[cisco-voip] "Caller ID" on forwarded call

[Peter Slow]

the SIP header that cisco  uses would probably be the diversion
header, and the two IEs that you want to read about for ISDN are
called "redirecting number" and Original called party number" and IOS
can handle both of them.

What I'm NOT sure of is the behavior relating to mapping the SIP
diversion header to either of those two IEs. it wouldnt be difficult
to try in a lab.

-Pete

On Fri, Oct 1, 2010 at 10:01 AM, Andreas Sikkema <asikkema at unet.nl> wrote:
> Hi,
>
> I've been looking all over but I can't find a definitive answer to the
> following. I'm running a SIP based VoIP platform connected to the PSTN via
>
> a number of plain EURO ISDN30's. End users on the platform can configure
> their SIP account to forward all incoming calls to a third party. A calls
> B where B is located on my SIP platform. B forwards the call
> (unconditional, no answer, etc) to C. Changing the normal Caller ID is
> not an option on the call to C unfortunately, due to carrier restrictions.
>
> Is there a way to add an IE to the outgoing ISDN messages to the PSTN
> containing
> the originator of the call? I seem to remember something called
> "redirected number" but I can't find any definitive references to it.
>
> The second question is can the AS5350 add such a header on a plain ISDN30
> based on some SIP header? Which header?
>
> Thanks!
>
> --
> Andreas Sikkema
>
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