diff --git a/InCallUI/src/com/android/incallui/InCallPresenter.java b/InCallUI/src/com/android/incallui/InCallPresenter.java
index 4bb86d0..d4dbda8 100644
--- a/InCallUI/src/com/android/incallui/InCallPresenter.java
+++ b/InCallUI/src/com/android/incallui/InCallPresenter.java
@@ -54,6 +54,7 @@
 import com.android.dialer.filterednumber.FilteredNumbersUtil;
 import com.android.dialer.logging.InteractionEvent;
 import com.android.dialer.logging.Logger;
+import com.android.dialer.util.TelecomUtil;
 import com.android.incallui.compat.telecom.DetailsCompat;
 import com.android.incallui.util.TelecomCallUtil;
 import com.android.incalluibind.ObjectFactory;
@@ -237,7 +238,7 @@
             if (id != null) {
                 // Silence the ringer now to prevent ringing and vibration before the call is
                 // terminated when Telecom attempts to add it.
-                getTelecomManager().silenceRinger();
+                TelecomUtil.silenceRinger(mContext);
             }
         }
     };
diff --git a/InCallUI/src/com/android/incallui/VideoCallPresenter.java b/InCallUI/src/com/android/incallui/VideoCallPresenter.java
index 9f1f8f8..ebdf820 100644
--- a/InCallUI/src/com/android/incallui/VideoCallPresenter.java
+++ b/InCallUI/src/com/android/incallui/VideoCallPresenter.java
@@ -39,6 +39,7 @@
 import com.android.incallui.InCallPresenter.IncomingCallListener;
 import com.android.incallui.InCallVideoCallCallbackNotifier.SurfaceChangeListener;
 import com.android.incallui.InCallVideoCallCallbackNotifier.VideoEventListener;
+import com.android.incallui.compat.telecom.VideoProfileCompat;
 
 import java.util.Objects;
 
@@ -487,8 +488,8 @@
         Log.d(this, "checkForVideoStateChange: isVideoCall= " + isVideoCall
                 + " hasVideoStateChanged=" + hasVideoStateChanged + " isVideoMode="
                 + isVideoMode() + " previousVideoState: " +
-                VideoProfile.videoStateToString(mCurrentVideoState) + " newVideoState: "
-                + VideoProfile.videoStateToString(call.getVideoState()));
+                VideoProfileCompat.videoStateToString(mCurrentVideoState) + " newVideoState: "
+                + VideoProfileCompat.videoStateToString(call.getVideoState()));
 
         if (!hasVideoStateChanged) {
             return;
@@ -658,12 +659,12 @@
     }
 
     private static boolean isCameraRequired(int videoState) {
-        return VideoProfile.isBidirectional(videoState) ||
-                VideoProfile.isTransmissionEnabled(videoState);
+        return VideoProfileCompat.isBidirectional(videoState) ||
+                VideoProfileCompat.isTransmissionEnabled(videoState);
     }
 
     private boolean isCameraRequired() {
-        return mPrimaryCall != null ? isCameraRequired(mPrimaryCall.getVideoState()) : false;
+        return mPrimaryCall != null && isCameraRequired(mPrimaryCall.getVideoState());
     }
 
     /**
@@ -760,7 +761,7 @@
         if (showIncomingVideo || showOutgoingVideo) {
             ui.showVideoViews(showOutgoingVideo, showIncomingVideo);
 
-            if (VideoProfile.isReceptionEnabled(videoState)) {
+            if (VideoProfileCompat.isReceptionEnabled(videoState)) {
                 loadProfilePhotoAsync();
             }
         } else {
@@ -768,7 +769,7 @@
         }
 
         InCallPresenter.getInstance().enableScreenTimeout(
-                VideoProfile.isAudioOnly(videoState));
+                VideoProfileCompat.isAudioOnly(videoState));
     }
 
     /**
@@ -785,10 +786,10 @@
             return false;
         }
 
-        boolean isPaused = VideoProfile.isPaused(videoState);
+        boolean isPaused = VideoProfileCompat.isPaused(videoState);
         boolean isCallActive = callState == Call.State.ACTIVE;
 
-        return !isPaused && isCallActive && VideoProfile.isReceptionEnabled(videoState);
+        return !isPaused && isCallActive && VideoProfileCompat.isReceptionEnabled(videoState);
     }
 
     /**
@@ -804,7 +805,7 @@
             return false;
         }
 
-        return VideoProfile.isTransmissionEnabled(videoState);
+        return VideoProfileCompat.isTransmissionEnabled(videoState);
     }
 
     /**
@@ -1231,8 +1232,8 @@
     }
 
     private static int toCameraDirection(int videoState) {
-        return VideoProfile.isTransmissionEnabled(videoState) &&
-                !VideoProfile.isBidirectional(videoState)
+        return VideoProfileCompat.isTransmissionEnabled(videoState) &&
+                !VideoProfileCompat.isBidirectional(videoState)
                 ? Call.VideoSettings.CAMERA_DIRECTION_BACK_FACING
                 : Call.VideoSettings.CAMERA_DIRECTION_FRONT_FACING;
     }
diff --git a/InCallUI/src/com/android/incallui/VideoUtils.java b/InCallUI/src/com/android/incallui/VideoUtils.java
index 8641d60..7e0926b 100644
--- a/InCallUI/src/com/android/incallui/VideoUtils.java
+++ b/InCallUI/src/com/android/incallui/VideoUtils.java
@@ -19,6 +19,7 @@
 import android.telecom.VideoProfile;
 
 import com.android.contacts.common.compat.CompatUtils;
+import com.android.incallui.compat.telecom.VideoProfileCompat;
 
 import com.google.common.base.Preconditions;
 
@@ -33,8 +34,8 @@
             return false;
         }
 
-        return VideoProfile.isTransmissionEnabled(videoState)
-                || VideoProfile.isReceptionEnabled(videoState);
+        return VideoProfileCompat.isTransmissionEnabled(videoState)
+                || VideoProfileCompat.isReceptionEnabled(videoState);
     }
 
     public static boolean isBidirectionalVideoCall(Call call) {
@@ -42,7 +43,7 @@
             return false;
         }
 
-        return VideoProfile.isBidirectional(call.getVideoState());
+        return VideoProfileCompat.isBidirectional(call.getVideoState());
     }
 
     public static boolean isIncomingVideoCall(Call call) {
@@ -71,7 +72,7 @@
             return true;
         }
 
-        return call != null && VideoProfile.isAudioOnly(call.getVideoState());
+        return call != null && VideoProfileCompat.isAudioOnly(call.getVideoState());
     }
 
     // TODO (ims-vt) Check if special handling is needed for CONF calls.
@@ -81,7 +82,7 @@
 
     public static VideoProfile makeVideoPauseProfile(Call call) {
         Preconditions.checkNotNull(call);
-        Preconditions.checkState(!VideoProfile.isAudioOnly(call.getVideoState()));
+        Preconditions.checkState(!VideoProfileCompat.isAudioOnly(call.getVideoState()));
         return new VideoProfile(getPausedVideoState(call.getVideoState()));
     }
 
diff --git a/InCallUI/src/com/android/incallui/compat/telecom/VideoProfileCompat.java b/InCallUI/src/com/android/incallui/compat/telecom/VideoProfileCompat.java
index 54d8eed..6e81bd7 100644
--- a/InCallUI/src/com/android/incallui/compat/telecom/VideoProfileCompat.java
+++ b/InCallUI/src/com/android/incallui/compat/telecom/VideoProfileCompat.java
@@ -124,4 +124,17 @@
     private static boolean hasState(int videoState, int state) {
         return (videoState & state) == state;
     }
+
+    /**
+     * Indicates whether the video state is bi-directional.
+     *
+     * @param videoState The video state.
+     * @return {@code True} if the video is bi-directional, {@code false} otherwise.
+     */
+    public static boolean isBidirectional(int videoState) {
+        if (CompatUtils.isMarshmallowCompatible()) {
+            return VideoProfile.isBidirectional(videoState);
+        }
+        return hasState(videoState, VideoProfile.STATE_BIDIRECTIONAL);
+    }
 }