d-link wireless products are based on industry standards to provide easy-to-use and compatible high-speed wireless connectivity within your home, business or public access wireless networks. d-link wireless products will allow you access to the data you want, when and where you want it. you will be able to enjoy the freedom that wireless networking brings.

    a wlan is a cellular computer network that transmits and receives data with radio signals instead of wires. wlans are used increasingly in both home and office environments, and public areas such as airports, coffee shops and universities. innovative ways to utilize wlan technology are helping people to work and communicate more efficiently. increased mobility and the absence of cabling and other fixed infrastructure have proven to be beneficial for many users.

    wireless users can use the same applications they use on a wired network. wireless adapter cards used on laptop and desktop systems support the same protocols as ethernet adapter cards.

    people use wireless lan technology for many different purposes:

    mobility - productivity increases when people have access to data in any location within the operating range of the wlan. management decisions based on real-time information can significantly improve worker efficiency.

    low implementation costs – wlans are easy to set up, manage, change and relocate. networks that frequently change can benefit from wlans ease of implementation.

    wlans can operate in locations where installation of wiring may be impractical.

    installation and network expansion - installing a wlan system can be fast and easy and can eliminate the need to pull cable through walls and ceilings. wireless technology allows the network to go where wires cannot go - even outside the home or office.

    scalability – wlans can be configured in a variety of topologies to meet the needs of specific applications and installations. configurations are easily changed and range from peer-to-peer networks suitable for a small number of users to larger infrastructure networks to accommodate hundreds or thousands of users, depending on the number of wireless devices deployed.

    inexpensive solution - wireless network devices are as competitively priced as conventional ethernet network devices.

    wireless basics (continued)

    standards-based technology

    the di-624+ wireless broadband router utilizes the new 802.11g standard.

    the ieee 802.11g standard is an extension of the 802.11b standard. it increases the data rate up to 54 mbps within the 2.4ghz band, utilizing ofdm technology.

    this means that in most environments, within the specified range of this device, you will be able to transfer large files quickly or even watch a movie in mpeg format over your network without noticeable delays. this technology works by transmitting high-speed digital data over a radio wave utilizing ofdm (orthogonal frequency division multiplexing) technology. ofdm works by splitting the radio signal into multiple smaller sub-signals that are then transmitted simultaneously at different frequencies to the receiver. ofdm reduces the amount of crosstalk (interference) in signal transmissions.

    the di-624+ is backwards compatible with 802.11b devices. this means that if you have an existing 802.11b network, the devices in that network will be compatible with 802.11g devices at speeds of up to 11mbps in the 2.4ghz range.

    wireless basics (continued)

    installation considerations

    the d-link airplus xtreme g+ di-624+ lets you access your network, using a wireless connection, from virtually anywhere within its operating range. keep in mind, however, that the number, thickness and location of walls, ceilings, or other objects that the wireless signals must pass through, may limit the range. typical ranges vary depending on the types of materials and background rf (radio frequency) noise in your home or business. the key to maximizing wireless range is to follow these basic guidelines:

    1 keep the number of walls and ceilings between the di-624+ and other network devices to a minimum - each wall or ceiling can reduce your d-link wireless product’s range from 3-90 feet (1-30 meters.) position your devices so that the number of walls or ceilings is minimized.

    2 be aware of the direct line between network devices. a wall that is 1.5 feet thick (.5 meters), at a 45-degree angle appears to be almost 3 feet (1 meter) thick. at a 2-degree angle it looks over 42 feet (14 meters) thick! position devices so that the signal will travel straight through a wall or ceiling (instead of at an angle) for better reception.

    3 building materials can impede the wireless signal - a solid metal door or aluminum studs may have a negative effect on range. try to position wireless devices and computers with wireless adapters so that the signal passes through drywall or open doorways and not other materials.

    4 keep your product away (at least 3-6 feet or 1-2 meters) from electrical devices or appliances that generate extreme rf noise.