Semi OT: communication between telco networks

[Lennart Sorensen]

On Tue, Jun 30, 2009 at 08:27:34PM -0400, Aviss,Tyler wrote:
> Not Linux related, but interesting in a technical sense.
>
> I've often heard of ISPs coming to an impasse with pairing agreements,  
> and ceasing to route traffic for each other (resulting in "dead zones"  
> if IPs the clients can't connect to).
>
> Has anyone ever heard of routing issues with phones. President's choice 
> (and many others) use Bell for calls. My Pc card gives a "this call 
> cannot be completed as dialled" when calling a 778-890-xxxx (Fido/Prince 
> George) area phone. I talk to an operator, and from her landline she gets 
> the same message.
>
> I *know* the number is correct, one is my GF's (calling her while in  
> Toronto to finish my house sale, I moved) and one if mine.
>
> This isn't (a least not yet) a complaint about Bell/Fido/PC, but rather a 
> question of whether such things can or often do happen in phone-land. 
> Maybe they use VOIP and it doesn't recognize that extension, or some 
> other weirdness?
>
> Anyone know a company that uses Telus/Rogers/other for phone cards, or  
> someone other than PC that has a cheapie $5 Bell-network card for  
> testing.
>
> PC is supposed to email me when the learned more. Ironically, they  
> likely can't call my cell if their operators have the same issues  
> calling 777 :-)
>
> (sent from my phone, so please excuse the typos)

I have had cases on my Bell cell phone where I tried calling a friends
rogers cell phone and got a 'this number is not in service' message.
2 hours later it worked again.  I have heard of this happening a number
of times.  I have also managed to try calling my father from my cell
phone (which is now on rogers) at home, and have it essentially indicate
'number not in service' while calling the other line at the house worked
fine, and it worked again later that day.

It really seems that sometimes Bell and/or rogers manage to flag numbers
as not in service even though they have been in service for years and
still are, but on the other provider's network.

I think they are both incompetent.

-- 
Len Sorensen
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