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62
C
HAPTER
2: I
NSTALLING
S
YSTEM
H
ARDWARE
C
OMPONENTS
■
Always disconnect a device from its power source before you clean it.
If your SuperStack 3 NBX Call Processor is equipped with a redundant
power supply, you must disconnect both power cords.
■
CAUTION:
Each of the two power supply units in the redundant
model has its own overcurrent protection device which operates
independently. That is, the overcurrent device for one power supply
does not protect the second power supply. You must connect both AC
power cords to the redundant model to provide power to both of the
power supplies.
■
Do not disassemble components of the system. If you suspect that a
card, chassis, or telephone is defective, call a service representative.
■
Do not use this product near water. Do
not
install the call processor,
the chassis, or a telephone in a damp area, such as a basement.
■
Never cover or block the ventilation holes on the chassis or
telephones. Proper ventilation is required to ensure normal operation
of each component and to avoid component failures.
■
WARNING:
Never push objects into ventilation holes on the chassis or
telephone. Electrical voltages in system components can cause bodily
harm.
■
Do not use the telephone during an electrical storm. Lightning poses
a remote risk of electric shock through any telephone system.
■
Never use a telephone that is near the source of a gas leak to report
the leak.
■
Both the NBX 100 and the SuperStack 3 NBX Call Processors are
equipped with a three-prong grounding plug. Do not defeat the
protection offered by the plug by clipping the grounding prong or by
using an adapter to connect the system to a two-wire power source.
■
Do not staple the NBX power cord or otherwise attach it to building
surfaces.
■
Do not use any AC power converter on a 3Com Basic Telephone,
Business Telephone, or Attendant Console other than the one that is
shipped with the device. On the Model 3102 Business Telephone and
Model 3101 Basic Telephone, the power converter is an optional
component.
■
Power Cord Set:
■
For European countries, see
Table 6
. If your country is not listed
specifically, use the power cord set information for Europe.
Summary of Contents for 3C10111C - NBX 100 - Modular Exp Base
Page 20: ...20 ABOUT THIS GUIDE ...
Page 102: ...102 CHAPTER 2 INSTALLING SYSTEM HARDWARE COMPONENTS ...
Page 122: ...122 CHAPTER 4 ANALOG LINE CARDS ...
Page 132: ...132 CHAPTER 5 ANALOG DEVICES ...
Page 138: ...138 CHAPTER 6 BRI ST DIGITAL LINE CARD ...
Page 144: ...144 CHAPTER 7 E1 ISDN PRI DIGITAL LINE CARD ...
Page 150: ...150 CHAPTER 8 T1 DIGITAL LINE CARD ...
Page 184: ...184 APPENDIX A SPECIFICATIONS ...
Page 190: ...190 APPENDIX B CIRCUIT PROVISIONING ...
Page 206: ...206 INDEX ...