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

[Boris shtrasman]

On Thu, Aug 18, 2011 at 13:17, ik <idokan at gmail.com> wrote:

> 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.
>
>

So a good practice is to use all the known options ?
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