FreeSWITCH SIP Trunk Creation
Introduction
This document provides instructions on how to add a SIP Trunk to FreeSWITCH Server to work with the ProSBC. Please visit the following link for more details about Creating a SIP Trunk in FreeSWITCH Server
FreeSWITCH SIP Trunk Configuration
To configure FreeSWITCH server to work with ProSBC SIP trunk the following changes are required:
1. We will use prsbc.telcobridges.com FQDN as a ProSBC server. You can set anything you want. Or you can use ProSBC IP address. Add /etc/freeswitch/sip_profiles/external/prosbc.xml file:
<include>
<gateway name="prosbc">
<!-- To send calls to prosbc: -->
<param name="proxy" value="prosbc.telcobridges.com"/>
<!-- Registration is not required for FreeSWITCH on Static IP address -->
<param name="register" value="false" />
<param name="username" value=""/>
<param name="password" value=""/>
</gateway>
</include>
2. To send outbound calls to ProSBC SIP Trunk create /etc/freeswitch/dialplan/default/prosbc.xml file:
<include>
<extension name="prosbc_outbound">
<!-- The following line detects outbound calls with a 9 as a dropped prefix -->
<!-- The line after sends the 8-15 digit numbers to the ProSBC gateway -->
<condition field="destination_number" expression="^9(\d{8,15})$">
</condition>
</extension>
</include>
3. To accept incoming calls from Telephone Numbers assigned to your SIP Trunk account create /etc/freeswitch/dialplan/public/prosbc_inbound_did.xml file:
<include>
<extension name="prosbc_did">
<!-- This example maps the DID 14506558993 to ring 1000 in the default context -->
<condition field="destination_number" expression="^(14506558993)$">
</condition>
</extension>
</include>
Note: example above is provided for illustration purposes only. Your actual dialplan will depend on specific FreeSWITCH configuration.
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