AEL supports if and switch statements, like AEL, but adds ifTime, and random. Unlike the original AEL, though, you do NOT need to put curly braces around a single statement in the "true" branch of an if(), the random(), or an ifTime() statement. The if(), ifTime(), and random() statements allow optional else clause.
context conditional { _8XXX => { Dial(SIP/${EXTEN}); if ("${DIALSTATUS}" = "BUSY") { NoOp(yessir); Voicemail(${EXTEN},b); } else Voicemail(${EXTEN},u); ifTime (14:00-25:00,sat-sun,*,*) Voicemail(${EXTEN},b); else { Voicemail(${EXTEN},u); NoOp(hi, there!); } random(51) NoOp(This should appear 51% of the time); random( 60 ) { NoOp( This should appear 60% of the time ); } else { random(75) { NoOp( This should appear 30% of the time! ); } else { NoOp( This should appear 10% of the time! ); } } } _777X => { switch (${EXTEN}) { case 7771: NoOp(You called 7771!); break; case 7772: NoOp(You called 7772!); break; case 7773: NoOp(You called 7773!); // fall thru- pattern 777[4-9]: NoOp(You called 777 something!); default: NoOp(In the default clause!); } } }
NOTE: The conditional expression in if() statements (the "${DIALSTATUS}" = "BUSY" above) is wrapped by the compiler in $[] for evaluation.
NOTE: Neither the switch nor case values are wrapped in $[ ]; they can be constants, or ${var} type references only.
NOTE: AEL generates each case as a separate extension. case clauses with no terminating 'break', or 'goto', have a goto inserted, to the next clause, which creates a 'fall thru' effect.
NOTE: AEL introduces the ifTime keyword/statement, which works just like the if() statement, but the expression is a time value, exactly like that used by the application GotoIfTime(). See Asterisk cmd GotoIfTime
NOTE: The pattern statement makes sure the new extension that is created has an '_' preceding it to make sure asterisk recognizes the extension name as a pattern.
NOTE: Every character enclosed by the switch expression's parenthesis are included verbatim in the labels generated. So watch out for spaces!
NOTE: NEW: Previous to version 0.13, the random statement used the "Random()" application, which has been deprecated. It now uses the RAND() function instead, in the GotoIf application.