W800-The-Info
WAeronautical fixed service
WBroadcasting (networking)
WGigabit Wireless
WGoogle Hangouts
WGoogle Voice
WHotline
WKnowledge Generation Bureau
WKol Mevaser
WOrckit-Corrigent
WPoint-to-multipoint communication
WTelecommunications relay service
WTelehealth
WTelehealth
WTriple play (telecommunications)
WVideotelephony
WWirephoto