diff --git a/src/main/js/webrtc_adaptor.js b/src/main/js/webrtc_adaptor.js
index 17ecaa93..f14a94b0 100644
--- a/src/main/js/webrtc_adaptor.js
+++ b/src/main/js/webrtc_adaptor.js
@@ -550,8 +550,11 @@ export class WebRTCAdaptor {
 	 * @param {string=} mode :    legacy for older implementation (default value)
 	 *            mcu for merging streams
 	 *            amcu: audio only conferences with mixed audio
+	 * @param {string=} streamName : name of the stream
+	 * @param {string=} role : role for the stream. It is used for selective forwarding of subtracks in conference mode.
+	 * @param {string=} metadata : a free text information for the stream to AMS.
 	 */
-	joinRoom(roomName, streamId, mode) {
+	joinRoom(roomName, streamId, mode, streamName, role, metadata) {
 		this.roomName = roomName;
 
 		let jsCmd = {
@@ -559,6 +562,9 @@ export class WebRTCAdaptor {
 			room: roomName,
 			streamId: streamId,
 			mode: mode,
+			streamName: streamName,
+			role: role,
+			metadata: metadata,
 		}
 		this.webSocketAdaptor.send(JSON.stringify(jsCmd));
 	}
@@ -758,8 +764,9 @@ export class WebRTCAdaptor {
 	 * Called to leave from a conference room. AMS responds with leavedTheRoom message.
 	 * Parameters:
 	 * @param {string} roomName : unique id for the conference room
+	 * @param {string=} streamId : unique id for the stream that is streamed by this @WebRTCAdaptor
 	 */
-	leaveFromRoom(roomName) {
+	leaveFromRoom(roomName, streamId) {
 		for (var key in this.remotePeerConnection) {
 			this.closePeerConnection(key);
 		}
@@ -767,6 +774,7 @@ export class WebRTCAdaptor {
 		var jsCmd = {
 			command: "leaveFromRoom",
 			room: roomName,
+			streamId: streamId,
 		};
 		Logger.debug("leave request is sent for " + roomName);