As I had said before the extension works, the redirect works - on a regular number.
If I replace the redirect with a SIP URI it doesn't work, if I replace it with a false number and have the dial plan rewrite it as a Sip URI and then send out a trunk that only has an outbound proxy it fails to dead air.
I find this so strange I have worked with many other PBX and never had an issue send calls to sip URI - I am not even trying to make a false routing engine that will send multiple calls to their respective SIP URI. ONE simple call to ONE simple SIP URI