Abstract: A mobile device utilizes a two-stage dialing solution when roaming on a visited mobile operator (MO) network to implement centralized routing so that a home network portion of a hybrid network is inserted into the path of outbound calls. A remote centralized routing (CR) service interoperates with a CR client on the mobile device. When a call is initiated to a remote party, the CR client calls into an arbitrary roaming routing number that is terminated in the home network. Once the call is connected between the mobile device and home network, the CR client sends a dialing string that includes a destination number of the remote party. The CR service calls the destination number and then bridges the calls to the mobile device and remote party to establish an end-to-end call path between the local and far ends of the call that traverses the home network.

Abstract: A mobile device utilizes a two-stage dialing solution when roaming on a visited mobile operator (MO) network to implement centralized routing so that a home network portion of a hybrid network is inserted into the path of outbound calls. A remote centralized routing (CR) service interoperates with a CR client on the mobile device. When a call is initiated to a remote party, the CR client calls into an arbitrary roaming routing number that is terminated in the home network. Once the call is connected between the mobile device and home network, the CR client sends a dialing string that includes a destination number of the remote party. The CR service calls the destination number and then bridges the calls to the mobile device and remote party to establish an end-to-end call path between the local and far ends of the call that traverses the home network.

Abstract: A visual voicemail (VVM) service uses the MMS (Multimedia Message System) system as a transport mechanism to deliver a voicemail payload to a client VVM application on a mobile device such as a cellular phone or smartphone. The payload is identified as a voicemail using a specific identifier included in a WAP (Wireless Application Protocol) Push message that provides a URL (Uniform Resource Locator) that the VVM client application follows to download the voicemail as an attachment to an MMS message from the VVM service. Regular MMS messages that are not associated with the specific identifier are handled by a conventional messaging application on the mobile device while VVM messages are handled by the client VVM application for presentation in visual form on a user interface supported by the mobile device.