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Nextel uses IDEN, something that they and only SouthernLinc use in the states. IDEN has the distinction of being able to make calls when the phone shows one bar (in some cases no bars). As of yet, the DC (aka DirectConnect, aka walkie-talkie) is unmatched by any other PTT technology. If you and another Nextel user are in a 6-mile area with no coverage, you can still use DC. The range of the off-network DC varies with location, obstructions, etc. As far as coverage, not the best but not the worst. It is in any major city (at least the ones I would consider going to) and along most highways. Depending where you are, one might have issues on a road trip, but the people that just fly from city to city have noticed no loss in coverage. Sprint is starting to phase out IDEN-only phones, now in favor of hybrid phones that primarily use Sprints CDMA network for voice and Nextels IDEN network for DC and voice where there is no Sprint coverage. IDEN will be shut off by 2010 or 2012, depending on who you believe. Certain building materials block signals, so they have to find ways to provide communication to valuable clients. I'm not even going to try to answer how your building is set up because that is not something that I am familiar with. Hope I've helped, if interested you should take squeaky up on the referral offer, its always nice to save $25. Later.
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