Tutorials: IP Auth SIP Trunk Setup

Required Access: FreePBX

Last Updated: 7/2/2025

Click on the "Connectivity" tab, then click on "Trunks" from the drop-down menu.

Add a new SIP (chan_pjsip) Trunk.

Enter the following:

• Trunk Name: Voxtelesys
• Outbound CallerID: Number from Voxtelesys
• Maximum Channels: Line limit from Voxtelesys

Change to the "Dialed Number Manipulation Rules" tab.

Match the rules below:

• Prepend: 1 | Match Pattern: NXXNXXXXXX
• Match Pattern: 1NXXNXXXXXX
• Match Pattern: 911
• Match Pattern: 922 Test dial 911 to verify address
• Match Pattern: 011. International calling

Change to "pjsip Settings" tab.

Enter the following:

• Authentication: None
• SIP Server: IP From Voxtelesys

Set the following codecs in order:

1. ulaw
2. alaw
3. g729

Submit and apply the configuration.