The present disclosure relates to an apparatus and a method for managing a Mission Critical Push-to-Talk (MCPTT). The apparatus comprises: a first MCPTT client configured to send an MCPTT request message to a second MCPTT client through a MCPTT server, and receive, from the second MCPTT client through the MCPTT server, a MCPTT response message in response to the MCPTT request message, wherein an MCPTT call in the MCPTT service is established between the first MCPTT client and the second MCPTT client by the MCPTT server.

The present disclosure relates to an apparatus and a method for managing a Mission Critical Push-to-Talk (MCPTT). The apparatus comprises: a first MCPTT client configured to send an MCPTT request message to a second MCPTT client through a MCPTT server, and receive, from the second MCPTT client through the MCPTT server, a MCPTT response message in response to the MCPTT request message, wherein an MCPTT call in the MCPTT service is established between the first MCPTT client and the second MCPTT client by the MCPTT server.

Communications channels between systems can be managed such that unnecessary use of the channels is limited. A computer system can initiate a request to establish communications channels between a client device and the computer system. A notification is sent to the client device, which causes the client device to prompt the user to either accept the request or reschedule the requested establishing of the communications channel.

Communications channels between systems can be managed such that unnecessary use of the channels is limited. A computer system can initiate a request to establish communications channels between a client device and the computer system. A notification is sent to the client device, which causes the client device to prompt the user to either accept the request or reschedule the requested establishing of the communications channel.

A first communication device includes a memory and a processor coupled to the memory. The processor is configured to receive, during a first call with a second communication device, an indication of a second call from a third communication device. The processor is further configured to monitor the first call, in response to the indication of the second call, for a pause in speech of at least a threshold duration. The processor is further configured to initiate, in response to detecting the pause in speech of at least the threshold duration, an audio message indicating call information associated with the second call.

A first communication device includes a memory and a processor coupled to the memory. The processor is configured to receive, during a first call with a second communication device, an indication of a second call from a third communication device. The processor is further configured to monitor the first call, in response to the indication of the second call, for a pause in speech of at least a threshold duration. The processor is further configured to initiate, in response to detecting the pause in speech of at least the threshold duration, an audio message indicating call information associated with the second call.

The invention concerns a method for establishing a telecommunication connection between a calling subscriber (1) and a target subscriber (5), in which a calling terminal (R) of the calling subscriber (1) and a target terminal (Z) of the target subscriber (5) are assigned to a switching unit (100) and the calling subscriber (1) enters a callback request (CCBS-REQ, CCNR-REQ) in the switching unit (100) if the target terminal (Z) is busy or cannot be reached when a first call is made from the calling terminal (R) to the target terminal (Z), in which configuration data regarding the accessibility of the target subscriber (5) for a callback are entered into the switching unit (100). Then the time is set for the switching unit (100) to make the pending callback (RC) to the calling subscriber (1) in order to generate a second call to the target subscriber (5) by processing the configuration data concerning the accessibility of the target subscriber (5) for a callback, at a time when the target subscriber (5) is reachable for a callback. Next, the switching unit (100) makes the pending callback (RC) to the calling subscriber (1) at the set time.

The invention concerns a method for establishing a telecommunication connection between a calling subscriber (1) and a target subscriber (5), in which a calling terminal (R) of the calling subscriber (1) and a target terminal (Z) of the target subscriber (5) are assigned to a switching unit (100) and the calling subscriber (1) enters a callback request (CCBS-REQ, CCNR-REQ) in the switching unit (100) if the target terminal (Z) is busy or cannot be reached when a first call is made from the calling terminal (R) to the target terminal (Z), in which configuration data regarding the accessibility of the target subscriber (5) for a callback are entered into the switching unit (100). Then the time is set for the switching unit (100) to make the pending callback (RC) to the calling subscriber (1) in order to generate a second call to the target subscriber (5) by processing the configuration data concerning the accessibility of the target subscriber (5) for a callback, at a time when the target subscriber (5) is reachable for a callback. Next, the switching unit (100) makes the pending callback (RC) to the calling subscriber (1) at the set time.

A system, method and program product for electronic communication includes checking if a current called number of a subscriber is on a list of unsuccessful calls made by an onward caller. A determination is made that the current called number is on the list of unsuccessful calls. A calling route used to establish a connection between onward caller and subscriber is concluded as a low-quality route. A subscriber ID is extracted and included on the list of low quality routes. A request is made for a list of all possible routes for communication between onward caller and receiver user. A comparison list of all possible routes and low quality routes is made. A route not earlier marked as a low-quality route is identified and selected as an alternative route. An electronic communication between onward caller and receiving user is established using the alternative route.

A system, method and program product for electronic communication includes checking if a current called number of a subscriber is on a list of unsuccessful calls made by an onward caller. A determination is made that the current called number is on the list of unsuccessful calls. A calling route used to establish a connection between onward caller and subscriber is concluded as a low-quality route. A subscriber ID is extracted and included on the list of low quality routes. A request is made for a list of all possible routes for communication between onward caller and receiver user. A comparison list of all possible routes and low quality routes is made. A route not earlier marked as a low-quality route is identified and selected as an alternative route. An electronic communication between onward caller and receiving user is established using the alternative route.