# WMM / WME WiFi Multimedia - WMM (also known as WiFi Multimedia Extension - WME) - improves quality of service on a network by prioritizing data by four configurable categories: **Voice**: Voice packets for Voice over IP (VoIP) calls. **Video**: Video packets for support of TV streams. **Best effort**: Support for legacy devices or devices lacking QoS standards. **Background**: File downloads, print jobs and other traffic that does not suffer from increased latency. WMM does not provide guaranteed throughput.