[asterisk-dev] Call Forwarding Detail Needed

[Arpit Mehta]

Hi,

I just want to know if Asterisk handles a looping case and where does it
handle that .

A--> B --> C--> D --> B

If A calls  B ,
  B call fwds to C ,
  C call fwds to D ,
  D call fwds to B . Now there is a loop .
How does asterisk prevent this loop? I just to know where (as in which
module in the Asterisk source code) and how is this prevented (that is if a
data structure of all the numbers that it has call fwded to is passed on to
B,C,D so that it can detect a loop)?

Thanks. I hope you understand my scenario. Any suggestions are welcome.

Regards

Arpit
On 3/31/07, Steve Totaro <stotaro at totarotechnologies.com> wrote:
>
> Arpit,
>
> My apologies, I thought you posted to the biz list.  Too much
> multi-tasking is my only excuse.
>
> So are you explaining the equivalent of a routing loop in networking
> terms?  I am not really following your scenario but I could see a
> situation if B was forwarded to C and C was forwarded to B.
>
> Thanks,
> Steve
>
> Arpit Mehta wrote:
> > Tomato,
> >
> > Nothing
> >
> > Regards
> >
> > Arpit
> >
> > On 3/31/07, *Steve Totaro* <stotaro at totarotechnologies.com
> > <mailto:stotaro at totarotechnologies.com>> wrote:
> >
> >     Armpit,
> >
> >     Since this is the biz list, how much are you offering for an
> >     answer to
> >     your question?
> >
> >     Thanks,
> >     Steve
> >
> >     Arpit Mehta wrote:
> >     > Hi,
> >     >
> >     > I was going through the Asterisk source code. I was wondering
> >     whether
> >     > in a call forwarding unconditional/transfer situation for eg:- A
> >     calls
> >     > B and B forwards/transfer the call to C. So now A and C are
> >     connected.
> >     > In such a case if B's number is also sent to C (and A's number
> would
> >     > be forwarded if CLI is enabled) ? I think it should be forwarded
> >     > because to detect loops in a call forwarding/transfer situation.
> >     >
> >     > Thanks. Any suggestions are welcome.
> >     >
> >     > Regards
> >     >
> >     > --
> >     > Arpit Mehta
> >     > Graduate Student
> >     > Department of Computer Science
> >     > Columbia University
> >     >
> >
> ------------------------------------------------------------------------
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> >
> >
> >
> >
> > --
> > Arpit Mehta
> > Graduate Student
> > Department of Computer Science
> > Columbia University
> >
> > Tel: 1-646-387-5998
> > ------------------------------------------------------------------------
> >
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>


-- 
Arpit Mehta
Graduate Student
Department of Computer Science
Columbia University

Tel: 1-646-387-5998
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