Create a Push to Talk Button for a Harding DXL Master Station

The Harding DXL Master Stations can call intercoms. You may not want to have the Master Station sending audio to the intercom the entire time (i.e., for two-way communication). In this case, you can create a push to talk button to only send the audio from the Master Station while the button is being held down. In this example, we are creating a button which triggers the Push to Talk commands on the currently selected Harding DXL Master Station. There are two main Workflows which need to be created: one to start the audio when the button is pushed, and another to stop the audio when the button is released.

Before creating these Workflows, a you need to:
  • Add a button to the Map or Display Layout you want it to appear on.
  • Add the Start Push to Talk and Stop Push to Talk commands to the Master Station asset command table.

Create Start Push to Talk Workflow

The Start Push to Talk Workflow is triggered when a button is pushed. It allows for audio to go through from the Master Station to an intercom.

To create the Workflow which starts the Push to Talk process:

  1. In Project Explorer, right-click Background Workflows> and select Add.
  2. Double-click the Start, then click Add to open the trigger browser.
  3. Navigate to the Map or Display Layout the button has been added to and select it.
  4. In the Events pane, select Button Down and click OK.
  5. Add an Action block to the Workflow and connect it to the Start and Stop blocks.
  6. Double-click the Action block to open the Action Browser. Configure the command:
    1. In the Objects pane, navigate to Integrated Systems > Harding DXL.
    2. In the Commands pane, select Execute Asset Command.
    3. In the Expression pane click Command, select Start Push to Talk and click OK.
    4. In the Expression pane click Selected Asset IDs > Advanced > Display Layout. Double-click Selected asset Ids, then click OK.
    5. Click OK.

When the button is pushed down, it will allow audio to play from the Master Station to an intercom.

Create Stop Push to Talk Workflow

The Stop Start Push to Talk Workflow is triggered when a pushed button is released. It allows for audio to stop going through from the Master Station to an intercom.

To create the Workflow which stops the Push to Talk process:

  1. In Project Explorer, right-click Background Workflows> and select Add.
  2. Double-click the Start, then click Add to open the trigger browser.
  3. Navigate to the Map or Display Layout the button has been added to and select it.
  4. In the Events pane, select Button Up and click OK.
  5. Add an Action block to the Workflow and connect it to the Start and Stop blocks.
  6. Double-click the Action block to open the Action Browser. Configure the command:
    1. In the Objects pane, navigate to Integrated Systems > Harding DXL.
    2. In the Commands pane, select Execute Asset Command.
    3. In the Expression pane click Command, select Stop Push to Talk and click OK.
    4. In the Expression pane click Selected Asset IDs > Advanced > Display Layout. Double-click Selected asset Ids, then click OK.
    5. Click OK.

When the button has been released, this will stop audio from playing from the Master Station to the intercom.