Gurian points to the company's CDMA mobile-phone technology, which is making progress at building market share in Europe, where rival GSM technology is still dominant.

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It's also considered stronger, brand-wise, and has more products that use GSM, the most popular mobile technology globally.

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By comparison to analog and GSM-based technologies, 3G CDMA technology has advantages such as increased network capacity, network flexibility, compatibility with internet protocols, higher capacity for data and faster access to Internet.

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Carriers using the GSM standard turned to TruePosition after the government mandated location technology for 911 calls and they were unable to achieve the accuracy they needed with a competing system developed by Ericsson and others.

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Carriers using the GSM standard turned to TruePosition after the government mandated location technology for 911 calls and they were unable to achieve the accuracy they needed with a competing system developed by Ericsson and others, Salen said.

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The new technique may serve as a wake-up call for mobile carriers, which have long been in denial about the vulnerabilities of GSM security, says Bruce Schneier, encryption guru and chief technology officer of BT Counterpane.

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In terms of cellular access technology, U.S. carriers can be divided into two basic camps: CDMA and GSM.

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