AT&T Wireless takes high-speed network from coast to coast.AT&T Wireless has deployed its EDGE network across the U.S. and some spots in Puerto Rico Puerto Rico (pwār`tō rē`kō), island (2005 est. pop. 3,917,000), 3,508 sq mi (9,086 sq km), West Indies, c.1,000 mi (1,610 km) SE of Miami, Fla. , Bermuda, and Canada--in 6,500 cities and reaching 215 million people. EDGE, or Enhanced Data GSM (Global System for Mobile Communications) A digital cellular phone technology based on TDMA that is the predominant system in Europe, but also used worldwide. Developed in the 1980s, GSM was first deployed in seven European countries in 1992. Environment, is built on existing GSM/GPRS networks, using the same time-division multiple access (TDMA (Time Division Multiple Access) A satellite and cellular phone technology that interleaves multiple digital signals onto a single high-speed channel. For cellular, TDMA triples the capacity of the original analog method (FDMA). ) frame structure. However, it gives users data rates of 100-130bps, compared to GSM/GPRS speeds of 10-50Kpbs. AT&T Wireless customers will need new equipment to take advantage of the faster speeds. The first handset The part of the telephone that contains the speaker and the microphone. On a desktop phone, the part you hold in your hand is the handset. On a cellphone, the entire phone is the handset. See multihandset cordless and headset. is the Nokia 6200 EDGE phone. More EDGE phones are coming, including Motorola T725 and Nokia 3200. Users can also get a Sony Ericsson For an arrangement of Sony Ericsson products, see list of Sony Ericsson products Sony Ericsson is a joint venture established in 2001 by the Japanese consumer electronics company Sony Corporation and the Swedish telecommunications company Ericsson to make mobile phones. GC-82 modem card to connect laptops. For users traveling outside the EDGE coverage area, the EDGE phone and modem operate at regular GSM/GPRS speeds. For business users, EDGE gives AT&T Wireless a huge edge over the other U.S. GSM/GPRS carriers, T-Mobile and Cingular. No word on how these two plan to compete when it comes to high-speed access. |
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