By testing with a simple dialplan custom extension I managed to figure out that I can not hear the busy tone on rejected outbound calls because the call is being terminated to early
How do I configure the delay at the end of an outbound call ?
In [macro-dialout-trunk] for the busy case we have the following lines
exten => s-BUSY,1,Noop(Dial failed due to trunk reporting BUSY - giving up)
exten => s-BUSY,n,Playtones(busy)
exten => s-BUSY,n,Busy(20)
I noticed that when placing Wait(5) before Busy(20) I can hear the busy tone and when placing Wait(5) after Busy(20) the call gets dropped immediately and I can not hear the busy tone