Specifications

34
Channelized and Electrical Interface Line Card Installation and Configuration
78-16417-02
Verifying and Troubleshooting the Line Card Installation
6-Port Channelized T3 (T1) Line Card LED
See Figure 7 for the location of the status LED on the 6-port channelized T3 (T1) line card. The different
operating states of the status LED are shown in Table 19.
6-Port and 12-Port DS3 Line Card LED
See Figure 8 for the location of the status LED on the 6-port and 12-port DS3 line card. The different
operating states of the status LED are shown in Table 20.
Table 18 2-Port Channelized OC-3/STM-1 (DS1/E1) Line Card Status LED Descriptions
LED Color/Activity Description
ACTIVE
Off
Solid green
Port is administratively down, or diagnostics are running.
Port is administratively up.
CARRIER
1
Off
Blinking green
Solid green
Port is up, but is detecting local alarm or is waiting for receive
framing.
Port is up, but is receiving remote alarm.
Port is up, and receive framing was found.
1. Only Section and Line alarms in SONET operation (or regenerator section [RS] or multiplex section [MS] alarms in SDH)
affect the Carrier LED; path alarms (higher and lower) are ignored.
Table 19 6-Port Channelized T3 (T1) Line Card Status LED Descriptions
LED State Color/Activity Description
CDHNT and CD
Both yellow and green are lit Power-on self test
DOWN
None Port is administratively down.
CDHNT (carrier detect hunt)
Blinking green Port is up and waiting for receive framing.
CD (carrier detected)
Solid green Port is up, and receive framing was found.
RA (remote alarm)
Solid yellow Port is up, but receiving remote alarm.
LA (local alarm)
Blinking yellow Port is up, but detecting a local T3 alarm.
LOOP
1
Alternating green and yellow Port is in loopback mode.
1. When a port is in any loopback mode, except remote loopback, the port status LED alternates between green and yellow