North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: And we thought the text part of the Starr Report would be bad
On Fri, 18 Sep 1998, Jerry Scharf wrote: > > The standard T1 connection of an Internet service provider handles a > > maximum of 53 dialup connections pumping data to a user, he said, but a > > 54th user could cause a major problem." > > > > The number of dialups on a T1, the number of bytes in a framed ATM cell. > I see a telco conspiracy here. (:-) for the humor impaied) It could be a conspiracy, or it could be they multiplied 28.8 kbps times 53 and 54... :-) It took me a few minutes to figure out how they came up with those numbers as well.. They used the wrong figure for a T1 though.. You can only fit 1.536 Mbps of real data down a T1 unless you've figured out a funky way to send it across using the framing bits. 8 b per channel * 24 channels per frame * 8000 frames per s = 1536000 bps 28.8 kbps * 53 = 1.526 Mbps 28.8 kbps * 54 = 1.555 Mbps So technically they should have used the numbers 52 and 53. :-) --zawada Paul J. Zawada, RCDD | Senior Network Engineer [email protected] | National Center for Supercomputing Applications +1 630 686 7825 | http://www.ncsa.uiuc.edu/People/zawada
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