Play multi-voice to the caller&callee

Asterisk Asterisk Dialplan
1

when the system answers an incoming call from A, plays waiting music to the caller A, simultaneously dials another number B, plays an alert message when B answers, stops playing waiting music for A when B answers, and plays a message to A when B hangs up or didn’t answer the call.

is there any idea?
I can write in AGI or dialplan, give me a hint…thinks.

2

can park can do this?

3

Why answer A and potentially have their provider charge them, when you don’t know if the call will succeed.

I think most of this can be done, but I think you need to try and then ask about what doesn’t work.

4

you mean park can do this work?