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000381_news@newsmaster….columbia.edu _Wed Dec 2 14:57:20 1998.msg
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From: fdc@watsun.cc.columbia.edu (Frank da Cruz)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: kermit with PacComm Spirit-2 Packet Controller
Date: 2 Dec 1998 19:57:18 GMT
Organization: Columbia University
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In article <36659086.7D934547@colorado.edu>,
Josh Rigler <jrigler@colorado.edu> wrote:
: I'm trying to use kermit to test a direct (and eventually vi RF) link
: between two PacComm packet controllers, which connect through a standard
: serial port. On one end, I have a Gateway2000 laptop with Linux. I can
: communicate with the packet controller beautifully in "local" mode. On
: the other end I have a Gateway2000 desktop system. I start up kermit,
: connect to the serial port, then I can't send any keyboard commands to
: the packet controller. If I use the packet controller's connect command
: from the first computer (laptop), I can send text messages to the
: terminal on the other side, and they pop up on the screen, like they're
: supposed to. I even tried swapping out the packet controllers, but the
: problem seems to be with the desktop computer, not the controller.
:
: I know this all sounds a little strange, but the gist of my question is
: this. What could possible be the difference between the two systems
: that would affect kermit? The only difference I can find in the two
: kermits is that if I do a "show comm" on the good system, I get this...
:
: Communications Parameters:
: Line: /dev/ttyS1, speed: 9600, mode: local, modem: none
: Terminal bits: 7, parity: none, duplex: full, flow: rts/cts, handshake:
: none
: Carrier: auto, lockfile: /var/lock/LCK..ttyS1
: Escape character: 28 (^\)
:
: Carrier Detect (CD): Off
: Dataset Ready (DSR): On
: Clear To Send (CTS): On
: Ring Indicator (RI): Off
: Data Terminal Ready (DTR): On
: Request To Send (RTS): On
:
: but when I do it on the bad computer, the "Dataset Ready", and "Clear to
: Send" are turned off.
>
That would be the difference. If Clear to Send is off, but RTS/CTS flow
control is selected, Kermit can't send. Probably the cable you are using
on this system lacks a full set of wires. You can work around the problem
by telling Kermit to "set flow none", but it's better to have functional
flow control, so check your cable & connectors.
- Frank