Re: AW: AW: AW: [Sipping-tispan] Requirements 02e

"Tom-PT Taylor" <taylor@nortel.com> Fri, 30 September 2005 14:09 UTC

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Date: Fri, 30 Sep 2005 10:07:30 -0400
From: "Tom-PT Taylor" <taylor@nortel.com>
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To: Paul Kyzivat <pkyzivat@cisco.com>
Subject: Re: AW: AW: AW: [Sipping-tispan] Requirements 02e
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It's not quite that dramatic.  I seem to recall that this sort of 
capability requires a "special arrangement" between the caller's 
organization and the service provider.  There's a certain amount of 
transitive trust based on that -- the service provider might end the 
arrangement if there are complaints.  Agreed, that's not a lot.

BTW the identity I've configured on my SIP client seems to be displayed 
in the PSTN unchanged.

Paul Kyzivat wrote:
> 
> 
> Jesske, R wrote:
> 
>> Paul,
>> with regard to the interworking to the PSTN/ PSTN Phones via a 
>> Terminal adapter the same procedures as used within the PSTN/ISDN apply.
>>
>> The P-Asserted-Id is mapped to the Connected number and the "new 
>> P-Additional ID" is mapped to the Generic number (additional Connected 
>> number).
>>
>> When at the originating Switch a backward message is received with 
>> both elements only the user provided (additional connected number) 
>> will presented to the user.
>> The connected number is stored within the exchange.
>>
>> We have the same mapping and procedures with the P-Asserted-ID and the 
>> >From header.
> 
> 
> So, what you are telling me is that callerid (and callee identity) is a 
> complete joke - that it has no legitimacy at all! The value displayed 
> *may* be a value authenticated by the provider, and it *may* be a value 
> that was provided by the other end without authentication, and I have no 
> way of discerning which it is. So I must assume that callerid is always 
> a lie.
> 
> And this is a service you wish to simulate ???
> 
>     Paul
> 
>> I hope this clarifies.
>>
>> Bets Regards
>>
>> Roland
>>
>>
>>> -----Ursprüngliche Nachricht-----
>>> Von: Paul Kyzivat [mailto:pkyzivat@cisco.com] Gesendet: Donnerstag, 
>>> 29. September 2005 15:05
>>> An: Jesske, Roland
>>> Cc: Miguel.An.Garcia@nokia.com; sipping-tispan@ietf.org
>>> Betreff: Re: AW: AW: [Sipping-tispan] Requirements 02e
>>>
>>>
>>>
>>>
>>> Jesske, R wrote:
>>>
>>>> Paul,
>>>> The callee has the possibility to subscribe to an not 
>>>
>>>
>>> screening option so that the additional identity can be included by 
>>> the subscriber.
>>>
>>>> So the final SIP response will include a P-Asserted-id and 
>>>
>>>
>>> an additional identity.
>>>
>>>> So the originating user can receive either two identities 
>>>
>>>
>>> or only one.
>>>
>>>> It is up to the UA to decide which one shall be presented.
>>>>
>>>> With regard to the PSTN/ISDN service this is true. But If I 
>>>
>>>
>>> see the presentation of the From header and the P-Asserted-Identity 
>>> header in forward direction, I think we should do the same in 
>>> backward direction, that both identities will be sent to the Caller 
>>> back.
>>>
>>> OK. That relieves some of my concern, since you are leaving the 
>>> decision of what to display to the UA, and it is clear to the UA 
>>> which is authenticated and which is not.
>>>
>>> But I am still interested in what you expect to happen when this is 
>>> gatewayed to the PSTN, or when the UA is an analog interface 
>>> connected to a phone with "callerid box". AFAIK, the callerid box 
>>> will only display one name+number per call and doesn't have any way 
>>> to indicate whether the id it is displaying has been authenticated or 
>>> not. This is distressing if the displayed id may sometimes be 
>>> authenticated and sometimes not.
>>>
>>> However I don't find the precedent of From vs P-Asserted-ID as 
>>> compelling for doing something similar in the reverse direction. The 
>>> From and To headers are turning out to be useless in environments 
>>> that use P-Asserted-ID, and probably should just be ignored. In this 
>>> environment it would make some sense to always populate them with 
>>> Anonymous.
>>>
>>>     Paul
>>>
>>>
>>>> Roland
>>>>
>>>>
>>>>
>>>>> -----Ursprüngliche Nachricht-----
>>>>> Von: Paul Kyzivat [mailto:pkyzivat@cisco.com] Gesendet: Montag, 26. 
>>>>> September 2005 17:02
>>>>> An: Jesske, Roland
>>>>> Cc: Miguel.An.Garcia@nokia.com; sipping-tispan@ietf.org
>>>>> Betreff: Re: AW: [Sipping-tispan] Requirements 02e
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Jesske, R wrote:
>>>>>
>>>>>
>>>>>>> -----Ursprüngliche Nachricht-----
>>>>>>> Von: sipping-tispan-bounces@ietf.org 
>>>>>>> [mailto:sipping-tispan-bounces@ietf.org] Im Auftrag von 
>>>
>>>
>>> Paul Kyzivat
>>>
>>>>>>> Gesendet: Donnerstag, 22. September 2005 21:09
>>>>>>> An: Miguel Garcia
>>>>>>> Cc: sipping-tispan@ietf.org
>>>>>>> Betreff: Re: [Sipping-tispan] Requirements 02e
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Miguel Garcia wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> That is my understanding. If I recall correctly, the idea 
>>>>>>>
>>>>>>>
>>>>>>> is to emulate
>>>>>>>
>>>>>>>
>>>>>>>> the PBX, where the callee can indicate a direct-to-call 
>>>>>>>
>>>>>>>
>>>>>>> number (URI).
>>>>>>>
>>>>>>> OK, so the callee can indicate it. What happens at the calling 
>>>>>>> end? Is it displayed instead of the callerid? Is it displayed in 
>>>>>>> addition to the callerid? Is it retained by the calling UA and 
>>>>>>> used in some circumstance?
>>>>>>
>>>>>>
>>>>>>
>>>>>> [RJ] This ID is displayed at the callers UA instead of the 
>>>>>
>>>>>
>>>>> dialled number or the P-Asserted-ID sent from the 
>>>
>>>
>>> terminating network.
>>>
>>>>> Which network element makes the decision about which one to 
>>>>> display? Is it a network element operating on behalf of the callee, 
>>>>> one operating on behalf of the caller, or is it the caller itself 
>>>>> that decides?
>>>>>
>>>>>
>>>>>
>>>>>> The Reply-to header can only be used in from the Caller so 
>>>>>
>>>>>
>>>>> it is not possible to use this ID for the callee.
>>>>>
>>>>>
>>>>>> Also the Contact header is not appropriate.
>>>>>>
>>>>>> The equivalent in PSTN is the COLP/COLR service. There we 
>>>>>
>>>>>
>>>>> have a connected and additional connected number. Normally only the 
>>>>> connected number that is a network asserted number will be shown. 
>>>>> But there is also the possibility to allow the user to present a 
>>>>> number sent from his phone directly. (so called no screening 
>>>>> option) So we trust the user that it is a dialable and valid 
>>>>> number. This feature will be used from PBX.
>>>>>
>>>>>
>>>>>> So we want the have the same within SIP. In forward 
>>>>>
>>>>>
>>>>> direction we have the From header and the P-Asserted-Identity. But 
>>>>> in Backward direction the equivalent to the From header is missing.
>>>>>
>>>>>
>>>>>> So we need such an identity header for the backward 
>>>>>
>>>>>
>>>>> direction setup from the callee.
>>>>>
>>>>> It sounds like the calling device gets one number, which could be 
>>>>> either a number that the network can vouch for, or one that the 
>>>>> network cannot vouch for. Does the calling device have indication 
>>>
>>>
>>> about which
>>>
>>>>> case holds? If it doesn't trust the number from the callee, can it 
>>>>> get the asserted id instead?
>>>>>
>>>>>     Paul
>>>>>
>>>>>
>>>>>
>>>>>> Roland
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>> This sounds a lot like the SIP Reply-To header, which can be 
>>>>>>> there and carry information, but which has never had any clear 
>>>>>>> utility, and so has essentially never been used.
>>>>>>>
>>>>>>>     Paul
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> /Miguel
>>>>>>>>
>>>>>>>> Paul Kyzivat wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>> Re TIP: What is the caller supposed to do with this 
>>>>>>>
>>>>>>>
>>>>>>> multiplicity of
>>>>>>>
>>>>>>>
>>>>>>>>> addresses? Are we to imagine that the device will present 
>>>>>>>
>>>>>>>
>>>>>>> the caller
>>>>>>>
>>>>>>>
>>>>>>>>> with all of them so that he may pick which to use when 
>>>>>>>
>>>>>>>
>>>>>>> making a future
>>>>>>>
>>>>>>>
>>>>>>>>> call?
>>>>>>>>>
>>>>>>>>>  Paul
>>>>>>>>>
>>>>>>>>> Miguel Garcia wrote:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Inline discussion
>>>>>>>>>>
>>>>>>>>>> Rocky Wang wrote:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>> Hi, Miguel,
>>>>>>>>>>>
>>>>>>>>>>> For REQ-TIP-1, I agree with you and it is the same of 
>>>>>>>
>>>>>>>
>>>>>>> ours. But
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>> previously I misunderstand it that the direct 
>>>>>>>
>>>>>>>
>>>>>>> communication means it
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>> should reach to the same terminal.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Ok, I can add a clarification that there is not a 
>>>>>>>
>>>>>>>
>>>>>>> requirement to end
>>>>>>>
>>>>>>>
>>>>>>>>>> up in the same terminal.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>> But for REQ-TIP-3, maybe there are still some 
>>>>>>>
>>>>>>>
>>>>>>> security problem.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>> Suppose user B set and his terminal returns a 
>>>>>
>>>>>
>>>>> subscriber C's URI
>>>>>
>>>>>>>>>>> back to
>>>>>>>>>>> the calling party A, then what will happen? It will be 
>>>>>>>
>>>>>>>
>>>>>>> possible that
>>>>>>>
>>>>>>>
>>>>>>>>>>> the
>>>>>>>>>>> user A will be misleaded to make a call to C but he 
>>>>>>>
>>>>>>>
>>>>>>> wants to make
>>>>>>>
>>>>>>>
>>>>>>>>>>> one to
>>>>>>>>>>> user B actually.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Shame. As I said, there isn't a requirement for the 
>>>>>>>
>>>>>>>
>>>>>>> network to assert
>>>>>>>
>>>>>>>
>>>>>>>>>> the additional identity. This has been clarified a few 
>>>>>>>
>>>>>>>
>>>>>>> times in the
>>>>>>>
>>>>>>>
>>>>>>>>>> past, and remember, I am not the owner of the 
>>>>>>>
>>>>>>>
>>>>>>> requirements, just the
>>>>>>>
>>>>>>>
>>>>>>>>>> scribe. So from TISPAN point of view, the requirement is 
>>>>>>>
>>>>>>>
>>>>>>> as is, and
>>>>>>>
>>>>>>>
>>>>>>>>>> the security implications are accepted.
>>>>>>>>>>
>>>>>>>>>> /Miguel
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>> Best Regards,
>>>>>>>>>>> Rocky Wang
>>>>>>>>>>>
>>>>>>>>>>> -----Original Message-----
>>>>>>>>>>> From: Miguel Garcia [mailto:Miguel.An.Garcia@nokia.com] Sent: 
>>>>>>>>>>> 2005?9?21? 14:37
>>>>>>>>>>> To: Rocky Wang
>>>>>>>>>>> Cc: sipping-tispan@ietf.org
>>>>>>>>>>> Subject: Re: [Sipping-tispan] Requirements 02e
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Hi Rocky:
>>>>>>>>>>>
>>>>>>>>>>> inline discussion.
>>>>>>>>>>>
>>>>>>>>>>> Rocky Wang wrote:
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>> But I have some more doubts on TIP:
>>>>>>>>>>>> REQ-TIP-1: In addition to any network asserted 
>>>>>>>
>>>>>>>
>>>>>>> identity, it must be
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>>>           possible for the callee to indicate in a 
>>>>>>>
>>>>>>>
>>>>>>> SIP response an
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>>>           additional identity where he is reachable 
>>>>>>>
>>>>>>>
>>>>>>> for future
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>>>           direct communications.
>>>>>>>>>>>> Does it mean the back identifier must be something 
>>>>>>>
>>>>>>>
>>>>>>> like gruu? The
>>>>>>>
>>>>>>>
>>>>>>>>>>>> one who answers the call from one endpoint does not 
>>>>>>>
>>>>>>>
>>>>>>> always mean the
>>>>>>>
>>>>>>>
>>>>>>>>>>>> caller should make a call to this endpoint directly later.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> As far as I understand, there is not a requirement for 
>>>>>>>
>>>>>>>
>>>>>>> this to be a
>>>>>>>
>>>>>>>
>>>>>>>>>>> GRUU. This is just another URI that would lead to the 
>>>>>>>
>>>>>>>
>>>>>>> same person,
>>>>>>>
>>>>>>>
>>>>>>>>>>> but not necessarily to the same terminal.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>> REQ-TIP-3: The identity mentioned in REQ-TIP-1 is 
>>>>>>>
>>>>>>>
>>>>>>> considered an end
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>>>           user supplied information that is not 
>>>>>>>
>>>>>>>
>>>>>>> asserted by the
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>>>           network.
>>>>>>>>>>>> Does it mean the network equipments just transfer 
>>>
>>>
>>> the called
>>>
>>>>>>>>>>>> party's identifier provided by the called party 
>>>>>>>
>>>>>>>
>>>>>>> endpoint? It must
>>>>>>>
>>>>>>>
>>>>>>>>>>>> be also asserted, I think. Or, it will cause some 
>>>>>>>
>>>>>>>
>>>>>>> security problem.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> It means that the network does not verify the validity 
>>>>>>>
>>>>>>>
>>>>>>> of this URI.
>>>>>>>
>>>>>>>
>>>>>>>>>>> It is up to the user to put something meaningful there. 
>>>>>>>
>>>>>>>
>>>>>>> This is the
>>>>>>>
>>>>>>>
>>>>>>>>>>> requirement.
>>>>>>>>>>>
>>>>>>>>>>> BR,
>>>>>>>>>>>
>>>>>>>>>>>      Miguel
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>> Regards,
>>>>>>>>>>>> Rocky Wang
>>>>>>>>>>>>
>>>>>>>>>>>> -----Original Message-----
>>>>>>>>>>>> From: Miguel Garcia [mailto:Miguel.An.Garcia@nokia.com]
>>>>>>>>>>>> Sent: 2005?9?20? 14:46
>>>>>>>>>>>> To: Rocky Wang
>>>>>>>>>>>> Cc: sipping-tispan@ietf.org
>>>>>>>>>>>> Subject: Re: [Sipping-tispan] Requirements 02e
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Hi Rocky:
>>>>>>>>>>>>
>>>>>>>>>>>> Yes, I think we agreed that this is a missing 
>>>>>>>
>>>>>>>
>>>>>>> requirement, but we want
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>>> to write it down when we have finished the other 
>>>>>>>
>>>>>>>
>>>>>>> requirements, because
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>> it may happen that the calling part categories 
>>>>>>>
>>>>>>>
>>>>>>> requirements help us in
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>> creating a proper dependency.
>>>>>>>>>>>>
>>>>>>>>>>>> So this is not forgotten, it will be added at a later time.
>>>>>>>>>>>>
>>>>>>>>>>>> BR,
>>>>>>>>>>>>
>>>>>>>>>>>>   Miguel
>>>>>>>>>>>>
>>>>>>>>>>>> Rocky Wang wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>> Hi, Migues,
>>>>>>>>>>>>> As I considered, the requirement of overrding ACR 
>>>>>>>
>>>>>>>
>>>>>>> service must be
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>>>> there as a formal requirement. Maybe there are some 
>>>>>>>
>>>>>>>
>>>>>>> ways that the
>>>>>>>
>>>>>>>
>>>>>>>>>>>>> called AS to get enough information to determine that 
>>>>>>>
>>>>>>>
>>>>>>> it can or
>>>>>>>
>>>>>>>
>>>>>>>>>>>>> cannot
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>> override the ACR, but there are some cases the 
>>>>>>>
>>>>>>>
>>>>>>> simulation service
>>>>>>>
>>>>>>>
>>>>>>>>>>>>> must
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>> be overrided, including the case you listed in the 02a 
>>>>>>>
>>>>>>>
>>>>>>> version. It
>>>>>>>
>>>>>>>
>>>>>>>>>>>>> can
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>> be like this: 1. The originating network shall be able 
>>>>>>>
>>>>>>>
>>>>>>> to take enough
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>>>> calling party's information to the terminating network 
>>>>>>>
>>>>>>>
>>>>>>> to help to
>>>>>>>
>>>>>>>
>>>>>>>>>>>>> override the callee's ACR service. 2. The 
>>>
>>>
>>> terminating network
>>>
>>>>>>>>>>>>> shall be
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>> able to override the callee's ACR simulation service 
>>>>>>>
>>>>>>>
>>>>>>> if the caller is
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>>>> authorized to do this based on the caller's information.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Rocky Wang
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> -----Original Message-----
>>>>>>>>>>>>> From: sipping-tispan-bounces@ietf.org
>>>>>>>>>>>>> [mailto:sipping-tispan-bounces@ietf.org] On Behalf Of 
>>>>>>>
>>>>>>>
>>>>>>> Miguel Garcia
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>>>> Sent: 2005?9?9? 20:57
>>>>>>>>>>>>> To: 'sipping-tispan@ietf.org'
>>>>>>>>>>>>> Subject: [Sipping-tispan] Requirements 02e
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> Hi:
>>>>>>>>>>>>>
>>>>>>>>>>>>> I have another working copy of the TISPAN 
>>>>>>>
>>>>>>>
>>>>>>> requirements, now version
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>>>>>> 02e:
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>
>>>>>>> http://people.nokia.net/~miguel/drafts/pre/draft-jesske-sippin
>>>>>>> g-tispan
>>>>>>>
>>>>>>>
>>>>>>>>>>>>> -r
>>>>>>>>>>>>> equirements-02e.html
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>> http://people.nokia.net/~miguel/drafts/pre/draft-jesske-sipp
>>>>
>>>>
>>>> ing-tispan
>>>>
>>>>
>>>>>>>>>>> -r
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>> equirements-02e.txt
>>>>>>>>>>>>
>>>>>>>>>>>> And a diff version with respect 02d:
>>>>>>>>>>>>
>>>>>>
>>>>>> http://people.nokia.net/~miguel/drafts/pre/draft-jesske-sippin
>>>>>
>>>>>
>>>>> g-tispan
>>>>>
>>>>>
>>>>>>>>>>> -r
>>>>>>>>>>> equirements-02d-to-e.html
>>>>>>>>>>>
>>>>>>>>>>> The main changes this time are:
>>>>>>>>>>>
>>>>>>>>>>> - Rewording of the CCBS/CCNR requirements as per our 
>>>
>>>
>>> discussion. I
>>>
>>>>>>>>>>> have
>>>>>>>>>>> added a few definitions and try to reorder them 
>>>
>>>
>>> sequentially, so
>>>
>>>>>>>>>>> that they are a bit easier to understand.
>>>>>>>>>>> - Clarification that the TIP requirements are for an 
>>>
>>>
>>> additional (to
>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> the
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>> asserted) identity.
>>>>>>>>>>> - Addition of the Communication Waiting requirements
>>>>>>>>>>>
>>>>>>>>>>> Please feel free to comment, but bear in mind that due to the 
>>>>>>>>>>> TISPAN meeting next week most of the TISPANers will 
>>>
>>>
>>> have limited
>>>
>>>>>>>>>>> time to discuss.
>>>>>>>>>>>
>>>>>>>>>>> /Miguel
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>> _______________________________________________
>>>>> Sipping-tispan mailing list
>>>>> Sipping-tispan@ietf.org
>>>>> https://www1.ietf.org/mailman/listinfo/sipping-tispan
>>>>>
>>>>
>>>>
>>
> 
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