Can Asterisk do a single line transfer on a PRI circuit? It is supposed to support 2bct but it doesn’t work. I’ve heard it referred to as tromboning or hairpinning? Basically transfer back out the channel the call came in on. This is * v220.127.116.11 and dahdi 2.2.0 I think.
This is basicly route optimisation. If the PRI is connected to the PSTN you need to speak with the supplier, Normally this isnt supported, as it cases issues with the suppliers billing of the calls.