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- Path: news.mindspring.com!usenet
- From: cewyatt@cew.com (C. E. Wyatt)
- Newsgroups: comp.dcom.modems,comp.dcom.telecom.tech
- Subject: Re: Slower modem connections thru T1/channel bank
- Followup-To: comp.dcom.modems,comp.dcom.telecom.tech
- Date: 21 Feb 1996 15:38:11 GMT
- Organization: MindSpring Enterprises
- Message-ID: <4gfe93$4nq@brickbat.mindspring.com>
- References: <4g5rcc$5gr@mercury.IntNet.net> <4ge6sd$65f@eri.erinet.com>
- Reply-To: cewyatt@cew.com
- NNTP-Posting-Host: cewyatt.mindspring.com
- X-Newsreader: NeoLogic News for OS/2 [version: 4.5 YK Beta]
-
- Tim Moloney (moloney@netsrq.com) wrote:
- --: I'm a small ISP and I recently converted my dial-in lines from individual
- B1
- --: lines to a T1 broken out by a Carrier Access Corp AB-24 channel bank. The
- --: typical modem connect speed before the conversion was 24000 to 26400. Now
- --: the typical connect speed is 21600 to 24000. I've also had a few
- customers
- --: report drastically reduces connect speeds. These customers report 9600 to
- --: 14400.
- --: Apparently the T1 is causing some sort of slowdown in the modem
- connections.
- --: I would think that the T1 would provide a cleaner connection and thus
- higher
- --: connect speed.
-
- The ISP I use has also been bitten by the dreaded "channel bank" problem.
- After rigorous testing with BellSouth (the local RBOC) and US Robotics (the
- ISP uses USR Total Control racks), it was finally determined that the channel
- banks are somehow inducing some digital "noise" which thereby limits the
- connect speed. As a test, the RBOC put in one T1 line direct off of the
- switch to a TC rack and connects on that are running excellent, with a lot of
- people getting consistant 28.8, 31.2 and 33.6 connection rates. Of course,
- the straight T1 is a LOT more expensive than the ones coming from the channel
- banks, which are a curse to society, IMHO.
-
-
-
- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-
- "Imagine there's no heaven. It isn't hard to do. No Hell below
- us. No religion, too."
-
- -- John Lennon
-
- Would all Pat Buchanan supporters please line up against the wall
- in single file. It's much easier to execute you that way. Thank you.
-
- ********
-
- C. E. Wyatt
- Atlanta, Georgia
- cewyatt@cew.com
- http://www.cew.com/~cewyatt
-
-
-