Matrix: Activating remote microphones on a V-series panel

You can use logic to activate a remote mic and therefore initiate a two-way conversation without the target panel user having to push a button. There are several similar ways of doing this but here are two: 

In both cases, the target panel must have Eavesdropping and Auto Listen enabled. These are found in panel properties of cards and ports. 

The microphone of the remote panel needs to be activated. This can be done using Logic Maestro. 

To activate panel mic with a control using logic, use the following: