AW: [Sip] namespaces in RFC 4411, 4412 and draft-ietf-sip-rph-new-namespaces-00

["Tschofenig, Hannes (NSN - DE/Munich)" <hannes.tschofenig at nsn.com>]

Theoreticallly, there is no relationship between namespaces and domains. 

However, it is possible that different domains use different namespaces. When a SIP message travels along different providers then one would have to map the different priorities someone ....

Ciao
Hannes

> -----Ursprüngliche Nachricht-----
> Von: ext Attila Sipos [mailto:attila.sipos at vegastream.com] 
> Gesendet: Montag, 5. November 2007 16:14
> An: sip at ietf.org
> Betreff: RE: [Sip] namespaces in RFC 4411,4412 and 
> draft-ietf-sip-rph-new-namespaces-00
> 
> 
> Hi,
> 
> I have tried asking these questions on SIP-implementors
> but not getting any responses.  Are these silly questions...?
> 
> 
> 
> 
> -----Original Message-----
> From: sip-implementors-bounces at lists.cs.columbia.edu
> [mailto:sip-implementors-bounces at lists.cs.columbia.edu] On Behalf Of
> Attila Sipos
> Sent: 01 November 2007 08:52
> To: sip-implementors at lists.cs.columbia.edu
> Subject: [Sip-implementors] namespaces in RFC 4411,4412 and
> draft-ietf-sip-rph-new-namespaces-00
> 
> 
> 
> Are namespaces just a way to group together different users across
> different DNS domains?
> 
> What if a.com is using namespaces "dsn-000000" to "dsn-000009"
> and b.com is using the same namespaces?
> Then if A at a.com calls B at b.com, wouldn't the namespaces interfere?
> 
> 
> What looks after or checks the namespaces?
> Is it that a proxy knows what everyone's namespace should be?
> So if someone wants to do "UA Preemption" and tries to use a resource
> priority level higher than they should have, then will the domain's
> proxy downgrade it back to the correct permitted level?
> 
> 
> Regards,
> 
> Attila
> 
> 
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> 


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