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- Newsgroups: comp.sys.apollo
- Path: sparky!uunet!nih-csl.dcrt.nih.gov!helix.nih.gov!rvenable
- From: rvenable@helix.nih.gov (Richard M. Venable)
- Subject: Re: Modem problems
- Message-ID: <1992Nov13.160347@helix.nih.gov>
- Keywords: Modem
- Sender: postman@alw.nih.gov (AMDS Postmaster)
- Reply-To: rvenable@helix.nih.gov (Richard M. Venable)
- Organization: National Institutes of Health
- References: <Bxn9sw.A48@news.cso.uiuc.edu>
- Date: Fri, 13 Nov 1992 21:03:47 GMT
- Lines: 64
-
- In article <Bxn9sw.A48@news.cso.uiuc.edu>, rdg0298@uxa.cso.uiuc.edu
- (Richard Dessenberger ) writes:
- |> I posted a previous article on some problems I was having
- installing a
- |> modem to be used as a dial-in line on our HP 9000,730. Thanks to
- a helpful
- |> hint I now have the getty process checking for activity on the
- modem line.
- |> However, when you try to connect to the modem, it allows you to
- connect, but
- |> then it writes a bunch of garbage to the screen. It says connect,
- but gives
- |> no speed. For example, when one usually connects to a remote host
- vi a modem,
- |> the host usually replies with a CONNECT 2400 or whatever speed
- you are
- |> communicating at. Ours does not give a speed, and the rest of the
- stuff
- |> is a bunch of junk. I am using a Practical Peripherals 2400 baud
- modem, and
- |> have set the modem to check and follow the DCD and DTR signals; as
- discussed
- |> in the HP manuals. I can't figure out why it won't work. Does
- anybody, have
- |> any suggestions ?
- |>
- |> Please send post or send email to
- |>
- |> rich@polypro.me.uiuc.edu
- |>
- |> Richard
-
- The getty process has 'autobaud' capabilities; that is, it assumes a
- default
- line speed, but will switch to the next available line speed setting
- when it
- receives a 'break' signal from the remote terminal. You can set the
- default
- line speed to 2400 baud by specifying it as an argument to getty, e.g.
-
- /etc/getty tty00 2400
-
- Normally, this should be in inittab so that the process is started at
- bootup,
- with the 'respawn' attribute so that getty restarts when a user logs
- out.
-
- Also, on some modems, the message CONNECT (as opposed to CONNECT 2400)
- implies
- a connection at 1200 baud; try sending a 'break' signal, then key a
- {RETURN]
- to see if you get intelligible text in response.
-
- <---------------------------------------------------------------------->
- >
- < Rick Venable (O O) | "Back off, I'm a scientist."
- >
- < FDA/CBER Biophysics Lab )|( | -- Bill Murray in
- >
- < rvenable@helix.nih.gov (=) | 'Ghostbusters'
- >
- <---------------------------------------------------------------------->
- >
-
-