OmniCare EVC SystemInstallation & Commissioning Manual10 OmniCare issue 1COM MUNICATIONS1.3.3 “All Call” and “Speak” ButtonsFigure 1.10 — “All Call” and “Speak” Buttons1.3.4 Handset “Speak” ButtonFigure 1.11 — Handset Speak ButtonThis button operates the “Speak” function to enablecommunication to the selected Remote Unit.This is the same as the “Speak” button on the control panel.Pressing this button stops the voice-switching function and makesthe conversation PTT controlled. This can be useful if there is ahigh level of ambient noise at the control panel.1 Will illuminate to show the "All" button (2) is being pressed2 Press to speak to All Occupied Remote Units, all FireTelephones and all Combined Refuge Remotes3 Indicates speech level of the handset.For clearest speech avoid lighting the yellow LED.4 Will illuminate to show either the "Speak" button on the panel(5) or the "Speak" button on the Handset has been pressed5 Press to speak to the Selected Occupied Remote Unit.Pressing this button stops the voice-switching function and makes theconversation PTT controlled from the control panelN OTE : The Speech Level Indicator (3) is permanently "live", even whenthe Handset is not picked up or in use.This is due to continuous monitoring of the microphone capsule.
