AT&T MERLIN LEGEND Installation & Maintenance Manual page 227

Installation
The green LED next to the red LED on the intercom or System
Access button should go on, you should hear an intercom
dial tone, and the green LED next to the Speaker button
should go on.
3. Press the Speaker button again to disconnect the Intercom or
System Access button.
The red and green LEDs next to the Intercom or System
Access button should go off, the green LED next to the
Speaker button should go off and the dial tone should
stop.
Test the Telephones for Outside Line
Dial Tone
Follow these steps to test for an outside line dial tone:
1. Without lifting the handset, press a line button.
The red LED next to this button should go on.
2. Pick up the handset or press the Speaker button.
The green LED next to the red LED at the line button should
go on, and you should hear a dial tone.
3. Hang up as needed and repeat steps 1 and 2 for each line
button on the telephone.
Test the Analog Multiline and Single-
Line Telephones
Follow these steps to test the basic functioning of analog
telephones:
1. If you are at a multiline telephone, press the Intercom or
System Access button.
Pick up the handset.
2.
You should hear a dial tone.
System Acceptance Test 3-119