FreePBX - Setup guide

Permiting TTNC traffic through Sangoma Firewall

The most up to date list of TTNC IPs can be found here: How to setup VoIP destinations

If you are using the Sangoma Firewall, place our IPs within the trusted zone so no filtering will be applied within the FreePBX control panel. This can be done by navigating to Connectivity → Firewall → Network

You can also enable the 'Responsive Firewall' here to block repeated malicious registration attempts.

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Registering a User-Based SIP Trunk

This is a general guide for configuring TTNC SIP trunks with FreePBX; the SIP driver used will be chan_pjsip. UI changes may occur between different versions, but it should be possible to use this guide for any recent installations of the software. This guide is based on version 14.0.5.

This guide assumes you have successfully installed FreePBX and you have the following configured:

• You have configured an Administrative user
• Permitted TTNC traffic through your firewall
• You have created one or more extensions that are registering correctly

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Inbound Numbers

Multiple inbound numbers are not supported on a User-Based trunk. To configure individual numbers, you will have to use an IP authenticated trunk.

Navigate to Connectivity → Trunks
Click Add Trunk → Add SIP (chan_pjsip) Trunk

Under General, set the following:

Under Dialled Number Manipulation Rules, set the following:

Under pjsip Settings → General set the following:
These details are found in myTTNC.

Under pjsip Settings → Advanced set the following:

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"Expiration" to '60'

Under pjsip Settings → Codecs set the following:

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Check 'alaw'

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Register an IP-Based SIP Trunk

This is a general guide for configuring TTNC SIP trunks with FreePBX, the SIP driver used will be chan_sip. UI changes may occur between different versions, but it should be possible to use this guide for any recent installations of the software. This guide is based on version 14.0.5.

This guide assumes you have successfully installed FreePBX and you have the following configured:

• You have configured an Administrative user
• Permitted TTNC traffic through your firewall
• You have created one or more extensions that are registering correctly

Navigate to Settings → Asterisk SIP Settings and set the following:

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Allow Anonymous Inbound SIP Calls = Yes

Navigate to Connectivity → Trunks
Click Add Trunk → Add SIP (chan_pjsip) Trunk

Under General, set the following:

Under Dialled Number Manipulation Rules, set the following:

Under sip Settings → Outgoing set the following:

Trunk Name: This can be anything without spaces or special characters
Peer Details: These details are found in myTTNC.

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type=peer
host=xxxxxxx.sip.ttnc.co.uk
transport=udp
insecure=very
context=from-trunks
dtmfmode=rfc2833
disallow=all
allow=alaw

Change xxxxxxx.sip.ttnc.co.uk to be your SIP Trunk Domain / Outbound Proxy.

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Configuring a User-Based Inbound Route

This guide assumes you have successfully installed FreePBX and you have the following configured:

• You have configured an Administrative user
• Permitted TTNC traffic through your firewall
• You have created one or more extensions that are registering correctly
• You have registered a User-Based SIP Trunk

Navigate to Connectivity → Inbound Routes
Click Add Inbound Route

Under General set the following:

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Configuring an IP-Based Inbound Route

This guide assumes you have successfully installed FreePBX and you have the following configured:

• You have configured an Administrative user
• Permitted TTNC traffic through your firewall
• You have created one or more extensions that are registering correctly
• You have registered an IP-Based SIP Trunk

Navigate to Connectivity → Inbound Routes
Click Add Inbound Route

Under General set the following:

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Configuring an Outbound Route

Navigate to Connectivity → Outbound Routes
Click Add Outbound Route

Under Route Settings set the following

Under Dial Patterns set the following: