Asterisk Cmd NoOp

Synopsis:

No operation

Description:

NoOp() – No-operation; Does nothing.
…
Well not quite.

It can be used as a printf, or echo for the console, if your verbose level is set to 3 or higher. For example, Zap channels do not print the callerid information on incoming calls. But this works:

exten => s,1,Answer
exten => s,2,NoOp(${CALLERID})

This works with any variable, so NoOp(${any_var_name}) will print the value of the named variable on the console when that step in the extension is reached. For debugging this can be quite useful.

Note that this is a side effect of the verbosity level being 3 or higher, not a function of the application itself. The application NoOp does nothing.

If you would like output at other verbosity levels (for example, 0), you are encouraged to use the Verbose command.

See Also:

• Asterisk application SetGlobalVar
• Asterisk application Verbose

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