Black Box RJ-45, RJ-11 manual Introduction, Description

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IC207A/8A-Manual 7/12/00 9:31 AM Page 8

ACTIVE STAR HUB

2. Introduction

2.1 Description

The IBM® 5250 Express protocol, capable of TCP/IP support, is quickly becoming the “de facto” standard for AS/400® 5250 PC emulation. With the Active Star Hub from Black Box, you’re guaranteed an upgrade path (via firmware) to the new protocol for far less cost than completely replacing the hub.

The Hub is a state-of-the-art dual active star that has two host-port connections and 14 device-port connections. It was designed with protocol-transparent criteria and is available with either RJ-11 or RJ-45 connectors. This standards-based, flexible UTP star solution is a low-cost alternative to expensive and rigid twinaxial daisychain cabling. Each device port is isolated, assuring that problems won’t be transmitted throughout the entire network. Digital Phase Lock Loop and signal conditioning, noise suppression, and proven interoperability assure reliable and transparent connections with all models of IBM AS/400, 3X, and compatible terminals, printers, emulation cards, and remote controllers.

2.2 Features

Proven interoperability with 5250 compatibles.

Standards-based 5250 “star” hub distribution allows greater flexibility for adds, moves, and changes.

Meets or exceeds EIA/TIA wiring recommendations.

Advanced noise filtering and signal conditioning allows the use of lesser-grade cabling systems.

Polarity insensitive as long as host and device polarities are the same.

Guaranteed firmware upgrade path to the IBM 5250 Express protocol for up to 800% throughput enhancement.

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Contents Active Star Hub-RJ-11 Active Star Hub-RJ-45 Read this First SafetyActive Star HUB NOM Statement Active Star HUB Trademarks Contents Active Pair-Configurable SpecificationsDescription IntroductionIntroduction Model Pins 4/5 3/6 1/2 Active Pair SetupActive Pair Setup Jumper Setting for Normal Polarity RJ-45 pins 1 Function Indicators and ConnectorsInstallation Active Star Hub’s front-panel Power LED is off TroubleshootingDevices interfere with each other Copyright 2000. Black Box Corporation. All rights reserved
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RJ-45, RJ-11 specifications

The Black Box RJ-11 and RJ-45 connectors are essential components in modern telecommunications and networking, facilitating connectivity in both telephone systems and data networking environments. These connectors ensure reliable and efficient communication across various devices and networks, boasting a range of features and characteristics that cater to diverse requirements.

The RJ-11 connector is primarily used in telephony systems. Typically, it comprises a 6-position, 2-contact design, although it can also be found in 4- and 6-contact variants. The standard RJ-11 is compatible with telephone lines, allowing for easy connection of telephones, modems, and fax machines. Its compact size and simple design facilitate straightforward installation and replacement. The most notable feature of the RJ-11 is its ability to support voice transmission with a frequency range typically up to 1 MHz, which is adequate for standard phone conversations. The connector's design also minimizes interference and provides secure connections, enhancing call quality.

In contrast, the RJ-45 connector is widely recognized in networking applications, particularly Ethernet networks. This 8-position, 8-contact (8P8C) connector is fundamental for data transmission over Local Area Networks (LANs). The RJ-45 supports various Ethernet standards, including 10BASE-T, 100BASE-TX, and 1000BASE-T, allowing for data rates ranging from 10 Mbps up to 10 Gbps, depending on cable and equipment compatibility. One of the defining characteristics of the RJ-45 is its ability to accommodate shielded and unshielded twisted-pair cabling (STP and UTP), which helps reduce electromagnetic interference, thereby enhancing network stability and performance.

Both RJ-11 and RJ-45 connectors are designed for durability and longevity. They feature robust construction materials that resist wear and tear, ensuring consistent performance over extended use. Moreover, both connectors are easy to install and come with various cable assemblies and adapters to cater to different environments and requirements, providing flexibility and convenience for users.

As technology continues to evolve, the RJ-11 and RJ-45 connectors remain crucial in maintaining seamless communication and data transfer capabilities, serving as reliable interfaces in an increasingly interconnected world. With their distinctive features and reliable performance, these connectors will continue to play a vital role in both telephony and networking applications for years to come.