A user equipment (UE), which is able to use a plurality of different wireless access technologies, receives a request to establish a voice call. In response to the request, the UE determines whether voice over a first wireless access technology of the different wireless access technologies is supported, and responsive to determining that voice over the first wireless access technology is not supported, the UE attempts to establish the voice call over a second wireless access technology of the different wireless access technologies.

The subject of the present invention is a method for managing the reception of a telephone call signal on a communication terminal, with a view to the establishment of a telephone link, said telephone link being established by way of a server, said called communication terminal being able to receive the telephone call signal according to at least two modes, comprising a voice mode, in which the telephone link between the called communication terminal and the server is ensured by way of a telephone communication network, and a data mode, in which the telephone link between the called communication terminal and the server is ensured by way of a network for data communication according to a Voice over IP technology, said method comprising the direct selection, by the user of the method, of the mode of establishment of the telephone link. The method comprising the allocating by a call server of a temporary number to the calling communication terminal.

A mobile device executes an operating system (OS) call manager and an over-the-top (OTT) calling application. The OTT calling application receives a notification for a first OTT call, and notifies the OS call manager of the first OTT call. The OS call manager assigns shared device resources of the mobile device to the first OTT call. The OTT calling application receives a notification for a second OTT call, and sends, to an OTT Telephony Application Server (TAS) without notifying the OS call manager of the second OTT call, a request to switch from the first OTT call to a second OTT call. The OTT calling app identifies the first OTT call as inactive and the second OTT call as active, and allocates the shared device resources assigned to the first OTT call to the second OTT call.

According to one embodiment, system includes a receiver and electronic circuitry. The electronic circuitry configured to determine whether the first user is present near a first apparatus of apparatuses, determine whether the first user is present near a second apparatus of the apparatuses, establish a first communication route with the first apparatus for the communication with the first user in response to the request, if it is determined that the first user is present near the first apparatus, and establish a second communication route with the second apparatus for the communication with the first user in response to the request, if it is determined that the first user is present near the second apparatus.

The present invention provides an apparatus and method for a voice communication control in a fixed-mobile convergence system, which can efficiently control, at the time of providing a fixed-mobile convergence service in the fixed mobile convergence system, a call path for a voice communication outgoing from or incoming to a user terminal, thereby optimizing call cost and call quality.

A mobile device executes an operating system (OS) call manager and an over-the-top (OTT) calling application. The OTT calling application receives a notification for a first OTT call, and notifies the OS call manager of the first OTT call. The OS call manager assigns shared device resources of the mobile device to the first OTT call. The OTT calling application receives a notification for a second OTT call, and sends, to an OTT Telephony Application Server (TAS) without notifying the OS call manager of the second OTT call, a request to switch from the first OTT call to a second OTT call. The OTT calling app identifies the first OTT call as inactive and the second OTT call as active, and allocates the shared device resources assigned to the first OTT call to the second OTT call.

A user equipment (UE), which is able to use a plurality of different wireless access technologies, receives a request to establish a voice call. In response to the request, the UE determines whether voice over a first wireless access technology of the different wireless access technologies is supported, and responsive to determining that voice over the first wireless access technology is not supported, the UE attempts to establish the voice call over a second wireless access technology of the different wireless access technologies.

The systems, devices, and techniques described herein are directed to scheduling wireless communications and verifying connections, for example, in an emergency call context. An emergency call scheduler can be installed in an application layer of user equipment to manage call scheduling. During an emergency situation, the emergency call scheduler can attempt to establish a communication based on a priority of network technologies (e.g., LTE, 4G, 3G, 2G) or a base station being in a subscriber network. As a call is established, a connection may be verified based at least in part on satisfying one or more handshake protocols and based at least in part on transmitting or receiving voice and/or data packets. Based on a location of the user equipment, or as a network topology is updated, a centralized server can update the emergency call scheduler to change the call scheduling priority.

A computer-implemented method for establishing a VOIP communication between a PBX system and a first terminal device is disclosed. The first terminal device has a VOIP application or video call application. The PBX system and the first terminal device are able to communicate via a first communication connection and a second communication connection. When the PBX system receives a call to be forwarded to the first terminal device the PBX system verifies whether the first terminal device is logged in. If the PBX system verifies that the first terminal device is not logged in, the call is rejected. If the PBX system verifies that the first terminal device is logged in, the PBX system determines whether the application on the first terminal device is running in a background mode or in a foreground mode. When the PBX system determines that the application is running in the foreground mode, the PBX system uses the first connection for forwarding the call. When the PBX system determines that the application is running in the background mode the PBX system uses the second connection to receive information about the communication connection being used.

Techniques for location based number management are described. Generally, a number refers to a set of characters that can be used to initiate communication with a particular resource. In at least some implementations, a number refers to a telephone number that can be dialed to participate in a call between different users. According to various implementations, techniques described herein enable various policies pertaining to the use of telephone numbers at different locations to be enforced. For instance, techniques for location based number management enable a location of a client device to be tracked, and the location to be used for enforcing application location-based policies.