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000127_news@newsmaster….columbia.edu _Thu Jul 31 11:37:29 1997.msg
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From: fdc@watsun.cc.columbia.edu (Frank da Cruz)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: modem problem at 9600
Date: 31 Jul 1997 15:37:22 GMT
Organization: Columbia University
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References: <5rnquu$p3l$3@trotsky.cig.mot.com>
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In article <5rnquu$p3l$3@trotsky.cig.mot.com>,
Robert H. Bradshaw <NOSPAMbradshaw@pcs.mot.com> wrote:
: I am trying to dial into a modem on a very noisy line. I can connect (I get
: login prompt) at 19200 but there is so much garbage on the line that I can
: not enter any commands
:
So evidently your USR does not negotiate an error-corrected connection with
the modem on the other end.
: When I try dialing in at 9600 I cannot connect at all (NO CARRIER).
:
The remote modem's interface speed is probably 19200 bps. If an
error-correction method can't be negotiated, then the remote modem probably
refuses connections at any other speed, since you need an error-correction
protocol in order to have speed buffering.
: I am using a US-Robotics Courier modem at siteA and am trying to connect
: to a Motorola 3265 FastModem at SiteB.
:
So check the configurations of both modems and make sure they both have the
regular list of modulations and error-correction protocols and fallbacks
enabled. Consult the manuals for each modem. Modern modems have a huge
number of options in this area.
If you are using MS-DOS Kermit or C-Kermit or K95 with the USR, using the
provided script (for MS-DOS Kermit) or the built-in DIAL command with "set
modem type usr" (for C-Kermit or K95), it will set up the USR correctly.
In this case, the most likely culprit is the modem on the other end.
- Frank