Wireless-N Access Point with Power Over Ethernet

As the user moves on, the end node’s RF transmitter regularly checks the system to determine whether it is in touch with the original Access Point or whether it should seek a new one. When a node no longer receives acknowledgment from its original Access Point, it undertakes a new search. Upon finding a new Access Point, it then re-registers, and the communication process continues.

What is the ISM band?

The FCC and their counterparts outside of the U.S. have set aside bandwidth for unlicensed use in the ISM (Industrial, Scientific and Medical) band. Spectrum in the vicinity of 2.4 GHz, in particular, is being made available worldwide. This presents a truly revolutionary opportunity to place convenient high speed wireless capabilities in the hands of users around the globe.

What is Spread Spectrum?

Spread Spectrum technology is a wideband radio frequency technique developed by the military for use in reliable, secure, mission-critical communications systems. It is designed to trade off bandwidth efficiency for reliability, integrity, and security. In other words, more bandwidth is consumed than in the case of narrowband transmission, but the trade-off produces a signal that is, in effect, louder and thus easier to detect, provided that the receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver is not tuned to the right frequency, a spread-spectrum signal looks like background noise. There are two main alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS).

What is DSSS? What is FHSS? And what are their differences?

Frequency Hopping Spread Spectrum (FHSS) uses a narrowband carrier that changes frequency in a pattern that is known to both transmitter and receiver. Properly synchronized, the net effect is to maintain a single logical channel. To an unintended receiver, FHSS appears to be short-duration impulse noise. Direct Sequence Spread Spectrum (DSSS) generates a redundant bit pattern for each bit to be transmitted. This bit pattern is called a chip (or chipping code). The longer the chip, the greater the probability that the original data can be recovered. Even if one or more bits in the chip are damaged during transmission, statistical techniques embedded in the radio can recover the original data without the need for retransmission. To an unintended receiver, DSSS appears as low power wideband noise and is rejected (ignored) by most narrowband receivers.

Would the information be intercepted while transmitting on air?

WLAN features two-fold protection in security. On the hardware side, as with Direct Sequence Spread Spectrum technology, it has the inherent security feature of scrambling. On the software side, the WLAN series offers a variety of wireless security methods to enhance security and access control. Users can set it up depending upon their needs.

Can Linksys wireless products support file and printer sharing?

Linksys wireless products perform the same function as LAN products. Therefore, Linksys wireless products can work with NetWare, Windows NT/2000, or other LAN operating systems to support printer or file sharing.

Appendix A: Troubleshooting

41

Frequently Asked Questions

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Linksys WAP4400N manual What is the ISM band?
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WAP4400N specifications

The Linksys WAP4400N is a robust wireless access point that caters to small and medium-sized businesses looking for reliability and enhanced wireless coverage. This device combines advanced networking technologies with a user-friendly design, making it a versatile addition to any network infrastructure.

At the heart of the WAP4400N is its adherence to the IEEE 802.11n wireless networking standard, which provides significantly improved speed and range compared to its predecessors. By utilizing multiple input, multiple output (MIMO) technology, the WAP4400N can transmit and receive multiple data streams simultaneously, which boosts the overall data throughput and extends the wireless coverage area, making it ideal for larger spaces.

One of the standout features of the WAP4400N is its dual-band capability. It operates seamlessly across both the 2.4 GHz and 5 GHz frequency bands, allowing for greater flexibility and reduced interference. This dual-band functionality enables users to optimize their wireless environment by assigning less congested channels, which is particularly useful in densely populated areas where multiple wireless networks compete for bandwidth.

The WAP4400N also boasts comprehensive security features. It supports WPA2 encryption, ensuring that data transmissions remain secure against unauthorized access. Additionally, it offers MAC address filtering and the option to create a guest network, allowing businesses to provide internet access to visitors without compromising the security of their main network.

Installation and configuration of the WAP4400N are straightforward, thanks to its web-based interface and guided setup wizard. The access point is equipped with Power over Ethernet (PoE) capability, which simplifies deployment by allowing the device to receive power through the Ethernet cable, eliminating the need for additional power adapters or outlets.

For monitoring network performance, the WAP4400N includes advanced features such as traffic prioritization and bandwidth management. These features allow administrators to allocate bandwidth to critical applications, ensuring optimal performance for essential business operations.

In summary, the Linksys WAP4400N is an excellent choice for businesses seeking a powerful and efficient wireless access point. With its advanced wireless technologies, strong security features, and ease of management, it effectively meets the demands of modern networking environments, providing reliability and speed that users can trust.
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