Testing The System - AT&T MERLIN 410 Service Manual

7. If any voice terminal fails any test:
Verify that dial tone is present at the network interface by plugging in a standard
telephone with a modular cord/plug (if available).
Warning:
Verify that the control unit power cord is plugged in.
Verify that all connections are secure and correct.
Verify that cords are undamaged where they are attached to the wall or baseboard.
If there is trouble and you are unable to find the cause, call the HELP number (1-
800-628-2888).
8. If you have set aside any defective voice terminals, see the "Maintenance Exchange
Procedures" section of this manual for obtaining replacements.

TESTING THE SYSTEM

Testing of the system should be done after all system components have been installed.
1. Go to one of the voice terminals and call a number outside the system. To do this:
Pick up the handset and listen for dial tone; the green light should go on.
Dial the number.
When the call is answered, tell the person you are placing the call on hold. To do this:
2.
Touch the HOLD button (Figure 19). The green light next to the line button should
"flutter" – go on and off rapidly.
A MERLIN communications system voice terminal will not
work for this test.
Figure 19
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