[asterisk-users] Is there a way to make asterisk send a INVITE in-dialog to re-establish the audio

Dan Cropp dan at amtelco.com
Fri May 24 09:46:35 CDT 2019

We are working with an Avaya switch.

We send them a REFER.  If the transfer is successful, everything is great.  If it fails (busy), they send an INVITE in-dialog with a media attribute of inactive.  After that, they send a 486 busy.
The problem is Avaya basically put the call on hold so audio is not active.
The Avaya rep is indicating we need to send in dialog invite to get the call audio back?  They are essentially saying they put the call on hold because we told them to transfer and it's our responsibility to take the call off hold.

Is there a way to do this?

Have a great day!
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