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What Is a Dial Pattern for the 3rd Party PBX

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If you have your own PBX and a CommPeak SIP account, you need to create a trunk with CommPeak using your CommPeak SIP account credentials in order to avoid connection issues. Please follow these recommendations:

  1. In your PBX, instead of sip.commpeak.com, select two of the following SIP proxy domains that are nearest to your location:

    useast.sip.commpeak.com
    uswest.sip.commpeak.com
    br.sip.commpeak.com
    au.sip.commpeak.com
    sg.sip.commpeak.com
    tw.sip.commpeak.com
    eu1.sip.commpeak.com
    eu2.sip.commpeak.com

  2. Configure each of the two selected trunks (e.g. eu1 and eu2) following this example:

    [commpeak-eu1]
    host=eu1.sip.commpeak.com
    type=peer
    qualify=yes
    disallow=all


    If you want to change the codec priority, place ulaw before g729:

    allow=g729
    allow=ulaw


    If username/password authentication was chosen:

    username=username
    secret=password
    context=commpeak

  3. On your extension, configure both trunks you created:

    exten => _X.,1,Dial(SIP/commpeak-eu1/${EXTEN})
    exten => _X.,n,Dial(SIP/commpeak-eu2/${EXTEN})

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