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diff --git a/telecomm/java/android/telecom/PhoneCapabilities.java b/telecomm/java/android/telecom/PhoneCapabilities.java
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+++ b/telecomm/java/android/telecom/PhoneCapabilities.java
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+/*
+ * Copyright 2014, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.telecom;
+
+/**
+ * Defines capabilities a phone call can support, such as conference calling and video telephony.
+ * Also defines properties of a phone call, such as whether it is using VoLTE technology.
+ */
+public final class PhoneCapabilities {
+    /** Call can currently be put on hold or unheld. */
+    public static final int HOLD               = 0x00000001;
+
+    /** Call supports the hold feature. */
+    public static final int SUPPORT_HOLD       = 0x00000002;
+
+    /**
+     * Calls within a conference can be merged. Some connection services create a conference call
+     * only after two calls have been merged.  However, a conference call can also be added the
+     * moment there are more than one call. CDMA calls are implemented in this way because the call
+     * actions are more limited when more than one call exists. This flag allows merge to be exposed
+     * as a capability on the conference call instead of individual calls.
+     */
+    public static final int MERGE_CONFERENCE   = 0x00000004;
+
+    /** Calls withing a conference can be swapped between foreground and background. */
+    public static final int SWAP_CONFERENCE    = 0x00000008;
+
+    /** Call currently supports adding another call to this one. */
+    public static final int ADD_CALL           = 0x00000010;
+
+    /** Call supports responding via text option. */
+    public static final int RESPOND_VIA_TEXT   = 0x00000020;
+
+    /** Call can be muted. */
+    public static final int MUTE               = 0x00000040;
+
+    /**
+     * Call supports conference call management. This capability only applies to conference calls
+     * which can have other calls as children.
+     */
+    public static final int MANAGE_CONFERENCE = 0x00000080;
+
+    /**
+     * Local device supports video telephony.
+     * @hide
+     */
+    public static final int SUPPORTS_VT_LOCAL  = 0x00000100;
+
+    /**
+     * Remote device supports video telephony.
+     * @hide
+     */
+    public static final int SUPPORTS_VT_REMOTE = 0x00000200;
+
+    /**
+     * Call is using voice over LTE.
+     * @hide
+     */
+    public static final int VoLTE = 0x00000400;
+
+    /**
+     * Call is using voice over WIFI.
+     * @hide
+     */
+    public static final int VoWIFI = 0x00000800;
+
+    /**
+     * Call is able to be separated from its parent {@code Conference}, if any.
+     */
+    public static final int SEPARATE_FROM_CONFERENCE = 0x00001000;
+
+    /**
+     * Call is able to be individually disconnected when in a {@code Conference}.
+     */
+    public static final int DISCONNECT_FROM_CONFERENCE = 0x00002000;
+
+    public static final int ALL = HOLD | SUPPORT_HOLD | MERGE_CONFERENCE | SWAP_CONFERENCE
+            | ADD_CALL | RESPOND_VIA_TEXT | MUTE | MANAGE_CONFERENCE | SEPARATE_FROM_CONFERENCE
+            | DISCONNECT_FROM_CONFERENCE;
+
+    public static String toString(int capabilities) {
+        StringBuilder builder = new StringBuilder();
+        builder.append("[Capabilities:");
+        if ((capabilities & HOLD) != 0) {
+            builder.append(" HOLD");
+        }
+        if ((capabilities & SUPPORT_HOLD) != 0) {
+            builder.append(" SUPPORT_HOLD");
+        }
+        if ((capabilities & MERGE_CONFERENCE) != 0) {
+            builder.append(" MERGE_CONFERENCE");
+        }
+        if ((capabilities & SWAP_CONFERENCE) != 0) {
+            builder.append(" SWAP_CONFERENCE");
+        }
+        if ((capabilities & ADD_CALL) != 0) {
+            builder.append(" ADD_CALL");
+        }
+        if ((capabilities & RESPOND_VIA_TEXT) != 0) {
+            builder.append(" RESPOND_VIA_TEXT");
+        }
+        if ((capabilities & MUTE) != 0) {
+            builder.append(" MUTE");
+        }
+        if ((capabilities & MANAGE_CONFERENCE) != 0) {
+            builder.append(" MANAGE_CONFERENCE");
+        }
+        if ((capabilities & SUPPORTS_VT_LOCAL) != 0) {
+            builder.append(" SUPPORTS_VT_LOCAL");
+        }
+        if ((capabilities & SUPPORTS_VT_REMOTE) != 0) {
+            builder.append(" SUPPORTS_VT_REMOTE");
+        }
+        if ((capabilities & VoLTE) != 0) {
+            builder.append(" VoLTE");
+        }
+        if ((capabilities & VoWIFI) != 0) {
+            builder.append(" VoWIFI");
+        }
+        builder.append("]");
+        return builder.toString();
+    }
+
+    private PhoneCapabilities() {}
+}