Alcatel Lucent MPX-16/64-T-L3 Multiplexer Module

The Alcatel Lucent MPX‑16/64‑T‑L3 (also designated MPX1664TL3) is a high‑density TDM multiplexer module used in telecom access and transport networks. This module aggregates multiple E1 (2.048 Mbps) or T1 (1.544 Mbps) streams into higher‑order PDH or SDH interfaces, providing cost‑effective connectivity for legacy voice and data services. It is a key component for operators maintaining circuit‑switched infrastructure while transitioning to packet networks.

Overview

The MPX‑16/64‑T‑L3 is part of Alcatel Lucent’s multiplexer family, designed for use in central office and remote access nodes. It supports up to 16 or 64 E1/T1 ports (depending on variant) and provides cross‑connect functions for flexible timeslot assignment. The module interfaces with higher‑order transport systems via standard interfaces such as DS3/E3 or STM‑1. It includes comprehensive performance monitoring and alarm handling capabilities, enabling operators to maintain service quality.

Key Features

• Supports up to 16 or 64 E1/T1 ports (software‑selectable)

• Aggregation into DS3/E3 or STM‑1 interfaces

• Full non‑blocking timeslot cross‑connect

• Built‑in line protection (1+1) for critical tributaries

• Performance monitoring with G.826/824 compliance

• Loopback and test pattern generation for diagnostics

• Management via TL1, SNMP, or craft interface

• Hot‑swappable for maintenance

Technical Specifications

• Ports: 16 or 64x RJ‑48c for E1/T1 (balanced 120Ω/100Ω)

• Aggregate Interface: 1x DS3 (44.736 Mbps) or 1x STM‑1 (155 Mbps)

• Cross‑connect: Full timeslot‑level (each 64 kbps)

• Line Code: HDB3 (E1) / B8ZS (T1)

• Framing: G.704 (E1) / T1.403 (T1)

• Power Consumption: 30 W typical

• Operating Temperature: 0°C to 45°C

• Dimensions: Standard line card format

Applications

This multiplexer is used for connecting legacy PBXs, leased lines, and mobile base stations to the core transport network. It is ideal for network operators who need to consolidate multiple low‑speed circuits into high‑capacity backhaul links.

Management and Integration

The module can be configured and monitored via a craft terminal, SNMP, or TL1. It supports remote provisioning of cross‑connects and performance reporting. Alarms are generated for signal loss, AIS, and excessive bit errors.

Installation and Maintenance

Install the card into the chassis slot, connect the E1/T1 cables and aggregate interface, and secure the card. The system automatically recognizes the module and loads configuration. Maintenance includes periodic verification of cable integrity and performance statistics.

Conclusion

The Alcatel Lucent MPX‑16/64‑T‑L3 multiplexer module provides a flexible, high‑density solution for TDM aggregation and cross‑connection. Its robust design and management features ensure reliable operation in legacy telecom environments.