Specifications

Channelized and Electrical Interface Line Card Installation and Configuration

78-16417-02

Verifying and Troubleshooting the Line Card Installation

6-Port and 12-Port E3 Line Card LED

See Figure 9 for the location of the status LED on the 6-port and 12-port E3 line card. The different

operating states of the status LED are shown in Table 21.

Alphanumeric LEDs

channelized and electrical interface line cards have two four-digit alphanumeric LED displays at one end

of the faceplate, near the ejector lever, that display a sequence of messages indicating the state of the

card. In general, the LEDs do not turn on until the RP recognizes and powers up the card. As it boots,

the line card displays a sequence of messages similar to those in Table 22.

Note It is normal for some displayed messages to appear too briefly to be read. Also, some messages listed in

Table 22 and Table 23 may not appear on your line card.

Table 20 6-Port and 12-Port DS3 Line Card Status LED Descriptions

LED State Color/Activity Description

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 alarm.

LOOP

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

Table 21 6-Port and 12-Port E3 Line Card Status LED Descriptions