For Future of Voice masterclasses, go to www.futureofcomms.com.

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April 1, 2004

Giddy up!

A telecom ruminant is digesting the possibility that a 3Kb/sec duplex voice stream is not exactly a demanding broadband application.

That's because bandwidth is not throughput. Throughput is what users value (by definition!). Throughput is "end user valued stuff". Throughput of a "chatty" application depends as much on latency as peak transmission capacity. Which is why geostationary satellite is permanently shafted as a means of delivering top-tier connectivity, unless Einstein is planning a second coming. Useless for gaming, hopeless for voice. It's why FLASH OFDM will constrict the market for CDMA technologies: time to obtain and release transmission channels is small.

Posted by Martin Geddes at 1:44 PM
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