Federal Communication Commission Interference Statement

This Equipment has been tested and found to comply with the limits for a class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

Consult the dealer or an experienced radio/TV technician for help.

Warning:

You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment.

100-409-01

Copyright © 2002 Madge Networks. All rights reserved.

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Madge Networks 802.11B (95-20) manual Federal Communication Commission Interference Statement

802.11B (95-20) specifications

Madge Networks 802.11B (95-20) represents a notable milestone in the evolution of wireless networking technology, introducing faster data rates and more robust features that cater to the growing demands for wireless connectivity in various environments. As one of the implementations of the IEEE 802.11b standard, it operates in the 2.4 GHz frequency range, providing a balance between performance, range, and coverage.

One of the key features of Madge Networks 802.11B is its support for data rates of up to 11 Mbps, which is significantly higher than its predecessors. This increase in bandwidth allows for a wider range of applications, from basic internet browsing to more demanding tasks such as streaming audio and video. The device also supports backward compatibility with older 802.11 standards, ensuring that users can connect to legacy wireless devices without issue.

In terms of technologies, the Madge Networks 802.11B incorporates Direct Sequence Spread Spectrum (DSSS) as its modulation technique. DSSS enhances signal robustness, enabling reliable transmission even in environments with considerable interference. Additionally, the technology includes Radio Frequency (RF) techniques that help to minimize the impact of physical obstructions and maximize signal penetration within various spaces.

Madge Networks also emphasizes security in its 802.11B offerings. The inclusion of Wired Equivalent Privacy (WEP) initially provided a basic level of encryption to protect wireless data. Despite its vulnerabilities, WEP was a significant early step towards making wireless communication more secure, and subsequent updates have led to more advanced security protocols being adopted in newer devices.

The versatility of the Madge Networks 802.11B system makes it suitable for various applications, ranging from corporate networking to home use. The ease of installation, combined with its significant performance enhancements compared to older wireless technologies, made it a popular choice during its time.

Moreover, the device supports infrastructure and ad-hoc networking modes, providing users with flexibility in how they wish to set up their wireless networks. With features such as roaming capabilities, users can seamlessly transition between access points within the coverage area without losing connectivity.

In summary, Madge Networks 802.11B (95-20) played a crucial role in advancing wireless networking technology, providing increased speed, improved reliability, and essential security measures. Its legacy can be seen in the continued evolution of wireless standards that build upon these foundational characteristics.