nanog mailing list archives
Re: And we thought the text part of the Starr Report would be bad
From: Paul Zawada <zawada () ncsa uiuc edu>
Date: Fri, 18 Sep 1998 14:53:17 -0500 (CDT)
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 zawada () ncsa uiuc edu | National Center for Supercomputing Applications +1 630 686 7825 | http://www.ncsa.uiuc.edu/People/zawada
Current thread:
- And we thought the text part of the Starr Report would be bad Christian Nielsen (Sep 18)
- Re: And we thought the text part of the Starr Report would be bad Chris Cappuccio (Sep 18)
- Re: And we thought the text part of the Starr Report would be bad Richard Irving (Sep 18)
- <Possible follow-ups>
- Re: And we thought the text part of the Starr Report would be bad Jerry Scharf (Sep 18)
- Re: And we thought the text part of the Starr Report would be bad Paul Zawada (Sep 18)
- Re: And we thought the text part of the Starr Report would be bad David Stoddard (Sep 18)
- Re: And we thought the text part of the Starr Report would be bad Miquel van Smoorenburg (Sep 21)
- Re: And we thought the text part of the Starr Report would be bad David Stoddard (Sep 22)
- Re: And we thought the text part of the Starr Report would be bad John Leong (Sep 22)
- Re: And we thought the text part of the Starr Report would be bad Robert Szarka (Sep 22)
- Message not available
- Re: And we thought the text part of the Starr Report would be bad Jay R. Ashworth (Sep 23)
- Re: And we thought the text part of the Starr Report would be bad Paul Zawada (Sep 18)