What is VoWLAN (Voice Over Wireless LAN)?

VoWLAN (Voice over WLAN, or VoIP over WiFi) is a technology enabling audio communication via a wireless local area network (WLAN). Any device with WiFi connectivity can be used to communicate using VoWLAN, including specific VoWLAN units designed for this purpose. A frequently employed VoWLAN usage-scenario is using it to replace other forms of short-range communication systems, such as land mobile radio system (LMRS) or handheld transceivers ("walkie-talkies").