Bill, If you have a phone that has a “push to talk” option you might be talking directly (with the emphasis on “might”). From what I understand, this service is no longer available/supported (though it might be in some areas, by some carriers, in the US Nextel decommissioned their network last year, in Canada, TELUS Mike is supposed to be available for two more years). And many carriers, even when they offered this service, used the normal cellular communications (including towers and the backhaul network, usually using packet switching (initially, 1xRTT or GPRS, now HSUPA and LTE)) to implement this function. In the olden years, if you had a push-to-talk phone on an iDEN network, you could have a handset that had a direct communication ability (between phones, no towers involved). But if you opted for this solution now, why wouldn’t you just buy a couple of FRS radio for 1/4 of the price (and no on-going service fee to pay).
Marek ______________________________________________________ Message: 4 Date: Wed, 8 Jan 2014 18:07:28 -0500 From: "Rick Brass" <[email protected]> To: <[email protected]> Subject: Re: Stus-List 'My team talks Bluetooth headsets Message-ID: <04d401cf0cc6$67564a40$3602dec0$@net> Content-Type: text/plain; charset="utf-8" The elevator version of the phone call is: Your phone sends a signal to the tower. The signal gets carried to the cell phone company?s server farm (where the NSA listens to it). The server farm resends the message to the cell tower nearest the phone you are calling. The tower sends a signal to the destination cell phone. If you are on the same boat, the signal probably goes back through the same tower to which your phone sent its signal. For Satphone, substitute ?satellite? for the first ?tower?. From: CnC-List [mailto:[email protected]] On Behalf Of Bill Coleman Sent: Wednesday, January 08, 2014 3:14 PM To: [email protected] Subject: Re: Stus-List 'My team talks Bluetooth headsets Well, I understand the need to go through towers, but if you are on the bow and I am in back, and I call you on your phone, are we not talking to each other ? Bill Coleman C&C 39 animated_favicon1
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