On Tue, Aug 25, 2015 at 11:49 PM, John Levine <[email protected]> wrote:
> >> most landline carriers won't port it to a landline if it's out of > >> ratecenter. > > > >I thought ports were only possible within a rate centre, and so by > >definition impossible to port to a carrier which doesn't operate in that > >rate centre? > > It is my impression that ports are technically possible anywhere > within a LATA, but for business reasons most telcos won't port between > rate centers. > > They're definitely not possible across the country because long > distance calls only do the LNP lookup after routing the call to > the destination tandem. (That's the "L" in LNP.) > > Usually this is because their numbers can't support nomadic 911.
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