IBM 6C1 Service Manual page 365

ripo: send "AT&F1Q0T\r"
ignore "0\r" or "OK\r\n" timeout 2 # Ignore modem response.
send "ATE0T\r"
expect "0\r" or "OK\r\n" timeout 2 # Enable responses (Numeric),
send "ATQ0V0X0T\r"
expect "0\r" timeout 2
send "ATS0=0\r"
expect "0\r" timeout 2
send "AT&C1&D2&R1\r"
expect "0\r" timeout 2
done
error:
expect "8\r" or "7\r" or "6\r" or "4\r" or "3\r"
delay 2
done
# Reset modem. Select profile 1
# Initialize modem: Echo OFF,
# Limit response codes.
# Confirm commands successful.
# Set AutoAnswer OFF
# Confirm command successful.
# Detect carrier and DTR,
# Ignore RTS.
# Confirm command successful.
# RI Power On enabled.
# Handle unexpected modem
# responses.
Appendix D. Modem Configurations
347