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

[hisham.khartabil@nokia.com]

We both live in Finland. You expect me to dial +358 every time I call you?

> -----Original Message-----
> From: ext Juha Heinanen [mailto:jh@tutpro.com]
> Sent: Wednesday, September 03, 2003 1:31 PM
> To: Khartabil Hisham (NMP/Helsinki)
> Cc: Brian.Rosen@marconi.com; Richard.Stastny@oefeg.at; 
> fluffy@cisco.com;
> dean.willis@softarmor.com; sip@ietf.org
> Subject: RE: AW: AW: [Sip] SIPIT Interop problem with ;user=phone
> 
> 
> hisham.khartabil@nokia.com writes:
> 
>  > When if I hand you this on a business card:
>  > 
>  > Phone: 0401234567
>  > 
>  > and one of your colleagues hands you this:
>  > 
>  > SIP: 0401234567@tutpro.com
>  > 
>  > What do you dial to call me and what do you dial to call your
>  > colleague, using your phone? How does your proxy tell the 
> difference?
> 
> what would the phone network do if someone in india dials the 
> number you
> gave?  it would do the same as my proxy:  route the call to a
> destination in a wrong local network or declare the destination
> unreachable.
> 
> it is thus the responsibility of the user to figure out, how to turn
> 0401234567 into something that is correctly routable by the proxy of
> that user the user might, for example, try to figure out from the
> address on the business card in which country the person 
> lives and then
> add the corresponding cc into the number.  
> 
> that is what people do every day when they have to deal with 
> local phone
> numbers in other regions.  i don't understand why we discuss this on a
> mailing list of a standards body.
> 
> -- juha
> 

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