Principles of Wi-Fi wireless networking for wireless applications

Before creating a Wi-Fi wireless network, you must prepare a wireless network card and a Wireless AP. If the computer does not have a wireless network card, you can purchase an 802.11b wireless network card with interfaces such as PCMICA and USB of the same protocol, currently, the price of such wireless NICS is within 200 RMB. The other is the selection of Wireless AP. We recommend that you choose a USB Wireless AP (1) for small office use at a price between 500 and 800 yuan. However, we recommend that you purchase wireless APs with better functions and performance if you have sufficient budget. This is related to the stability and security of business office computers accessing the Internet.

Figure 1

In actual construction, for example, there are five computers, one of which is No. 1) placed in a separate room, the other four are in the office room no. 2, No. 3, and No. 4 respectively), and the number of calls using ADSL dialing is also on the machine No. 1. Therefore, the Wireless AP is installed on machine 1, and other machines connect to the AP of machine 1 through the wireless gateway to form a wireless network 2 ).

Figure 2

1. Brief Analysis on whether Wi-Fi can carry VoIP?
2. Tips for improving wi-fi speed and distance