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Mobile working Toolkit

Wi-Fi phone promises seamless switching

Ben Charny CNET News.com

Published: 27 Jul 2004 08:50 BST

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Handset maker Motorola on Monday introduced a new phone that it says will switch calls seamlessly between cellular services and wireless Internet networks, potentially offering business customers big savings if the technology works as promised.

A representative said the CN620 Wi-Fi cell phone is expected to be commercially available by fall or early 2005, making it among the first entries in a new class of mobile communications devices that promise to stir up the cellular industry by reducing the number of minutes billed to customers.

The phone has been in the works since last year, when Motorola struck a deal to use chips from Texas Instruments designed for the purpose.

Motorola, Hewlett-Packard and NEC have all announced products that promise to let business customers move calls from cellular carriers to their own networks using short range wireless technology known as Wi-Fi. Once on the corporate network, callers are connected using voice over Internet Protocol (VoIP), a fast growing technology that's already shaking up the wired telephone industry by bypassing much of the traditional network and its many layers of fees.

Support from carriers for hybrid Wi-Fi cellular phones so far has been less than enthusiastic. Among the many challenges facing such devices is how to ensure customers are billed properly as devices move between different types of networks, analysts say.

Motorola has not yet struck a deal with a carrier to support the CN620. Because the phone uses the GSM cell phone standard -- the most popular in the world -- US GSM carriers AT&T Wireless, Cingular Wireless and T-Mobile USA are probable candidates to sell the phone.

Despite the challenges, such hybrid devices do provide a tantalising view of the future. Armed with the appropriate software, such gadgets could eventually use a home's Wi-Fi access point to make phone calls using the Internet -- technology known as voice over Internet Protocol, or VoIP -- rather than a traditional home phone line.

Wi-Fi phone proponents say the combination makes sense. Wi-Fi is fast, has a 300-foot range and can be used for downloading large amounts of information. Meanwhile, cellular networks stretch for hundreds of miles but can usually only manage download speeds of about 50 kilobits per second to 500kbps.

CNET News.com's Evan Hansen contributed to this report.

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  1. Is there any providers of just Wi-Fi phones withou... oscar bazoberry

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