Appendix F: Using the LineStatus Utility
iSPAN PRI PCI ISDN Users Guide
111
Alarm LEDs
The following alarm LEDs indicate connection problems that
result from line failures:
LED
Meaning
LOS
Loss of Signal. Typically appears when no electrical signal is
detected. (check if line is plugged on the adapter and on the
network interface).
LOF
Loss of Frame (also known as
Red Alarm
) appears when many
frames are lost because of framing errors. The terminal is unable
to synchronize on the DS1 signal.
AIS
Alarm Indication Signal (also known as
Blue Alarm
).
Transmitted instead of the normal signal to maintain
transmission continuity. Also indicates to the receiving
equipment that a transmission interruption occurred either at the
equipment originating the AIS signal, or upstream of the
originating equipment.
RAI
Remote Alarm Indication (also known as
Yellow Alarm
).
Transmitted in the outgoing direction when a terminal
determines that it has lost the incoming signal.
Summary of Contents for iSPAN 5535 PRI
Page 16: ...vi Interphase Corporation ...
Page 70: ...Removing the Drivers 50 Interphase Corporation ...
Page 82: ...Setting Up ISDN PRI Port Properties 62 Interphase Corporation ...
Page 86: ...Determining RAS Support Parameters 66 Interphase Corporation ...
Page 96: ...Problems and Possible Solutions 76 Interphase Corporation ...
Page 120: ...Routing and Remote Access Service 100 Interphase Corporation ...
Page 128: ...Setting Port and Clock Modes 108 Interphase Corporation ...
Page 134: ...Interpreting LineStatus Indicators 114 Interphase Corporation ...
Page 162: ...Glossary 142 Interphase Corporation ...
Page 167: ...iSPAN PRI PCI ISDN Users Guide 147 B channels 84 D channel 82 layer 1 alarms 85 ...
Page 168: ...148 Interphase Corporation ...