(
Audio 
Video 
Over 
Internet 
Protocol)  AVoIP transmits audio and video content over IP packets, taking advantage of the huge availability of Internet and local IP-based transmission systems.  IP (Internet protocol) is the universal communications protocol deployed worldwide.
Not VoIP
AVoIP is not VoIP (voice over IP), which is dedicated to packetizing voice frequencies in a bi-directional session for transmission over the Internet and IP protocol.  See 
AoIP, 
VoIP, 
A/V and 
IP.