Configure Trunks to use TCP for SIP signalling

To use TCP for SIP signalling, perform the following steps:

Step One:

Enable TCP in SIP Settings:

1. From the UCx Web-based Configuration Utility, navigate to PBX - PBX Configuration - SIP Settings page
2. Scroll down to the Other SIP Settings option
3. Enter the following value: tcpenable = yes
4. Click on Submit Changes button

Step Two:

Add "transport=tcp" to the trunk configuration:

1. From the UCx Web-based Configuration Utility, navigate to PBX - PBX Configuration - Trunks page
2. Select the desired trunk
3. In the PEER Details box, add transport=tcp
4. Click on Submit Changes button
5. Click on Apply Config bar