IVR menu when the line is busy. Notification. What to add?

Question

Asterisk

Greetings comrades!
Tell me how to add the correct phrase in Asterisk when the line is busy? Now in the extension in the IVR menu item is the following:

[ivr-main]
exten => s,1,Answer()
exten => s,2,Background(/etc/asterisk/ivr/ivr-welcome-02)
exten => s,3,WaitExten(5)
exten => _XXX,1,Dial(SIP/${EXTEN})
exten => _XXX,2,Playback(privacy-incorrect)
exten => _XXX,3,Goto(ivr-main,s,1)
exten => t,1,Dial(SIP/101)

And even when the line is busy, the robot says "Wrong number dialed", as I believe because of "privacy-incorrect", what needs to be added so that the accompanying phrase is played when the line is busy?

Answer 1

Option 1: Parse the DIALSTATUS variable after the call ends.
Option 2: Parse SIPPEER(${EXTEN}, curcalls) before calling.