[3909] in linux-net channel archive
Re: CSU/DSU's, async RS-232, and PPP. How?
daemon@ATHENA.MIT.EDU (Tim 'The Unslept' Sailer)
Tue Jul 30 13:51:51 1996
To: submit-linux-dev-net@ratatosk.yggdrasil.com
From: sailer@sun10.sep.bnl.gov (Tim 'The Unslept' Sailer)
Date: 30 Jul 1996 16:39:10 GMT
Kevin D. McCormick (fbyte@sub-zero.mit.edu) wrote:
: I've looked through the HOWTOs and FAQs, yet I can't find a confirmation
: that what I want to do here actually works. Can someone let me know if
: I'm on the right track?
: I am setting up a number of dedicated 56k lines. One of the major
: constraints on this project is per-line cost, so we have chosen to use
: CSU/DSU's with an asynchronous interface that will hang off a standard
: (well, 16550A) serial port on a 486DX/4-120 running Linux. Synchronous
: interfaces (especially v.35 interfaces) cost more than we want to spend.
: Maybe.
[clip]
: BUT, if there exsits somewhere a cheap, low-speed v.35 interface we could
: buy, then we could use a $199 CSU/DSU that has a v.35 interface only,
: saving us about $400 in the CSU/DSU department, plus we would have a real
: synchronous interface. But the cheapest v.35 cards I've seen are $500
: each, and handle around 10 Mbps, which is insanely excessive for 56k lines.
: By the way, the CSU/DSU's we picked are made by Bat Electronics, model
: 5696, if I remember, for something like $398. Does anyone have any
: good/bad comments about these boxes (or maybe suggestions for something
: cheaper...) ?
Well, I run a small business at home on a 56k line, which is connected
to our homemade route with a SDL n2dds card... V35 with a builtin
csu/dsu/dds. Cost about $650.
Tim
--
sailer@sun10.sep.bnl.gov
"You may be right, I may be crazy"
Billy Joel
** Disclaimer: My views/comments/beliefs, as strange as they are, are my own.**
