What field is used as a SCREENING number when using SIP.

[ik]

2011/8/18 Boris shtrasman <borissh1983 at gmail.com>

> Hi ,
>
> with plain old SS7 we send a number and fill a field -  how we got the
> calling number  (Screening indicator), but what happen with SIP ?
>
> I noticed a few practices how this data is passed (using a hint ,
> P-Asserted-Identity and  Remote-Party-ID )  but I'm searching for a common
> solution rather the checking all options to what should I expect when
> sending a SIP message from my SER to other networks (peering).
>
> what would be a good solution for forwarding a blocked call ?
> how should i fill the the invite on my ser so I could block / unblock call
> ?
>

As far as I know, there is no single way of doing it. I do not know the
whole RFC's of SIP, but in practice it depends on the provider gateway.


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Ido
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