Abstract: A mobile device identifies multiple, different networks available to a client resident on the mobile device, and sends multiple registration messages to an outbound proxy over the multiple, different networks via first, second and third communication interfaces. The mobile device determines whether access has been lost to a first network of the multiple different networks, and sends an invite message via the second communication interface, based on the determination, for an outbound call via a second network of the multiple, different networks for routing the outbound call via the second network.

Abstract: A mobile device determines whether the mobile device is docked with a docking station that connects to a VoIP network, where the mobile device is capable of receiving calls to a cellular telephone number and calls to a VoIP telephone number. The mobile device notifies, if the mobile device is docked with the docking station, a call handling node in a cellular network to forward calls destined for the cellular telephone number to the VoIP telephone number at a VoIP call server. The mobile device receives a call forwarded from the VoIP call server, where the call was originally destined for the cellular telephone number.

Abstract: A mobile device identifies multiple, different networks available to a client resident on the mobile device, and sends multiple registration messages to an outbound proxy over the multiple, different networks via first, second and third communication interfaces. The mobile device determines whether access has been lost to a first network of the multiple different networks, and sends an invite message via the second communication interface, based on the determination, for an outbound call via a second network of the multiple, different networks for routing the outbound call via the second network.

Abstract: A method includes receiving, at a computing device, a call originally directed to a mobile device, and forwarding the call to at least one other device. The method further includes determining that the forwarded call is not answered by the at least one other device and forwarding two versions of the call to the mobile device, such that one of the two versions of the call is automatically directed toward a voicemail account associated with the mobile device. The other of the two versions of the call is then canceled.

Abstract: A network mobility device registers with a switch in a telephone network, and receives a first message from a docking station indicating that a mobile device has undocked from the docking station. The docking station includes a Voice over Internet Protocol (VoIP) phone that has a wired connection to a data network, and the mobile device includes a portable digital computing device. The network mobility device receives a call, destined for the mobile device, routed from the switch, and sends an alert message, based on the undocking of the mobile device and the received call, to the mobile device to notify a client of the mobile device of the call. The network mobility device forwards the call, based on the undocking of the mobile device, from the network mobility device to the client at the mobile device via the data network.

Abstract: A mobile device establishes a first network connection via a first communication interface when the mobile device is in a first docking status with a docking station. The mobile device sends Voice over Internet Protocol (VoIP) traffic associated with a VoIP call via the first network connection, and activates a second network connection via a second communication interface when the mobile device is in the first docking status, where the second network connection is different than the first network connection. The mobile device re-directs the VoIP traffic via the previously activated second network connection based on a change in docking status of the mobile device with the docking station to a second docking status.

Abstract: Enhanced call management services to users receiving incoming calls on extensions on a private branch exchange (PBX) is provided by an application server configured to provide call management services to at least one of the users and a protocol proxy configured to receive call information from the PBX according to a protocol for establishing call sessions. The application server is further configured to receive the call information from the protocol proxy.

Abstract: A method includes receiving, at a computing device, a call originally directed to a mobile device, and forwarding the call to at least one other device. The method further includes determining that the forwarded call is not answered by the at least one other device and forwarding two versions of the call to the mobile device, such that one of the two versions of the call is automatically directed toward a voicemail account associated with the mobile device. The other of the two versions of the call is then canceled.

Abstract: A mobile device determines whether the mobile device is docked with a docking station that connects to a VoIP network, where the mobile device is capable of receiving calls to a cellular telephone number and calls to a VoIP telephone number. The mobile device notifies, if the mobile device is docked with the docking station, a call handling node in a cellular network to forward calls destined for the cellular telephone number to the VoIP telephone number at a VoIP call server. The mobile device receives a call forwarded from the VoIP call server, where the call was originally destined for the cellular telephone number.

Abstract: A mobile device establishes a first network connection via a first communication interface when the mobile device is in a first docking status with a docking station. The mobile device sends Voice over Internet Protocol (VoIP) traffic associated with a VoIP call via the first network connection, and activates a second network connection via a second communication interface when the mobile device is in the first docking status, where the second network connection is different than the first network connection. The mobile device re-directs the VoIP traffic via the previously activated second network connection based on a change in docking status of the mobile device with the docking station to a second docking status.

Abstract: A network mobility device registers with a switch in a telephone network, and receives a first message from a docking station indicating that a mobile device has undocked from the docking station. The docking station includes a Voice over Internet Protocol (VoIP) phone that has a wired connection to a data network, and the mobile device includes a portable digital computing device. The network mobility device receives a call, destined for the mobile device, routed from the switch, and sends an alert message, based on the undocking of the mobile device and the received call, to the mobile device to notify a client of the mobile device of the call. The network mobility device forwards the call, based on the undocking of the mobile device, from the network mobility device to the client at the mobile device via the data network.

Abstract: Enhanced call management services to users receiving incoming calls on extensions on a private branch exchange (PBX) is provided by an application server configured to provide call management services to at least one of the users and a protocol proxy configured to receive call information from the PBX according to a protocol for establishing call sessions. The application server is further configured to receive the call information from the protocol proxy.

Abstract: Packet delivery statistics are derived from a User Datagram Protocol (UDP) stream simulating a service level provided by a Voice over Internet Protocol (VoIP) network and transmitted across the VoIP network at a first pre-defined interval. The derived packet delivery statistics are processed at a second pre-defined interval to generate network performance statistics for the VoIP network, where the second pre-defined interval is substantially larger than the first pre-defined interval.

Abstract: A method includes deriving packet delivery statistics from a User Datagram Protocol (UDP) stream simulating a service level provided by a Voice over Internet Protocol (VoIP) network and transmitted across the VoIP network at a first pre-defined interval, and processing the derived packet delivery statistics at a second pre-defined interval to generate network performance statistics for the VoIP network, where the second pre-defined interval is substantially larger than the first pre-defined interval.