Hands-free Beltpack usage with VOX activation and Audio Gating

In this article I will show how to set up a belt pack system for hands-free use, using the VOX Action in Attached Control Options. This guide also applies to any other port type capable of VOX Activation.

In this example, there are 2 teams, each with their own fixed group, and 3 beltpack users in each team. These users are able to talk hands-free to other users within the same fixed group by using VOX activation in conjunction with the Audio Gating feature.

Creating Belt pack Roles/Fixed Groups:

Start by creating Beltpack Roles and Fixed Groups for each of the Team members / Teams:



  3. Attach the belt pack roles we created to their corresponding Fixed Group.

Creating Loopback ports:

Loopback ports are necessary to add VOX functionality to the belt packs. We will need to create a loopback port for each beltpack.


Note. A loopback port is created by physically connecting the matrix port output to the matrix port input.

Creating Routes:

We can now create the routes that will be activated when VOX is present on the loopback port’s input:

  1. Route Origin = Loopback port with VOX Action. Route Target = Team Fixed Group.

 Creating Controls:

Next, we will create the Controls and attach the routes as members from the Available list:



Attaching Controls to VOX Actions:

Next, we will attach the Controls to the VOX Action in the Attached Control Options in Loopback port’s Properties. Here we can also activate the Audio Gating feature and set the desired Audio Detection Release Delay and Audio Detection Threshold:



Allowing Eavesdropping:

  1. In the Properties page in Beltpack Roles, under Panel Options, select Eavesdropping for each Beltpack. This will allow the other Beltpacks to listen to this mic without user user having to open the mic.


Local Advanced Forced/Blocked Listen:

  1. In Local Advanced we will create Forced Listen crosspoints from the Beltpack to the Beltpack’s loopback ports so that a permanent route is made without the user having any input.


  2. We can also create Blocked Listen crosspoints from the Loopback port to the beltpack if the user does not want to hear their own voice in their headset.


Panel Programming:

It is optional to populate the front panel with keys as all the routes have been preset and will trigger on VOX.


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