Use the following procedure to manually program modems
attached to the system unit.
- The UNIX-to-UNIX Copy Program (UUCP) must be installed on the
system. Use the lslpp -f | grep bos.net.UUCP command
to verify installation.
- A modem must be attached to the system and powered on.
- Root user authority is needed to change the appropriate files.
- Add the following line to the /etc/uucp/Devices file
if it does not already exist (replace # with the number for your port).
Note: Any
line in the Devices file which begins with a
# sign in the leftmost column is a comment.
- Save and exit the file.
- Type the following command on the command line:
- A connected message should appear on the screen indicating
that the modem is connected and ready to be programmed.
- Type AT and press Enter.
The
modem will respond with
OK. If there is no response
from the modem or if characters typed do not appear on the screen,
check the following:
- Verify modem cabling connections.
- Verify that modem is powered on.
- Observe the modem front panel lights when you press Enter. If
the Receive Data (RD) and Send Data (SD) lights flash, then the modem
is communicating with the system and the problem may lie with the
current modem settings. If the lights do not flash, then the problem
is with the modem connection.
- Type the following and see if the condition changes:
ATE1 <enter>
ATQ0 <enter>
ATE1 turns the echo mode on which displays
any typed characters to the screen. ATQ0 enables the displaying of
result codes.
- Program the modem using the settings shown in the previous
section, "Modem Considerations."
The following example
demonstrates how to program and save basic settings for a Hayes-compatible
modem. Enter:
AT&F <enter>
AT&D2 <enter>
ATS0=1 <enter>
ATS9=12 <enter>
AT&C1 <enter>
AT&W <enter>
~. <enter>
Where &F is
used to reset the modem to factory defaults, &D2 sets
DTR, S0 and S9 set register values, &C1 set
carrier, and &W writes the settings to the modem.
The tilde-period ends the connection.