The M71V2 Internal Radio

The M71V2 Handheld Terminal comes equipped with an internal 802.11b radio and antenna. This internal radio is specifically designed to communicate with any 802.11b Access Point. The range of the internal radio depends greatly on the quality of the Access Point and the RF communications characteristic of the environment where the device is used. The typical range for an 802.11b radio is 500 feet through free air. Additional Access Points must be added to improve coverage in a larger area, or in electrically noisy RF environments.

802.11b Fallback Mode

Wireless LAN technology is designed to make maintaining a connection between two devices as reliable and consistent as possible. Since the speed of the connection between wireless devices will vary as range and signal quality varies, the wireless devices will intentionally sacrifice throughput (data rate or connection speed as measured in bits per second) in exchange for maintaining a reliable connection. In other words, a reliable connection at a lower speed is preferred over an unreliable connection at a higher speed (i.e., it is easier to maintain the connection if data rate is deliberately reduced, or put another way, lower data rates will tolerate a higher range and/or worse signal quality). This characteristic is known as fallback. As example, an 802.11b system will fallback from 11 Mbps to 5.5 Mbps as range increases or signal quality decreases. Subsequent fallbacks from 5.5 Mbps to 2 Mbps and 1 Mbps are also supported

Interference and Coexistence

802.11b operates in a range of radio frequencies known as an "unlicensed" band (i.e. the FCC does NOT require the use of a license in order to operate a radio transmitter in this range). This means that commercially available radio devices other than wireless LAN devices are permitted to use the same frequency band as 802.11b. Consequently, these co-existing radio devices can interfere or "jam" the wireless LAN (and vice versa). Ironically, the most troublesome devices are cordless telephones and microwave ovens.

Fortunately, higher quality cordless phones tend to "listen" for a clear channel before becoming active and will thus avoid interfering with a wireless LAN (i.e., the cordless phone seeks a clear channel for itself so naturally avoids being interfered with or being a source of interference). Jamming from microwave ovens is more severe but is usually restricted to the upper frequency range for 802.11b (it should be noted that 802.11b divides the available frequency band into 11 channels. The higher numbered channels are most susceptible to microwave oven interference).

In each instance, jamming occurs only when the cordless telephone or microwave oven is active.

Security Issues

Much has been publicized in the media about security problems with wireless LANs. Although it cannot be denied that the encryption algorithms currently used in 802.11b are flawed, the fact is that security breaches of a wireless LAN require a deliberate attempt to access the network by an intruder. It is highly recommended that WEP encryption be used and in some cases the access

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IBM manual M71V2 Internal Radio, 802.11b Fallback Mode, Interference and Coexistence, Security Issues

M71V2 specifications

The IBM M71V2 is a highly advanced server designed to meet the demanding needs of modern enterprise environments. Known for its robust performance and reliable scalability, the M71V2 is engineered to manage a variety of workloads, making it an ideal choice for businesses looking to optimize their IT infrastructure.

One of the standout features of the IBM M71V2 is its powerful processing capabilities, which are driven by the latest generation of IBM POWER processors. These processors are designed to handle multi-threaded applications efficiently and provide superior performance for critical business applications. With support for a large number of cores, the M71V2 can execute multiple tasks simultaneously, ensuring that businesses can run resource-intensive applications without compromising speed or efficiency.

The M71V2 is also built with advanced memory technology, offering high bandwidth and scalability options. Its memory architecture is designed to minimize latency and maximize throughput, enabling seamless access to data. This is particularly beneficial for applications requiring real-time data processing, such as analytics and large-scale databases.

In terms of storage, the IBM M71V2 provides flexible options to accommodate varying enterprise needs. It supports a range of storage configurations, including high-performance SSDs and traditional HDDs, allowing businesses to choose the best fit for their workloads. Additionally, the M71V2 features advanced storage management tools to streamline data management and ensure high availability.

Security is a paramount concern for modern enterprises, and the IBM M71V2 incorporates state-of-the-art security features. With built-in encryption capabilities and comprehensive security protocols, it helps safeguard sensitive data from unauthorized access and cyber threats. This focus on security allows businesses to comply with industry regulations and protect their critical information assets.

Networking capabilities are another area where the IBM M71V2 excels. It supports multiple networking technologies, including high-speed Ethernet and Fibre Channel, ensuring that it can handle the data transfer requirements of modern digital operations. The server is also designed for easy integration into existing network architectures, promoting seamless communication between devices.

Overall, the IBM M71V2 stands out as a versatile and powerful server solution, recognized for its performance and reliability. Its combination of advanced processing power, scalable memory, flexible storage options, and high-level security features makes it an optimal choice for enterprises seeking to power their digital transformation initiatives and drive business success.