According to one embodiment, a signal processing apparatus includes processing circuitry. The processing circuitry correlates a plurality of communication terminals as a group. The processing circuitry assigns a first transmission right to one of the communication terminals in the group and a second transmission right to one of the communication terminals in the group. The processing circuitry transmits, through a first channel, image data transmitted from the communication terminal which is assigned with the first transmission right to the other communication terminals in the group. The processing circuitry transmits, through a second channel, voice data transmitted from the communication terminal which is assigned with the second transmission right to the other communication terminals in the group. The processing circuitry is configured to permit a single communication terminal to be assigned with both the first and second transmission rights.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Embodiments herein provide a system for establishing a first-to-answer call in a Mission Critical Push to Talk (MCPTT) communication. The system includes a MCPTT originating client configured to initiate a first-to-answer call and transmit a first-to-answer call request to a MCPTT server. The system includes the MCPTT server configured to receive the first-to-answer call request from the MCPTT client.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein disclose methods and systems for providing support for ad hoc group calls in mission critical services. The method includes listing, by an MCPTT client, a list of MCPTT participants or a functional alias to initiate an ad hoc group call in a MCX on network. The method further includes initiating, by the MCPTT client, the ad hoc group call with a list of MCPTT participants or the functional alias by sending a group call request to an MCPTT server.

A system and method are provided for configuring a SP based AGGREGATION DEVICES allowing the seamless creation of a secondary audio path(s), consisting of: i) Cellular device software to support selection of one or more alternate audio paths ii) User configuration FOR the AGGREGATION DEVICE TO maintain THE default secondary audio path iii) The cellular device application maintains the connection(s) to the SIP based AGGREGATION DEVICE AS WELL AS THE SELECTION AND TRANSFER BETWEEN AGGREGATION DEVICES. (FOR EXAMPLE IN A FEDERAL ORGANIZATION THE TEMPORARY DEPLOYMENT OF PERSONNEL WOULD AUTOMATICALLY RESET THE AGGREGATION DEVICE.) iv) The cellular device application provides notification of events (conferences created by other users to support a specific type of response v) User selection of a conference tied to an event becomes the user's default secondary audio path vi) Selection of additional audio paths to be monitored vii) System records all incoming audio from all sources

A system and method are provided for configuring a SP based AGGREGATION DEVICES allowing the seamless creation of a secondary audio path(s), consisting of: i) Cellular device software to support selection of one or more alternate audio paths ii) User configuration FOR the AGGREGATION DEVICE TO maintain THE default secondary audio path iii) The cellular device application maintains the connection(s) to the SIP based AGGREGATION DEVICE AS WELL AS THE SELECTION AND TRANSFER BETWEEN AGGREGATION DEVICES. (FOR EXAMPLE IN A FEDERAL ORGANIZATION THE TEMPORARY DEPLOYMENT OF PERSONNEL WOULD AUTOMATICALLY RESET THE AGGREGATION DEVICE.) iv) The cellular device application provides notification of events (conferences created by other users to support a specific type of response v) User selection of a conference tied to an event becomes the user's default secondary audio path vi) Selection of additional audio paths to be monitored vii) System records all incoming audio from all sources

[Problem] When a communication apparatus that is the communication partner is called via a relay device, the transmission control mode of a voice signal can be switched according to the capability of the communication partner. [Solution] A relay device (2) includes a telephone relay unit (3), a network communication relay unit (4), and a wireless communication relay unit (5). The wireless communication relay unit (5) includes a plurality of external apparatus interfaces, and an analog repeater (25), a digital repeater (27), or the like is connected to each external apparatus interface. If an SIP telephone (20) has called an analog transceiver (27), the relay device (2) obtains the address and apparatus type of the analog transceiver (27) from call information, and transmits a voice signal to the analog transceiver (27) using a transmission control mode (VOX mode) that suits the analog transceiver (27).

According to various embodiments, an electronic device comprising a processor, a communication module circuitry operatively connected to the processor, and an output device operatively connected to the processor may be provided. The processor may be configured to activate a first channel for providing a push-to-talk (PTT) service and deactivate a second channel for providing the PTT service in a state in which the first channel and the second channel are generated, transmit a first message associated with the first channel including information indicating that the first channel is activated, through the communication module circuitry to a PTT server configured to provide the PTT service, transmit a second message associated with the second channel including information indicating that the channel is deactivated, through the communication module circuitry to the PTT server, output first media data associated with the first channel using first part of the output device.

Systems, methods, software and apparatus enable providing supplemental audio content to members of a communication group via a group communication service that manages the multiple member user nodes' transmission and receipt of communications between and among the member user nodes. A request for audio content (e.g., from the communication group or a member user node) causes the group communication service to launch a bot node member to locate and deliver the requested audio content. The audio content can be merged with user node communications (e.g., as transmission packets or as streaming audio content). In some implementations each user node includes a wearable push-to-talk end user device linked to a communication device executing a communication application connected to the group communication service.

Systems, methods, software and apparatus enable providing supplemental audio content to members of a communication group via a group communication service that manages the multiple member user nodes' transmission and receipt of communications between and among the member user nodes. A request for audio content (e.g., from the communication group or a member user node) causes the group communication service to launch a bot node member to locate and deliver the requested audio content. The audio content can be merged with user node communications (e.g., as transmission packets or as streaming audio content). In some implementations each user node includes a wearable push-to-talk end user device linked to a communication device executing a communication application connected to the group communication service.

The present disclosure describes methods and systems for establishing a Session Initiation Protocol Session. One method includes transmitting a first message requesting authentication configuration information; in response to the first message, receiving a second message that includes the authentication configuration information; transmitting a third message that includes authentication information based upon the received authentication configuration information; receiving an authentication challenge request that is formatted according to the second protocol; and in response to receiving the authentication challenge request, transmitting an authentication response to the second network node.