WiFi stands for Wireless Fidelity and is the same thing as saying WLAN which stands for "Wireless Local Area Network." WiFi works off of the same principal as other wireless devices - it uses radio frequencies to send signals between devices.
VoIP (Voice over Internet Protocol) phone systems make good sense for small businesses. In fact, recent research finds that more than one-third of all businesses are now using a VoIP phone system, with the vast majority of those being businesses with fewer than 50 employees.
Wireless networking is becoming the new standard for enterprise connectivity. WLAN’s eliminate the need for costly installation of cabled fiber and allows for surveillance systems to be extended and updated with minimal disruption to the existing network. MetroLinq PTP/PTMP gigabit wireless networks are often the only solution in many urban, remote and difficult-to-access areas. A complete wireless video system can now be deployed and installed in just days, instead of weeks or months.