Re: issues on two different session policies in the draft "draft-ietf-sip-session-policy-framework-04"

Yuxia Zhang wrote:
> hi, all
>  
> some issues on two diffrent session policies of draft-ietf-sip-sip 
> session policy-framework need to be queried. could you help me? thanks. 
> as follow,
>  
> Producedures in the draft only describe the usage of the 
> session-specific policy, is right? so as for the session-independent 
> policy, how does UAC retrieve it?

Session-independent policies make use of the config framework 
(http://tools.ietf.org/html/draft-ietf-sipping-config-framework-15) as 
described in the draft.

> it is only through SUBSCRIBE request and only simple interactive, is it 
> ? Then UA will retrieve the session-indepdent immediately  when UA 
> registering himself into the network as the said in the draft that the 
> session-independent  policy always is applied before the 
> session-specific policy, is right ? 
>  
The UA will get session-independent policies when setting up the 
subscription using the config framework as described in section 3.2. 
Yes, session-independent policies are applied before session-specific 
policies are applied.

> if my understanding is right, is it indicated that there is no collide 
> for retrieve of two different policies, then it is no necessary for UAC 
> to differentiate the two different policies, so does the policy server ?
>  
There should be no need for the UA or the policy server to differentiate 
between the two policies. They are applied in the order described above.

Thanks,

Volker



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