Dear Netland,
Here is the much requested summary on how to set up a modem for
dialing into a 2100. The following information has been extracted
from my documentation of my system. During the process of getting
this thing working, I was told by DEC that the hayes modems are not
supported from osf/1, but they can be used if we create our own
gettydefs and inittab entries. I have include those here and wish to
thank Joe Gerber for sending this information to me. Steve Madsen
originally wrote the posting that Joe sent and it is one of the best
explanations of setting up a modem that I have seen. I wish Steve was
writing the DEC manuals 8-).
Despite the information I have included below, the system will not
automatically drop the line when the user hangs up. The user will
have to send three plus signs to signal the modem to hang up. You
will then have to issue the ath0 command to drop the line. We also
noticed that if you read the stty man pages, the decmodem v32 will
drop the line. If anyone knows for sure how to fix these things,
please pass them along. I hope this helps someone.
Cheers, Keith
Decmodem v32 setup instructions:
Begin by adding the following line to the gettydefs file:
dialin# B19200 HUPCL CS8 # B19200 HUPCL CS8 #login: #dialin
Then add the following line to the /etc/inittab file:
dec:23:respawn:/usr/sbin/getty ttyd0 19200 dialin
The DECmodem V32 defaults into the Digital Modem Control Language. To
change it for Asynchronous AT Hayes command set, turn on the first
switch of the first switch set (SW 1-1).
ATQ1 Will put the modem into the quiet mode. Without this, the
connect information will cause the line to drop upon connection.
AT&D3 Resets the modem after the loss of EIA-DTR. This is supposed
to make the line drop when the user loggs off.
AT&C1 Tells the modem to have the modem follow the carrier from the
remote unit.
At&S1 Allows controlled data set ready.
AT&S0=1 Will set the modem to answer on the first ring.
AT&W Forces settings into memory and makes them permanent.
AT&V Register Dump which produces useless information.
Received on Fri Feb 03 1995 - 20:27:49 NZDT