User guide

Integrity Voice Alarm Routing Matrix

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Politeness

Integrity audio inputs are prioritised. Sometimes it is necessary to override that priority structure so that a higher

priority unit (usually a paging console) does not override a lower priority unit.

A typical instance of this would be with two GPI cards that are meant to operate on a first come first served basis.

Under normal circumstances the higher priority one will interrupt the lower priority one.

To overcome this you may use a politeness level. A way to think about this is that although the higher priority unit

could theoretically cut in over the lower priority unit, it is 'polite enough' not to.

As a real example, suppose that you have two GPI cards, one at priority three and one at priority two. Normally the

priority two panels will override the priority three panels, but if you set the politeness level on the second GPI card to

3, then it will not interrupt the panel on priority 3.

What then, you may ask, is the difference between setting this value and simply changing the priority to two? In

practice there is virtually no difference, but no two slots in Integrity may adopt the same priority (this rule removes any

possible unintentional ambiguity in operation) and if two panels on different cards were to attempt to page the same

area(s) simultaneously the higher priority card would take preference.