Re: AW: AW: [Sip] SIPIT Interop problem with ;user=phone

[Cullen Jennings <fluffy@cisco.com>]

I don't know what I was thinking - I gave the wrong answer. The context in
the tel does not at mean you should attempt to route the call to there - it
is just an identifier of the namespace of who understands the number.

On 8/29/03 13:50, "Stastny Richard" <Richard.Stastny@oefeg.at> wrote:

>>> So, how does the proxy route this message to munich.example.com?
>>> 
>>> /Hisham
>>> 
>> 
>> The same way it routes sip:fluffy@munich.example.com
> 
> Tell that to Dean :) He thinks it is not routable (that's the point I was
> trying to make).
> 
> Warning: this needs NOT to be true and IMHO this part of
> the informational section is misleading. In section 5.1.4 Local numbers
> it is clearly stated:
> 
> "There are two ways to label the context: via a global number or any    |
>  number of its leading digits (e.g., "+33") and via a domain name,      |
>  e.g., "houston.example.com". The choice between the two is left to     |
>  the "owner" of the local number and is governed by whether there is a  |
>  global number or domain name that is a valid identifier for a          |
>  particular local number.
>                                             |
>  The domain name does not have to resolve to any actual host, but MUST  |
>  be under the administrative control of the entity managing the local   |
>  phone context. "
> 
> Since the domain name does not have to resolve to an actual host,
> one cannot rely on this, so your statement may be wrong.
> 
> Richard
> 
> -----Ursprüngliche Nachricht-----
> Von: hisham.khartabil@nokia.com [mailto:hisham.khartabil@nokia.com]
> Gesendet: Fr 29.08.2003 17:31
> An: fluffy@cisco.com; dean.willis@softarmor.com
> Cc: Brian.Rosen@marconi.com; sip@ietf.org
> Betreff: RE: AW: [Sip] SIPIT Interop problem with ;user=phone
> 
> 
> 
> 
> 
>> -----Original Message-----
>> From: ext Cullen Jennings [mailto:fluffy@cisco.com]
>> Sent: Friday, August 29, 2003 5:51 PM
>> To: Khartabil Hisham (NMP/Helsinki); Dean Willis
>> Cc: Brian Rosen; sip@ietf.org
>> Subject: Re: AW: [Sip] SIPIT Interop problem with ;user=phone
>> 
>> 
>> On 8/29/03 1:03, "hisham.khartabil@nokia.com"
>> <hisham.khartabil@nokia.com>
>> wrote:
>> 
>>> Under the informative text in 2806bis labeled "A Use of
>> "tel" URIs with SIP
>>> (Informative)", it says:
>>> 
>>> "
>>>            2.   The outbound proxy does not use the same phone
>>>                 context, but can route to a proxy that handles this
>>>                 phone context. This routing can be done via a lookup
>>>                 table or the domain name of the phone
>> context might be
>>>                 set up to reflect the SIP domain name of a suitable
>>>                 proxy. For example, a proxy may always route calls
>>>                 with tel URIs like
>>> 
>>>                 tel:1234;phone-context=munich.example.com
>>> 
>>>                 to the SIP proxy located at munich.example.com."
>>> 
>>> 
>>> So, how does the proxy route this message to munich.example.com?
>>> 
>>> /Hisham
>>> 
>> 
>> The same way it routes sip:fluffy@munich.example.com
> 
> Tell that to Dean :) He thinks it is not routable (that's the point I was
> trying to make).
> 
> Regards,
> Hisham
> 
> 
>> 
>> 
>> 
> 
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> Use sipping@ietf.org for new developments on the application of sip
> 
> 


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