Selection of a packet switched voice transmission technology in a wireless network

摘要

A voice transmission technology is selected for use in a call to a user equipment in a wireless network which includes services areas which either have a capability to support a service technology or feature throughout the service area or do not have the capability to support the service technology or feature throughout the service area. The user equipment is registered to the radio access network and has a capability to support the service technology and a capability to support a second service technology. An indicator or flag is set to a positive state if all of the services areas within a part of the radio access network have the same capability to support a service technology and to a negative state if not. A voice technology is selected for use in the call to the user equipment dependent on a determination that the indicator is positive and that the user equipment is in the part of the radio access network to which the indicator relates. The capability to support a service/feature is communicated to a database. For use in a Voice over Internet Protocol Multimedia Subsystem (VoIMS) environment employing IP Multimedia Subsystem (IMS) VoIP flags.