diff --git a/app/public/config/config.example.js b/app/public/config/config.example.js
index 7909284..3126613 100644
--- a/app/public/config/config.example.js
+++ b/app/public/config/config.example.js
@@ -52,26 +52,36 @@ var config =
 		noiseSuppression : true,
 		sampleSize       : 16
 	},
-	background       : 'images/background.jpg',
-	defaultLayout    : 'democratic', // democratic, filmstrip
+
+	/**
+	 * Set the auto mute / Push To Talk threshold
+	 * default value is 4
+	 * 
+	 * Set it to 0 to disable auto mute functionality, 
+	 * but use it with caution
+	 * full mesh audio strongly decrease room capacity! 
+	 */
+	autoMuteThreshold : 4, 
+	background        : 'images/background.jpg',
+	defaultLayout     : 'democratic', // democratic, filmstrip
 	// If true, will show media control buttons in separate
 	// control bar, not in the ME container.
-	buttonControlBar : false,
+	buttonControlBar  : false,
 	// If false, will push videos away to make room for side
 	// drawer. If true, will overlay side drawer over videos
-	drawerOverlayed  : true,
+	drawerOverlayed   : true,
 	// Timeout for autohiding topbar and button control bar
-	hideTimeout      : 3000,
-	lastN            : 4,
-	mobileLastN      : 1,
+	hideTimeout       : 3000,
+	lastN             : 4,
+	mobileLastN       : 1,
 	// Highest number of speakers user can select
-	maxLastN         : 5,
+	maxLastN          : 5,
 	// If truthy, users can NOT change number of speakers visible
-	lockLastN        : false,
+	lockLastN         : false,
 	// Add file and uncomment for adding logo to appbar
 	// logo       : 'images/logo.svg',
-	title            : 'Multiparty meeting',
-	theme            :
+	title             : 'Multiparty meeting',
+	theme             :
 	{
 		palette :
 		{
diff --git a/app/src/RoomClient.js b/app/src/RoomClient.js
index 2217d65..9635408 100644
--- a/app/src/RoomClient.js
+++ b/app/src/RoomClient.js
@@ -2960,7 +2960,9 @@ export default class RoomClient
 					if (!this._muted)
 					{
 						await this.enableMic();
-						if (peers.length > 4) 
+						const { autoMuteThreshold } = store.getState().settings;
+
+						if (autoMuteThreshold && peers.length > autoMuteThreshold) 
 							this.muteMic();
 					}
 
diff --git a/app/src/reducers/settings.js b/app/src/reducers/settings.js
index 1c375bf..f810d3a 100644
--- a/app/src/reducers/settings.js
+++ b/app/src/reducers/settings.js
@@ -20,6 +20,7 @@ const initialState =
 	notificationSounds  : true,
 	buttonControlBar    : window.config.buttonControlBar || false,
 	drawerOverlayed     : window.config.drawerOverlayed || true,
+	autoMuteThreshold   : window.config.autoMuteThreshold || 4,
 	...window.config.defaultAudio
 };