diff --git a/src/app/Http/Controllers/API/V4/OpenViduController.php b/src/app/Http/Controllers/API/V4/OpenViduController.php
--- a/src/app/Http/Controllers/API/V4/OpenViduController.php
+++ b/src/app/Http/Controllers/API/V4/OpenViduController.php
@@ -197,6 +197,7 @@
 
         $user = Auth::guard()->user();
         $isOwner = $user && $user->id == $room->user_id;
+        $init = !empty(request()->input('init'));
 
         // There's no existing session
         if (!$room->hasSession()) {
@@ -206,7 +207,7 @@
             }
 
             // The room owner can create the session on request
-            if (empty(request()->input('init'))) {
+            if (!$init) {
                 return $this->errorResponse(422, \trans('meet.session-not-found'), ['code' => 324]);
             }
 
@@ -276,28 +277,41 @@
             }
         }
 
-        // Create session token for the current user/connection
-        $response = $room->getSessionToken($isOwner ? Room::ROLE_MODERATOR : Room::ROLE_PUBLISHER);
-
-        if (empty($response)) {
-            return $this->errorResponse(500, \trans('meet.session-join-error'));
-        }
+        // Initialize connection tokens
+        if ($init) {
+            // Choose the connection role
+            if ($isOwner) {
+                $role = Room::ROLE_MODERATOR;
+            } elseif (request()->input('role') === Room::ROLE_PUBLISHER) {
+                $role = Room::ROLE_PUBLISHER;
+            } else {
+                $role = Room::ROLE_SUBSCRIBER;
+            }
 
-        // Create session token for screen sharing connection
-        if (!empty(request()->input('screenShare'))) {
-            $add_token = $room->getSessionToken(Room::ROLE_PUBLISHER);
+            // Create session token for the current user/connection
+            $response = $room->getSessionToken($role);
 
-            $response['shareToken'] = $add_token['token'];
-        }
+            if (empty($response)) {
+                return $this->errorResponse(500, \trans('meet.session-join-error'));
+            }
 
-        // Tell the UI who's the room owner
-        $response['owner'] = $isOwner;
+            // Create session token for screen sharing connection
+            if ($role != Room::ROLE_SUBSCRIBER && !empty(request()->input('screenShare'))) {
+                $add_token = $room->getSessionToken(Room::ROLE_PUBLISHER);
 
-        // Append the room configuration
+                $response['shareToken'] = $add_token['token'];
+            }
 
-        $response['config'] = $config;
+            $response_code = 200;
+            $response['role'] = $role;
+            $response['owner'] = $isOwner;
+            $response['config'] = $config;
+        } else {
+            $response_code = 422;
+            $response['code'] = 322;
+        }
 
-        return response()->json($response);
+        return response()->json($response, $response_code);
     }
 
     /**
diff --git a/src/resources/js/meet/app.js b/src/resources/js/meet/app.js
--- a/src/resources/js/meet/app.js
+++ b/src/resources/js/meet/app.js
@@ -70,7 +70,7 @@
     /**
      * Join the room session
      *
-     * @param data Session metadata and event handlers (session, token, shareToken, nickname,
+     * @param data Session metadata and event handlers (session, token, shareToken, nickname, role,
      *             chatElement, menuElement, onDestroy, onJoinRequest)
      */
     function joinRoom(data) {
@@ -191,10 +191,13 @@
                 })
 
                 publisher.createVideoElement(wrapper, 'PREPEND')
+
                 sessionData.wrapper = wrapper
 
                 // Publish the stream
-                session.publish(publisher)
+                if (sessionData.role != 'SUBSCRIBER') {
+                    session.publish(publisher)
+                }
             })
             .catch(error => {
                 console.error('There was an error connecting to the session: ', error.message);
@@ -488,7 +491,7 @@
         message = message.replace(/\r?\n/, '<br>')
 
         // Display the message
-        let isSelf = data.id == publisher.stream.connection.connectionId
+        let isSelf = data.id == session.connectionId
         let chat = $(sessionData.chatElement).find('.chat')
         let box = chat.find('.message').last()
 
diff --git a/src/resources/vue/Meet/Room.vue b/src/resources/vue/Meet/Room.vue
--- a/src/resources/vue/Meet/Room.vue
+++ b/src/resources/vue/Meet/Room.vue
@@ -2,13 +2,13 @@
     <div id="meet-component">
         <div id="meet-session-toolbar" class="hidden">
             <div id="meet-session-menu">
-                <button class="btn btn-link link-audio" @click="switchSound" title="Mute audio">
+                <button class="btn btn-link link-audio" @click="switchSound" :disabled="!isPublisher()" title="Mute audio">
                     <svg-icon icon="microphone"></svg-icon>
                 </button>
-                <button class="btn btn-link link-video" @click="switchVideo" title="Mute video">
+                <button class="btn btn-link link-video" @click="switchVideo" :disabled="!isPublisher()" title="Mute video">
                     <svg-icon icon="video"></svg-icon>
                 </button>
-                <button class="btn btn-link link-screen text-danger" @click="switchScreen" :disabled="!canShareScreen" title="Share screen">
+                <button class="btn btn-link link-screen text-danger" @click="switchScreen" :disabled="!canShareScreen || !isPublisher()" title="Share screen">
                     <svg-icon icon="desktop"></svg-icon>
                 </button>
                 <button class="btn btn-link link-chat text-danger" @click="switchChat" title="Chat">
@@ -204,7 +204,8 @@
                     screenShare: this.canShareScreen ? 1 : 0,
                     init: init ? 1 : 0,
                     picture: init ? this.makePicture() : '',
-                    requestId: this.requestId()
+                    requestId: this.requestId(),
+                    role: this.camera || this.microphone ? 'PUBLISHER' : 'SUBSCRIBER'
                 }
 
                 $('#setup-password,#setup-nickname').removeClass('is-invalid')
@@ -265,8 +266,11 @@
                     $('#meet-session-menu').find('.link-fullscreen.closed').removeClass('hidden')
                 }
             },
+            isPublisher() {
+                return this.session && this.session.role && this.session.role != 'SUBSCRIBER'
+            },
             isRoomReady() {
-                return ['ready', 324, 325, 326, 327].includes(this.roomState)
+                return ['ready', 322, 324, 325, 326, 327].includes(this.roomState)
             },
             // An event received by the room owner when a participant is asking for a permission to join the room
             joinRequest(data) {
diff --git a/src/resources/vue/Widgets/StatusMessage.vue b/src/resources/vue/Widgets/StatusMessage.vue
--- a/src/resources/vue/Widgets/StatusMessage.vue
+++ b/src/resources/vue/Widgets/StatusMessage.vue
@@ -1,5 +1,5 @@
 <template>
-    <div v-if="status != 'ready'" :class="statusClass()">
+    <div v-if="statusLabel()" :class="statusClass()">
         <div v-if="status == 'init'" class="app-loader small">
             <div class="spinner-border" role="status"></div>
         </div>
diff --git a/src/tests/Browser/Meet/RoomControlsTest.php b/src/tests/Browser/Meet/RoomControlsTest.php
--- a/src/tests/Browser/Meet/RoomControlsTest.php
+++ b/src/tests/Browser/Meet/RoomControlsTest.php
@@ -153,7 +153,7 @@
             $guest->assertToolbar([
                     'audio' => RoomPage::BUTTON_INACTIVE | RoomPage::BUTTON_DISABLED,
                     'video' => RoomPage::BUTTON_INACTIVE | RoomPage::BUTTON_DISABLED,
-                    'screen' => RoomPage::BUTTON_INACTIVE | RoomPage::BUTTON_ENABLED,
+                    'screen' => RoomPage::BUTTON_INACTIVE | RoomPage::BUTTON_DISABLED,
                     'chat' => RoomPage::BUTTON_INACTIVE | RoomPage::BUTTON_ENABLED,
                     'fullscreen' => RoomPage::BUTTON_ACTIVE | RoomPage::BUTTON_ENABLED,
                     'logout' => RoomPage::BUTTON_ACTIVE | RoomPage::BUTTON_ENABLED,
diff --git a/src/tests/Browser/Meet/RoomSetupTest.php b/src/tests/Browser/Meet/RoomSetupTest.php
--- a/src/tests/Browser/Meet/RoomSetupTest.php
+++ b/src/tests/Browser/Meet/RoomSetupTest.php
@@ -162,6 +162,7 @@
                 ->waitFor('@setup-form')
                 ->assertMissing('@login-form')
                 ->waitUntilMissing('@setup-status-message.loading')
+                ->waitFor('@setup-status-message')
                 ->assertSeeIn('@setup-status-message', "The room is closed. It will be open for others after you join.")
                 ->assertSeeIn('@setup-button', "JOIN")
                 ->type('@setup-nickname-input', 'john')
diff --git a/src/tests/Feature/Controller/OpenViduTest.php b/src/tests/Feature/Controller/OpenViduTest.php
--- a/src/tests/Feature/Controller/OpenViduTest.php
+++ b/src/tests/Feature/Controller/OpenViduTest.php
@@ -122,8 +122,31 @@
 
         $john_token = $json['token'];
 
-        // Non-owner, now the session exists
+        // Non-owner, now the session exists, no 'init' argument
         $response = $this->actingAs($jack)->post("api/v4/openvidu/rooms/{$room->name}");
+        $response->assertStatus(422);
+
+        $json = $response->json();
+
+        $this->assertSame(322, $json['code']);
+        $this->assertTrue(empty($json['token']));
+        $this->assertTrue(empty($json['shareToken']));
+
+        // Non-owner, now the session exists, with 'init', but no 'role' argument
+        $response = $this->actingAs($jack)->post("api/v4/openvidu/rooms/{$room->name}", ['init' => 1]);
+        $response->assertStatus(200);
+
+        $json = $response->json();
+
+        $this->assertSame(Room::ROLE_SUBSCRIBER, $json['role']);
+        $this->assertSame($session_id, $json['session']);
+        $this->assertTrue(strpos($json['token'], 'wss://') === 0);
+        $this->assertTrue($json['token'] != $john_token);
+        $this->assertTrue(empty($json['shareToken']));
+
+        // Non-owner, now the session exists, with 'init', and with 'role=PUBLISHER'
+        $post = ['role' => Room::ROLE_PUBLISHER, 'init' => 1];
+        $response = $this->actingAs($jack)->post("api/v4/openvidu/rooms/{$room->name}", $post);
         $response->assertStatus(200);
 
         $json = $response->json();
@@ -158,7 +181,9 @@
         $this->assertSame(325, $json['code']);
 
         // Non-owner, password protected room, valid password provided
-        $response = $this->actingAs($jack)->post("api/v4/openvidu/rooms/{$room->name}", ['password' => 'pass']);
+        // TODO: Test without init=1
+        $post = ['password' => 'pass', 'init' => 'init'];
+        $response = $this->actingAs($jack)->post("api/v4/openvidu/rooms/{$room->name}", $post);
         $response->assertStatus(200);
 
         $json = $response->json();
@@ -166,7 +191,9 @@
         $this->assertSame($session_id, $json['session']);
 
         // Make sure the room owner can access the password protected room w/o password
-        $response = $this->actingAs($john)->post("api/v4/openvidu/rooms/{$room->name}");
+        // TODO: Test without init=1
+        $post = ['init' => 'init'];
+        $response = $this->actingAs($john)->post("api/v4/openvidu/rooms/{$room->name}", $post);
         $response->assertStatus(200);
     }
 
@@ -203,7 +230,7 @@
         $this->assertTrue($json['config']['locked']);
 
         // Non-owner, locked room, invalid requestId
-        $post = ['nickname' => 'name', 'requestId' => '-----'];
+        $post = ['nickname' => 'name', 'requestId' => '-----', 'init' => 1];
         $response = $this->actingAs($jack)->post("api/v4/openvidu/rooms/{$room->name}", $post);
         $response->assertStatus(422);
 
@@ -211,7 +238,7 @@
         $this->assertSame(326, $json['code']);
 
         // Non-owner, locked room, invalid requestId
-        $post = ['nickname' => 'name', 'picture' => '-----'];
+        $post = ['nickname' => 'name', 'init' => 1];
         $response = $this->actingAs($jack)->post("api/v4/openvidu/rooms/{$room->name}", $post);
         $response->assertStatus(422);
 
@@ -294,6 +321,8 @@
         $this->assertSame('success', $json['status']);
 
         // Non-owner, locked room, join request accepted
+        $post['init'] = 1;
+        $post['role'] = Room::ROLE_PUBLISHER;
         $response = $this->actingAs($jack)->post("api/v4/openvidu/rooms/{$room->name}", $post);
         $response->assertStatus(200);
         $json = $response->json();
@@ -319,7 +348,8 @@
         $room = Room::where('name', 'john')->first();
 
         // Guest, request with screenShare token
-        $response = $this->post("api/v4/openvidu/rooms/{$room->name}", ['screenShare' => 1]);
+        $post = ['role' => Room::ROLE_PUBLISHER, 'screenShare' => 1, 'init' => 1];
+        $response = $this->post("api/v4/openvidu/rooms/{$room->name}", $post);
         $response->assertStatus(200);
 
         $json = $response->json();