asterisk users - Jan 2007 - weird undocumented extensions such as s-BUSY

I've seen several examples that use extensions such as;
s-BUSY
s-NOANSWER

etc...

It's more or less evident what they do, but I've searched for some 
FORMAL documentation everywhere and have found nothing.
Do they work for anything else than "s-"? (I think I've seen other
examples, but can't find them now)
Are they standard in any way?
What are the allowed values after the dash?
In which version were they introduced?
etc...

(please no replies explaining me how "s-BUSY" matches when the start 
extension is set busy or trivial explanations like that)

BarZ

Am Dienstag, den 23.01.2007, 05:41 -0200 schrieb Barzilai
Spinak:
> I've seen several examples that use extensions such as;
> s-BUSY
> s-NOANSWER
> 
> etc...
> 
> It's more or less evident what they do, but I've searched for some 
> FORMAL documentation everywhere and have found nothing.
> Do they work for anything else than "s-"? (I think I've seen
other
> examples, but can't find them now)
> Are they standard in any way?
> What are the allowed values after the dash?
> In which version were they introduced?
> etc...
Those are not standardized extensions. They will be called _ONLY_ by a
Goto() command, like in

exten => s,1,Dial(SIP/user1,60,tT)
exten => s,2,Goto(s-${DIALSTATUS})

so you can choose to put names as you like them before the dash, the
DIALSTATUS variable values will be explained in
http://www.voip-info.org/wiki/view/Asterisk+cmd+Dial and
http://www.voip-info.org/wiki/index.php?page=Asterisk+variable
+DIALSTATUS

I personally prefer to do that with GoTos inside the extension, or using
Macros, but that is up to everyone's personal choice.

BR
Anselm

Barzilai Spinak wrote:
> I've seen several examples that use extensions such as;
> s-BUSY
> s-NOANSWER
>
> etc...
>
> It's more or less evident what they do, but I've searched for some 
> FORMAL documentation everywhere and have found nothing.
> Do they work for anything else than "s-"? (I think I've seen
other
> examples, but can't find them now)
Yes.
> Are they standard in any way?
I'd say no, but it depends how you look at it.
> What are the allowed values after the dash?
Any potential value of ${DIALSTATUS}
> In which version were they introduced?
Not sure, but they are just various destinations for a jump caused by 
Goto(s-${DIALSTATUS})

asterisk doesn't know about and doesn't care about these extensions; 
there is nothing special about them and that's why you can't find any 
documentation.

HTH,
Trevor

exten => s,2,Goto(s-${DIALSTATUS})
ref:
http://www.voip-info.org/wiki/view/DIALSTATUS
http://www.voip-info.org/wiki-Asterisk+variable+DIALSTATUS

I also use HANGUPCAUSE in some circumstances.
exten => s,2,Goto(s-${HANGUPCAUSE})
ref:
http://www.voip-info.org/wiki/index.php?page=Asterisk+Variable+HANGUPCAUSE


-- 
-- 
Steven

http://www.glimasoutheast.org



"Barzilai Spinak" <barcho@creacion.com.uy> wrote in message
news:45B5BC10.2030502@creacion.com.uy...
> I've seen several examples that use extensions such as;
> s-BUSY
> s-NOANSWER
>
> etc...
>
> It's more or less evident what they do, but I've searched for some
FORMAL documentation everywhere and have found nothing.
> Do they work for anything else than "s-"? (I think I've seen
other examples, but can't find them now)
> Are they standard in any way?
> What are the allowed values after the dash?
> In which version were they introduced?
> etc...
>
> (please no replies explaining me how "s-BUSY" matches when the
start extension is set busy or trivial explanations like that)
>
> BarZ
>
>
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Barzilai Spinak wrote:
> I've seen several examples that use extensions such as;
> s-BUSY
> s-NOANSWER
> 
> etc...
> 
> It's more or less evident what they do, but I've searched for some 
> FORMAL documentation everywhere and have found nothing.
> Do they work for anything else than "s-"? (I think I've seen
other
> examples, but can't find them now)
> Are they standard in any way?
> What are the allowed values after the dash?
> In which version were they introduced?
> etc...
> 
> (please no replies explaining me how "s-BUSY" matches when the
start
> extension is set busy or trivial explanations like that)
Try looking in extensions.conf.sample