[Asterisk-Users] ISDN (PRI) in the US and Redirect?

[John Millican]

Hello,
I have read about using redirect on a sip channel to get * to step out of the 
voice path.  Is this possible with ISDN or maybe a US T-1?  I would like to 
have the * box answer a call, do some niffty IVR/AGI stuff, and then redirect 
that call back to the originating switch to be passed on to a dialed number 
or straight to a dialed number and then step out of the voice path to free up 
bandwidth.   Is this possible or do I need to get involved in SS7 stuff? I 
have seen a lot of talk on the wiki about redirect but nothing that I 
understand as what I need.  I have seen the manager API redirect to place 2 
calls into a meetme but this is not what I need, also not looking for call 
deflect.
Thank you for any sugestions,
John M