QPA139DA Optical Interface Circuit Pack

QPA139DA Optical Interface Circuit Pack

The QPA139DA is a carrier-grade optical interface circuit pack manufactured by Nortel Networks for use in high-availability optical transport and access systems. This module is designed to support stable optical signal transmission in telecom environments where reliability and long service life are critical.

Product Overview

The QPA139DA provides optical signal interfacing within Nortel transport platforms, enabling efficient handling of fiber-based network connections. It is commonly deployed in legacy and hybrid optical infrastructures where proven Nortel hardware continues to support production networks.

Its robust design makes it suitable for continuous operation in central offices, data centers, and carrier facilities.

Key Features

• Optical interface functionality for telecom transport systems

• Designed for carrier-grade optical networks

• Supports stable signal transmission over fiber links

• Modular circuit pack design for easy installation and replacement

• Fully managed through the host system’s control and monitoring framework

Typical Applications

The QPA139DA is typically used in:

• Optical transport and aggregation networks

• Metro and regional fiber infrastructures

• Telecom access and backbone environments

• Legacy Nortel optical platforms still in active service

This circuit pack helps maintain optical connectivity and operational consistency in networks that require dependable, long-term hardware solutions.

Technical Characteristics (General)

• Module type: Optical interface circuit pack

• Network layer: Optical transport

• Integration: Managed via system backplane and platform software

• Installation: Plug-in module for supported Nortel shelves

(Exact optical specifications such as wavelength, power levels, and interface type depend on platform configuration and software release.)

Reliability and Design

The QPA139DA is built to telecom industry standards, supporting:

• 24/7 continuous operation

• Long operational lifespan

• High system availability

• Compatibility with system alarms and diagnostics

These characteristics make it a dependable choice for operators maintaining or expanding existing Nortel-based optical networks.

Compatibility Notes

The QPA139DA is intended for use only in compatible Nortel systems. Prior to installation, verification of shelf type, slot assignment, and supported software versions is recommended to ensure correct operation.