ATM 1-Port 622 Mb/s MMF Line Card DAGGL-CA

This document provides critical information for the Digital ATM 1-Port 622 Mb/s MMF Line Card (DAGGL-CA), a SONET/SDH ATM line card designed for single multimode fiber (MMF) port operation using an OC-12 (622 Mb/s) link. It supports ATM cell-forwarding functions and requires MMF cables adhering to EIA/TIA 492-AAAA specifications (62.5/125 µm, SC connector, 0-500m, 0-6 dB loss).

The document details essential operational procedures, starting with firmware requirements, mandating a minimum V2.0 for the line card and V1.74 for the CMM, and stressing that all line cards within a switch must have consistent firmware revisions. Installation instructions refer to the system's service manual but specifically emphasize installing the correct DC-to-DC power module first: DAGPL-AB for 48V systems or DAGPL-AA for 5V systems, with warnings against incorrect module usage.

A major section is dedicated to troubleshooting and diagnostics via the module's Light-Emitting Diodes (LEDs). It explains the meanings of the Module, Link, Information, Port Status, and FRU LEDs, covering states like system initialization, firmware load progress, self-test success or failure (including specific diagnostic codes for various hardware faults), and link status (testing, active connection, errors, remote end identification). Procedures for performing both single-port and two-port fiber-optic loopback tests are also included, along with instructions for physically installing and removing the DC-to-DC power modules.