Abstract: Techniques for implementing a push-to-talk feature in a mobile telecommunications environment (100) involve receiving an indication to activate a push-to-talk service for a first mobile device (130(2)) and identifying a group of mobile devices (130) associated with the push to-talk service for the first mobile device in response to the indication. The indication is received in an unstructured supplementary service data message. A notification relating to the indication to activate the push-to-talk service for the first mobile device is sent to one or more mobile devices from the identified group of mobile devices.

Abstract: Calls are routed in a distributed mobile switching center environment in response to receiving a call to be routed from a first switching mode (310(1) to a second switching node (310(2)). An inter-switch mute for the call from the first switching node to the second switching node is identified. The inter-switch route includes an intermediate switching node (305) having multiple media gateway (320). An intra-switch route within the intermediate switching node is selected from multiple possible intra-switch routes for use in establishing the inter-switch route. Each of the intra-switch routes includes one or more interconnections (330) between media gateways. The call is connected using the identified inter-switch route and the selected intra-switch route.

Abstract: Calls are routed in a distributed mobile switching center environment in response to receiving a call to be routed from a first switching mode (310(1) to a second switching node (3101(2)). An inter-switch mute for the call from the first switching node to the second switching node is identified. The inter-switch route includes an intermediate switching node (305) having multiple media gateway (320). An intra-switch route within the intermediate switching node is selected from multiple possible intra-switch routes for use in establishing the inter-switch route. Each of the intra-switch routes includes one or more interconnections (330) between media gateways. The call is connected using the identified inter-switch route and the selected intra-switch route.

Abstract: Techniques for implementing a push-to-talk feature in a mobile telecommunications environment (100) involve receiving an indication to activate a push-to-talk service for a first mobile device (130(2)) and identifying a group of mobile devices (130) associated with the push to-talk service for the first mobile device in response to the indication. The indication is received in an unstructured supplementary service data message. A notification relating to the indication to activate the push-to-talk service for the first mobile device is sent to one or more mobile devices from the identified group of mobile devices.

Abstract: A real-time exchange (RTX) interfaces to a wireless communications system to provide enhanced features for advanced voice services (AVS), which include instant messaging interworking.

Abstract: A real-time exchange (RTX) interfaces to a wireless communications system to provide enhanced features for advanced voice services (AVS), which include location-based information, voice portal integration, push ring tones and voice message screening.

Abstract: The present disclosure describes a system and method for handing off a mobile device from ananchor wireless media gateway (WMG) to a target WMG, where both WMGs are controlled by a single call server. In one example, the anchor WMG includes first and second termination points connecting the first WMG to the mobile device and another party, respectively. The method includes creating fourth and fifth termination points in the target WMG to provide an interface for the target WMG to communicate with the mobile device and the anchor WMG, respectively. A third termination point may be established in the anchor WMG, and the third and fifth termination points may link the first and second WMGs. A context may be created using the second and third termination points, and the third termination point may be made bi-directional.