Re: Comments on RFC2806bis

At 6:38 pm -0400 22/5/02, Michael Hammer wrote:
>At 05:34 PM 5/22/2002 +0100, Lawrence Conroy wrote:
>>At 3:52 pm -0400 21/5/02, Michael Hammer wrote:
>>>It would not be a good idea to use a local dial plan in an 
>>>international number format as suggested for Vienna.
>>>
>>>In response to my earlier posting
>>>>
>>>>The context is a qualifier on the applicability of the URI. It's not
>>>>really more than one parameter - The single parameter 'phone-context' can
>>>>have more than one value. This can happen due to introduction of 
>>>>relief codes,
>>>>or the Vienna case, where there are two codes to dial Vienna 
>>>>(within Austria).
>>>>Thus a Viennese phone could have two values for its phone context 
>>>>(01 and the
>>>>old code - can't remember what this is, off hand). As an aside, 
>>>>the old code
>>>>is not valid outside Austria, so writing this in International 
>>>>form is strange.
>>
>>To which I respond:
>>Hi Mike, folks,
>>
>>(This may be where we get to counting the number of Angels on a pinhead :)
>>
>>Strictly, the old code is blocked at the International Gateway Exchange.
>>Thus it can be written as a valid E.164 number; it is just blocked from
>>International origination. Both versions are unambiguous, it's just that
>>one is not routable from some origination points.
>>
>>+43-22-123456 - is this an E.164 number?
>>+43-1-123456 - is this an E.164 number?
>>If these are dialled from within Austria, they should terminate at the same
>>'phone. If you try to dial the first variant outside Austria, it's blocked.
>
>I don't understand how you can call the number international if it 
>is blocked when dialed outside Austria.  Isn't that an oxymoron of 
>some type?

Nope.
There are numbers that can be called between several networks and 
within a Group of Countries but are not universally available. Try 
phoning North Korea.
An E.164 number is globally unique, not necessarily globally routable.
=> It's a strange one if 'tis an Oxymoron.

>>Thus, I'm not sure I understand the concern.
I still don't.

atb,
   Lawrence


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