I have a situation where I need to keep the b-leg on the line after the a-leg hangs up so that the b-leg can be presented with an IVR menu. Is this possible to do? Can it be done purely in the dialplan XML or is a different approach, e.g. a Lua script or similar, required? If the latter an example would be helpful.
I have tried using the following channel variables to do this without success:
- transfer_after_bridge
- exec_after_bridge_app / exec_after_bridge_arg