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Technology Stocks : The New QLogic (ANCR) -- Ignore unavailable to you. Want to Upgrade?

To: Greg Hull who wrote (18124)	9/21/1998 6:04:00 PM
From: Greg Hull	Respond to of 29386

From the link George supplied recently: ancor.com I believe it is correct to refer to each of the following as different physical layers. Perhaps lasers and fibers used in WDM (1550 and 1380 nm ?) could be added to this list. The telecom industry has already solved the distance limitation caused by dispersion, but I can believe there are other issues for a low latency network to solve. Can anyone shed any light on this issue? Greg ___________________________________________________________________ Pick a Preference Fibre Channel has been defined to enable systems integrators to select several combinations of speed and distance. Within each media class, the components can be selected to suit the most important objective -- economy or performance. The richness of the standard also raises issues of interoperability, and it is precisely these issues that the Fibre Channel Systems Initiative was formed to address. Single Mode Fibre * 100 MB/s up to 10 km 1062.5 Mbaud Longwave laser * 50 MB/s up to 10 km 531.25 Mbaud Longwave laser * 25 MB/s up to 10 km 265.6 Mbaud Longwave laser 50-Micrometer Multimode Fibre * 25 MB/s up to 2 km 265.6 Mbaud Shortwave laser * 50 MB/s up to 1 km 531.25 Mbaud Shortwave laser 62.5-Micrometer Multimode Fibre * 25 MB/s up to 1 km 265.6 Mbaud Longwave LED * 12.5 MB/s up to 500 m 132.8 Mbaud Longwave LED Video Coax * 100 MB/s up to 25 m 1062.5 Mbaud ECL * 50 MB/s up to 50 m 531.25 Mbaud ECL * 25 MB/s up to 75 m 265.6 Mbaud ECL * 12.5 MB/s up to 100 m 132.8 Mbaud ECL Miniature Coax * 100 MB/s up to 10 m 1062.5 Mbaud ECL * 50 MB/s up to 20 m 531.25 Mbaud ECL * 25 MB/s up to 30 m 265.6 Mbaud ECL * 12.5 MB/s up to 40 m 132.8 Mbaud ECL Twisted Pair * 25 MB/s up to 50 m 265.6 Mbaud ECL * 12.5 MB/s up to 100 m 132.8 Mbaud ECL ___________________________________________________________________