After installing Trixbox on my VirtualBox to mess around with, I noticed that many packages were out of date so I went to update those packages.
"It seem to be a session definition issue.
Log in to trixbox via terminal/putty or at the machine and type:
This module provides the ability to specify Sources where inbound calls can have their Caller ID looked up so Caller ID Names can be used or changed.
The purpose of this document is to provide a step by step installation guide of Trixbox using InPhonex as the VoIP provider.