diff --git a/ui-ngx/src/app/core/ws/notification-websocket.service.ts b/ui-ngx/src/app/core/ws/notification-websocket.service.ts
index 8f219c029d..cb33c23635 100644
--- a/ui-ngx/src/app/core/ws/notification-websocket.service.ts
+++ b/ui-ngx/src/app/core/ws/notification-websocket.service.ts
@@ -15,117 +15,45 @@
 ///
 
 import { Inject, Injectable, NgZone } from '@angular/core';
+import {
+  TelemetryPluginCmdsWrapper,
+  TelemetrySubscriber,
+  WebsocketDataMsg
+} from '@shared/models/telemetry/telemetry.models';
+import { TelemetryWebsocketService } from '@core/ws/telemetry-websocket.service';
 import { Store } from '@ngrx/store';
 import { AppState } from '@core/core.state';
 import { AuthService } from '@core/auth/auth.service';
 import { WINDOW } from '@core/services/window.service';
-import {
-  isNotificationCountUpdateMsg,
-  isNotificationsUpdateMsg,
-  MarkAllAsReadCmd,
-  MarkAsReadCmd,
-  NotificationCountUpdate,
-  NotificationPluginCmdWrapper,
-  NotificationSubscriber,
-  NotificationsUpdate,
-  UnreadCountSubCmd,
-  UnreadSubCmd,
-  UnsubscribeCmd,
-  WebsocketNotificationMsg
-} from '@shared/models/websocket/notification-ws.models';
 import { WebsocketService } from '@core/ws/websocket.service';
 
-
 // @dynamic
 @Injectable({
   providedIn: 'root'
 })
-export class NotificationWebsocketService extends WebsocketService<NotificationSubscriber> {
+export class NotificationWebsocketService extends WebsocketService<TelemetrySubscriber> {
 
-  cmdWrapper: NotificationPluginCmdWrapper;
-
-  constructor(protected store: Store<AppState>,
+  constructor(private telemetryWebsocketService: TelemetryWebsocketService,
+              protected store: Store<AppState>,
               protected authService: AuthService,
               protected ngZone: NgZone,
               @Inject(WINDOW) protected window: Window) {
-    super(store, authService, ngZone, 'api/ws/plugins/notifications', new NotificationPluginCmdWrapper(), window);
-    this.errorName = 'WebSocket Notification Error';
+    super(store, authService, ngZone, 'api/ws/plugins/telemetry', new TelemetryPluginCmdsWrapper(), window);
   }
 
-  public subscribe(subscriber: NotificationSubscriber) {
-    this.isActive = true;
-    subscriber.subscriptionCommands.forEach(
-      (subscriptionCommand) => {
-        const cmdId = this.nextCmdId();
-        this.subscribersMap.set(cmdId, subscriber);
-        subscriptionCommand.cmdId = cmdId;
-        if (subscriptionCommand instanceof UnreadCountSubCmd) {
-          this.cmdWrapper.unreadCountSubCmd = subscriptionCommand;
-        } else if (subscriptionCommand instanceof UnreadSubCmd) {
-          this.cmdWrapper.unreadSubCmd = subscriptionCommand;
-        } else if (subscriptionCommand instanceof MarkAsReadCmd) {
-          this.cmdWrapper.markAsReadCmd = subscriptionCommand;
-          this.subscribersMap.delete(cmdId);
-        } else if (subscriptionCommand instanceof MarkAllAsReadCmd) {
-          this.cmdWrapper.markAllAsReadCmd = subscriptionCommand;
-          this.subscribersMap.delete(cmdId);
-        }
-      }
-    );
-    if (this.cmdWrapper.unreadCountSubCmd || this.cmdWrapper.unreadSubCmd) {
-      this.subscribersCount++;
-    }
-    this.publishCommands();
+  public subscribe(subscriber: TelemetrySubscriber) {
+    this.telemetryWebsocketService.subscribe(subscriber);
   }
 
-  public update(subscriber: NotificationSubscriber) {
-    if (!this.isReconnect) {
-      subscriber.subscriptionCommands.forEach(
-        (subscriptionCommand) => {
-          if (subscriptionCommand.cmdId && subscriptionCommand instanceof UnreadSubCmd) {
-            this.cmdWrapper.unreadSubCmd = subscriptionCommand;
-          }
-        }
-      );
-      this.publishCommands();
-    }
+  public update(subscriber: TelemetrySubscriber) {
+    this.telemetryWebsocketService.update(subscriber);
   }
 
-  public unsubscribe(subscriber: NotificationSubscriber) {
-    if (this.isActive) {
-      subscriber.subscriptionCommands.forEach(
-        (subscriptionCommand) => {
-          if (subscriptionCommand instanceof UnreadCountSubCmd
-              || subscriptionCommand instanceof UnreadSubCmd) {
-            const unreadCountUnsubscribeCmd = new UnsubscribeCmd();
-            unreadCountUnsubscribeCmd.cmdId = subscriptionCommand.cmdId;
-            this.cmdWrapper.unsubCmd = unreadCountUnsubscribeCmd;
-          }
-          const cmdId = subscriptionCommand.cmdId;
-          if (cmdId) {
-            this.subscribersMap.delete(cmdId);
-          }
-        }
-      );
-      this.reconnectSubscribers.delete(subscriber);
-      this.subscribersCount--;
-      this.publishCommands();
-    }
+  public unsubscribe(subscriber: TelemetrySubscriber) {
+    this.telemetryWebsocketService.unsubscribe(subscriber);
   }
 
-  processOnMessage(message: WebsocketNotificationMsg) {
-    let subscriber: NotificationSubscriber;
-    if (isNotificationCountUpdateMsg(message)) {
-      subscriber = this.subscribersMap.get(message.cmdId);
-      if (subscriber) {
-        subscriber.onNotificationCountUpdate(new NotificationCountUpdate(message));
-      }
-    } else if (isNotificationsUpdateMsg(message)) {
-      subscriber = this.subscribersMap.get(message.cmdId);
-      if (subscriber) {
-        subscriber.onNotificationsUpdate(new NotificationsUpdate(message));
-      }
-    }
+  processOnMessage(message: WebsocketDataMsg) {
+    this.telemetryWebsocketService.processOnMessage(message);
   }
-
 }
diff --git a/ui-ngx/src/app/core/ws/telemetry-websocket.service.ts b/ui-ngx/src/app/core/ws/telemetry-websocket.service.ts
index 56c35328fb..45d8510687 100644
--- a/ui-ngx/src/app/core/ws/telemetry-websocket.service.ts
+++ b/ui-ngx/src/app/core/ws/telemetry-websocket.service.ts
@@ -16,7 +16,8 @@
 
 import { Inject, Injectable, NgZone } from '@angular/core';
 import {
-  AlarmCountCmd, AlarmCountUnsubscribeCmd,
+  AlarmCountCmd,
+  AlarmCountUnsubscribeCmd,
   AlarmCountUpdate,
   AlarmDataCmd,
   AlarmDataUnsubscribeCmd,
@@ -28,10 +29,13 @@ import {
   EntityDataCmd,
   EntityDataUnsubscribeCmd,
   EntityDataUpdate,
-  GetHistoryCmd, isAlarmCountUpdateMsg,
+  GetHistoryCmd,
+  isAlarmCountUpdateMsg,
   isAlarmDataUpdateMsg,
   isEntityCountUpdateMsg,
   isEntityDataUpdateMsg,
+  NotificationCountUpdate,
+  NotificationsUpdate,
   SubscriptionCmd,
   SubscriptionUpdate,
   TelemetryFeature,
@@ -45,6 +49,16 @@ import { AppState } from '@core/core.state';
 import { AuthService } from '@core/auth/auth.service';
 import { WINDOW } from '@core/services/window.service';
 import { WebsocketService } from '@core/ws/websocket.service';
+import {
+  isNotificationCountUpdateMsg,
+  isNotificationsUpdateMsg,
+  MarkAllAsReadCmd,
+  MarkAsReadCmd,
+  NotificationSubscriber,
+  UnreadCountSubCmd,
+  UnreadSubCmd,
+  UnsubscribeCmd
+} from '@shared/models/websocket/notification-ws.models';
 
 // @dynamic
 @Injectable({
@@ -84,6 +98,16 @@ export class TelemetryWebsocketService extends WebsocketService<TelemetrySubscri
           this.cmdWrapper.entityCountCmds.push(subscriptionCommand);
         } else if (subscriptionCommand instanceof AlarmCountCmd) {
           this.cmdWrapper.alarmCountCmds.push(subscriptionCommand);
+        } else if (subscriptionCommand instanceof UnreadCountSubCmd) {
+          this.cmdWrapper.unreadNotificationsCountSubCmds.push(subscriptionCommand);
+        } else if (subscriptionCommand instanceof UnreadSubCmd) {
+          this.cmdWrapper.unreadNotificationsSubCmds.push(subscriptionCommand);
+        } else if (subscriptionCommand instanceof MarkAsReadCmd) {
+          this.cmdWrapper.markNotificationAsReadCmds.push(subscriptionCommand);
+          this.subscribersMap.delete(cmdId);
+        } else if (subscriptionCommand instanceof MarkAllAsReadCmd) {
+          this.cmdWrapper.markAllNotificationsAsReadCmds.push(subscriptionCommand);
+          this.subscribersMap.delete(cmdId);
         }
       }
     );
@@ -97,6 +121,8 @@ export class TelemetryWebsocketService extends WebsocketService<TelemetrySubscri
         (subscriptionCommand) => {
           if (subscriptionCommand.cmdId && subscriptionCommand instanceof EntityDataCmd) {
             this.cmdWrapper.entityDataCmds.push(subscriptionCommand);
+          } else if (subscriptionCommand.cmdId && subscriptionCommand instanceof UnreadSubCmd) {
+            this.cmdWrapper.unreadNotificationsSubCmds.push(subscriptionCommand);
           }
         }
       );
@@ -131,6 +157,10 @@ export class TelemetryWebsocketService extends WebsocketService<TelemetrySubscri
             const alarmCountUnsubscribeCmd = new AlarmCountUnsubscribeCmd();
             alarmCountUnsubscribeCmd.cmdId = subscriptionCommand.cmdId;
             this.cmdWrapper.alarmCountUnsubscribeCmds.push(alarmCountUnsubscribeCmd);
+          } else if (subscriptionCommand instanceof UnreadCountSubCmd || subscriptionCommand instanceof UnreadSubCmd) {
+            const notificationsUnsubCmds = new UnsubscribeCmd();
+            notificationsUnsubCmds.cmdId = subscriptionCommand.cmdId;
+            this.cmdWrapper.notificationsUnsubCmds.push(notificationsUnsubCmds);
           }
           const cmdId = subscriptionCommand.cmdId;
           if (cmdId) {
@@ -145,29 +175,28 @@ export class TelemetryWebsocketService extends WebsocketService<TelemetrySubscri
   }
 
   processOnMessage(message: WebsocketDataMsg) {
-    let subscriber: TelemetrySubscriber;
-    if (isEntityDataUpdateMsg(message)) {
-      subscriber = this.subscribersMap.get(message.cmdId);
-      if (subscriber) {
-        subscriber.onEntityData(new EntityDataUpdate(message));
-      }
-    } else if (isAlarmDataUpdateMsg(message)) {
-      subscriber = this.subscribersMap.get(message.cmdId);
-      if (subscriber) {
-        subscriber.onAlarmData(new AlarmDataUpdate(message));
-      }
-    } else if (isEntityCountUpdateMsg(message)) {
+    let subscriber: TelemetrySubscriber | NotificationSubscriber;
+    if ('cmdId' in message && message.cmdId) {
       subscriber = this.subscribersMap.get(message.cmdId);
-      if (subscriber) {
-        subscriber.onEntityCount(new EntityCountUpdate(message));
-      }
-    } else if (isAlarmCountUpdateMsg(message)) {
-      subscriber = this.subscribersMap.get(message.cmdId);
-      if (subscriber) {
-        subscriber.onAlarmCount(new AlarmCountUpdate(message));
+      if (subscriber instanceof NotificationSubscriber) {
+        if (isNotificationCountUpdateMsg(message) && subscriber) {
+          subscriber.onNotificationCountUpdate(new NotificationCountUpdate(message));
+        } else if (isNotificationsUpdateMsg(message) && subscriber) {
+          subscriber.onNotificationsUpdate(new NotificationsUpdate(message));
+        }
+      } else if (subscriber instanceof TelemetrySubscriber) {
+        if (isEntityDataUpdateMsg(message) && subscriber) {
+          subscriber.onEntityData(new EntityDataUpdate(message));
+        } else if (isAlarmDataUpdateMsg(message) && subscriber) {
+          subscriber.onAlarmData(new AlarmDataUpdate(message));
+        } else if (isEntityCountUpdateMsg(message) && subscriber) {
+          subscriber.onEntityCount(new EntityCountUpdate(message));
+        } else if (isAlarmCountUpdateMsg(message) && subscriber) {
+          subscriber.onAlarmCount(new AlarmCountUpdate(message));
+        }
       }
-    } else if (message.subscriptionId) {
-      subscriber = this.subscribersMap.get(message.subscriptionId);
+    } else if ('subscriptionId' in message && message.subscriptionId) {
+      subscriber = this.subscribersMap.get(message.subscriptionId) as TelemetrySubscriber;
       if (subscriber) {
         subscriber.onData(new SubscriptionUpdate(message));
       }
diff --git a/ui-ngx/src/app/core/ws/websocket.service.ts b/ui-ngx/src/app/core/ws/websocket.service.ts
index 2d2162267d..a690ba08b6 100644
--- a/ui-ngx/src/app/core/ws/websocket.service.ts
+++ b/ui-ngx/src/app/core/ws/websocket.service.ts
@@ -21,10 +21,10 @@ import { AuthService } from '@core/auth/auth.service';
 import { NgZone } from '@angular/core';
 import { selectIsAuthenticated } from '@core/auth/auth.selectors';
 import { webSocket, WebSocketSubject } from 'rxjs/webSocket';
-import { WebsocketNotificationMsg } from '@shared/models/websocket/notification-ws.models';
-import { CmdUpdateMsg } from '@shared/models/telemetry/telemetry.models';
+import { CmdUpdateMsg, TelemetrySubscriber, WebsocketDataMsg } from '@shared/models/telemetry/telemetry.models';
 import { ActionNotificationShow } from '@core/notification/notification.actions';
 import Timeout = NodeJS.Timeout;
+import { NotificationSubscriber } from '@shared/models/websocket/notification-ws.models';
 
 const RECONNECT_INTERVAL = 2000;
 const WS_IDLE_TIMEOUT = 90000;
@@ -42,11 +42,11 @@ export abstract class WebsocketService<T extends WsSubscriber> implements WsServ
 
   lastCmdId = 0;
   subscribersCount = 0;
-  subscribersMap = new Map<number, T>();
+  subscribersMap = new Map<number, TelemetrySubscriber | NotificationSubscriber>();
 
-  reconnectSubscribers = new Set<T>();
+  reconnectSubscribers = new Set<WsSubscriber>();
 
-  notificationUri: string;
+  wsUri: string;
 
   dataStream: WebSocketSubject<CmdWrapper | CmdUpdateMsg>;
 
@@ -69,23 +69,23 @@ export abstract class WebsocketService<T extends WsSubscriber> implements WsServ
       if (!port) {
         port = '443';
       }
-      this.notificationUri = 'wss:';
+      this.wsUri = 'wss:';
     } else {
       if (!port) {
         port = '80';
       }
-      this.notificationUri = 'ws:';
+      this.wsUri = 'ws:';
     }
-    this.notificationUri += `//${this.window.location.hostname}:${port}/${apiEndpoint}`;
+    this.wsUri += `//${this.window.location.hostname}:${port}/${apiEndpoint}`;
   }
 
-  abstract subscribe(subscriber: T);
+  abstract subscribe(subscriber: WsSubscriber);
 
   abstract update(subscriber: T);
 
   abstract unsubscribe(subscriber: T);
 
-  abstract processOnMessage(message: any);
+  abstract processOnMessage(message: WebsocketDataMsg);
 
   protected nextCmdId(): number {
     this.lastCmdId++;
@@ -158,8 +158,8 @@ export abstract class WebsocketService<T extends WsSubscriber> implements WsServ
   }
 
   private openSocket(token: string) {
-    const uri = `${this.notificationUri}?token=${token}`;
-    this.dataStream = webSocket(
+    const uri = `${this.wsUri}?token=${token}`;
+    this.dataStream = webSocket<CmdUpdateMsg>(
       {
         url: uri,
         openObserver: {
@@ -176,9 +176,9 @@ export abstract class WebsocketService<T extends WsSubscriber> implements WsServ
     );
 
     this.dataStream.subscribe({
-      next: (message) => {
+      next: (message: CmdUpdateMsg) => {
         this.ngZone.runOutsideAngular(() => {
-          this.onMessage(message as WebsocketNotificationMsg);
+          this.onMessage(message);
         });
       },
       error: (error) => {
@@ -208,11 +208,11 @@ export abstract class WebsocketService<T extends WsSubscriber> implements WsServ
     }
   }
 
-  private onMessage(message: WebsocketNotificationMsg) {
+  private onMessage(message: CmdUpdateMsg) {
     if (message.errorCode) {
       this.showWsError(message.errorCode, message.errorMsg);
     } else {
-      this.processOnMessage(message);
+      this.processOnMessage(message as WebsocketDataMsg);
     }
     this.checkToClose();
   }
diff --git a/ui-ngx/src/app/modules/home/components/notification/notification-bell.component.ts b/ui-ngx/src/app/modules/home/components/notification/notification-bell.component.ts
index 8ee5771fe7..7c68b2df65 100644
--- a/ui-ngx/src/app/modules/home/components/notification/notification-bell.component.ts
+++ b/ui-ngx/src/app/modules/home/components/notification/notification-bell.component.ts
@@ -77,11 +77,11 @@ export class NotificationBellComponent implements OnDestroy {
     if ($event) {
       $event.stopPropagation();
     }
-    this.unsubscribeSubscription();
     const trigger = createVersionButton._elementRef.nativeElement;
     if (this.popoverService.hasPopover(trigger)) {
       this.popoverService.hidePopover(trigger);
     } else {
+      this.unsubscribeSubscription();
       const showNotificationPopover = this.popoverService.displayPopover(trigger, this.renderer,
         this.viewContainerRef, ShowNotificationPopoverComponent, 'bottom', true, null,
         {
@@ -108,5 +108,6 @@ export class NotificationBellComponent implements OnDestroy {
   private unsubscribeSubscription() {
     this.notificationCountSubscriber.unsubscribe();
     this.notificationSubscriber.unsubscribe();
+    this.notificationSubscriber = null;
   }
 }
diff --git a/ui-ngx/src/app/shared/models/telemetry/telemetry.models.ts b/ui-ngx/src/app/shared/models/telemetry/telemetry.models.ts
index 66f39d080a..57e94baef2 100644
--- a/ui-ngx/src/app/shared/models/telemetry/telemetry.models.ts
+++ b/ui-ngx/src/app/shared/models/telemetry/telemetry.models.ts
@@ -24,9 +24,11 @@ import { NgZone } from '@angular/core';
 import {
   AlarmCountQuery,
   AlarmData,
-  AlarmDataQuery, EntityCountQuery,
+  AlarmDataQuery,
+  EntityCountQuery,
   EntityData,
-  EntityDataQuery, EntityFilter,
+  EntityDataQuery,
+  EntityFilter,
   EntityKey,
   TsValue
 } from '@shared/models/query/query.models';
@@ -36,6 +38,16 @@ import { entityFields } from '@shared/models/entity.models';
 import { isUndefined } from '@core/utils';
 import { CmdWrapper, WsSubscriber } from '@shared/models/websocket/websocket.models';
 import { TelemetryWebsocketService } from '@core/ws/telemetry-websocket.service';
+import {
+  MarkAllAsReadCmd,
+  MarkAsReadCmd,
+  NotificationCountUpdateMsg,
+  NotificationsUpdateMsg,
+  UnreadCountSubCmd,
+  UnreadSubCmd,
+  UnsubscribeCmd
+} from '@shared/models/websocket/notification-ws.models';
+import { Notification } from '@shared/models/notification.models';
 
 export const NOT_SUPPORTED = 'Not supported!';
 
@@ -105,7 +117,7 @@ export const timeseriesDeleteStrategyTranslations = new Map<TimeseriesDeleteStra
     [TimeseriesDeleteStrategy.DELETE_LATEST_VALUE, 'attribute.delete-timeseries.latest-value'],
     [TimeseriesDeleteStrategy.DELETE_ALL_DATA_FOR_TIME_PERIOD, 'attribute.delete-timeseries.all-data-for-time-period']
   ]
-)
+);
 
 export interface AttributeData {
   lastUpdateTs?: number;
@@ -278,6 +290,11 @@ export class TelemetryPluginCmdsWrapper implements CmdWrapper {
     this.entityCountUnsubscribeCmds = [];
     this.alarmCountCmds = [];
     this.alarmCountUnsubscribeCmds = [];
+    this.unreadNotificationsCountSubCmds = [];
+    this.unreadNotificationsSubCmds = [];
+    this.notificationsUnsubCmds = [];
+    this.markNotificationAsReadCmds = [];
+    this.markAllNotificationsAsReadCmds = [];
   }
   attrSubCmds: Array<AttributesSubscriptionCmd>;
   tsSubCmds: Array<TimeseriesSubscriptionCmd>;
@@ -290,6 +307,11 @@ export class TelemetryPluginCmdsWrapper implements CmdWrapper {
   entityCountUnsubscribeCmds: Array<EntityCountUnsubscribeCmd>;
   alarmCountCmds: Array<AlarmCountCmd>;
   alarmCountUnsubscribeCmds: Array<AlarmCountUnsubscribeCmd>;
+  unreadNotificationsCountSubCmds: Array<UnreadCountSubCmd>;
+  unreadNotificationsSubCmds: Array<UnreadSubCmd>;
+  notificationsUnsubCmds: Array<UnsubscribeCmd>;
+  markNotificationAsReadCmds: Array<MarkAsReadCmd>;
+  markAllNotificationsAsReadCmds: Array<MarkAllAsReadCmd>;
 
   private static popCmds<T>(cmds: Array<T>, leftCount: number): Array<T> {
     const toPublish = Math.min(cmds.length, leftCount);
@@ -311,7 +333,12 @@ export class TelemetryPluginCmdsWrapper implements CmdWrapper {
       this.entityCountCmds.length > 0 ||
       this.entityCountUnsubscribeCmds.length > 0 ||
       this.alarmCountCmds.length > 0 ||
-      this.alarmCountUnsubscribeCmds.length > 0;
+      this.alarmCountUnsubscribeCmds.length > 0 ||
+      this.unreadNotificationsCountSubCmds.length > 0 ||
+      this.unreadNotificationsSubCmds.length > 0 ||
+      this.notificationsUnsubCmds.length  > 0 ||
+      this.markNotificationAsReadCmds.length > 0 ||
+      this.markAllNotificationsAsReadCmds.length > 0;
   }
 
   public clear() {
@@ -326,6 +353,11 @@ export class TelemetryPluginCmdsWrapper implements CmdWrapper {
     this.entityCountUnsubscribeCmds.length = 0;
     this.alarmCountCmds.length = 0;
     this.alarmCountUnsubscribeCmds.length = 0;
+    this.unreadNotificationsSubCmds.length = 0;
+    this.unreadNotificationsCountSubCmds.length = 0;
+    this.notificationsUnsubCmds.length = 0;
+    this.markNotificationAsReadCmds.length = 0;
+    this.markAllNotificationsAsReadCmds.length = 0;
   }
 
   public preparePublishCommands(maxCommands: number): TelemetryPluginCmdsWrapper {
@@ -352,6 +384,16 @@ export class TelemetryPluginCmdsWrapper implements CmdWrapper {
     preparedWrapper.alarmCountCmds = TelemetryPluginCmdsWrapper.popCmds(this.alarmCountCmds, leftCount);
     leftCount -= preparedWrapper.alarmCountCmds.length;
     preparedWrapper.alarmCountUnsubscribeCmds = TelemetryPluginCmdsWrapper.popCmds(this.alarmCountUnsubscribeCmds, leftCount);
+    leftCount -= preparedWrapper.unreadNotificationsSubCmds.length;
+    preparedWrapper.unreadNotificationsSubCmds = TelemetryPluginCmdsWrapper.popCmds(this.unreadNotificationsSubCmds, leftCount);
+    leftCount -= preparedWrapper.unreadNotificationsCountSubCmds.length;
+    preparedWrapper.unreadNotificationsCountSubCmds = TelemetryPluginCmdsWrapper.popCmds(this.unreadNotificationsCountSubCmds, leftCount);
+    leftCount -= preparedWrapper.notificationsUnsubCmds.length;
+    preparedWrapper.notificationsUnsubCmds = TelemetryPluginCmdsWrapper.popCmds(this.notificationsUnsubCmds, leftCount);
+    leftCount -= preparedWrapper.markNotificationAsReadCmds.length;
+    preparedWrapper.markNotificationAsReadCmds = TelemetryPluginCmdsWrapper.popCmds(this.markNotificationAsReadCmds, leftCount);
+    leftCount -= preparedWrapper.markAllNotificationsAsReadCmds.length;
+    preparedWrapper.markAllNotificationsAsReadCmds = TelemetryPluginCmdsWrapper.popCmds(this.markAllNotificationsAsReadCmds, leftCount);
     return preparedWrapper;
   }
 }
@@ -416,7 +458,7 @@ export interface AlarmCountUpdateMsg extends CmdUpdateMsg {
 }
 
 export type WebsocketDataMsg = AlarmDataUpdateMsg | AlarmCountUpdateMsg |
-  EntityDataUpdateMsg | EntityCountUpdateMsg | SubscriptionUpdateMsg;
+  EntityDataUpdateMsg | EntityCountUpdateMsg | SubscriptionUpdateMsg | NotificationCountUpdateMsg | NotificationsUpdateMsg;
 
 export const isEntityDataUpdateMsg = (message: WebsocketDataMsg): message is EntityDataUpdateMsg => {
   const updateMsg = (message as CmdUpdateMsg);
@@ -627,6 +669,28 @@ export class AlarmCountUpdate extends CmdUpdate {
   }
 }
 
+export class NotificationCountUpdate extends CmdUpdate {
+  totalUnreadCount: number;
+
+  constructor(msg: NotificationCountUpdateMsg) {
+    super(msg);
+    this.totalUnreadCount = msg.totalUnreadCount;
+  }
+}
+
+export class NotificationsUpdate extends CmdUpdate {
+  totalUnreadCount: number;
+  update?: Notification;
+  notifications?: Notification[];
+
+  constructor(msg: NotificationsUpdateMsg) {
+    super(msg);
+    this.totalUnreadCount = msg.totalUnreadCount;
+    this.update = msg.update;
+    this.notifications = msg.notifications;
+  }
+}
+
 export class TelemetrySubscriber extends WsSubscriber {
 
   private dataSubject = new ReplaySubject<SubscriptionUpdate>(1);
diff --git a/ui-ngx/src/app/shared/models/websocket/notification-ws.models.ts b/ui-ngx/src/app/shared/models/websocket/notification-ws.models.ts
index dffa828ae1..16280fe81a 100644
--- a/ui-ngx/src/app/shared/models/websocket/notification-ws.models.ts
+++ b/ui-ngx/src/app/shared/models/websocket/notification-ws.models.ts
@@ -14,36 +14,21 @@
 /// limitations under the License.
 ///
 
-import { BehaviorSubject, ReplaySubject } from 'rxjs';
-import { CmdUpdate, CmdUpdateMsg, CmdUpdateType, WebsocketCmd } from '@shared/models/telemetry/telemetry.models';
-import { map } from 'rxjs/operators';
+import {
+  CmdUpdateMsg,
+  CmdUpdateType,
+  NotificationCountUpdate,
+  NotificationsUpdate,
+  WebsocketCmd,
+  WebsocketDataMsg
+} from '@shared/models/telemetry/telemetry.models';
 import { NgZone } from '@angular/core';
 import { isDefinedAndNotNull } from '@core/utils';
 import { Notification } from '@shared/models/notification.models';
-import { CmdWrapper, WsSubscriber } from '@shared/models/websocket/websocket.models';
-import { NotificationWebsocketService } from '@core/ws/notification-websocket.service';
-
-export class NotificationCountUpdate extends CmdUpdate {
-  totalUnreadCount: number;
-
-  constructor(msg: NotificationCountUpdateMsg) {
-    super(msg);
-    this.totalUnreadCount = msg.totalUnreadCount;
-  }
-}
-
-export class NotificationsUpdate extends CmdUpdate {
-  totalUnreadCount: number;
-  update?: Notification;
-  notifications?: Notification[];
-
-  constructor(msg: NotificationsUpdateMsg) {
-    super(msg);
-    this.totalUnreadCount = msg.totalUnreadCount;
-    this.update = msg.update;
-    this.notifications = msg.notifications;
-  }
-}
+import { WsService, WsSubscriber } from '@shared/models/websocket/websocket.models';
+import { BehaviorSubject, ReplaySubject } from 'rxjs';
+import { map } from 'rxjs/operators';
+import { WebsocketService } from '@core/ws/websocket.service';
 
 export class NotificationSubscriber extends WsSubscriber {
   private notificationCountSubject = new ReplaySubject<NotificationCountUpdate>(1);
@@ -61,40 +46,40 @@ export class NotificationSubscriber extends WsSubscriber {
   public notificationCount$ = this.notificationCountSubject.asObservable().pipe(map(msg => msg.totalUnreadCount));
   public notifications$ = this.notificationsSubject.asObservable().pipe(map(msg => msg.notifications ));
 
-  public static createNotificationCountSubscription(notificationWsService: NotificationWebsocketService,
+  public static createNotificationCountSubscription(websocketService: WebsocketService<WsSubscriber>,
                                                     zone: NgZone): NotificationSubscriber {
     const subscriptionCommand = new UnreadCountSubCmd();
-    const subscriber = new NotificationSubscriber(notificationWsService, zone);
+    const subscriber = new NotificationSubscriber(websocketService, zone);
     subscriber.subscriptionCommands.push(subscriptionCommand);
     return subscriber;
   }
 
-  public static createNotificationsSubscription(notificationWsService: NotificationWebsocketService,
+  public static createNotificationsSubscription(websocketService: WebsocketService<WsSubscriber>,
                                                 zone: NgZone, limit = 10): NotificationSubscriber {
     const subscriptionCommand = new UnreadSubCmd(limit);
-    const subscriber = new NotificationSubscriber(notificationWsService, zone);
+    const subscriber = new NotificationSubscriber(websocketService, zone);
     subscriber.messageLimit = limit;
     subscriber.subscriptionCommands.push(subscriptionCommand);
     return subscriber;
   }
 
-  public static createMarkAsReadCommand(notificationWsService: NotificationWebsocketService,
+  public static createMarkAsReadCommand(websocketService: WebsocketService<WsSubscriber>,
                                         ids: string[]): NotificationSubscriber {
     const subscriptionCommand = new MarkAsReadCmd(ids);
-    const subscriber = new NotificationSubscriber(notificationWsService);
+    const subscriber = new NotificationSubscriber(websocketService);
     subscriber.subscriptionCommands.push(subscriptionCommand);
     return subscriber;
   }
 
-  public static createMarkAllAsReadCommand(notificationWsService: NotificationWebsocketService): NotificationSubscriber {
+  public static createMarkAllAsReadCommand(websocketService: WebsocketService<WsSubscriber>): NotificationSubscriber {
     const subscriptionCommand = new MarkAllAsReadCmd();
-    const subscriber = new NotificationSubscriber(notificationWsService);
+    const subscriber = new NotificationSubscriber(websocketService);
     subscriber.subscriptionCommands.push(subscriptionCommand);
     return subscriber;
   }
 
-  constructor(private notificationWsService: NotificationWebsocketService, protected zone?: NgZone) {
-    super(notificationWsService, zone);
+  constructor(private websocketService: WsService<any>, protected zone?: NgZone) {
+    super(websocketService, zone);
   }
 
   onNotificationCountUpdate(message: NotificationCountUpdate) {
@@ -183,58 +168,12 @@ export interface NotificationsUpdateMsg extends CmdUpdateMsg {
   notifications?: Notification[];
 }
 
-export type WebsocketNotificationMsg = NotificationCountUpdateMsg | NotificationsUpdateMsg;
-
-export const isNotificationCountUpdateMsg = (message: WebsocketNotificationMsg): message is NotificationCountUpdateMsg => {
+export const isNotificationCountUpdateMsg = (message: WebsocketDataMsg): message is NotificationCountUpdateMsg => {
   const updateMsg = (message as CmdUpdateMsg);
   return updateMsg.cmdId !== undefined && updateMsg.cmdUpdateType === CmdUpdateType.NOTIFICATIONS_COUNT;
 };
 
-export const isNotificationsUpdateMsg = (message: WebsocketNotificationMsg): message is NotificationsUpdateMsg => {
+export const isNotificationsUpdateMsg = (message: WebsocketDataMsg): message is NotificationsUpdateMsg => {
   const updateMsg = (message as CmdUpdateMsg);
   return updateMsg.cmdId !== undefined && updateMsg.cmdUpdateType === CmdUpdateType.NOTIFICATIONS;
 };
-
-export class NotificationPluginCmdWrapper implements CmdWrapper {
-
-  constructor() {
-    this.unreadCountSubCmd = null;
-    this.unreadSubCmd = null;
-    this.unsubCmd = null;
-    this.markAsReadCmd = null;
-    this.markAllAsReadCmd = null;
-  }
-
-  unreadCountSubCmd: UnreadCountSubCmd;
-  unreadSubCmd: UnreadSubCmd;
-  unsubCmd: UnsubscribeCmd;
-  markAsReadCmd: MarkAsReadCmd;
-  markAllAsReadCmd: MarkAllAsReadCmd;
-
-  public hasCommands(): boolean {
-    return isDefinedAndNotNull(this.unreadCountSubCmd) ||
-      isDefinedAndNotNull(this.unreadSubCmd) ||
-      isDefinedAndNotNull(this.unsubCmd) ||
-      isDefinedAndNotNull(this.markAsReadCmd) ||
-      isDefinedAndNotNull(this.markAllAsReadCmd);
-  }
-
-  public clear() {
-    this.unreadCountSubCmd = null;
-    this.unreadSubCmd = null;
-    this.unsubCmd = null;
-    this.markAsReadCmd = null;
-    this.markAllAsReadCmd = null;
-  }
-
-  public preparePublishCommands(): NotificationPluginCmdWrapper {
-    const preparedWrapper = new NotificationPluginCmdWrapper();
-    preparedWrapper.unreadCountSubCmd = this.unreadCountSubCmd || undefined;
-    preparedWrapper.unreadSubCmd = this.unreadSubCmd || undefined;
-    preparedWrapper.unsubCmd = this.unsubCmd || undefined;
-    preparedWrapper.markAsReadCmd = this.markAsReadCmd || undefined;
-    preparedWrapper.markAllAsReadCmd = this.markAllAsReadCmd || undefined;
-    this.clear();
-    return preparedWrapper;
-  }
-}