Jim Henderson wrote:
> True; it would be interesting, for example, to know if my work number 
> counts as part of the PTSN; 

Yes, it does. If you have a phone number, you're part of the PSTN.  If it 
shares phone numbers with other phones (and you have to dial an extension or 
something, or "dial 9 for an outside line and maybe get a busy signal"), 
then it's still part of the PSTN, it's just all behind one phone number.

> all of us in the office have VOIP phones 
> (mine is remote to the office switch most of the time) - from the trunk's 
> perspective, though, I don't think it knows one way or the other.

It has to know how to route your call to the rest of the network.

-- 
Darren New, San Diego CA, USA (PST)
    Ada - the programming language trying to avoid
    you literally shooting yourself in the foot.

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