How to make long beeps in the absence of a sip client registration?

Question

Asterisk

On an incoming call, if the sip client of the called number is not connected to the server, the call is dropped. How to make long beeps instead of reset? No transfer is required to voice mail.
Asterisk PBX 11

Answer 1

Check the SIPPEER(${peer},status) status, if it is UNREACHABLE, then go to a separate dialplan branch in which you play anything to the caller.

Answer 2

In my opinion, after the Dial() step in the dialplan, you can make playback, for example:
exten => s,1,Dial()
exten => s,n,Playback(some_sound_file)

Answer 3

We still managed to find such an option *, now the beeps go instead of resetting.
*
ringing
wait (60)