Wireless is a cordless technology, in this case is to have telecommunications using electromagnetic waves instead of cables. Nowadays wireless technology is growing rapidly, by naked eye can be seen with increasing number of cellular phone usage, but it also develops wireless technology used for internet access. Wireless LAN using elektromagetik waves (radio and infrared) to perform data communication channel data from one point to another point without going through the physical facility. This connection uses a specific frequency to deliver the data, most of Wireless LAN using the 2.4 GHz frequency. Frequency is called the Industrial, Scientific and Medical Band is often called the ISM band, as described above. In some products this equipment with the ability to use PCMCIA Card 11 mbps. There is often a misunderstanding here. Referred to 11 mbps here is the ability to perform maximal Card a transmission, you could say the maximum number of upstream and downstream tools. This capability is not always able to walk as it is called 11 mbps earlier, if we calculate the loss will occur at least about 50%, so the tool is capable of transmitting data 5.5 mbps. This can be done if we use a point-to-point, meaning that on both sides using the same equipment. When you've done a point-to-multipoint, there will be a significant reduction, Multipoint here is analogous to the hub, so more and more connected with the multipoint there will be a decreased ability to transmit data. In a device that uses Multipoint Wireless LAN 11 Mbps or sometimes called Access Point, can accommodate approximately 32 individual users, but when connected is a LAN network as well, there will be a decrease in the ability of at least half, so a maximum of a Base Transceiver System (BTS) is getting 16 users from the LAN. This ability can be decreased if the BTS performed ... bandwidth such as 128 kbps, then the data distribution capability of the BTS would be reduced anyway.