Abstract: To perform an inter-technology handoff, an indicator in a service request message is received by a mobile switching center (MSC). The indicator is to indicate to the MSC that an inter-technology handoff from a packet-data wireless access network to a circuit wireless access network has been requested. The behavior of the MSC is modified in response to the indicator to reduce the communication silence during the inter-technology handoff.

Abstract: A set of services is from a multimedia network to a multi-mode mobile station that is able to operate over a packet-switched access network and a circuit-switched access network. Packet-switched call control messages are communicated between a node in the multimedia network and the multi-mode mobile station through the packet-switched access network when the multi-mode mobile station is attached to the packet-switched access network, where the packet-switched call control messages communicated through the packet-switched access network are used to provide the set of services. Packet-switched call control messages are communicated between the node in the multimedia network and the multi-mode mobile station through the circuit-switched access network when the multi-mode mobile station is attached to the circuit-switched access network, where the packet-switched call control messages communicated through the circuit-switched access network are used to provide the set of services.

Abstract: A set of services is from a multimedia network to a multi-mode mobile station that is able to operate over a packet-switched access network and a circuit-switched access network. Packet-switched call control messages are communicated between a node in the multimedia network and the multi-mode mobile station through the packet-switched access network when the multi-mode mobile station is attached to the packet-switched access network, where the packet-switched call control messages communicated through the packet-switched access network are used to provide the set of services. Packet-switched call control messages are communicated between the node in the multimedia network and the multi-mode mobile station through the circuit-switched access network when the multi-mode mobile station is attached to the circuit-switched access network, where the packet-switched call control messages communicated through the circuit-switched access network are used to provide the set of services.

Abstract: A set of services is from a multimedia network to a multi-mode mobile station that is able to operate over a packet-switched access network and a circuit-switched access network. Packet-switched call control messages are communicated between a node in the multimedia network and the multi-mode mobile station through the packet-switched access network when the multi-mode mobile station is attached to the packet-switched access network, where the packet-switched call control messages communicated through the packet-switched access network are used to provide the set of services. Packet-switched call control messages are communicated between the node in the multimedia network and the multi-mode mobile station through the circuit-switched access network when the multi-mode mobile station is attached to the circuit-switched access network, where the packet-switched call control messages communicated through the circuit-switched access network are used to provide the set of services.

Abstract: A mobile station attached to a first type service domain determines that the mobile station should deregister in a second, different type service domain. In response to the determination to deregister, a deregistration request is sent through the first type service domain. The deregistration request indicates that the mobile station is to be deregistered in the second type service domain.

Abstract: To perform an inter-technology handoff, an indicator in a service request message is received by a mobile switching center (MSC). The indicator is to indicate to the MSC that an inter-technology handoff from a packet-data wireless access network to a circuit wireless access network has been requested. The behavior of the MSC is modified in response to the indicator to reduce the communication silence during the inter-technology handoff.

Abstract: To perform an inter-technology handoff, an indicator in a service request message is received by a mobile switching center (MSC). The indicator is to indicate to the MSC that an inter-technology handoff from a packet-data wireless access network to a circuit wireless access network has been requested. The behavior of the MSC is modified in response to the indicator to reduce the communication silence during the inter-technology handoff.

Abstract: A set of services is from a multimedia network to a multi-mode mobile station that is able to operate over a packet-switched access network and a circuit-switched access network. Packet-switched call control messages are communicated between a node in the multimedia network and the multi-mode mobile station through the packet-switched access network when the multi-mode mobile station is attached to the packet-switched access network, where the packet-switched call control messages communicated through the packet-switched access network are used to provide the set of services. Packet-switched call control messages are communicated between the node in the multimedia network and the multi-mode mobile station through the circuit-switched access network when the multi-mode mobile station is attached to the circuit-switched access network, where the packet-switched call control messages communicated through the circuit-switched access network are used to provide the set of services.

Abstract: A mobile station attached to a first type service domain determines that the mobile station should deregister in a second, different type service domain. In response to the determination to deregister, a deregistration request is sent through the first type service domain. The deregistration request indicates that the mobile station is to be deregistered in the second type service domain.

Abstract: A set of services is from a multimedia network to a multi-mode mobile station that is able to operate over a packet-switched access network and a circuit-switched access network. Packet-switched call control messages are communicated between a node in the multimedia network and the multi-mode mobile station through the packet-switched access network when the multi-mode mobile station is attached to the packet-switched access network, where the packet-switched call control messages communicated through the packet-switched access network are used to provide the set of services. Packet-switched call control messages are communicated between the node in the multimedia network and the multi-mode mobile station through the circuit-switched access network when the multi-mode mobile station is attached to the circuit-switched access network, where the packet-switched call control messages communicated through the circuit-switched access network are used to provide the set of services.

Abstract: A mobile station attached to a first type service domain determines that the mobile station should deregister in a second, different type service domain. In response to the determination to deregister, a deregistration request is sent through the first type service domain. The deregistration request indicates that the mobile station is to be deregistered in the second type service domain.

Abstract: A call request is sent to establish a telephony session over an Internet Protocol (IP) network between an originating terminal and a destination device. A message responsive to the call request is received from a node connected to the IP network. In response to receiving the message, local generation of a comfort indicator at the 5 originating terminal is performed.

Abstract: A call request is sent to establish a telephony session over an Internet Protocol (IP) network between an originating terminal and a destination device. A message responsive to the call request is received from a node connected to the IP network. In response to receiving the message, local generation of a comfort indicator at the originating terminal is performed.

Abstract: To provide expedited ringback at an originating terminal, a call request is sent from the originating terminal to a destination device over an Internet Protocol (IP) network. Local resource reservation is performed by the originating terminal after sending the call request. A first message is received by the originating terminal prior to the originating terminal sending a second message indicating that local resource reservation has been performed, the first message for indicating that alerting is being performed at the destination device. In response to receiving the first message and determining that the local resource reservation has been performed, a ringback indicator is generated by the originating terminal.

Abstract: To provide expedited ringback at an originating terminal, a call request is sent from the originating terminal to a destination device over an Internet Protocol (IP) network. Local resource reservation is performed by the originating terminal after sending the call request. A first message is received by the originating terminal prior to the originating terminal sending a second message indicating that local resource reservation has been performed, the first message for indicating that alerting is being performed at the destination device. In response to receiving the first message and determining that the local resource reservation has been performed, a ringback indicator is generated by the originating terminal.

Abstract: To perform an inter-technology handoff, an indicator in a service request message is received by a mobile switching center (MSC). The indicator is to indicate to the MSC that an inter-technology handoff from a packet-data wireless access network to a circuit wireless access network has been requested. The behavior of the MSC is modified in response to the indicator to reduce the communication silence during the inter-technology handoff.

Abstract: A mobile station attached to a first type service domain determines that the mobile station should deregister in a second, different type service domain. In response to the determination to deregister, a deregistration request is sent through the first type service domain. The deregistration request indicates that the mobile station is to be deregistered in the second type service domain.

Abstract: Services are provided to a multi-mode mobile station that is attachable to a packet-switched access network and a circuit-switched access network. A first message indicating a service relating to the multi-mode mobile station is received, and in response to the first message, a control message is sent over a signaling interface from a first node in a circuit-switched domain to a second node in a packet-switched domain. The control message contains a circuit-switched control indication to enable the service to be performed.

Abstract: To perform an inter-technology handoff, an indicator in a service request message is received by a mobile switching center (MSC). The indicator is to indicate to the MSC that an inter-technology handoff from a packet-data wireless access network to a circuit wireless access network has been requested. The behavior of the MSC is modified in response to the indicator to reduce the communication silence during the inter-technology handoff.

Abstract: In general, the present invention provides for a direct inter-subsystem transfer of an active communication session, such as a call, between a packet subsystem (PS) and a circuit-switched subsystem (CS) in an efficient and effective manner while maintaining service control and continuity. Further, the inter-subsystem transfer may take place between a PS of one generation and a CS of another generation.