Comtrol SCO OpenServer - Manual (Page 22)

22 Configuring Modems
SCO OpenServer
Configuring Modems
The following procedure describes how to set up a RocketModem for
dial-in and dial-out operations. If you are using another brand of
modem attached to a RocketPort serial port, copy and adapt this
procedure as needed (substituting the setup strings for your modem),
or use the vendor-provided files for your third-party modem. Setup
strings can generally be found in the modem owner’s manual.
1. Verify that UUCP is installed. Your system should contain the
/usr/lib/uucp and /usr/lib/uucp/default directories. If necessary, use
the custom utility to install UUCP.
2. Verify that the serial port you plan to use is recognized by the
system, either by checking /usr/adm/messages for log entries from
previous sessions or by using the hwconfig utility.
3. If using an external modem with a RocketPort, connect the modem
to the serial port, then connect the modem to the phone line.
If using a RocketModem, connect the modem to the phone line.
4. Disable both the modem and non-modem devices. For example, to
disable Board 1, Port 0, enter these commands:
disable ttyr0A
disable ttyr0a
5. Check the /usr/lib/uucp/Devices file for the following entries, and
add them if they are not present:
ACU ttyr0A - 38400 /usr/lib/uucp/dialRCKT
Direct ttyr0a - 38400 direct
There should be two entries for each serial port being used for a
modem. The ACU (Automatic Calling Unit) entry is used when you
start a call, and the Direct entry is used to connect directly with the
modem and issue AT commands manually.
6. To examine the /dev directory and ensure that these devices are
owned by uucp, enter this command:
ls -l /dev/ttyr0[a,A]
The system should respond with a file listing like this:
crw-r--r-- 1 uucp uucp 21,128 Aug 17 17:42 ttyr0A
crw-r--r-- 1 uucp uucp 21,000 Aug 17 17:43 ttyr0a