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This application is generally used to adjust how after hours calls are handled internally. It’s like an after hour service that receives your call like a secretary when the office is closed.

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Posted by willie_jameson

The key to conditional branching is the GotoIf() application. GotoIf() evaluates an
expression and sends the caller to a specific destination based on whether the expres-
sion evaluates to true or false.
GotoIf() uses a special syntax, often called the conditional syntax:
GotoIf(expression?destination1:destination2)
If the expression evaluates to true, the caller is sent to destination1. If the expression
evaluates to false, the caller is sent to the second destination. So, what is true and what
is false? An empty string and the number 0 evaluate as false. Anything else evaluates as
true.
The destinations can each be one of the following:
• A priority label within the same extension, such as weasels
• An extension and a priority label within the same context, such as 123,weasels
• A context, extension, and priority label, such as incoming,123,weasels

Either of the destinations may be omitted, but not both. If the omitted destination is
to be followed, Asterisk simply goes on to the next priority in the current extension.
Let’s use GotoIf() in an example:
exten => 345,1,Set(TEST=1)
exten => 345,n,GotoIf($[${TEST} = 1]?weasels:iguanas)
exten => 345,n(weasels),Playback(weasels-eaten-phonesys)
exten => 345,n,Hangup()
exten => 345,n(iguanas),Playback(office-iguanas)
exten => 345,n,Hangup()

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Posted by sagitraz