Cisco WS-C4003-RF Hardware Maintenance Manual - Page 92

CT1 Network Processor Module LED Indicators

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LOOPBACK LOCAL ALARM REMOTE ALARM H3155 Reading Network Processor Module LED Indicators CT1 Network Processor Module LED Indicators The three LEDs on the CT1 network processor module are labeled loopback, local alarm, and remote alarm. (See Figure 4-15.) Figure 4-15 Channelized T1 Network Interface Processor cT1 / PRI DB-15 female The three LEDs on the CT1 front panel indicate the following: • Loopback-Indicates controller local loopback. • Local alarm-Indicates a loss of signal, a loss of frame, or unavailability because of excessive errors. • Remote alarm-Indicates a remote alarm is received from the remote end because of a local alarm at the remote end. 4-12 Cisco 4000 Series Hardware Installation and Maintenance

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4-12
Cisco 4000 Series Hardware Installation and Maintenance
Reading Network Processor Module LED Indicators
CT1 Network Processor Module LED Indicators
The three LEDs on the CT1 network processor module are labeled loopback, local alarm, and remote
alarm. (See Figure 4-15.)
Figure 4-15
Channelized T1 Network Interface Processor
The three LEDs on the CT1 front panel indicate the following:
•
Loopback—Indicates controller local loopback.
•
Local alarm—Indicates a loss of signal, a loss of frame, or unavailability because of excessive
errors.
•
Remote alarm—Indicates a remote alarm is received from the remote end because of a local
alarm at the remote end.
H3155
cT1 / PRI
LOOPBACK
LOCAL ALARM
REMOTE ALARM
DB-15
female