Fax Pro module dials out but does not initiate the fax transmission

Hello, I am wondering if anybody has a Sangoma Vega gateway setup to connect to the PSTN and successfully have the Fax Pro module on a freepbx box working with that. I have an issue with my outbound faxes where the module will dial out to the number but not initiate the handshake. If anybody has any ideas as to where I could start troubleshooting that would be great, I will post any log files that you guys could suggest as relevant.