Copy the dialrckt.c file to /usr/lib/uucp, Copy the dialrckt. file to /usr/lib/uucp, Table 6. dialrckt country codes – Comtrol SCO OpenServer User Manual
Page 25: Copy the dialrckt.txt file to /usr/lib/uucp/def, Edit the /usr/lib/uucp/makefile, A. find the line that reads

Using Dialers
25
SCO OpenServer
RocketModem: atDialer program
During installation, the following files are installed to use with the
atdialer program supplied by SCO.
cp /comtrol/rckt/dialer/Comtrol_RocketModem /usr/lib/uucp/default/
Comtrol_RocketModem
A symbolic link named Comtrol_RocketModem is added to /usr/lib/
uucp/atdialer:
ln -s /usr/lib/uucp/atdialer /usr/lib/uucp/Comtrol_RocketModem
To use the Comtrol_RocketModem atDialer program, change the fifth
field of the /usr/lib/uucp/Devices file to read:
ACU ttyr0A - 38400 Comtrol_RocketModem
RocketModem: dialRCKT
The dialRCKT files are copied in during driver installation. To set up
dialRCKT to support RocketModem, follow these steps:
1.
Copy the dialRCKT.c file to /usr/lib/uucp:
cp /comtrol/rckt/dialer/dialRCKT.c /usr/lib/uucp/dialRCKT.c
2.
Copy the dialRCKT.
cp /comtrol/rckt/dialer/dialRCKT.<CTRY> /usr/lib/uucp/dialRCKT
where <CTRY> is the code for the country where this modem will
be used. Values are:
3.
Copy the dialRCKT.txt file to /usr/lib/uucp/default:
cp /comtrol/rckt/dialer/dialRCKT.txt /usr/lib/uucp/default/dialRCKT
4.
Edit the /usr/lib/uucp/makefile.
a.
Find the line that reads:
EXES=dialHA96V dialMUL dialTBIT atdialer
Table 6. dialRCKT Country Codes
Code
Country
FRA
France
GER
Germany
ITA
Italy
SWE
Sweden
UKM
United Kingdom
USA
USA/North America