Mobile VoIP

Voip Mobile or 'Mobile Voice over Internet Protocol' is the application of voice over IP technology to mobile handsets.
The term is : VoIP Mobile... VoIP Mobile requires a mobile handset that supports, at minimum, high speed IP communications. Most commonly this is using Voice over WiFi or VoWiFi, but the same protocols (typically SIP or jabber) can be used over any broadband IP-capable wireless network connection such as the various 3G standards, EVDO rev A (which is synchronously high speed - both high speed up and down), HSDPA or potentially WiMax.
VoIP Mobile will require a compromise between economy and mobility. For example, Voice over WiFi offers free service but is only available within the coverage area of the WiFi Access Point. High speed services from mobile operators using EVDO rev A or HSPDA with probably have better audio quality and capabilities for metropolitan-wide coverage including fast handoffs from mobile base station to another, yet it will cost more than the typical WiFi-based VoIP service.