1000BASE-LX MDAs

Warning: This is a Class 1 Laser/LED product. It contains a laser light source that can injure your eyes. Never look into an optical fiber or connector port. Always assume that the fiber optic cable or connector is connected to a laser light source.

There are two 1000BASE-LX (longwave gigabit) MDA models:

•The 450-1LR MDA is a single MAC MDA with a separate redundant Phy (backup Phy port). Only one Phy port can be active at any time. If the active Phy port fails, the redundant Phy port automatically becomes the active port.

•The 450-1LX MDA is a single Phy MDA.

Both models (Figure 4) use longwave 1300 nm fiber optic connectors to connect devices over single mode

(3 kilometer) or multimode (550 meters) fiber optic cable.

Note: The optical performance of this transceiver cannot be guaranteed when connected to a multimode fiber plant without the use of the special offset SMF/ MMF mode conditioning patch cord (see

“1000BASE-LX Multimode Applications” on page 16).

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Nortel Networks 302403-B manual 1000BASE-LX MDAs, 1000BASE-LX Multimode Applications on
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302403-B specifications

Nortel Networks 302403-B is a part of Nortel's portfolio that exemplifies its commitment to providing advanced networking solutions tailored for both enterprise and service provider environments. As a leading telecommunications company, Nortel was known for its innovative technology, and the 302403-B is no exception.

The Nortel 302403-B primarily operates as a power supply unit designed to work with Nortel's communication systems, particularly in Voice over Internet Protocol (VoIP) installations. One of its standout features is its ability to supply power to various network devices while ensuring high levels of reliability and efficiency. This attribute is crucial for maintaining uptime in voice and data communications, which are essential in today’s interconnected world.

Technologically, the 302403-B supports Power over Ethernet (PoE) standards, facilitating the transmission of electricity alongside data through network cables. This integration simplifies installations and reduces the need for additional electrical outlets, making it particularly advantageous for businesses that depend on a myriad of IP devices. The ability to power VoIP phones, wireless access points, and IP cameras directly through the Ethernet cable streamlines the networking process and reduces clutter.

One of the primary characteristics of the Nortel 302403-B is its robust build quality, designed to endure the pressures of a corporate environment. This power supply unit often includes features like multiple output options, allowing it to effectively cater to diverse equipment needs. It typically features built-in safeguards against power surges and overloading, ensuring that connected devices are protected from potential damage, which enhances the overall lifespan of the network infrastructure.

Moreover, the Nortel 302403-B is designed for easy integration into existing networks, offering compatibility with a wide range of Nortel devices and third-party equipment. Its user-friendly design includes diagnostic indicators for easy monitoring of status and performance, thereby aiding network maintenance tasks.

In conclusion, the Nortel Networks 302403-B represents a combination of reliability, efficiency, and advanced technology, making it an integral component for organizations that rely on a robust communication infrastructure. Whether used in new installations or as part of an existing network upgrade, it stands as a testament to Nortel's legacy in shaping telecommunications solutions.
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