diff --git a/doc/Client-Portal Protocol.md b/doc/Client-Portal Protocol.md
index 02e7a4857..422719c71 100644
--- a/doc/Client-Portal Protocol.md	
+++ b/doc/Client-Portal Protocol.md	
@@ -202,6 +202,7 @@ This a format for client reconnects.
                 source: "mic" | "camera" | "screen-cast" | "raw-file" | "encoded-file" | undefined,
                 mid: string(mid) | undefined,
                 rid: string(rid) | undefined,
+                scalabilityMode: "L1T3" | ... | undefined,
                 optional:
                 {
                  format: [object(AudioFormat)] | [object(VideoFormat)] | undefined,
@@ -379,6 +380,7 @@ A publication can send either media or data, but a QUIC *transport* channel can
             type: "audio" | "video",
             mid: string(MID),
             source: "mic" | "screen-cast" | ... | "encoded-file",
+            scalabilityMode: "L1T3" | ... | undefined,
           }
         ]
       }
@@ -451,7 +453,7 @@ A publication can send either media or data, but a QUIC *transport* channel can
             type: "audio" | "video",
             mid: string(MID),
             from: string(TrackID) | string(StreamID),
-            parameters: object(VideoParametersSpecification) | undefined,
+            parameters: object(VideoParametersSpecification) | object(LayerSpecification) | undefined,
           }
         ]
       }
@@ -463,6 +465,12 @@ A publication can send either media or data, but a QUIC *transport* channel can
        bitrate: number(WantedBitrateKbps) | string(WantedBitrateMultiple) | undefined,
        keyFrameInterval: number(WantedKeyFrameIntervalSecond) | undefined
       }
+
+    object(LayerSpecification)::
+      { // Used to force layers for SVC stream
+        spatialLayer: number(SpatialLayerId) | undefined,
+        temporalLayer: number(TemporalLayerId) | undefined,
+      }
 **ResponseData**: The SubscriptionResult object with following definition if **ResponseStatus** is “ok”:
 
   object(SubscriptionResult)::
diff --git a/doc/servermd/RESTAPI.md b/doc/servermd/RESTAPI.md
index 9164ef4a9..416df0b4d 100755
--- a/doc/servermd/RESTAPI.md
+++ b/doc/servermd/RESTAPI.md
@@ -131,6 +131,7 @@ Data Model:<br>
       transcoding: object(Transcoding),    // the transcoding control
       notifying: object(Notifying),        // notification control
       selectActiveAudio: boolean,          // select 3 most active audio streams for the room
+      rtcSenderBandwidthEstimation: boolean,  // enable send side bandwidth estimation for webrtc subscription
       sip: object(Sip)                     // SIP configuration
     }