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

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In analog cellular days every phone had an external antenna, this gave the device better range when it was communicating with the cell sites.

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The cellular telecommunications industry is entering a period of transition from aging, analog-era transmission technology to high-speed "third-generation" (3G) mobile networks.

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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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