Furthermore digital cellular handset prices have plunged, and many cellular carriers offer paging along with phone service.

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Now that SMS is taking off, a new data-service wireless-application protocol, or WAP, is taking hold for digital cellular networks.

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Some commonly used digital cellular telephones are designed with encryption capabilities and must be certified by the Federal Security Service.

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Much of Motorola's pounding by Wall Street and the media came down to its lethargy in introducing a digital cellular phone.

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Ibiquity's business plan is modeled after wildly profitable licensing firms such as Qualcomm (for digital cellular)and Gemstar (for onscreen TV guides).

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But as you go down, take the mobile communications market -- you have digital cellular phones, cordless, pagers, all sorts of PDAs.

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Much of Motorola's pounding by Wall Street and the media these last few years came down to its lethargy in introducing a digital cellular phone.

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In 1993, NTT DoCoMo, Japan's principal mobile-phone carrier, opted for a technical standard called Personal Digital Cellular (PDC), which was incompatible with the Global System for Mobile Communications (GSM), the standard adopted by most of the rest of the world.

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An internal retractable modem will enable a user to connect with some of the most popular wireless networks today, including Motient's DataTAC, BellSouth's Mobitex and CDPD (Cellular Digital Packet Data).

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Qualcomm started out making satellite-based tracking systems for trucking companies, but Irwin had far bigger plans:selling the world on a new digital way to connect cellular calls and carry 40 times as much traffic as the old analog systems then in place.

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And it has been slow to replace analog cellular phones with more popular digital models.

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The firm's well-off consumers are becoming ever more interested in buying other (digital) electronic gizmos, such as personal computers and cellular telephones.

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Economides said the agency had the opportunity to make the wrong choice back in the 1990s, when cellular carriers were bidding on spectrum for new digital systems and had to decide among the GSM, TDMA and CDMA standards.

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