Quote Originally Posted by Stormwind View Post
I found the problem: the incoming forwarded Express calls are coming from a server (4.68.250.14 other than sip.voipwelcome.com so I had to canreinvite=no to the [general] section of my asterisk sip.conf in addition to the sip.voipwelcome.com section.

I now have two way voice via SIP on the forwarded calls.

Thanks!
Glad to hear you're up and running.

That's one of the differences in our setup vs many others. The audio typically doesn't go through us and is handled directly by the carrier the call is terminating to.