AT&T 3.0 Testing Telephones for Dial Tone, Testing Telephones for Outside Dial Tone, Hang up

Testing the System

5 Hang up.

The control unit should send a ring burst, and the Message light on the 2500 telephone should turn on.

6 Turn off the Message light.

Dial the appropriate feature code.

Testing Telephones for Dial Tone

To test for dial tone, follow the steps below:

1Press an ICOM or SA button (depending on the mode of operation). The red LED next to this button should go on.

2Press the Speaker button.

The green LED next to ICOM or SA button should turn on; you should hear a dial tone, and the green LED next to the Speaker button should turn on.

3Press the Speaker or ICOM or SA button again to disconnect intercom. The green LEDs next to lCOM or SA and Speaker buttons should turn off, and the dial tone should stop. The red LED remains on in some cases.

Testing Telephones for Outside Dial Tone

To test for outside line dial tone, follow the steps below:

1 Without lifting the handset, press one of the outside line buttons.

The red LED next to this button should turn on.

2 Pickup the handset or press the Speaker button.

The green LED next to the line button should turn on, and you should hear a dial tone.

3 Hang up and repeat Steps 1 and 2 for each line button on the telephone.

7–6Initializing and Testing the System