Re: I-D Action:draft-rosenberg-sip-target-uri-delivery-00.txt

Hi Jonathan;

  I think when I was reading conditions in section 5.1,I understood
that  it meant if one of the condition is met "target" would be
added, which would have left room for 800 use cases based on
static configuration as you mentioned below.

  But I really don't see how it would differ whether the mapping is
configured through REGISTRATION or not.

  For example the mapping below can be configured through
registration(UA registering to directory and directory registering
to 1-800 number), in which case it will result in 2 H-I entry with
"target" parameters according to the specification(If both proxies
that does the translation supports this specification)...

  I guess I don't really see the reason why the text has to be so
restrictive.

  Regards
   Shida

On 15-Nov-08, at 7:26 AM, Jonathan Rosenberg wrote:

> Actually I removed the 800 use case because it doesn't work so well  
> with the proposed mechanism. The reason is that, this draft is very  
> crisp about how you determine if a URI is a 'target' or not - based  
> on a REGISTRATION. However, for 8xx numbers, my assumption is that  
> they would typically be translated to a non-8xx number by some other  
> configured translation on the server, not via a registration.
>
> For example, a server might have a config like this:
>
> 1-800-555-1212:
>  replace with: [email protected]
>
> and then individual UAs register as 'directory'.
>
> In reality this was a problem in the UA loose route draft too; its  
> really hard to programatically determine that something is a target  
> vs. not a target.
>
> -Jonathan R.
>
>
> Shida Schubert wrote:
>> Jonathan;
>> Thanks for writing up the draft.
>> There was a use-case for freephone number mentioned in section 2.7 of
>> loose-route draft which no longer exists in this draft.
>> I do recall that in section 2.7 of loose-route you expressed that  
>> freephone
>> number is just another form of alias, so I am assuming that is the  
>> reason
>> you removed the text OR was there any technical reason why you  
>> removed
>> the use-case?
>> If there is no technical reason behind removing the text, could you
>> add its use for freephone number as a use-case either as a separate
>> sub-section or as part of alias use-case..
>> Thanks & Regards
>>  Shida
>> On 27-Oct-08, at 1:30 PM, [email protected] wrote:
>>> A New Internet-Draft is available from the on-line Internet-Drafts  
>>> directories.
>>>
>>>    Title           : Delivery of Request-URI Targets to User Agents
>>>    Author(s)       : J. Rosenberg
>>>    Filename        : draft-rosenberg-sip-target-uri-delivery-00.txt
>>>    Pages           : 12
>>>    Date            : 2008-10-26
>>>
>>> When a Session Initiation Protocol (SIP) proxy receives a request
>>> targeted at a URI identifying a user or resource it is responsible
>>> for, the proxy translates the URI to a registered contact URI of an
>>> agent representing that user or resource.  In the process, the
>>> original URI is removed from the request.  Numerous use cases have
>>> arisen which require this information to be delivered to the user
>>> agent.  This document describes these use cases and defines an
>>> extension to the History-Info header field which allows it to be  
>>> used
>>> to support those cases.
>>>
>>> A URL for this Internet-Draft is:
>>> http://www.ietf.org/internet-drafts/draft-rosenberg-sip-target-uri-delivery-00.txt
>>>
>>> Internet-Drafts are also available by anonymous FTP at:
>>> ftp://ftp.ietf.org/internet-drafts/
>>>
>>> Below is the data which will enable a MIME compliant mail reader
>>> implementation to automatically retrieve the ASCII version of the
>>> Internet-Draft.
>>> <mime-attachment>_______________________________________________
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>
> -- 
> Jonathan D. Rosenberg, Ph.D.                   111 Wood Avenue South
> Cisco Fellow                                   Iselin, NJ 08830
> Cisco, Voice Technology Group
> [email protected]
> http://www.jdrosen.net                         PHONE: (408) 902-3084
> http://www.cisco.com

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