I'm using an AS5400 gateway with 124-24T1.
I would like to know if there's a way to place a call or transfer a call to an extension behind a PBX on the PSTN. From the SIP endpoint, I tried to use something like:
either as an INVITE To uri or a REFER Refer-To uri.
I was hoping the GW would send the DTMF string "4321" once it gets a CONNECT from the device at 95145551234 but no luck.
Any idea how to accomplish that?