Dial Pattern for 3rd-Party PBXs

If you have your own PBX and a CommPeak SIP account, you need to create a SIP Trunk with CommPeak. Use your CommPeak SIP account credentials in order to avoid connection issues. You can find the domain information in the VoIP section your CommPeak Portal account.

Configuring Your PBX Trunks

Please follow these recommendations:

1. In your PBX, select two of the SIP proxy domains from your CommPeak Portal. Go to VoIP Services > SIP Accounts > Server Status. Choose the domains nearest to your location instead of sip.commpeak.com.

2. Configure each of the two selected trunks (for example, eu1 and eu2) using the format below.

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Example Configuration

[commpeak-eu1]

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

Changing codec priority: Place ulaw before g729:
allow=g729
allow=ulaw

Using username/password authentication:
username=username
secret=password
context=commpeak

3. Configure both trunks on your extension:
   exten =>_X.,1,Dial(SIP/commpeak-eu1/${EXTEN})
exten =>_X.,n,Dial(SIP/commpeak-eu2/${EXTEN})

This setup provides redundancy and ensures reliable connectivity through multiple SIP proxy servers.