Hi All

After a Dial() I get:

WARNING[7964][C-000075a8]: app_dial.c:2437 dial_exec_full: Unable to create
channel of type 'SIP' (cause 20 - Subscriber absent)

if the subscriber is not registered.

Is there a way from dialplan to know, *before* Dial(), if a destination
Subscriber is
        a) not registered or
        b) busy ?

I need to redirect a call to some other Subscriber if (s)he is not there like 
this: Dial(SIP/1&SIP/2&SIP/3).
So if "2" is not registered (or is busy) then Dial(SIP/1&SIP/5&SIP/3).

Regards
        
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Ethy H. Brito         /"\
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