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To: Sarmad Y. Hermiz who wrote (52557)	4/24/1999 6:53:00 PM
From: Glenn D. Rudolph	Respond to of 164684

Level 3, Nextlink, Qwest and other NexGen carriers are laying pipe at incredible rates. Nextlink, for instance, is pulling as many as 688 fiber strands along a given path. Each strand lit is running as fast as SONET OC-192. That's 10 Gbps, or enough to handle roughly 130,000 uncompressed voice transmissions. These same carriers are opening as many as 4 windows, i.e., light frequencies, on the fiber. That's 40 Gbps per strand, or enough to handle over 500,000 voice conversations. And the ITU-T has standardized on 32 windows. If they compress the voice transmissions and run it over the IP protocol, with ATM in the backbone (some are, and more will), you can multiply the voice conversations by a factor of 10 or so, with no real loss of quality. Toll-quality voice for free? Maybe not "free," but very close to it. Need more information on how all these network technologies work and where they're headed? Check out Ray Horak at the Network World Technical Seminar "Essentials of Network Technologies" now in its fifth season. nww3.com