Appendix A Indicators 123
Reference for Passport 4460 Hardware
Expansion Modules
The indicators for the expansion modules are located on the back panel of each
individual module. Refer to the chart pertaining to each module to check the
definitions of the indicators.
T1/E1 Voice Expansion Modules
The indicator functions for the T1and E1 voice expansion modules are identical.
Refer to the chart below for definitions.
Indicator Status
Definition
Off
No connection
Red - slow flash
Line in loopback or diagnostic mode
Red - fast flash
In Red Alarm state - unit does not see transmission from the
other side (sync loss greater than 2.5 seconds)
Red - solid
Module failed self test diagnostics
Yellow - slow flash
(not defined)
Yellow - fast flash
Remote in Red Alarm and local unit in Yellow Alarm state;
receiving indication from remote side that local unit is seeing
remote, but remote unit cannot see local unit
Yellow - solid
(not defined)
Green - slow flash
(not defined)
Green - fast flash
T1/E1 link up - sensing clock slips
Green - solid
T1/E1 link up - sync acquired
T1
Indicator
E1
Indicator
Summary of Contents for Passport 4460
Page 10: ...10 205677 F Rev 00...
Page 16: ...16 Contents 205677 F Rev 00...
Page 40: ...40 Chapter 1 The Passport 4460 Unit 205677 F Rev 00...
Page 80: ...80 Chapter 3 Expansion Modules 205677 F Rev 00...
Page 94: ...94 Chapter 6 Cables 205677 F Rev 00...
Page 128: ...128 Appendix A Indicators 205677 F Rev 00...
Page 148: ...148 Appendix C Voice Module Specifications 205677 F Rev 00...
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