AT&T TL7612 - Manual (Page 21)


Headset base and handset lifter installation
Adjust the height of the lifter arm
Turn the
ADJUST LIFTER knob to change the height of the lifter
arm. When in the raised position, the arm should release the
switch hook so you can hear a dial tone. When lowered, the arm
should hold the switch hook down so that there is no dial tone.
Adjust the switch hook presser position
Turn the knob to move the switch hook presser until it is lined
up with your telephone switch hook.