Compact design for mobility, vp800n is making use of wireless technology and VOIP application into one box for easy-to-use and cost-saving. By supporting g.711 and g.729 voice compression technology, VOIP wifi phone vp800 effectively reduces bandwidth consumption caused by voice traffic. With an improved power-saving design, it can be used for a relatively long period of standby and in-use time... Vp800 provides a direct ip-to-ip call feature when there is no intermediate sip proxy server available in the network and can also establish an 802.11 ad-hoc network (computer-to-computer network without access point), which allows users to use the handsets as wireless intercoms.