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To: Bryon Bothun who wrote (9727)	7/2/1999 5:24:00 PM
From: Duane E. Werth	Respond to of 10479

Bryon, I'm not the greatest Techy, but I know a little about DataComm. Starting at the lowest rung on the DataComm ladder you have 64Kb/s also referred to as 56Kb/s. ISDN uses 2 64Kb/s channels and one 16Kb/s channel for "signaling". In simplest forms, T-1 is made up of 24 channels of 64Kb/s each. In DataComm terms any portion of the T-1 usage is referred to as "Fractional T-1". So you can have access of from 64K to 1.536Mb/s throughput. T-3 is three times what T-1 is at 4.6Mb/s. OC designations refer to Optical Communications used in the SONET protocol sponsored by the Government. So here's the chart: T-1 1.54Mb/s T-3 4.6Mb/s OC-3 155Mb/s OC-12 622Mb/s OC-48 2.4Gb/s When we talk about 300 channels of OC-48, you're talking about a "load" of data. Hope this answers the question, and I'm sorry I didn't see your question until today. Have a great weekend. DEW