Functional description of Talkback system
Case 1 : Sequential Operation of the Talkback System
1.Signaling (Call Initiation):
– The occupant presses the “Call” button on the Talkback Speaker.
– The system sends an emergency signal to the control panel, displaying the location of the activated speaker.
– The “Call” indicator on the Talkback Speaker lights up to confirm the signal has been sent.
2.Call Acknowledgement:
– Fire command personnel acknowledge the call via the control panel.
– The control panel sends an acknowledgment signal back to the Talkback Speaker, changing its indicator to “Activated.”
3.Two-Way Communication (Talk Mode):
– Full-duplex communication is established between the fire command station and the Talkback Speaker.
– Fire command personnel can listen to and speak with the occupant.
– The control panel manages communication, allowing personnel to interact with multiple Talkback Speakers as needed.
Case 2 : Sequential Operation of Talkback System (Control Panel Calling Target Speaker)
1.Initiating the Call from Control Panel:
– Fire command personnel select the target Talkback Speaker from the control panel interface.
– The control panel sends a signal to the chosen Talkback Speaker, initiating a call.
– The selected Talkback Speaker activates and the “Call” indicator on the unit lights up, indicating that it is being called.
2.Speaker Acknowledgement:
– The occupant receives the call signal on the Talkback Speaker and is notified by the illuminated “Call” indicator.
– The occupant presses the “Press-to-Talk” button to acknowledge the call, activating the microphone.
– The control panel displays that the call has been acknowledged and two-way communication can begin.
3.Two-Way Communication (Talk Mode):
– Once acknowledged, full-duplex communication is established between the control panel and the Talkback Speaker.
– Fire command personnel can speak to the occupant via the control panel, while also listening to their responses from the speaker’s microphone.
– The control panel allows fire command personnel to monitor, manage, and communicate with the selected Talkback Speaker or multiple speakers as needed.
4.Ending Communication:
– After the conversation is completed, the control panel sends a reset signal to the Talkback Speaker, returning it to standby mode.
– The “Talk” indicator on the Talkback Speaker turns off, signaling the end of communication.
– The control panel confirms the reset and the system returns to its idle state, ready for further interaction if needed.
Case 3 : Sequential Operation of Talkback System (Control Panel Calling 2 Target Speakers)
1.Initiating the Call from Control Panel:
– Fire command personnel select two target Talkback Speakers from the control panel interface.
– The control panel sends call signals to both selected Talkback Speakers simultaneously, initiating calls to the two units.
– The “Call” indicators on both Talkback Speakers light up, indicating that they are being called.
2.Speaker Acknowledgement:
– The occupants of the two Talkback Speakers receive the call signals, and the “Call” indicators on both speakers light up.
– Each occupant presses the “Press-to-Talk” button on their respective Talkback Speakers to acknowledge the call, activating the microphone.
– The control panel displays that both calls have been acknowledged, and two-way communication is ready to begin.
3.Two-Way Communication (Talk Mode):
– Full-duplex communication is established between the control panel and both Talkback Speakers.
– Fire command personnel can speak to and listen to both occupants at the same time.
– The control panel manages communication with both speakers simultaneously, allowing personnel to interact with multiple areas or occupants as needed.
– Fire command personnel can choose to address each speaker individually or broadcast to both speakers simultaneously.
4.Ending Communication:
– After the conversation is complete, the control panel sends a reset signal to both Talkback Speakers, returning them to standby mode.
– The “Talk” indicators on both speakers turn off, signaling the end of communication.
– The control panel confirms the reset of both speakers, and the system returns to its idle state, ready for future use.