diff --git a/app/src/main/java/org/communiquons/android/comunic/client/data/enums/MemberCallStatus.java b/app/src/main/java/org/communiquons/android/comunic/client/data/enums/MemberCallStatus.java
new file mode 100644
index 0000000..ddb43e3
--- /dev/null
+++ b/app/src/main/java/org/communiquons/android/comunic/client/data/enums/MemberCallStatus.java
@@ -0,0 +1,15 @@
+package org.communiquons.android.comunic.client.data.enums;
+
+/**
+ * Single member call status
+ *
+ * @author Pierre HUBERT
+ */
+public enum MemberCallStatus {
+
+    ACCEPTED,
+    REJECTED,
+    UNKNOWN,
+    HANG_UP
+
+}
diff --git a/app/src/main/java/org/communiquons/android/comunic/client/data/helpers/CallsHelper.java b/app/src/main/java/org/communiquons/android/comunic/client/data/helpers/CallsHelper.java
index 442fa44..61f92d2 100644
--- a/app/src/main/java/org/communiquons/android/comunic/client/data/helpers/CallsHelper.java
+++ b/app/src/main/java/org/communiquons/android/comunic/client/data/helpers/CallsHelper.java
@@ -3,9 +3,13 @@ package org.communiquons.android.comunic.client.data.helpers;
 import android.content.Context;
 import android.support.annotation.Nullable;
 
+import org.communiquons.android.comunic.client.data.enums.MemberCallStatus;
 import org.communiquons.android.comunic.client.data.models.APIRequest;
 import org.communiquons.android.comunic.client.data.models.APIResponse;
+import org.communiquons.android.comunic.client.data.models.CallInformation;
+import org.communiquons.android.comunic.client.data.models.CallMember;
 import org.communiquons.android.comunic.client.data.models.CallsConfiguration;
+import org.json.JSONArray;
 import org.json.JSONException;
 import org.json.JSONObject;
 
@@ -48,7 +52,7 @@ public class CallsHelper extends BaseHelper {
             APIResponse response = request.exec();
 
             //Parse response
-            mCallsConfiguration = JSONObjectToCallConfiguration(response.getJSONObject());
+            mCallsConfiguration = JSONObjectToCallsConfiguration(response.getJSONObject());
 
 
         } catch (Exception e) {
@@ -60,10 +64,13 @@ public class CallsHelper extends BaseHelper {
     /**
      * Get Calls configuration, if available
      *
+     * Note if IsCallSystemAvailable returned TRUE, it is guaranteed that this method WILL NOT
+     * return null
+     *
      * @return Calls configuration
      */
     @Nullable
-    public static CallsConfiguration getCallConfiguration(){
+    public static CallsConfiguration GetCallsConfiguration(){
         return mCallsConfiguration;
     }
 
@@ -76,10 +83,38 @@ public class CallsHelper extends BaseHelper {
      *
      * @return TRUE if call system is available / FALSE else
      */
-    public static boolean isCallSystemAvailable(){
+    public static boolean IsCallSystemAvailable(){
         return mCallsConfiguration != null && mCallsConfiguration.isEnabled();
     }
 
+    /**
+     * Create a call for a conversation, returns information about this call then
+     *
+     * Note : if a similar call already exists, it will be returned instead of
+     * creating a new call
+     *
+     * @param convID The ID of the target conversation
+     * @return Information about the created call / null in case of failure
+     */
+    @Nullable
+    public CallInformation createForConversation(int convID){
+
+        APIRequest request = new APIRequest(getContext(), "calls/createForConversation");
+        request.addInt("conversationID", convID);
+        try {
+
+            //Execute request
+            APIResponse response = request.exec();
+
+            return JSONObjectToCallInformation(response.getJSONObject());
+
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+
+    }
+
 
     /**
      * Turn a {@link JSONObject} object into a {@link CallsConfiguration} object.
@@ -88,7 +123,7 @@ public class CallsHelper extends BaseHelper {
      * @return The result of the operation
      * @throws JSONException Exception thrown in case of failure
      */
-    private static CallsConfiguration JSONObjectToCallConfiguration(JSONObject object)
+    private static CallsConfiguration JSONObjectToCallsConfiguration(JSONObject object)
             throws JSONException {
 
         CallsConfiguration config = new CallsConfiguration();
@@ -109,4 +144,60 @@ public class CallsHelper extends BaseHelper {
         return  config;
 
     }
+
+    /**
+     * Turn a {@link JSONObject} into {@link CallInformation} object
+     *
+     * @param object object to convert
+     * @return Generated CallInformation object
+     * @throws JSONException in case of failure
+     */
+    private static CallInformation JSONObjectToCallInformation(JSONObject object)
+            throws JSONException {
+
+        CallInformation call = new CallInformation();
+        call.setId(object.getInt("id"));
+        call.setConversationID(object.getInt("conversation_id"));
+        call.setLastActive(object.getInt("last_active"));
+
+        JSONArray members = object.getJSONArray("members");
+        for (int i = 0; i < members.length(); i++) {
+
+            JSONObject member_obj = members.getJSONObject(i);
+
+            call.addMember(new CallMember(
+                    member_obj.getInt("userID"),
+                    member_obj.getInt("call_id"),
+                    member_obj.getString("user_call_id"),
+                    StringToMemberCallStatus(member_obj.getString("status"))
+            ));
+        }
+
+        return call;
+
+    }
+
+    /**
+     * Turn a string into a {@link MemberCallStatus}
+     *
+     * @param s String to convert
+     * @return Generated MemberCallStatus
+     */
+    private static MemberCallStatus StringToMemberCallStatus(String s){
+        switch (s){
+
+            case "accepted":
+                return MemberCallStatus.ACCEPTED;
+
+            case "rejected":
+                return MemberCallStatus.REJECTED;
+
+            case "hang_up":
+                return MemberCallStatus.HANG_UP;
+
+            case "unknown":
+            default:
+                return MemberCallStatus.UNKNOWN;
+        }
+    }
 }
diff --git a/app/src/main/java/org/communiquons/android/comunic/client/data/models/CallInformation.java b/app/src/main/java/org/communiquons/android/comunic/client/data/models/CallInformation.java
new file mode 100644
index 0000000..95d99e5
--- /dev/null
+++ b/app/src/main/java/org/communiquons/android/comunic/client/data/models/CallInformation.java
@@ -0,0 +1,60 @@
+package org.communiquons.android.comunic.client.data.models;
+
+import android.support.annotation.NonNull;
+
+import java.util.ArrayList;
+
+/**
+ * Single call information
+ *
+ * @author Pierre HUBERT
+ */
+public class CallInformation {
+
+    //Private fields
+    private int id;
+    private int conversationID;
+    private int lastActive;
+    private ArrayList<CallMember> members = null;
+
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public int getConversationID() {
+        return conversationID;
+    }
+
+    public void setConversationID(int conversationID) {
+        this.conversationID = conversationID;
+    }
+
+    public int getLastActive() {
+        return lastActive;
+    }
+
+    public void setLastActive(int lastActive) {
+        this.lastActive = lastActive;
+    }
+
+    public ArrayList<CallMember> getMembers() {
+        return members;
+    }
+
+    public void addMember(@NonNull CallMember member){
+
+        if(members == null)
+            members = new ArrayList<>();
+
+        members.add(member);
+    }
+
+    public void setMembers(ArrayList<CallMember> members) {
+        this.members = members;
+    }
+}
diff --git a/app/src/main/java/org/communiquons/android/comunic/client/data/models/CallMember.java b/app/src/main/java/org/communiquons/android/comunic/client/data/models/CallMember.java
new file mode 100644
index 0000000..abaa1f2
--- /dev/null
+++ b/app/src/main/java/org/communiquons/android/comunic/client/data/models/CallMember.java
@@ -0,0 +1,59 @@
+package org.communiquons.android.comunic.client.data.models;
+
+import org.communiquons.android.comunic.client.data.enums.MemberCallStatus;
+
+/**
+ * Single call member information
+ *
+ * @author Pierre HUBERT
+ */
+public class CallMember {
+
+    //Private fields
+    private int userID;
+    private int callID;
+    private String userCallID;
+    private MemberCallStatus status;
+
+    public CallMember() {
+    }
+
+    public CallMember(int userID, int callID, String userCallID, MemberCallStatus status) {
+        this.userID = userID;
+        this.callID = callID;
+        this.userCallID = userCallID;
+        this.status = status;
+    }
+
+    public int getUserID() {
+        return userID;
+    }
+
+    public void setUserID(int userID) {
+        this.userID = userID;
+    }
+
+    public int getCallID() {
+        return callID;
+    }
+
+    public void setCallID(int callID) {
+        this.callID = callID;
+    }
+
+    public String getUserCallID() {
+        return userCallID;
+    }
+
+    public void setUserCallID(String userCallID) {
+        this.userCallID = userCallID;
+    }
+
+    public MemberCallStatus getStatus() {
+        return status;
+    }
+
+    public void setStatus(MemberCallStatus status) {
+        this.status = status;
+    }
+}
diff --git a/app/src/main/java/org/communiquons/android/comunic/client/ui/activities/MainActivity.java b/app/src/main/java/org/communiquons/android/comunic/client/ui/activities/MainActivity.java
index 1ad15f4..e16cf20 100644
--- a/app/src/main/java/org/communiquons/android/comunic/client/ui/activities/MainActivity.java
+++ b/app/src/main/java/org/communiquons/android/comunic/client/ui/activities/MainActivity.java
@@ -2,6 +2,7 @@ package org.communiquons.android.comunic.client.ui.activities;
 
 import android.app.Activity;
 import android.app.AlertDialog;
+import android.app.Dialog;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.DialogInterface;
@@ -31,11 +32,13 @@ import org.communiquons.android.comunic.client.data.helpers.AccountHelper;
 import org.communiquons.android.comunic.client.data.helpers.ConversationsListHelper;
 import org.communiquons.android.comunic.client.data.helpers.DatabaseHelper;
 import org.communiquons.android.comunic.client.data.helpers.DebugHelper;
+import org.communiquons.android.comunic.client.data.models.CallInformation;
 import org.communiquons.android.comunic.client.data.models.NotificationsCount;
 import org.communiquons.android.comunic.client.data.models.VirtualDirectory;
 import org.communiquons.android.comunic.client.data.runnables.FriendRefreshLoopRunnable;
 import org.communiquons.android.comunic.client.data.services.NotificationsService;
 import org.communiquons.android.comunic.client.data.utils.PreferencesUtils;
+import org.communiquons.android.comunic.client.ui.asynctasks.CreateCallForConversationTask;
 import org.communiquons.android.comunic.client.ui.asynctasks.FindVirtualDirectoryTask;
 import org.communiquons.android.comunic.client.ui.asynctasks.GetCallConfigurationTask;
 import org.communiquons.android.comunic.client.ui.asynctasks.SafeAsyncTask;
@@ -51,6 +54,7 @@ import org.communiquons.android.comunic.client.ui.fragments.groups.GroupPageMain
 import org.communiquons.android.comunic.client.ui.fragments.groups.UserGroupsFragment;
 import org.communiquons.android.comunic.client.ui.fragments.userpage.UserAccessDeniedFragment;
 import org.communiquons.android.comunic.client.ui.fragments.userpage.UserPageFragment;
+import org.communiquons.android.comunic.client.ui.listeners.OnOpenCallListener;
 import org.communiquons.android.comunic.client.ui.listeners.OnOpenPageListener;
 import org.communiquons.android.comunic.client.ui.listeners.onPostOpenListener;
 import org.communiquons.android.comunic.client.ui.listeners.openConversationListener;
@@ -71,7 +75,7 @@ import static org.communiquons.android.comunic.client.ui.Constants.IntentRequest
  */
 public class MainActivity extends BaseActivity implements
         openConversationListener, updateConversationListener, OnOpenPageListener,
-        onPostOpenListener, NavigationBar.OnNavigationItemSelectedListener {
+        onPostOpenListener, NavigationBar.OnNavigationItemSelectedListener, OnOpenCallListener {
 
     /**
      * Debug tag
@@ -840,4 +844,37 @@ public class MainActivity extends BaseActivity implements
         transaction.replace(R.id.main_fragment, fragment);
         transaction.commit();
     }
+
+    @Override
+    public void createCallForConversation(int convID) {
+        final Dialog dialog = UiUtils.create_loading_dialog(this);
+
+        //Create the call for the conversation
+        CreateCallForConversationTask task = new CreateCallForConversationTask(this);
+        task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, convID);
+        getTasksManager().addTask(task, true);
+        task.setOnPostExecuteListener(new SafeAsyncTask.OnPostExecuteListener<CallInformation>() {
+            @Override
+            public void OnPostExecute(@Nullable CallInformation callInformation) {
+
+                dialog.dismiss();
+
+                //Check for errors
+                if(callInformation == null)
+                    Toast.makeText(
+                            MainActivity.this,
+                            R.string.err_create_call_for_conversation,
+                            Toast.LENGTH_SHORT).show();
+
+                else
+                    //Open call
+                    openCall(callInformation.getId());
+            }
+        });
+    }
+
+    @Override
+    public void openCall(int callID) {
+        Log.e(TAG, "Open call " + callID);
+    }
 }
diff --git a/app/src/main/java/org/communiquons/android/comunic/client/ui/asynctasks/CreateCallForConversationTask.java b/app/src/main/java/org/communiquons/android/comunic/client/ui/asynctasks/CreateCallForConversationTask.java
new file mode 100644
index 0000000..8f8e524
--- /dev/null
+++ b/app/src/main/java/org/communiquons/android/comunic/client/ui/asynctasks/CreateCallForConversationTask.java
@@ -0,0 +1,23 @@
+package org.communiquons.android.comunic.client.ui.asynctasks;
+
+import android.content.Context;
+
+import org.communiquons.android.comunic.client.data.helpers.CallsHelper;
+import org.communiquons.android.comunic.client.data.models.CallInformation;
+
+/**
+ * Task used to create new calls from conversations
+ *
+ * @author Pierre HUBERT
+ */
+public class CreateCallForConversationTask extends SafeAsyncTask<Integer, Void, CallInformation> {
+
+    public CreateCallForConversationTask(Context context) {
+        super(context);
+    }
+
+    @Override
+    protected CallInformation doInBackground(Integer... integers) {
+        return new CallsHelper(getContext()).createForConversation(integers[0]);
+    }
+}
diff --git a/app/src/main/java/org/communiquons/android/comunic/client/ui/fragments/ConversationFragment.java b/app/src/main/java/org/communiquons/android/comunic/client/ui/fragments/ConversationFragment.java
index 8a74b3a..5a16887 100644
--- a/app/src/main/java/org/communiquons/android/comunic/client/ui/fragments/ConversationFragment.java
+++ b/app/src/main/java/org/communiquons/android/comunic/client/ui/fragments/ConversationFragment.java
@@ -26,6 +26,7 @@ import android.widget.Toast;
 
 import org.communiquons.android.comunic.client.R;
 import org.communiquons.android.comunic.client.data.arrays.ConversationMessagesList;
+import org.communiquons.android.comunic.client.data.helpers.CallsHelper;
 import org.communiquons.android.comunic.client.data.helpers.ConversationMessagesHelper;
 import org.communiquons.android.comunic.client.data.helpers.ConversationsListHelper;
 import org.communiquons.android.comunic.client.data.helpers.DatabaseHelper;
@@ -43,6 +44,7 @@ import org.communiquons.android.comunic.client.ui.asynctasks.SafeAsyncTask;
 import org.communiquons.android.comunic.client.ui.asynctasks.SendConversationMessageTask;
 import org.communiquons.android.comunic.client.ui.asynctasks.UpdateConversationMessageContentTask;
 import org.communiquons.android.comunic.client.ui.listeners.OnConversationMessageActionsListener;
+import org.communiquons.android.comunic.client.ui.listeners.OnOpenCallListener;
 import org.communiquons.android.comunic.client.ui.listeners.OnScrollChangeDetectListener;
 import org.communiquons.android.comunic.client.ui.utils.BitmapUtils;
 import org.communiquons.android.comunic.client.ui.utils.UiUtils;
@@ -51,6 +53,7 @@ import org.communiquons.android.comunic.client.ui.views.ScrollRecyclerView;
 
 import java.io.FileNotFoundException;
 import java.util.ArrayList;
+import java.util.Objects;
 
 import static android.app.Activity.RESULT_OK;
 import static org.communiquons.android.comunic.client.ui.Constants.IntentRequestCode.CONVERSATION_MESSAGE_PICK_PHOTO;
@@ -174,6 +177,11 @@ public class ConversationFragment extends Fragment
      */
     private Bitmap new_message_bitmap = null;
 
+    /**
+     * Contains whether a call button is visible on the conversation or not
+     */
+    private boolean mHasCallButton = false;
+
     /**
      * Get user helper
      */
@@ -392,6 +400,7 @@ public class ConversationFragment extends Fragment
 
     }
 
+
     @Override
     public void onDestroy() {
         super.onDestroy();
@@ -516,6 +525,23 @@ public class ConversationFragment extends Fragment
         //Update the name of the conversation
         setTitle(info.getDisplayName());
 
+
+        //Add call button (if possible)
+        if(CallsHelper.IsCallSystemAvailable() && info.getMembers().size() > 1 && info.getMembers().size() <=
+                Objects.requireNonNull(CallsHelper.GetCallsConfiguration()).getMaximumNumberMembers() &&
+                !mHasCallButton) {
+
+            mHasCallButton = true;
+
+            mAppBar.addButton(R.drawable.ic_call, new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    ((OnOpenCallListener)Objects.requireNonNull(getActivity()))
+                            .createCallForConversation(conversation_id);
+                }
+            });
+        }
+
     }
 
     /**
diff --git a/app/src/main/java/org/communiquons/android/comunic/client/ui/listeners/OnOpenCallListener.java b/app/src/main/java/org/communiquons/android/comunic/client/ui/listeners/OnOpenCallListener.java
new file mode 100644
index 0000000..33783e7
--- /dev/null
+++ b/app/src/main/java/org/communiquons/android/comunic/client/ui/listeners/OnOpenCallListener.java
@@ -0,0 +1,23 @@
+package org.communiquons.android.comunic.client.ui.listeners;
+
+/**
+ * Open call listener
+ *
+ * @author Pierre HUBERT
+ */
+public interface OnOpenCallListener {
+
+    /**
+     * Create and open a call for a conversation
+     *
+     * @param convID The ID of the target conversation
+     */
+    void createCallForConversation(int convID);
+
+    /**
+     * Open a specifed call
+     *
+     * @param callID The ID of the target call
+     */
+    void openCall(int callID);
+}
diff --git a/app/src/main/res/drawable/ic_call.xml b/app/src/main/res/drawable/ic_call.xml
new file mode 100644
index 0000000..f848904
--- /dev/null
+++ b/app/src/main/res/drawable/ic_call.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="@color/default_drawable_color"
+        android:pathData="M6.62,10.79c1.44,2.83 3.76,5.14 6.59,6.59l2.2,-2.2c0.27,-0.27 0.67,-0.36 1.02,-0.24 1.12,0.37 2.33,0.57 3.57,0.57 0.55,0 1,0.45 1,1V20c0,0.55 -0.45,1 -1,1 -9.39,0 -17,-7.61 -17,-17 0,-0.55 0.45,-1 1,-1h3.5c0.55,0 1,0.45 1,1 0,1.25 0.2,2.45 0.57,3.57 0.11,0.35 0.03,0.74 -0.25,1.02l-2.2,2.2z"/>
+</vector>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 8afbd98..b57b1b5 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -319,4 +319,5 @@
     <string name="notice_group_access_denied">Accès au groupe refusé.</string>
     <string name="err_get_group_info">Impossible de récupérer les informations sur le groupe !</string>
     <string name="notice_closed_registration">Accès sur invitation</string>
+    <string name="err_create_call_for_conversation">Une erreur a survenu lors de la création d\'un appel pour la conversation !</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index cab995c..4ed99f9 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -318,4 +318,5 @@
     <string name="activity_search_title">Search</string>
     <string name="input_search_hint">Search a user, a group…</string>
     <string name="err_get_search_results">Could not get results of your search!</string>
+    <string name="err_create_call_for_conversation">Could not create a call for the conversation!</string>
 </resources>