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.

Reliable call hand-offs from a cellular network to a Wi-Fi network. A hand-off controller detects a hand-off condition (e.g., hand-off request, potential/predicted hand-off request) and, in response, initiates a test call. For example, a telephone call made through a smart phone, using a cellular network (e.g., Verizon, AT&T or Sprint) can be handed over to a hot spot at a Starbucks. In response to detecting an available data network, transmission quality for VOIP conditions is automatically tested. If the network conditions meet a certain predetermined threshold, the VOIP hand-off is executed. If the predetermined threshold is not met, the VOIP hand-off may not be executed, or may be delayed.

A mobile communication device including a first RF device, a second RF device, and a controller is provided. The first and second RF devices perform wireless transmission and reception utilizing a first RAT and a second RAT, respectively. The controller detects, during a communication with a first cell using a first subscriber identity, an incoming event for making a voice call or conducting a data session using a second subscriber identity via the second RF device, and switches the communication associated with the first subscriber identity to a second cell which utilizes the first RAT in a frequency band on which dual connectivity over the first and second RATs is supported, or enables the voice call associated with the second subscriber identity to be made via the first RF device when the communication associated with the first subscriber identity is performed via the second RF device.

Systems and methods discussed herein are directed to managing customer Subscriber Identity Module (SIM) and embedded SIM (eSIM) profiles and allocated Mobile Station International Subscriber Directory Numbers (MSISDN) for connected devices, e.g., cars, in different use-cases. For example, in configurations, users may have a primary electronic device, e.g., a mobile phone having a primary MSISDN.sub.PRIMARY that is instantiated on a primary Integrated Circuit Card Identifier (ICCID), ICCID.sub.PRIMARY in the billing system of a wireless communication network. When the user has a secondary device paired with the mobile phone, that secondary device may have a secondary MSISDN.sub.ECONDARY that is activated with a secondary ICCID.sub.SECONDARY in the billing system. Thus, the secondary device may be used by the user in conjunction with the primary device and is paired with the primary device such that incoming calls are forked to both the primary device and the secondary device.

An electronic device is disclosed. In addition, various embodiments recognized through the specification are possible. The electronic device includes a communication module, a processor operatively connected with the communication module, and a memory operatively connected with the processor. The memory includes instructions, when executed by the processor, causing the processor to receive information associated with a SIM of another electronic device from the other electronic device via the communication module, receive a user input requesting a voice call for a first SIM of the other electronic device, and transmit a message requesting a voice call for a second SIM of the other electronic device to an IMS server via the communication module based on the information associated with the SIM.

A method applicable to a multi-subscriber identity module (SIM) call management process includes parsing, by a managed device, an incoming call to obtain call information, determining a communications circuit corresponding to a called identifier, and when the managed device has performed an incoming call shielding setting on the communications circuit in response to a remote management instruction sent by an entitlement server (ES), skipping responding, by the managed device, to an incoming call event, or receiving, by the server, a remote management instruction from the ES, and deleting or freezing routing information corresponding to an identifier in response to the remote management instruction such that a communications circuit corresponding to the identifier in the managed device is unable to respond to an incoming call event.

A mobile communication device including a first RF device, a second RF device, and a controller is provided. The first and second RF devices perform wireless transmission and reception utilizing a first RAT and a second RAT, respectively. The controller detects, during a communication with a first cell using a first subscriber identity, an incoming event for making a voice call or conducting a data session using a second subscriber identity via the second RF device, and switches the communication associated with the first subscriber identity to a second cell which utilizes the first RAT in a frequency band on which dual connectivity over the first and second RATs is supported, or enables the voice call associated with the second subscriber identity to be made via the first RF device when the communication associated with the first subscriber identity is performed via the second RF device.

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 terminal can have at least one audio interface for at least one microphone, at least one audio interface for at least one speaker, an operator control module and at least one interface for connecting to at least one telephony- and/or IP-telephony-compatible terminal. The terminal can be configured as a media hub for the at least one telephony- or IP-telephony-compatible terminal. The terminal can have a media processing unit for mixing and a media hub controller or controlling media streams received by the at least one telephony- or IP-telephony-compatible terminal and the at least one telephony- or IP-telephony-compatible terminal can be operated through the operator control module of the telecommunication terminal. A method for controlling media streams through a media hub controlled integrated into a telecommunication terminal is also disclosed.

A method applicable to a multi-subscriber identity module (SIM) call management process includes parsing, by a managed device, an incoming call to obtain call information, determining a communications circuit corresponding to a called identifier, and when the managed device has performed an incoming call shielding setting on the communications circuit in response to a remote management instruction sent by an entitlement server (ES), skipping responding, by the managed device, to an incoming call event, or receiving, by the server, a remote management instruction from the ES, and deleting or freezing routing information corresponding to an identifier in response to the remote management instruction such that a communications circuit corresponding to the identifier in the managed device is unable to respond to an incoming call event.