this config is working well but I need it to play a prompt if and when there is no answer when from the h323 call
[default]
exten => s,1,Wait,1 ; Wait a second, just for fun
exten => s,2,Answer ; Answer the line
exten => s,3,DigitTimeout,10 ; Set Digit Timeout to 5 seconds
exten => s,4,ResponseTimeout,10 ; Set Response Timeout to 10 seconds
exten => s,5,Read(tel-no,dest-number)
exten => s,6,Background(call-con)
exten => s,7,Dial(H323/7171${tel-no}x.x.130.9)
exten => s-NOANSWER,1,BackGround(astcc-badphone)
exten => i,1,Background(invalid)
exten => i,2,goto(s,2)
exten => t,1,Background(vm-sorry)
exten => t,2,Hangup