Telephony provider recommendation

Hello EE,

We are looking at putting in Cisco phones (VOIP) and currently have about 7 different PRI providers across the US.
I am wondering if anyone can make a recommendation as a mid size company with a handful of locations across the US for a good carrier as I'd like to consolidate to one rather than having to look up the phone number each time to determine which of the 7 it is.
operationsITAsked:
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Bryant SchaperCommented:
You would have to use a national provider, such as ATT, MCI, Verizon.  The local lec, such as CenturyLink where I am would probably not service all locations.

But some of this discussion would be based on your design as well, central dial tone from a single location, then over a vpn network or T1s at each location.
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operationsITAuthor Commented:
Any others besides ATT, MCI or Verizon.  Used any you prefer?
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Bryant SchaperCommented:
We use Centurylink, but we are in a single state, and the lec services all our sites.

I am sure if you google the can find several that are nationwide and international if needed.  We user Bell Cananda in a previous job to service our North America sites
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