Alcatel Lucent 3AL00424AA Interface Card

The Alcatel Lucent 3AL00424AA is a line termination interface card used in access network platforms such as DSLAMs and multi‑service access nodes (MSANs). This card provides the physical interface between the central office equipment and subscriber copper loops, handling both digital subscriber line (DSL) and plain old telephone service (POTS) signals. It is a critical component for delivering high‑speed internet, VoIP, and IPTV services over existing telephone wiring.

Overview

The 3AL00424AA is part of the access node’s subscriber line interface module (SLIM) family. It typically hosts multiple subscriber ports and incorporates high‑voltage protection, line driving, and impedance matching circuitry. The card communicates with the main controller via a high‑speed backplane bus. It supports various xDSL technologies, including ADSL2+, VDSL2, and G.fast, as well as legacy POTS using splitterless or external splitter configurations. Its design prioritizes signal integrity and noise immunity.

Key Features

• High port density: up to 48 subscriber ports per card

• Supports ADSL2+, VDSL2 (profile 17a/30a), and G.fast

• Integrated POTS splitter for voice/data coexistence

• Built‑in test access for line diagnostics (SELT, DELT)

• Programmable transmit and receive gain

• Over‑voltage surge protection (6 kV/3 kA)

• Hot‑swappable for field replacement

• Management via SNMP and TL1

Technical Specifications

• Ports: 48x RJ‑21 (Telco 50‑pin) or 24x RJ‑45

• Line Impedance: 100 Ω balanced

• Frequency Range: Up to 106 MHz (for VDSL2 35b)

• Power Dissipation: 50 W typical, 80 W max

• Surge Protection: 6 kV/3 kA (8/20 µs)

• Diagnostic Features: SELT, DELT, metallic test (R, L, C)

• Backplane Interface: 1 Gbps serial bus

• Operating Temperature: 0°C to 45°C

• Dimensions: Standard access line card (approx. 130mm × 260mm)

Applications

This interface card is deployed in central office DSLAMs, remote cabinets, and multi‑tenant unit (MTU) installations. It enables operators to provide high‑speed broadband services over existing copper infrastructure, reducing the need for costly fiber‑to‑the‑home (FTTH) deployments.

Integration and Management

The 3AL00424AA integrates with Alcatel Lucent’s 5520 AMS (Access Management System) and supports remote firmware upgrades and parameter tuning. It provides per‑port statistics including data rate, signal‑to‑noise ratio, and error counts. Alarms are generated for loss of signal, excessive errors, or over‑temperature.

Installation and Maintenance

Install the card into an empty slot of the chassis, ensuring proper seating, and secure the front panel. The system automatically detects the card and loads the appropriate firmware. Maintenance includes periodic cleaning of connector pins and monitoring environmental conditions. The card can be replaced without service interruption if chassis supports line card redundancy.

Conclusion

The Alcatel Lucent 3AL00424AA interface card provides a cost‑effective, reliable solution for copper‑based access networks. Its high port density, comprehensive diagnostics, and robust protection ensure dependable broadband and voice service delivery.