    complex1 Active Member

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    Hi,

    Are you sure your provider support 3 way authentication?

    Are your outbound rules correct configured?

    Did you run the firewall checker?
     
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