diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.html b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.html
index c2cf30a0..95ec3ac8 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.html
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.html
@@ -5,14 +5,37 @@
     <div fxFlex fxLayout="row" fxLayoutAlign="space-between center">
       <div fxLayout="row" fxLayoutAlign="start center">
         <!-- RESPONSIVE CHATS BUTTON-->
-        <button mat-icon-button aria-label="chats button" fxHide.gt-md class="responsive-chats-button">
+        <button
+          mat-icon-button
+          aria-label="chats button"
+          fxHide.gt-md
+          class="responsive-chats-button"
+        >
           <mat-icon>chat</mat-icon>
         </button>
         <!-- / RESPONSIVE CHATS BUTTON-->
       </div>
 
       <div>
-        <button mat-icon-button [matMenuTriggerFor]="contactMenu" aria-label="more">
+        <button
+          *ngIf="!!roomInfo"
+          mat-icon-button
+          (click)="onClickReceiveAlarm($event)"
+          aria-label="Toggle Receive Alarm"
+        >
+          <mat-icon class="amber-fg" *ngIf="roomInfo.receiveAlarm"
+            >notifications_active</mat-icon
+          >
+          <mat-icon class="secondary-text" *ngIf="!roomInfo.receiveAlarm"
+            >notifications_off</mat-icon
+          >
+        </button>
+
+        <button
+          mat-icon-button
+          [matMenuTriggerFor]="contactMenu"
+          aria-label="more"
+        >
           <mat-icon>more_vert</mat-icon>
         </button>
 
@@ -25,11 +48,18 @@
     </div>
   </mat-toolbar>
   <!-- / CHAT TOOLBAR -->
-  <mat-progress-bar *ngIf="eventListProcessing$ | async" mode="indeterminate"></mat-progress-bar>
+  <mat-progress-bar
+    *ngIf="eventListProcessing$ | async"
+    mode="indeterminate"
+  ></mat-progress-bar>
   <!-- CHAT CONTENT -->
   <div fxFlex="1 1 auto" class="chat-content" #messageBoxContainer>
     <!-- CHAT MESSAGES -->
-    <ucap-chat-messages [messages]="eventList$ | async" [userInfos]="userInfoList$ | async" [loginRes]="loginRes">
+    <ucap-chat-messages
+      [messages]="eventList$ | async"
+      [userInfos]="userInfoList$ | async"
+      [loginRes]="loginRes"
+    >
     </ucap-chat-messages>
     <!-- CHAT MESSAGES -->
   </div>
diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts
index 25deb750..a81ff6da 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts
@@ -14,6 +14,7 @@ import { Info, EventType } from '@ucap-webmessenger/protocol-event';
 
 import * as AppStore from '@app/store';
 import * as EventStore from '@app/store/messenger/event';
+import * as RoomStore from '@app/store/messenger/room';
 import { LoginResponse } from '@ucap-webmessenger/protocol-authentication';
 import { SessionStorageService } from '@ucap-webmessenger/web-storage';
 import { LoginInfo, KEY_LOGIN_INFO } from '@app/types';
@@ -108,6 +109,10 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewChecked {
     );
   }
 
+  onClickReceiveAlarm() {
+    this.store.dispatch(RoomStore.updateOnlyAlarm({ roomInfo: this.roomInfo }));
+  }
+
   private scrollToBottomForMessageBoxContainer(): void {
     try {
       this.messageBoxContainer.nativeElement.scrollTop = this.messageBoxContainer.nativeElement.scrollHeight;
diff --git a/projects/ucap-webmessenger-app/src/app/pages/template/components/template.page.component.ts b/projects/ucap-webmessenger-app/src/app/pages/template/components/template.page.component.ts
index 407db74b..241765e5 100644
--- a/projects/ucap-webmessenger-app/src/app/pages/template/components/template.page.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/pages/template/components/template.page.component.ts
@@ -106,7 +106,7 @@ const roomInfo: RoomInfo = {
   finalEventDate: '2019-09-30 13:57:06',
   joinUserCount: 2,
   noReadCnt: 0,
-  isAlarm: true,
+  receiveAlarm: true,
   isJoinRoom: true,
   expiredFileStdSeq: 0,
   isTimeRoom: true,
diff --git a/projects/ucap-webmessenger-app/src/app/store/messenger/room/actions.ts b/projects/ucap-webmessenger-app/src/app/store/messenger/room/actions.ts
index 1b6fcb4b..39e0df30 100644
--- a/projects/ucap-webmessenger-app/src/app/store/messenger/room/actions.ts
+++ b/projects/ucap-webmessenger-app/src/app/store/messenger/room/actions.ts
@@ -7,7 +7,9 @@ import {
   InviteNotification,
   ExitNotification,
   ExitForcingNotification,
-  UpdateFontNotification
+  UpdateFontNotification,
+  UpdateResponse,
+  UpdateRequest
 } from '@ucap-webmessenger/protocol-room';
 
 export const info = createAction(
@@ -48,3 +50,25 @@ export const updateFontNotification = createAction(
   '[Messenger::Room]  Update Font Notification',
   props<{ noti: UpdateFontNotification }>()
 );
+
+export const updateOnlyAlarm = createAction(
+  '[Messenger::Room] Update Only Alarm',
+  props<{ roomInfo: RoomInfo }>()
+);
+
+export const update = createAction(
+  '[Messenger::Room] Update',
+  props<{ req: UpdateRequest }>()
+);
+
+export const updateSuccess = createAction(
+  '[Messenger::Room] Update Success',
+  props<{
+    res: UpdateResponse;
+  }>()
+);
+
+export const updateFailure = createAction(
+  '[Messenger::Room] Update Failure',
+  props<{ error: any }>()
+);
diff --git a/projects/ucap-webmessenger-app/src/app/store/messenger/room/effects.ts b/projects/ucap-webmessenger-app/src/app/store/messenger/room/effects.ts
index 9c76f45d..8b91b6ea 100644
--- a/projects/ucap-webmessenger-app/src/app/store/messenger/room/effects.ts
+++ b/projects/ucap-webmessenger-app/src/app/store/messenger/room/effects.ts
@@ -2,12 +2,19 @@ import { Injectable } from '@angular/core';
 
 import { Actions, createEffect, ofType } from '@ngrx/effects';
 
-import { Store } from '@ngrx/store';
+import { Store, select } from '@ngrx/store';
 
 import { NGXLogger } from 'ngx-logger';
 
 import { of } from 'rxjs';
-import { tap, switchMap, map, catchError } from 'rxjs/operators';
+import {
+  tap,
+  switchMap,
+  map,
+  catchError,
+  exhaustMap,
+  withLatestFrom
+} from 'rxjs/operators';
 import {
   RoomInfo,
   UserInfoShort,
@@ -19,7 +26,8 @@ import {
   SSVC_TYPE_ROOM_INFO_USER2,
   SSVC_TYPE_ROOM_INFO_RES,
   UserShortData,
-  UserData
+  UserData,
+  UpdateResponse
 } from '@ucap-webmessenger/protocol-room';
 
 import * as ChatStore from '@app/store/messenger/chat';
@@ -31,7 +39,11 @@ import {
   inviteNotification,
   exitNotification,
   exitForcingNotification,
-  updateFontNotification
+  updateFontNotification,
+  updateOnlyAlarm,
+  update,
+  updateSuccess,
+  updateFailure
 } from './actions';
 import { SessionStorageService } from '@ucap-webmessenger/web-storage';
 import { LoginInfo, KEY_LOGIN_INFO } from '@app/types';
@@ -99,6 +111,38 @@ export class Effects {
     { dispatch: false }
   );
 
+  update$ = createEffect(() =>
+    this.actions$.pipe(
+      ofType(update),
+      map(action => action.req),
+      exhaustMap(req => {
+        return this.roomProtocolService.update(req).pipe(
+          map((res: UpdateResponse) => {
+            return updateSuccess({ res });
+          }),
+          catchError(error => of(updateFailure({ error })))
+        );
+      })
+    )
+  );
+
+  updateOnlyAlarm$ = createEffect(() =>
+    this.actions$.pipe(
+      ofType(updateOnlyAlarm),
+      map(action => action.roomInfo),
+      map(roomInfo =>
+        update({
+          req: {
+            roomSeq: roomInfo.roomSeq,
+            roomName: roomInfo.roomName,
+            receiveAlarm: !roomInfo.receiveAlarm,
+            syncAll: false
+          }
+        })
+      )
+    )
+  );
+
   inviteNotification$ = createEffect(
     () => {
       return this.actions$.pipe(
diff --git a/projects/ucap-webmessenger-app/src/app/store/messenger/room/reducers.ts b/projects/ucap-webmessenger-app/src/app/store/messenger/room/reducers.ts
index ac717cab..f963adb6 100644
--- a/projects/ucap-webmessenger-app/src/app/store/messenger/room/reducers.ts
+++ b/projects/ucap-webmessenger-app/src/app/store/messenger/room/reducers.ts
@@ -1,6 +1,6 @@
 import { createReducer, on } from '@ngrx/store';
 import { initialState } from './state';
-import { infoSuccess } from './actions';
+import { infoSuccess, updateSuccess } from './actions';
 
 import * as AuthenticationStore from '@app/store/account/authentication';
 
@@ -15,6 +15,17 @@ export const reducer = createReducer(
     };
   }),
 
+  on(updateSuccess, (state, action) => {
+    return {
+      ...state,
+      roomInfo: {
+        ...state.roomInfo,
+        roomName: action.res.roomName,
+        receiveAlarm: action.res.receiveAlarm
+      }
+    };
+  }),
+
   on(AuthenticationStore.logout, (state, action) => {
     return {
       ...initialState
diff --git a/projects/ucap-webmessenger-app/src/app/store/messenger/sync/reducers.ts b/projects/ucap-webmessenger-app/src/app/store/messenger/sync/reducers.ts
index 2db0ae37..f9e02997 100644
--- a/projects/ucap-webmessenger-app/src/app/store/messenger/sync/reducers.ts
+++ b/projects/ucap-webmessenger-app/src/app/store/messenger/sync/reducers.ts
@@ -19,6 +19,8 @@ import {
 } from '@ucap-webmessenger/protocol-sync';
 
 import * as AuthenticationStore from '@app/store/account/authentication';
+import * as RoomStore from '@app/store/messenger/room';
+import { RoomInfo } from '@ucap-webmessenger/protocol-room';
 
 export const reducer = createReducer(
   initialState,
@@ -95,6 +97,22 @@ export const reducer = createReducer(
     };
   }),
 
+  on(RoomStore.updateSuccess, (state, action) => {
+    const roomInfo: RoomInfo = {
+      ...state.room.entities[action.res.roomSeq],
+      roomName: action.res.roomName,
+      receiveAlarm: action.res.receiveAlarm
+    };
+
+    return {
+      ...state,
+      room: adapterRoom.updateOne(
+        { id: action.res.roomSeq, changes: roomInfo },
+        { ...state.room }
+      )
+    };
+  }),
+
   on(AuthenticationStore.logout, (state, action) => {
     return {
       ...initialState
diff --git a/projects/ucap-webmessenger-protocol-room/src/lib/models/room-info.ts b/projects/ucap-webmessenger-protocol-room/src/lib/models/room-info.ts
index 412b89af..bfe878d5 100644
--- a/projects/ucap-webmessenger-protocol-room/src/lib/models/room-info.ts
+++ b/projects/ucap-webmessenger-protocol-room/src/lib/models/room-info.ts
@@ -2,30 +2,30 @@ import { RoomType } from '../types/room.type';
 import { EventType } from '@ucap-webmessenger/protocol-event';
 
 export interface RoomInfo {
-  // 0. 대화방SEQ
+  /** 0. 대화방SEQ */
   roomSeq: string;
-  // 1. 대화방종류
+  /** 1. 대화방종류 */
   roomType: RoomType;
-  // 2. 대화방명
+  /** 2. 대화방명 */
   roomName: string;
-  // 3. 최종타입
+  /** 3. 최종타입 */
   finalEventType: EventType;
-  // 4. 최종대화
+  /** 4. 최종대화 */
   finalEventMessage: string;
-  // 5. 최종시간
+  /** 5. 최종시간 */
   finalEventDate: string;
-  // 6. 참여인원수
+  /** 6. 참여인원수 */
   joinUserCount: number;
-  // 7. 안읽은수
+  /** 7. 안읽은수 */
   noReadCnt: number;
-  // 8. 알람여부
-  isAlarm: boolean;
-  // 9. 참여여부
+  /** 8. 알람여부 */
+  receiveAlarm: boolean;
+  /** 9. 참여여부 */
   isJoinRoom: boolean;
-  // 10. 유효한파일 이벤트 기준 SEQ
+  /** 10. 유효한파일 이벤트 기준 SEQ */
   expiredFileStdSeq: number;
-  // 11. 타이머대화방여부YN
+  /** 11. 타이머대화방여부YN */
   isTimeRoom: boolean;
-  // 12. 타이머시간(n)
+  /** 12. 타이머시간(n) */
   timeRoomInterval: number;
 }
diff --git a/projects/ucap-webmessenger-protocol-room/src/lib/protocols/info.ts b/projects/ucap-webmessenger-protocol-room/src/lib/protocols/info.ts
index 253d7bee..4bfcbf5f 100644
--- a/projects/ucap-webmessenger-protocol-room/src/lib/protocols/info.ts
+++ b/projects/ucap-webmessenger-protocol-room/src/lib/protocols/info.ts
@@ -90,7 +90,7 @@ export const decodeInfoData: ProtocolDecoder<InfoData> = (
         finalEventDate: info[5],
         joinUserCount: Number(info[6]),
         noReadCnt: Number(info[7]),
-        isAlarm: info[8] !== 'N' ? true : false,
+        receiveAlarm: info[8] !== 'N' ? true : false,
         isJoinRoom: info[9] === 'Y' ? true : false,
         expiredFileStdSeq: Number(info[10]),
         isTimeRoom: info[11] === 'Y' ? true : false,
diff --git a/projects/ucap-webmessenger-protocol-room/src/lib/protocols/update.ts b/projects/ucap-webmessenger-protocol-room/src/lib/protocols/update.ts
index a400ccde..d191ec6c 100644
--- a/projects/ucap-webmessenger-protocol-room/src/lib/protocols/update.ts
+++ b/projects/ucap-webmessenger-protocol-room/src/lib/protocols/update.ts
@@ -11,25 +11,25 @@ import {
 } from '@ucap-webmessenger/protocol';
 
 export interface UpdateRequest extends ProtocolRequest {
-  // 대화방SEQ(s)
+  /** 대화방SEQ(s) */
   roomSeq: string;
-  // 대화방제목(s)
+  /** 대화방제목(s) */
   roomName: string;
-  // 알람여부(y)
-  isAlarm: boolean;
-  // 동기화여부(s)
-  isSyncAll: boolean;
+  /** 알람여부(y) */
+  receiveAlarm: boolean;
+  /** 동기화여부(s) */
+  syncAll: boolean;
 }
 
 export interface UpdateResponse extends ProtocolResponse {
-  // 대화방SEQ(s)
+  /** 대화방SEQ(s) */
   roomSeq: string;
-  // 대화방제목(s)
+  /** 대화방제목(s) */
   roomName: string;
-  // 알람여부(y)
-  isAlarm: boolean;
-  // 동기화여부(s)
-  isSyncAll: boolean;
+  /** 알람여부(y) */
+  receiveAlarm: boolean;
+  /** 동기화여부(s) */
+  syncAll: boolean;
 }
 
 export const encodeUpdate: ProtocolEncoder<UpdateRequest> = (
@@ -41,11 +41,11 @@ export const encodeUpdate: ProtocolEncoder<UpdateRequest> = (
   bodyList.push({ type: PacketBodyValue.String, value: req.roomName });
   bodyList.push({
     type: PacketBodyValue.String,
-    value: req.isAlarm ? 'Y' : 'N'
+    value: req.receiveAlarm ? 'Y' : 'N'
   });
   bodyList.push({
     type: PacketBodyValue.String,
-    value: req.isSyncAll ? 'Y' : 'N'
+    value: req.syncAll ? 'Y' : 'N'
   });
   return bodyList;
 };
@@ -56,8 +56,8 @@ export const decodeUpdate: ProtocolDecoder<UpdateResponse> = (
   return decodeProtocolMessage(message, {
     roomSeq: message.bodyList[0],
     roomName: message.bodyList[1],
-    isAlarm: message.bodyList[2] === 'Y' ? true : false,
-    isSyncAll: message.bodyList[3] === 'Y' ? true : false
+    receiveAlarm: message.bodyList[2] === 'Y' ? true : false,
+    syncAll: message.bodyList[3] === 'Y' ? true : false
   } as UpdateResponse);
 };
 
diff --git a/projects/ucap-webmessenger-protocol-sync/src/lib/protocols/room.ts b/projects/ucap-webmessenger-protocol-sync/src/lib/protocols/room.ts
index 90249964..2fffe788 100644
--- a/projects/ucap-webmessenger-protocol-sync/src/lib/protocols/room.ts
+++ b/projects/ucap-webmessenger-protocol-sync/src/lib/protocols/room.ts
@@ -84,7 +84,7 @@ export const decodeRoomData: ProtocolDecoder<RoomData> = (
         finalEventDate: info[5],
         joinUserCount: Number(info[6]),
         noReadCnt: Number(info[7]),
-        isAlarm: info[8] !== 'N' ? true : false,
+        receiveAlarm: info[8] !== 'N' ? true : false,
         isJoinRoom: info[9] === 'Y' ? true : false,
         expiredFileStdSeq: Number(info[10]),
         isTimeRoom: info[11] === 'Y' ? true : false,
diff --git a/projects/ucap-webmessenger-ui-chat/src/lib/components/messages.component.ts b/projects/ucap-webmessenger-ui-chat/src/lib/components/messages.component.ts
index 797d512e..639da6a2 100644
--- a/projects/ucap-webmessenger-ui-chat/src/lib/components/messages.component.ts
+++ b/projects/ucap-webmessenger-ui-chat/src/lib/components/messages.component.ts
@@ -36,6 +36,10 @@ export class MessagesComponent implements OnInit {
   }
 
   getUserName(seq: number): string {
+    if (!this.userInfos) {
+      return '';
+    }
+
     const userInfo: UserInfo[] = this.userInfos.filter(
       user => user.seq === seq
     );
@@ -45,6 +49,10 @@ export class MessagesComponent implements OnInit {
     return '(알수없는 사용자)';
   }
   getUserProfile(seq: number): string {
+    if (!this.userInfos) {
+      return '';
+    }
+
     const userInfo: UserInfo[] = this.userInfos.filter(
       user => user.seq === seq
     );