초록 ▼

A method and apparatus are provided for effectuating voice communication between a mobile station and a mobile radio network. A gateway to the mobile radio network receives an incoming voice call for a destination mobile station and accesses information pertaining the status and location of the dest

A method and apparatus are provided for effectuating voice communication between a mobile station and a mobile radio network. A gateway to the mobile radio network receives an incoming voice call for a destination mobile station and accesses information pertaining the status and location of the destination mobile station. A determination is made as to whether the destination mobile station is capable of operation in a voice mode using circuit-switched communications across a traffic channel. If the destination mobile station is operable in the voice mode, a circuit-switched communication on a traffic channel is established between the mobile radio network and the destination mobile station. Otherwise, the incoming voice call is routed to a voice gateway which converts the voice call to data packets and routes the data packets to the mobile station across an Internet Protocol communication network to a packet gateway of the mobile radio network. The packet gateway routes the call across a packet data channel of the mobile radio network to the destination mobile station using a packet data service.

대표청구항 ▼

[ What is claimed is:] [1.]1. An apparatus for effectuating voice communication with a mobile station, comprising:a gateway mobile services switching center capable of receiving an incoming voice call and also capable of determining if said mobile station is able to operate in a voice mode based on

[ What is claimed is:] [1.]1. An apparatus for effectuating voice communication with a mobile station, comprising:a gateway mobile services switching center capable of receiving an incoming voice call and also capable of determining if said mobile station is able to operate in a voice mode based on an information provided by a HLR and further capable of routing said voice call across a mobile radio network toward said mobile station by enabling circuit-switched communications with said mobile station on a traffic channel if said mobile station is able to operate in said voice mode; anda voice gateway, coupled to said gateway mobile services switching center, capable of routing said voice call across an Internet Protocol communication network and the mobile radio network toward said mobile station by enabling packet-switched communications with said mobile station on a packet channel if said information provided by said HLR indicates that said mobile station is not able to operate in said voice mode.