diff --git a/projects/ucap-webmessenger-protocol-query/src/lib/models/dept-user.ts b/projects/ucap-webmessenger-protocol-query/src/lib/models/dept-user.ts
new file mode 100644
index 00000000..af5e2ad5
--- /dev/null
+++ b/projects/ucap-webmessenger-protocol-query/src/lib/models/dept-user.ts
@@ -0,0 +1,199 @@
+import {
+  ProtocolRequest,
+  ProtocolResponse,
+  ProtocolEncoder,
+  PacketBody,
+  ProtocolDecoder,
+  ProtocolMessage,
+  PacketBodyValue,
+  BodyStringDivider,
+  ProtocolStream
+} from '@ucap-webmessenger/protocol';
+import {
+  DeviceType,
+  FileTransferPermissions,
+  OrganizationChartPermissions,
+  DefaultScreen,
+  VideoConferenceType
+} from '@ucap-webmessenger/core';
+import { DeptType, DeptSearchType } from '../types/dept.type';
+import { EmployeeType } from '@ucap-webmessenger/protocol-room';
+import { RoleCode } from '@ucap-webmessenger/protocol-authentication';
+
+export interface DeptUserRequest extends ProtocolRequest {
+  // DivCD(s)
+  divCd: string;
+  // 기관코드(s)
+  companyCode: string;
+  // 부서SEQ(n)
+  seq?: number;
+  // 검색string(s)
+  search?: string;
+  // 검색범위(s)
+  searchRange: DeptSearchType;
+  // 요청리스트(n) 사용안하면 0 최대 200
+  pageListCount?: number;
+  // 요청페이지(n) 사용안하면 0 처음은 1
+  pageCurrent?: number;
+  // 발신자회사코드(s)
+  senderCompanyCode: string;
+  // 발신자임직원유형(s)
+  senderEmployeeType: EmployeeType;
+}
+
+export interface UserInfoSS {
+  // 사용자SEQ
+  seq: number;
+  // 사용자명
+  name: string;
+  // 사진파일
+  profileImageFile: string;
+  // 직급
+  grade: string;
+  // 업무소개
+  intro: string;
+  // 기관코드
+  companyCode: string;
+  // 핸드폰번호
+  hpNumber: string;
+  // 내선번호
+  lineNumber: string;
+  // 이메일
+  email: string;
+  // 모바일YN
+  isMobile: boolean;
+  // 부서명
+  deptName: string;
+  // 조회순서
+  order: string;
+  // ActiveYN
+  isActive: boolean;
+  // 역할코드
+  roleCd: RoleCode;
+  // 사번
+  employeeNum: string;
+  // MADN
+  madn: string;
+  // HARDPHONE_SADN
+  hardSadn: string;
+  // FMC_SADN
+  fmcSadn: string;
+  // CALL_MODE
+  callMode: string;
+  // 사용자명(영어)
+  nameEn: string;
+  // 사용자명(중국어)
+  nameCn: string;
+  // 직급(영어)
+  gradeEn: string;
+  // 직급(중국어)
+  gradeCn: string;
+  // 부서명(영어)
+  deptNameEn: string;
+  // 부서명(중국어)
+  deptNameCn: string;
+  // 부서SEQ
+  deptSeq: number;
+  // 이용약관동의여부YN
+  isPrivacyAgree: boolean;
+  // 유효접속여부YN
+  isValidLogin: boolean;
+  // 임직원유형(s)
+  employeeType: EmployeeType;
+}
+export interface DeptUserData extends ProtocolStream {
+  // DivCD(s)
+  divCd: string;
+  // {부서정보-S}...
+  userInfos: UserInfoSS[];
+}
+export interface DeptUserResponse extends ProtocolResponse {
+  // DivCD(s)
+  divCd: string;
+  // 전체갯수(n)
+  pageTotalCount: number;
+  // 요청리스트(n)
+  pageListCount?: number;
+  // 페이지(n)
+  pageCurrent?: number;
+}
+
+export const encodeDeptUser: ProtocolEncoder<DeptUserRequest> = (
+  req: DeptUserRequest
+) => {
+  const bodyList: PacketBody[] = [];
+
+  bodyList.push({ type: PacketBodyValue.String, value: req.divCd });
+  bodyList.push({ type: PacketBodyValue.String, value: req.companyCode });
+  bodyList.push({ type: PacketBodyValue.Integer, value: req.seq || 0 });
+  bodyList.push({ type: PacketBodyValue.String, value: req.search || '' });
+  bodyList.push({ type: PacketBodyValue.String, value: req.searchRange });
+  bodyList.push({
+    type: PacketBodyValue.Integer,
+    value: req.pageListCount || 0
+  });
+  bodyList.push({ type: PacketBodyValue.Integer, value: req.pageCurrent || 0 });
+  bodyList.push({ type: PacketBodyValue.String, value: req.senderCompanyCode });
+  bodyList.push({
+    type: PacketBodyValue.String,
+    value: req.senderEmployeeType
+  });
+
+  return bodyList;
+};
+
+export const decodeDeptUserData: ProtocolDecoder<DeptUserData> = (
+  message: ProtocolMessage
+) => {
+  const userInfos: UserInfoSS[] = [];
+  message.bodyList.slice(1).forEach(userInfo => {
+    const info = userInfo.split(BodyStringDivider);
+    let i = 0;
+    userInfos.push({
+      seq: info[i],
+      name: info[i++],
+      profileImageFile: info[i++],
+      grade: info[i++],
+      intro: info[i++],
+      companyCode: info[i++],
+      hpNumber: info[i++],
+      lineNumber: info[i++],
+      email: info[i++],
+      isMobile: info[i++] === 'Y' ? true : false,
+      deptName: info[i++],
+      order: info[i++],
+      isActive: info[i++] === 'Y' ? true : false,
+      roleCd: info[i++] as RoleCode,
+      employeeNum: info[i++],
+      madn: info[i++],
+      hardSadn: info[i++],
+      fmcSadn: info[i++],
+      callMode: info[i++],
+      nameEn: info[i++],
+      nameCn: info[i++],
+      gradeEn: info[i++],
+      gradeCn: info[i++],
+      deptNameEn: info[i++],
+      deptNameCn: info[i++],
+      deptSeq: info[i++],
+      isPrivacyAgree: info[i++] === 'Y' ? true : false,
+      isValidLogin: info[i++] === 'Y' ? true : false,
+      employeeType: info[i++] as EmployeeType
+    });
+  });
+  return {
+    divCd: message.bodyList[0],
+    userInfos
+  } as DeptUserData;
+};
+
+export const decodeDeptUser: ProtocolDecoder<DeptUserResponse> = (
+  message: ProtocolMessage
+) => {
+  return {
+    divCd: message.bodyList[0],
+    pageTotalCount: message.bodyList[1],
+    pageListCount: message.bodyList[2],
+    pageCurrent: message.bodyList[3]
+  } as DeptUserResponse;
+};
diff --git a/projects/ucap-webmessenger-protocol-query/src/lib/models/dept.ts b/projects/ucap-webmessenger-protocol-query/src/lib/models/dept.ts
new file mode 100644
index 00000000..1e5b56ac
--- /dev/null
+++ b/projects/ucap-webmessenger-protocol-query/src/lib/models/dept.ts
@@ -0,0 +1,95 @@
+import {
+  ProtocolRequest,
+  ProtocolResponse,
+  ProtocolEncoder,
+  PacketBody,
+  ProtocolDecoder,
+  ProtocolMessage,
+  PacketBodyValue,
+  BodyStringDivider,
+  ProtocolStream
+} from '@ucap-webmessenger/protocol';
+import { DeptType } from '../types/dept.type';
+
+export interface DeptRequest extends ProtocolRequest {
+  // DivCD(s)
+  divCd: string;
+  // 기관코드(s)
+  companyCode: string;
+}
+
+export interface DeptInfo {
+  // 부서SEQ
+  seq: number;
+  // 부서명
+  name: string;
+  // 기관코드
+  companyCode: string;
+  // 부서타입
+  type: DeptType;
+  // 본부SEQ
+  rootSeq: number;
+  // 상위부서SEQ
+  parentSeq: number;
+  // 조회순서
+  order: string;
+  // 조회레벨
+  depth: number;
+  // ActiveYN
+  isActive: boolean;
+  // 부서명(영어)
+  nameEn: string;
+  // 부서명(중국어)
+  nameCn: string;
+}
+export interface DeptData extends ProtocolStream {
+  // DivCD(s)
+  divCd: string;
+  // {부서정보-S}...
+  departmentInfos: DeptInfo[];
+}
+export interface DeptResponse extends ProtocolResponse {
+  // DivCD(s)
+  divCd: string;
+}
+
+export const encodeDept: ProtocolEncoder<DeptRequest> = (req: DeptRequest) => {
+  const bodyList: PacketBody[] = [];
+
+  bodyList.push({ type: PacketBodyValue.String, value: req.divCd });
+  bodyList.push({ type: PacketBodyValue.String, value: req.companyCode });
+  return bodyList;
+};
+
+export const decodeDeptData: ProtocolDecoder<DeptData> = (
+  message: ProtocolMessage
+) => {
+  const departmentInfos: DeptInfo[] = [];
+  message.bodyList.slice(1).forEach(deptInfo => {
+    const info = deptInfo.split(BodyStringDivider);
+    let i = 0;
+    departmentInfos.push({
+      seq: info[i],
+      name: info[i++],
+      companyCode: info[i++],
+      type: info[i++] as DeptType,
+      rootSeq: info[i++],
+      parentSeq: info[i++],
+      order: info[i++],
+      depth: info[i++],
+      isActive: info[i++] === 'Y' ? true : false,
+      nameEn: info[i++],
+      nameCn: info[i++]
+    });
+  });
+  return {
+    divCd: message.bodyList[0],
+    departmentInfos
+  } as DeptData;
+};
+
+export const decodeDept: ProtocolDecoder<DeptResponse> = (
+  message: ProtocolMessage
+) => {
+  return { divCd: message.bodyList[0] } as DeptResponse;
+};
diff --git a/projects/ucap-webmessenger-protocol-query/src/lib/services/query-protocol.service.ts b/projects/ucap-webmessenger-protocol-query/src/lib/services/query-protocol.service.ts
index f2df4933..e79ac75f 100644
--- a/projects/ucap-webmessenger-protocol-query/src/lib/services/query-protocol.service.ts
+++ b/projects/ucap-webmessenger-protocol-query/src/lib/services/query-protocol.service.ts
@@ -1,7 +1,7 @@
 import { Injectable } from '@angular/core';
 import { ProtocolService } from '@ucap-webmessenger/protocol';
 import { Observable } from 'rxjs';
-import { take, map } from 'rxjs/operators';
+import { take, map, takeWhile } from 'rxjs/operators';
 import {
   AuthRequest,
   AuthResponse,
@@ -10,8 +10,30 @@ import {
 } from '../models/auth';
 import {
   SVC_TYPE_QUERY_DATA,
-  SSVC_TYPE_QUERY_AUTH_REQ
+  SSVC_TYPE_QUERY_AUTH_REQ,
+  SSVC_TYPE_QUERY_DEPT_REQ,
+  SSVC_TYPE_QUERY_DEPT_RES,
+  SSVC_TYPE_QUERY_DEPT_DATA,
+  SSVC_TYPE_QUERY_DEPT_USER_RES,
+  SSVC_TYPE_QUERY_DEPT_USER_DATA,
+  SSVC_TYPE_QUERY_DEPT_USER_REQ
 } from '../types/service';
+import {
+  DeptRequest,
+  DeptResponse,
+  encodeDept,
+  decodeDept,
+  decodeDeptData,
+  DeptData
+} from '../models/dept';
+import {
+  encodeDeptUser,
+  decodeDeptUser,
+  decodeDeptUserData,
+  DeptUserRequest,
+  DeptUserData,
+  DeptUserResponse
+} from '../models/dept-user';
 
 @Injectable({
   providedIn: 'root'
@@ -27,4 +49,48 @@ export class QueryProtocolService {
         map(res => decodeAuth(res))
       );
   }
+
+  public dept(req: DeptRequest): Observable<DeptResponse | DeptData> {
+    return this.protocolService
+      .call(SVC_TYPE_QUERY_DATA, SSVC_TYPE_QUERY_DEPT_REQ, ...encodeDept(req))
+      .pipe(
+        takeWhile(res => SSVC_TYPE_QUERY_DEPT_RES !== res.subServiceType, true),
+        map(res => {
+          if (SSVC_TYPE_QUERY_DEPT_DATA === res.subServiceType) {
+            return { ...decodeDeptData(res), Type: SSVC_TYPE_QUERY_DEPT_DATA };
+          }
+
+          return { ...decodeDept(res), Type: SSVC_TYPE_QUERY_DEPT_RES };
+        })
+      );
+  }
+  public deptUser(
+    req: DeptUserRequest
+  ): Observable<DeptUserResponse | DeptUserData> {
+    return this.protocolService
+      .call(
+        SVC_TYPE_QUERY_DATA,
+        SSVC_TYPE_QUERY_DEPT_USER_REQ,
+        ...encodeDeptUser(req)
+      )
+      .pipe(
+        takeWhile(
+          res => SSVC_TYPE_QUERY_DEPT_USER_RES !== res.subServiceType,
+          true
+        ),
+        map(res => {
+          if (SSVC_TYPE_QUERY_DEPT_USER_DATA === res.subServiceType) {
+            return {
+              ...decodeDeptUserData(res),
+              Type: SSVC_TYPE_QUERY_DEPT_USER_DATA
+            };
+          }
+
+          return {
+            ...decodeDeptUser(res),
+            Type: SSVC_TYPE_QUERY_DEPT_USER_RES
+          };
+        })
+      );
+  }
 }
diff --git a/projects/ucap-webmessenger-protocol-query/src/lib/types/dept.type.ts b/projects/ucap-webmessenger-protocol-query/src/lib/types/dept.type.ts
new file mode 100644
index 00000000..2783f927
--- /dev/null
+++ b/projects/ucap-webmessenger-protocol-query/src/lib/types/dept.type.ts
@@ -0,0 +1,19 @@
+export enum DeptType {
+  // R: 기관Root
+  Root = 'R',
+  // D: 본부
+  Department = 'D',
+  // T: 부서
+  Team = 'T'
+}
+
+export enum DeptSearchType {
+  // A: 부서, 인원
+  All = 'A',
+  // U: 인원
+  User = 'U',
+  // D: 부서
+  Department = 'D',
+  // M: 다중부서 cf) 여러 부서(하위전체)를 쿼리할 때 1, 2, 3, 4..이렇게 부서SEQ들을, 로 연결해서 보냄 (검색string 필드를 사용함)
+  MultiDepartment = 'M'
+}
diff --git a/projects/ucap-webmessenger-protocol-query/src/public-api.ts b/projects/ucap-webmessenger-protocol-query/src/public-api.ts
index 14062a62..8e28590a 100644
--- a/projects/ucap-webmessenger-protocol-query/src/public-api.ts
+++ b/projects/ucap-webmessenger-protocol-query/src/public-api.ts
@@ -3,9 +3,12 @@
  */
 
 export * from './lib/models/auth';
+export * from './lib/models/dept';
+export * from './lib/models/dept-user';
 
 export * from './lib/services/query-protocol.service';
 
+export * from './lib/types/dept.type';
 export * from './lib/types/service';
 
 export * from './lib/ucap-query-protocol.module';