[asterisk-users] Questions about SIP From, P-Asserted-Id fields and Diversion headers ?

[Olivier]

2018-06-05 15:27 GMT+02:00 George Joseph <gjoseph at digium.com>:
Thank  you very much, George for replying.

>
>
> On Tue, Jun 5, 2018 at 3:35 AM Olivier <oza.4h07 at gmail.com> wrote:
>
>> Hi,
>>
>> After a long discussion with a friend, I would like to ask here:
>>
>> 1.According SIP RFCs, is possible/recommended to have different values in
>> From and P-Asserted-Id fields ?
>> For instance, From field showing 123456789 and P-Asserted-Id showing
>> 987654321 (beside privacy considerations) ?
>>
>
> Possible? yes absolutely.
>

How would you then configure both headers, respectively ?

>From memory, in previous testings, whenever  CALLERID was set to WHATEVER,
P-Asserted-Id was also set to WHATEVER and vice versa, so that I inferred
from this that P-Asserted-Id was meant for Privacy considerations and
nothing else (see [1])


[1]
https://www.voip-info.org/p-asserted-identity-and-remote-party-id-header/


> Recommended? who knows?  Implementations are all over the place.  I've
> always thought of the From header as identifying the user agent making the
> request which kinda agrees with RFC3261.   The PAI header should contain
> the identity of the original caller.
>
>
>>
>> 2. When Bob forwards to Cory a call coming from Alice, would expect
>> Diversion/History-Info header to include Alice's number ?
>>
>
> No.  The diversion header shows who the diverter is.
> https://tools.ietf.org/html/rfc5806
>
>
>
>
>>
>> Best regards
>> --
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>
>
> --
> George Joseph
> Digium, Inc. | Software Developer
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - US
> Check us out at: www.digium.com & www.asterisk.org
>
>
> --
> _____________________________________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
>
> Check out the new Asterisk community forum at:
> https://community.asterisk.org/
>
> New to Asterisk? Start here:
>       https://wiki.asterisk.org/wiki/display/AST/Getting+Started
>
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