topic Re: modem connection problem in Operating System - Linux

modem connection problem

bong_3 — Tue, 18 May 2004 01:27:40 GMT

Need some advise on my modem connection to linux.

my aim is to connect remotely to a RHLinux7.3 Server thru Hyperterminal.

1st set my modem to "auto-answer"
ATE0Q1&D2&C1S0=1
AT&W0

2nd set my linux inittab
T1:23:respawn:/sbin/agetty -w -I 'ATE0Q1&D2&C1S0=1' 57600 ttyS0

when i test dial-up, the modem response but
shows me a bad characters ""Ã°"Ã°f'hI,M, -1 1 rNHzY,-( ( (( .z"
instead of "login:"

had i miss out anything or do i need to perform some configuration?
this setting use to be working on my RH6.2 machine.

appreciate any advise..

thx,

Re: modem connection problem

Stuart Browne — Tue, 18 May 2004 01:34:15 GMT

baud-rate mis-match.

Re: modem connection problem

Vernon Brown_4 — Tue, 18 May 2004 06:55:24 GMT

Sometimes you can hit the Enter key a few times to sync the baud rates. Most modems now will automatically negotiate the best baud rate.

Vern

Re: modem connection problem

Mark Grant — Tue, 18 May 2004 07:37:49 GMT

Could be baud rate but it could also be parity/data bit settings. The "-m" option attempts to deduce the correct baud but it is still suggested you have a comma separated list of baud rates on the command line too.

Also, try it without an /etc/issue file because this is always output with 7 data bits and space parity.

You might also check that the serial port is set to the correct configuration with "setserial". There's no point in your modems communicating in a particular way if the serial port can't.

Personally, I'd attempt to do it without the modem initialization string too, just to see if this is an issue.

Just some things to try.