User guide
Integrity Voice Alarm Routing Matrix
In order to help configure a unit, the buttons on a panel are sorted by type on the Cause and Effects page. Each card
type is separated by a red horizontal line and each button type by a blue one.
The Group or Zonal buttons are shown first (the ones with the check boxes in the cause and effects matrix above),
then the Modal buttons, and finally the Function Buttons.
The Group buttons have simple check boxes that decide where an audio source is routed to. Which audio source is
routed there is decided by the modal buttons. In the example above this routing can be simple (like the PTT) or
complex (like button 7).
As an example, suppose buttons 20 and 21 are pressed. On their own they do nothing, but if the PTT button is
pressed, paging is routed to zones 3 and 4. On the other hand, if button 7 were pressed instead, the first Emergency
message (symbolised by the red bell) would be routed to zone 3 and the second emergency message (symbolised by
the red lamp) would be routed to zone 4.
Group Buttons
A Group or Zonal button is used in conjunction with a modal button to change the mode of a zone or group of zones,
either (for example) to page to that area or send BGM to an area, or indeed a pre-recorded message to that area.
For a full description of how group buttons and modal buttons work together, please see the modal buttons topic.
How an MPC Handles Multiple Integrity Units
The diagram above shows four Integrity mainframes and two MPC consoles connected in a chain.
Each GPI card and MPC console has a unique address. Each MPC talks to each GPI card in turn. Initially each
console gets configuration data from each Integrity mainframe and combines all the information to decide how each
button should operate. Then when a button (or combination of buttons) is pressed, it will use each Integrity
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