AT&T MERLIN LEGEND Installation & Maintenance Manual page 184

Installation
7. Unplug the modem from the wall outlet; then plug it back in.
Set switch 1, bit 2 to the left. This stores the switch settings in
the modem's memory, and the modem is now operating in the
AT command protocol.
Enter command mode, set the options, and save the options
8.
into protected memory to prevent loss of settings in case of a
power failure:
Type "AT" and press Enter to enter the local mode.
Type "AT&D2" and press Enter. Option set: drop call when
DTR low.
Type "AT&C1" and press Enter. Option set: data carrier
detect follow call.
Type "ATS0=1" and press Enter. Option set: Auto Answer.
Type "ATQ1" and press Enter. Option set: disable result
codes.
Type "AT&W" and press Enter to write options to protected
memory.
3-76 Data Adapters