All Phones Are Dead (No Dial Tone Or Lights) - AT&T MERLIN LEGEND Release 3.1 System Manager's Manual

All Phones Are Dead (No Dial Tone or Lights)

NOTES:
1. If power to the system is cut off, the system retains its programming for 4 to
5 days after it stops receiving power. Then all of the system's programmed
settings may return to the factory settings.
2. Be sure to change the system time appropriately when Daylight Savings
Time starts and when it ends. System time affects the functioning of several
system features, including Automatic Backup, Night Service, Station
Message Detail Recording (SMDR) reports, standalone auto attendant
systems, voice mail, and Reminder Service.
3. For information about removing the control unit housing, see Appendix E.
All Phones Are Dead
(No Dial Tone or Lights)
Possible Cause 1: The control unit is not receiving power.
!
WARNING:
To check the power cord on the control unit as instructed in the following
procedure, avoid standing on a box or chair to reach the unit if it is out of
easy reach. If you do not have a stable ladder or other proper equipment,
do not proceed; wait for the AT&T technician.
What to do: Make sure the control unit's power cord is plugged securely into the
wall outlet. Also, if convenient and safe to do so, make sure the other end of the
power cord is securely connected to the power supply in the control unit.
If all phones now have dial tone and lights, you have solved the problem.
If all phones are still dead, go to Possible Cause 2.
Possible Cause 2: The power outlet to which the control unit is plugged in is
faulty.
What to do: Test the outlet by plugging in an appliance that you know is
working, for example, a lamp or radio.
If the appliance does not work, the outlet is faulty. If possible, plug the
control unit into a different outlet. Check the circuit breaker or call an
electrician.
If the appliance works, the wiring may be faulty elsewhere in the system.
Call the AT&T Helpline at 1 800 628-2888.
8–2
Troubleshooting the System