A server transmits a task to client devices using push-to-talk (PTT). The server receives a response accepting the task from a device of the client devices. The server assigns the task to a user of the device. The server transmits an indication that the task was assigned to the user of the device to at least a subset of the client devices.

A method of managing access to a push-to-talk-over-cellular (POC) talkgroup may include providing a control device configured to manage a first talkgroup, granting a first non-subscriber device access to the first talkgroup, and transmitting, from the control device to the first non-subscriber device, a first communication including a link to download a POC software application configured to access the first talkgroup. A method of managing access to a push-to-talk-over-cellular (POC) talkgroup may alternatively include providing a control device configured to manage a first talkgroup, providing a first subscriber device, transmitting, from the first subscriber device to the control device, first non-subscriber contact information associated with a first non-subscriber device, and granting the first non-subscriber device access to the first talkgroup.

A method of managing access to a push-to-talk-over-cellular (POC) talkgroup may include providing a control device configured to manage a first talkgroup, granting a first non-subscriber device access to the first talkgroup, and transmitting, from the control device to the first non-subscriber device, a first communication including a link to download a POC software application configured to access the first talkgroup. A method of managing access to a push-to-talk-over-cellular (POC) talkgroup may alternatively include providing a control device configured to manage a first talkgroup, providing a first subscriber device, transmitting, from the first subscriber device to the control device, first non-subscriber contact information associated with a first non-subscriber device, and granting the first non-subscriber device access to the first talkgroup.

A wireless communication system includes a base station and direct wave communication stations that communicate with the base station. At least one of the base station and the direct wave communication stations includes a number-of-bands switching unit that switches, on the basis of a communication state, a number of bands for direct wave communication, by dividing a band for direct wave communication. One of the plurality of direct wave communication stations receives a narrowband carrier in the divided band.

A wireless communication system includes a base station and direct wave communication stations that communicate with the base station. At least one of the base station and the direct wave communication stations includes a number-of-bands switching unit that switches, on the basis of a communication state, a number of bands for direct wave communication, by dividing a band for direct wave communication. One of the plurality of direct wave communication stations receives a narrowband carrier in the divided band.

Systems and methods for providing headset/ear bud voice control to crew members in a quick-service restaurant are disclosed. Exemplary implementations may: transmit transmission signals from a headset to the base station, receive reception signals by the headset from the base station; capture audio information from a first crew member, generate sound based on the received reception signals, generate the transmission signals to form a headset-specific uplink packet based on the captured audio information; generate semantic information based on the headset-specific uplink packet, wherein the semantic information includes one or more individual words; determine one or more commands that modify operation of the communication system, based on the semantic information, and facilitate execution of the one or more commands to control and/or modify the operation of the communication system.

Various embodiments provide a multi-audio input, stereo audio output, push-to-talk (PTT) switch device. The device may include an audio processing unit configured to perform spatial separation/positioning for one or a plurality of audio sources. The audio processing unit of the device may apply unique head-related transfer functions (HRTFs) to produce left and right audio outputs that correspond to predetermined or dynamically positioned spatial locations for each of the incoming audio streams.

Various embodiments provide a multi-audio input, stereo audio output, push-to-talk (PTT) switch device. The device may include an audio processing unit configured to perform spatial separation/positioning for one or a plurality of audio sources. The audio processing unit of the device may apply unique head-related transfer functions (HRTFs) to produce left and right audio outputs that correspond to predetermined or dynamically positioned spatial locations for each of the incoming audio streams.

A land mobile radio (LMR) device may be used with a cellular device in communication with a push-to-talk-over-cellular (POC) network. The LMR device may include an LMR processor, an LMR memory, an LMR local communication interface configured to communicate with the cellular device, and a channel selection input. The LMR processor may be configured to retrieve channel configuration information defining one or more POC channels from the cellular device via the LMR local communication interface and store the channel configuration information in the LMR memory. The channel selection input may be configured to select a selected channel from the one or more POC channels defined by the channel configuration information. The LMR local communication interface may be configured to communicate with the POC network over the selected channel via the cellular device.

A land mobile radio (LMR) device may be used with a cellular device in communication with a push-to-talk-over-cellular (POC) network. The LMR device may include an LMR processor, an LMR memory, an LMR local communication interface configured to communicate with the cellular device, and a channel selection input. The LMR processor may be configured to retrieve channel configuration information defining one or more POC channels from the cellular device via the LMR local communication interface and store the channel configuration information in the LMR memory. The channel selection input may be configured to select a selected channel from the one or more POC channels defined by the channel configuration information. The LMR local communication interface may be configured to communicate with the POC network over the selected channel via the cellular device.