Asterisk 11

Is this version support PRACK?


PRACK is recognized by the trunk version but results in a “501 Method Not Implemented” response. It is also known to the low level code for outgoing requests, but there is no means to generate it.

I think you can safely assume there is no mechanism to re-transmit provisional responses.

Basically, the answer is that you will have to wait until October, at the earliest, for PRACK in any supported version of Asterisk. That doesn’t mean that it will definitely be in version 12.

What system will not work without it? It is likely to have difficulty talking to lots of things.