Re: AW: AW: AW: [Sipping-tispan] TISPAN requirements, first requiemen ts

[Paul Kyzivat <[e-mail]>]

I agree with Miguel.

I understand that there are cases where the system doesn't know who the 
caller is, but in that case I have already suggested that you insert a 
P-Asserted-Identity with a special value, such as perhaps just an 
identity of the originating network that is making assertions about the 
role of the caller. Once you have that header you can add role 
parameters to it.

In the case where the identity has to be made up in this way you can 
also, if you wish, insert a Privacy header that causes this made-up 
identity to be restricted.

	Paul

Miguel Garcia wrote:
> Hi Roland:
> 
> If you don't have a P-Asserted-Identity in the signalling, is because 
> the trust relationship has been broken at some point, in which case, you 
> shouldn't trust also the role parameter independently of the header 
> where you put it.
> 
> The nice property of adding a role parameter to the P-Asserted-Identity 
> header is that you get the trust for free, which is the expected 
> behaviour for this service.
> 
> /Miguel
> 
> Jesske, R wrote:
> 
>>>> I think it might be worth considering adding role parameters to 
>>>> P-Asserted-ID.
>>>
>>>
>>> That is OK with me and solves most of the problems.
>>>
>>
>>
>>
>> Paul,
>> I have to revice my proposal. I thought that is the solution to bind 
>> it to the P-Asserted-Id. But in the case were we have a anonymous 
>> communication restricted by the network. We usually have no Calling 
>> Party number. And therefore also no P-Asserted-Identity.
>> So we cannot bind this to the P-Asserted-Identity.
>>
>> Perhaps we can bind it to the privacy header?
>>
>> Or any other?
>>
>> Best Regards.
>>
>> Roalnd
>>
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> 
> 

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