diff --git a/assets/css/components/calls/callWindow.css b/assets/css/components/calls/callWindow.css
new file mode 100644
index 00000000..013edba7
--- /dev/null
+++ b/assets/css/components/calls/callWindow.css
@@ -0,0 +1,54 @@
+/**
+ * Calls window stylesheet
+ *
+ * @author Pierre HUBERT
+ */
+
+.call-window {
+	background-color: white;
+	width: 300px;
+	height: 300px;
+	position: fixed;
+	top: 100px;
+	right: 10px;
+	z-index: 100;
+	border: 1px black solid;
+}
+
+
+/**
+ * Loading message
+ */
+.loading-message-container {
+	position: absolute;
+	height: inherit;
+	width: inherit;
+	display: flex;
+	background: 1px #0009;
+	flex-direction: column;
+	justify-content: space-around;
+	text-align: center;
+	font-size: 150%;
+	color: white;
+}
+
+
+/**
+ * Toolbar
+ */
+.call-toolbar {
+	height: 20px;
+	background-color: #000000b3;
+	color: white;
+	display: flex;
+	align-items: center;
+	padding-left: 10px;
+}
+
+.call-toolbar > i:first-child {
+	margin-right: 6px;
+}
+
+.call-title {
+	flex: 1;
+}
\ No newline at end of file
diff --git a/assets/js/common/functionsSchema.js b/assets/js/common/functionsSchema.js
index a5cf4ab3..735382c8 100644
--- a/assets/js/common/functionsSchema.js
+++ b/assets/js/common/functionsSchema.js
@@ -1167,6 +1167,27 @@ var ComunicWeb = {
 			controller: {
 				//TODO : implement
 			},
+
+			/**
+			 * Call window
+			 */
+			callWindow: {
+				//TODO : implement
+			},
+
+			/**
+			 * Current calls list
+			 */
+			currentList: {
+				//TODO : implement
+			},
+
+			/**
+			 * User media getter
+			 */
+			userMedia: {
+				//TODO : implement
+			},
 		},
 
 		/**
diff --git a/assets/js/components/calls/callWindow.js b/assets/js/components/calls/callWindow.js
new file mode 100644
index 00000000..6c65dd1c
--- /dev/null
+++ b/assets/js/components/calls/callWindow.js
@@ -0,0 +1,117 @@
+/**
+ * Single call window management
+ * 
+ * @author Pierre HUBERT
+ */
+
+ComunicWeb.components.calls.callWindow = {
+
+	/**
+	 * Initialize a call
+	 * 
+	 * @param {Object} info Information about the call to initialize
+	 */
+	initCall: function(info){
+
+		/**
+		 * Initialize call object
+		 */
+		var call = {
+			info: info,
+			open: true,
+			window: {}
+		};
+
+		//We have to begin to draw conversation UI
+		var callContainer = createElem2({
+			appendTo: byId("callsTarget") ? byId("callsTarget") : byId("wrapper"), //If call target is not found, add call in page wrapper
+			type: "div",
+			class: "call-window" 
+		});
+		call.window.container = callContainer;
+
+
+		//Create loading message area
+		call.window.loadingMessageContainer = createElem2({
+			appendTo: callContainer,
+			type: "div",
+			class: "loading-message-container",
+			innerHTML: "<i class='fa fa-clock-o'></i>"
+		});
+
+		call.window.loadingMessageContainer = createElem2({
+			appendTo: call.window.loadingMessageContainer,
+			type: "div",
+			class: "message",
+			innerHTML: "Loading..."
+		});
+
+		/**
+		 * Set loading message visiblity
+		 * 
+		 * @param {Boolean} visible TRUE to make it visible / FALSE else
+		 */
+		call.setLoadingMessageVisibility = function(visible){
+			call.window.loadingMessageContainer.style.display = visible ? "flex" : "none";
+		}
+
+		/**
+		 * Update call loading message
+		 * 
+		 * @param {String} message The new message to show to the
+		 * users
+		 */
+		call.setLoadingMessage = function(message){
+			call.window.loadingMessageContainer.innerHTML = message;
+		}
+
+
+		//Add toolbar
+		call.window.toolbar = createElem2({
+			appendTo: callContainer,
+			type: "div",
+			class: "call-toolbar",
+			innerHTML: "<i class='fa fa-phone'>"
+		});
+
+		//Call title
+		call.window.title = createElem2({
+			appendTo: call.window.toolbar,
+			type: "div",
+			class: "call-title",
+			innerHTML: "Loading..."
+		});
+
+		/**
+		 * Update the title of the call
+		 */
+		call.setTitle = function(title){
+			call.window.title.innerHTML = title;
+		}
+
+		//Add close button
+		call.window.closeButton = createElem2({
+			appendTo: call.window.toolbar,
+			type: "button",
+			class: "btn btn-box-tool close-btn",
+			innerHTML: "<i class='fa fa-times'></i>"
+		});
+
+
+		//Get information about related conversation to get the name of the call
+		ComunicWeb.components.conversations.interface.getInfosOne(info.conversation_id, function(conv_info){
+
+			if(conv_info.error)
+				return notify("Could not get information about related conversation!", "danger");
+			
+			ComunicWeb.components.conversations.utils.getName(conv_info, function(name){
+				call.setTitle(name);
+			})
+
+		}, false);
+
+		//Load user media
+		call.setLoadingMessage("Waiting for your microphone and camera...");
+	}
+
+}
\ No newline at end of file
diff --git a/assets/js/components/calls/controller.js b/assets/js/components/calls/controller.js
index 89ee9fcb..a5fad5dc 100644
--- a/assets/js/components/calls/controller.js
+++ b/assets/js/components/calls/controller.js
@@ -42,6 +42,33 @@ ComunicWeb.components.calls.controller = {
 			});
 
 		});
+
+		// Each time a page is opened, wec check if we have to create calls target
+		document.addEventListener("openPage", function(){
+
+			//Signed out users can not make calls
+			if(!signed_in())
+				return;
+
+			//Need a wrapper to continue
+			if(!byId("wrapper"))
+				return;
+
+			//Check if calls target already exists
+			if(byId("callsTarget"))
+				return;
+			
+			//Call system must be available
+			if(!ComunicWeb.components.calls.controller.isAvailable())
+				return;
+				
+			//Create call target
+			createElem2({
+				appendTo: byId("wrapper"),
+				type: "div",
+				id: "callsTarget"
+			});
+		});
 	},
 
 	/**
@@ -65,6 +92,28 @@ ComunicWeb.components.calls.controller = {
 
 		//Read configuration
 		return this.getConfig().enabled;
-	}
+	},
 
+	/**
+	 * Initiate a call for a conversation
+	 * 
+	 * @param {Number} conversationID The ID of the target conversation
+	 */
+	call: function(conversationID){
+		
+		//Create / Get call information for the conversation
+		ComunicWeb.components.calls.interface.createForConversation(conversationID, function(call){
+
+			if(call.error)
+				return notify("Could not get a call for this conversation!", "danger");
+			
+			//Add the call to the list of opened calls
+			ComunicWeb.components.calls.currentList.addCallToList(call.id);
+
+			//Initialize call
+			ComunicWeb.components.calls.callWindow.initCall(call);
+
+		});
+
+	}
 }
\ No newline at end of file
diff --git a/assets/js/components/calls/currentList.js b/assets/js/components/calls/currentList.js
new file mode 100644
index 00000000..50828e32
--- /dev/null
+++ b/assets/js/components/calls/currentList.js
@@ -0,0 +1,69 @@
+/**
+ * Currents calls list management
+ * 
+ * @author Pierre HUBERT
+ */
+
+ComunicWeb.components.calls.currentList = {
+
+	/**
+	 * This variable contains the name of the session storage
+	 * variable that contains active calls
+	 */
+	_local_storage_list_calls_name: "current-calls",
+
+
+	/**
+	 * Get the list of active calls
+	 * 
+	 * @return {number[]} The list of calls
+	 */
+	getCurrentCallsList: function(){
+		var string = localStorage.getItem(this._local_storage_list_calls_name);
+
+		if(string === null || string == "")
+			return [];
+		else
+			return string.split(",");
+	},
+
+	/**
+	 * Save a new list of calls
+	 * 
+	 * @param {number[]} list The new list of calls to save
+	 */
+	saveNewCallsList: function(list){
+		localStorage.setItem(this._local_storage_list_calls_name, list.join(","));
+	},
+
+	/**
+	 * Add a call to the list of opened call
+	 * 
+	 * @param {number} id The ID of the call to add
+	 */
+	addCallToList: function(id){
+		let list = this.getCurrentCallsList();
+
+		if(!list.includes(""+id))
+			list.push(id);
+		
+		this.saveNewCallsList(list);
+	},
+
+	/**
+	 * Remove a call from the list of calls
+	 * 
+	 * @param {Number} id The ID of the call to remove
+	 */
+	removeCallFromList: function(id){
+
+		let list = this.getCurrentCallsList();
+
+		while(list.includes(""+id))
+			list.splice(list.indexOf(""+id), 1);
+		
+		this.saveNewCallsList(list);
+
+	},
+
+}
\ No newline at end of file
diff --git a/assets/js/components/calls/interface.js b/assets/js/components/calls/interface.js
index 590a0a23..08ef8ea6 100644
--- a/assets/js/components/calls/interface.js
+++ b/assets/js/components/calls/interface.js
@@ -14,6 +14,22 @@ ComunicWeb.components.calls.interface = {
 	 */
 	getConfig: function(callback){
 		ComunicWeb.common.api.makeAPIrequest("calls/config", {}, true, callback);
-	}
+	},
 
+	/**
+	 * Create a call for a conversation
+	 * 
+	 * @param {Number} convID The ID of the target conversation
+	 * @param {function} callback
+	 */
+	createForConversation : function(convID, callback){
+		ComunicWeb.common.api.makeAPIrequest(
+			"calls/createForConversation",
+			{
+				conversationID: convID
+			},
+			true,
+			callback
+		);
+	}
 }
\ No newline at end of file
diff --git a/assets/js/components/calls/userMedia.js b/assets/js/components/calls/userMedia.js
new file mode 100644
index 00000000..1bf6358a
--- /dev/null
+++ b/assets/js/components/calls/userMedia.js
@@ -0,0 +1,43 @@
+/**
+ * User media getter
+ *
+ * @author Pierre HUBERT
+ */
+
+ComunicWeb.components.calls.userMedia = {
+
+	/**
+	 * Pointer on current user media
+	 */
+	_currMedia: undefined,
+
+	/**
+	 * Get user media
+	 * 
+	 * @return {Promise} A promise to get user media
+	 */
+	get: function(){
+
+		//Check if we have already got user media
+		if(this._currMedia != undefined && this._currMedia.active)
+			return new Promise(function(resolve, error){
+				resolve(ComunicWeb.components.calls.userMedia._currMedia);
+			});
+		
+		//Use latest API
+		return navigator.mediaDevices
+
+			//Request user media
+			.getUserMedia({
+				audio: true,
+				video: true
+			})
+
+			//Save stream
+			.then(function(stream){
+				ComunicWeb.components.calls.userMedia._currMedia = stream;
+				return stream;
+			});
+	}
+
+}
\ No newline at end of file
diff --git a/assets/js/components/conversations/chatWindows.js b/assets/js/components/conversations/chatWindows.js
index f4a008fa..c4494620 100644
--- a/assets/js/components/conversations/chatWindows.js
+++ b/assets/js/components/conversations/chatWindows.js
@@ -594,6 +594,9 @@ ComunicWeb.components.conversations.chatWindows = {
 		});
 		conversation.box.callButton = button;
 
+		button.addEventListener("click", function(){
+			ComunicWeb.components.calls.controller.call(conversation.infos.ID);
+		});
 	},
 
 
diff --git a/system/config/dev.config.php b/system/config/dev.config.php
index 1f5571a4..f5e0ef3b 100644
--- a/system/config/dev.config.php
+++ b/system/config/dev.config.php
@@ -218,6 +218,9 @@ class Dev {
 			//Incognito mode component
 			"css/components/incognito/ui.css",
 
+			//Calls component
+			"css/components/calls/callWindow.css",
+
 			//Pacman (easter egg) stylesheet
 			"css/components/pacman.css",
 
@@ -440,6 +443,9 @@ class Dev {
 			//Calls compontent
 			"js/components/calls/interface.js",
 			"js/components/calls/controller.js",
+			"js/components/calls/callWindow.js",
+			"js/components/calls/currentList.js",
+			"js/components/calls/userMedia.js",
 
 			//Pacman component (easter egg)
 			"js/components/pacman.js",