Cisco 3526 Specifications download pdf (Page 20)

1-4

PA-MC-2T3+ Multi-Channel T3 Port Adapter Installation and Configuration

OL-3526-05

Chapter 1 Overview

LEDs

Note The PA-MC-2T3+ does not support configuration of the far end T3 DSU using the maintenance data link

channel in c-bit parity framing.

LEDs

The PA-MC-2T3+ has seven status LEDs located on its faceplate: ENABLED, ALARM, LOOP, LOS,

OOF, AIS, and FERF. (These status LEDs are shown from left to right in Figure 1-2.)

Figure 1-2 PA-MC-2T3+ Status LEDs—Partial Horizontal View

After system initialization, the green ENABLED LED indicates that the port adapter is enabled for

operation.

The following conditions must be met before the PA-MC-2T3+ is enabled:

• The port adapter is correctly installed in the VIP motherboard or Cisco 7200 series router slot and

is receiving power.

• The system software recognizes the PA-MC-2T3+

If either one of the preceding conditions is not met, or if the initialization fails for other reasons, the

enabled LED does not go on.

Table 1-3 lists LED colors and indications.

22649

OOF

FERF

LOOP

ALRM

ENABLED

LOS

AIS

Table 1-3 PA-MC-2T3+ LEDs

LED Label Color State Meaning

ALARM Yellow On T1 loss of frame (LOF)

T1 alarm indication signal (AIS)

T3 loss of signal (LOS)

T3 alarm indication signal (AIS)

T3 out of frame (OOF)

T3 far-end received failure (FERF)

LOOP Yellow On T1 line or T3 link in a loopback state; not enabled for normal

data traffic

LOS Yellow On T3 link loss of the received signal.

Operates in conjunction with ALARM LED.

AIS Yellow On T3 link receives alarm indication signal.

Operates in conjunction with the ALARM LED.

OOF Yellow On Indicates a DS3 out-of-frame (OOF) condition. Operates in

conjunction with the ALARM LED.

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