Asterisk: The Future of Telephony, 2nd Edition

Name

StackPop() — Removes last address from Gosub() stack

Synopsis

StackPop()

Removes the last address from the Gosub() stack. This is frequently used when handling error conditions within Gosub() routines when it is no longer appropriate to return control of the dialplan back to where the Gosub() routine was called from.

exten => s,1,Read(input,get-input)
exten => s,n,Gosub(validate,1)
exten => s,n,Dial(SIP/${input})
; Ensure that input is between 400 and 499
exten => validate,1,GotoIf($[ ${input} > 499 ]?error,1)
exten => validate,n,GotoIf($[ ${input} < 400 ]?error,1)
exten => validate,n,Return
exten => error,1,StackPop()
exten => error,2,Goto(s,1)

See Also

Return(), Gosub()