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122 Appendix A Indicators
205677-F Rev 00
The chart below describes the indicator functions.
Indicator
Definition
D (D-channel; 16 KB
Management Channel)
Lights when the unit is using the D-channel
DD (Data Detect)
Lights when the ISDN BRI interface detects connection to
an external switch device
B1 (B-channel #1; 64 KB
Data Channel)
Lights when the unit is using B-channel #1
B2 (B-channel #2; 64 KB
Data Channel)
Lights when the unit is using B-channel #2
Note:
During diagnostic testing, the ISDN BRI (U Interface) Adapter
Module indicators blink on and off. However, they do not indicate data
transfer until you have configured and enabled ISDN software services.
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...
Page 151: ......