Advanced GPIO (Zenitel Connect)

The Advanced GPIO functionality is typically used when Zenitel Connect is integrated with a PA or PAGA system and acoustic feedback may occur because an operator intercom is located close to overhead loudspeakers. In PAGA installations, this is commonly referred to as Local Mute, where loudspeakers near the operator position are temporarily muted during live announcements.

To implement Local Mute, one or more GPOs (relay outputs) can be connected to the external PA/PAGA system and used to mute the affected loudspeakers while an announcement is in progress.

The Advanced GPIO functionality supports several trigger conditions, including the two scenarios described below.

Common use cases

Local Mute Triggered by a Specific Operator Intercom

This scenario is used when an operator intercom is located close to overhead loudspeakers and there is a risk of acoustic feedback during live announcements.

A relay output is activated only while announcements are initiated from a designated operator intercom. The relay can be connected to the PAGA system to temporarily mute loudspeakers in the vicinity of that operator position. This provides a Local Mute function without affecting loudspeakers in other areas.

Typical use case: Prevent acoustic feedback for a control room operator while maintaining normal audio levels throughout the rest of the facility.

Relay Activation Triggered by a Broadcast Group

This scenario is used when a relay output should follow the activity of a specific broadcast group.

A relay output is activated whenever a designated broadcast group is active. The relay can be connected to an external PA or PAGA system for functions such as zone selection, audio routing, amplifier control, or other external actions associated with the selected broadcast area.

Typical use case: Automatically activate a specific PA zone or external equipment whenever announcements are made to a particular broadcast group.

Configuration

Local Mute

Navigate to Features > Advanced GPIO.

Select the device that provides the relay output.
Select the required GPO/Relay from the list.
In the GPO Rules pane, click the + icon to add a new rule.
Select the Outgoing Broadcast from Device rule type.
From the Directory Number drop-down list, select the operator intercom that should trigger the relay.
Set the desired GPO State:

On - The relay remains activated while the operator initiates a live broadcast.
Slow Flash - The relay output flashes at a slow rate while the operator initiates a live broadcast.
Fast Flash - The relay output flashes at a fast rate while the operator initiates a live broadcast.

When the selected operator intercom initiates a live broadcast, the configured relay output will be activated according to the selected GPO state.

Note: Multiple rules can be configured for the same GPO/Relay, allowing a single relay output to be activated by multiple operator intercoms. The relay will be activated whenever any of the configured operator intercoms performs a live broadcast.

Relay 3 on IP-LCM 411 is triggered whenever operator 146 initiates a live broadcast

Relay Triggered by a Broadcast Group

Navigate to Features > Advanced GPIO.

Select the device that provides the relay output.
Select the required GPO/Relay from the list.
In the GPO Rules pane, click the + icon to create a new rule.
Select the Incoming Broadcast to Group rule type.
From the Directory Number drop-down list, select the broadcast group that should trigger the relay.
Set the desired GPO State:

On - The relay remains activated while the broadcast group is active.
Slow Flash - The relay output flashes at a slow rate while the broadcast group is active.
Fast Flash - The relay output flashes at a fast rate while the broadcast group is active.

When an announcement is made to the selected broadcast group, the configured relay output will be activated according to the selected GPO state.

Note: Multiple rules can be configured for the same GPO/Relay, allowing a single relay output to be activated by multiple broadcast groups.

Relay 2 on IP-LCM 411 is triggered when broadcast group 842 is active

Advanced GPIO (Zenitel Connect)

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