External calls sent to an external Misc Destination have no audio

I’m running FreePBX Distro 3.211.63-8 using Asterisk 11.3.0. I’m using Broadvox as a SIP provider and have had no issues until I tried forwarding inbound calls to an external phone number using Miscellaneous Destinations. The call forwards to where it should go but there is no audio on either end.
I read about setting progressinband to yes (which I did in Asterisk SIP Settings/Other SIP Settings) but it didn’t help.
I’ve also toyed with the Reinvite settings in both my SIP trunk and under Asterisk SIP Settings with no success.
Any thoughts on where I’m going wrong?

Any thoughts? I can provide any additional data required.