Re: [Simple] tel URIs in common policy

[Aki Niemi <aki.niemi at nokia.com>]

Hi,

I kind of grew fond of the idea Cullen and I came up with in a private 
conversation, namely treating telephone numbers as domains similar to 
when issuing a DNS ENUM query.

In essence, to match +1-232-555-1234, you'd have an identity conditions 
such as:

<many domain="4.3.2.1.5.5.5.2.3.2.1.e164.arpa" />

This has an interesting additional property of being able to match based 
on country code, area code, etc. For example, to match all Finnish 
telephone numbers, you'd have:

<many domain="8.5.3.e164.arpa" />

Not being an expert on ENUM or E.164 in general, I suspect this is 
horribly broken, but it pleases the aesthethic eye.

Cheers,
Aki

ext Henning Schulzrinne wrote:
> In a side conversation, Hannes suggested a solution to the tel URI 
> problem we discussed during the WG meeting, akin to what's done in the 
> geopriv coordinate system parameter, namely to have a parameter that 
> identifies the scheme, as in
>
> <one scheme="tel" id="+1-212-555-1234"/>
>
> or
>
> <one scheme="sip" id="alice at example.com"/>
>
> if you really only want to match SIP identity sip:alice at example.com.
>
> The default with no scheme parameter is "matches any user at domain scheme".
>
> In order to complete finishing the section of the spec, I'd value quick 
> feedback on the idea.
>
> Henning
>
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