diff --git a/projects/ucap-webmessenger-protocol-info/src/lib/models/status.ts b/projects/ucap-webmessenger-protocol-info/src/lib/models/status.ts
new file mode 100644
index 00000000..f3b8cb53
--- /dev/null
+++ b/projects/ucap-webmessenger-protocol-info/src/lib/models/status.ts
@@ -0,0 +1,58 @@
+import { DeviceType, LocaleCode, StatusCode } from '@ucap-webmessenger/core';
+import {
+  ProtocolRequest,
+  ProtocolResponse,
+  ProtocolEncoder,
+  PacketBody,
+  PacketBodyValue,
+  ProtocolDecoder,
+  ProtocolMessage,
+  ProtocolNotification,
+  BodyStringDivider
+} from '@ucap-webmessenger/protocol';
+import { UserInfoUpdateType } from '../types/user-info-update.type';
+import { StatusInfo } from '@ucap-webmessenger/protocol-status';
+
+export interface StatusRequest extends ProtocolRequest {
+  // 사용자SEQ(n)...
+  userSeqs: number[];
+}
+
+export interface StatusResponse extends ProtocolResponse {
+  // {상태정보}...
+  statusInfos: StatusInfo[];
+}
+
+export const encodeStatus: ProtocolEncoder<StatusRequest> = (
+  req: StatusRequest
+) => {
+  const bodyList: PacketBody[] = [];
+
+  req.userSeqs.forEach(userSeq => {
+    bodyList.push({ type: PacketBodyValue.Integer, value: userSeq });
+  });
+  return bodyList;
+};
+
+export const decodeStatus: ProtocolDecoder<StatusResponse> = (
+  message: ProtocolMessage
+) => {
+  const statusInfos: StatusInfo[] = [];
+  message.bodyList.forEach(statusInfo => {
+    const info = statusInfo.split(BodyStringDivider);
+    let idx = 0;
+    statusInfos.push({
+      userSeq: info[idx],
+      pcStatus: info[idx++] as StatusCode,
+      phoneStatus: info[idx++] as StatusCode,
+      mobileStatus: info[idx++] as StatusCode,
+      conferenceStatus: info[idx++] as StatusCode,
+      statusMessage: info[idx++],
+      mobileConferenceStatus: info[idx++] as StatusCode,
+      imessengerStatus: info[idx++] as StatusCode
+    });
+  });
+  return {
+    statusInfos
+  } as StatusResponse;
+};
diff --git a/projects/ucap-webmessenger-protocol-info/src/lib/models/user-option.ts b/projects/ucap-webmessenger-protocol-info/src/lib/models/user-option.ts
new file mode 100644
index 00000000..96f1d82e
--- /dev/null
+++ b/projects/ucap-webmessenger-protocol-info/src/lib/models/user-option.ts
@@ -0,0 +1,50 @@
+import { DeviceType, LocaleCode, CallerType } from '@ucap-webmessenger/core';
+import {
+  ProtocolRequest,
+  ProtocolResponse,
+  ProtocolEncoder,
+  PacketBody,
+  PacketBodyValue,
+  ProtocolDecoder,
+  ProtocolMessage,
+  ProtocolNotification
+} from '@ucap-webmessenger/protocol';
+import { UserInfoUpdateType } from '../types/user-info-update.type';
+
+export interface UserOptionResponse extends ProtocolResponse {
+  // 타입(s)
+  type: CallerType;
+}
+
+export const decodeUserOption: ProtocolDecoder<UserOptionResponse> = (
+  message: ProtocolMessage
+) => {
+  return { type: message.bodyList[0] as CallerType } as UserOptionResponse;
+};
+
+export interface UserOptionUpdateRequest extends ProtocolRequest {
+  // 타입(s)
+  type: CallerType;
+}
+
+export interface UserOptionUpdateResponse extends ProtocolResponse {
+  // 타입(s)
+  type: CallerType;
+}
+
+export const encodeUserOptionUpdate: ProtocolEncoder<
+  UserOptionUpdateRequest
+> = (req: UserOptionUpdateRequest) => {
+  const bodyList: PacketBody[] = [];
+
+  bodyList.push({ type: PacketBodyValue.String, value: req.type });
+  return bodyList;
+};
+
+export const decodeUserOptionUpdate: ProtocolDecoder<
+  UserOptionUpdateResponse
+> = (message: ProtocolMessage) => {
+  return {
+    type: message.bodyList[0] as CallerType
+  } as UserOptionUpdateResponse;
+};
diff --git a/projects/ucap-webmessenger-protocol-info/src/lib/models/user.ts b/projects/ucap-webmessenger-protocol-info/src/lib/models/user.ts
new file mode 100644
index 00000000..ac6e9974
--- /dev/null
+++ b/projects/ucap-webmessenger-protocol-info/src/lib/models/user.ts
@@ -0,0 +1,62 @@
+import { DeviceType, LocaleCode } from '@ucap-webmessenger/core';
+import {
+  ProtocolRequest,
+  ProtocolResponse,
+  ProtocolEncoder,
+  PacketBody,
+  PacketBodyValue,
+  ProtocolDecoder,
+  ProtocolMessage,
+  ProtocolNotification
+} from '@ucap-webmessenger/protocol';
+import { UserInfoUpdateType } from '../types/user-info-update.type';
+
+export interface UserRequest extends ProtocolRequest {
+  // 타입(s)
+  type: UserInfoUpdateType;
+  // 정보(s)
+  info: string;
+}
+
+export interface UserResponse extends ProtocolResponse {
+  // 타입(s)
+  type: UserInfoUpdateType;
+  // 정보(s)
+  info: string;
+}
+
+export interface UserNotification extends ProtocolNotification {
+  // 타입(s)
+  type: UserInfoUpdateType;
+  // 정보(s)
+  info: string;
+}
+
+export const encodeUser: ProtocolEncoder<UserRequest> = (req: UserRequest) => {
+  const bodyList: PacketBody[] = [];
+
+  bodyList.push(
+    { type: PacketBodyValue.String, value: req.type },
+    { type: PacketBodyValue.String, value: req.info }
+  );
+
+  return bodyList;
+};
+
+export const decodeUser: ProtocolDecoder<UserResponse> = (
+  message: ProtocolMessage
+) => {
+  return {
+    type: message.bodyList[0] as UserInfoUpdateType,
+    info: message.bodyList[1]
+  } as UserResponse;
+};
+
+export const decodeUserNotification: ProtocolDecoder<UserNotification> = (
+  message: ProtocolMessage
+) => {
+  return {
+    type: message.bodyList[0] as UserInfoUpdateType,
+    info: message.bodyList[1]
+  } as UserNotification;
+};
diff --git a/projects/ucap-webmessenger-protocol-info/src/lib/services/info-protocol.service.ts b/projects/ucap-webmessenger-protocol-info/src/lib/services/info-protocol.service.ts
index 60575e70..11ef17d9 100644
--- a/projects/ucap-webmessenger-protocol-info/src/lib/services/info-protocol.service.ts
+++ b/projects/ucap-webmessenger-protocol-info/src/lib/services/info-protocol.service.ts
@@ -1,8 +1,82 @@
 import { Injectable } from '@angular/core';
 
+import { Observable } from 'rxjs';
+import { map, take } from 'rxjs/operators';
+
+import { ProtocolService } from '@ucap-webmessenger/protocol';
+import {
+  SVC_TYPE_INFO,
+  SSVC_TYPE_INFO_USER_REQ,
+  SSVC_TYPE_INFO_STATE_REQ,
+  SSVC_TYPE_INFO_USER_OPTION_REQ,
+  SSVC_TYPE_INFO_USER_OPTION_UPD_REQ
+} from '../types/service';
+import {
+  UserRequest,
+  encodeUser,
+  UserResponse,
+  decodeUser
+} from '../models/user';
+import {
+  StatusRequest,
+  StatusResponse,
+  encodeStatus,
+  decodeStatus
+} from '../models/status';
+import {
+  UserOptionResponse,
+  decodeUserOption,
+  UserOptionUpdateRequest,
+  encodeUserOptionUpdate,
+  UserOptionUpdateResponse,
+  decodeUserOptionUpdate
+} from '../models/user-option';
+
 @Injectable({
   providedIn: 'root'
 })
 export class InfoProtocolService {
-  constructor() {}
+  constructor(private protocolService: ProtocolService) {}
+
+  public user(req: UserRequest): Observable<UserResponse> {
+    return this.protocolService
+      .call(SVC_TYPE_INFO, SSVC_TYPE_INFO_USER_REQ, ...encodeUser(req))
+      .pipe(
+        take(1),
+        map(res => decodeUser(res))
+      );
+  }
+
+  public status(req: StatusRequest): Observable<StatusResponse> {
+    return this.protocolService
+      .call(SVC_TYPE_INFO, SSVC_TYPE_INFO_STATE_REQ, ...encodeStatus(req))
+      .pipe(
+        take(1),
+        map(res => decodeStatus(res))
+      );
+  }
+
+  public userOption(): Observable<UserOptionResponse> {
+    return this.protocolService
+      .call(SVC_TYPE_INFO, SSVC_TYPE_INFO_USER_OPTION_REQ)
+      .pipe(
+        take(1),
+        map(res => decodeUserOption(res))
+      );
+  }
+
+  public userOptionUpdate(
+    req: UserOptionUpdateRequest
+  ): Observable<UserOptionUpdateResponse> {
+    return this.protocolService
+      .call(
+        SVC_TYPE_INFO,
+        SSVC_TYPE_INFO_USER_OPTION_UPD_REQ,
+        ...encodeUserOptionUpdate(req)
+      )
+      .pipe(
+        take(1),
+        map(res => decodeUserOptionUpdate(res))
+      );
+  }
 }
diff --git a/projects/ucap-webmessenger-protocol-info/src/lib/types/service.ts b/projects/ucap-webmessenger-protocol-info/src/lib/types/service.ts
new file mode 100644
index 00000000..1f0841ba
--- /dev/null
+++ b/projects/ucap-webmessenger-protocol-info/src/lib/types/service.ts
@@ -0,0 +1,14 @@
+export const SVC_TYPE_INFO = 30;
+export const SSVC_TYPE_INFO_USER_REQ = 1; // 사용자 정보 변경 요청
+export const SSVC_TYPE_INFO_USER_RES = 2;
+export const SSVC_TYPE_INFO_USER_NOTI = 3;
+export const SSVC_TYPE_INFO_STATE_REQ = 11; // 사용자 상태 정보 요청
+export const SSVC_TYPE_INFO_STATE_RES = 13; // 사용자 상태 정보 응답
+export const SSVC_TYPE_INFO_USER_OPTION_REQ = 21; // 사용자 환경 정보 요청
+export const SSVC_TYPE_INFO_USER_OPTION_RES = 22; // 사용자 환경 정보 응답
+export const SSVC_TYPE_INFO_USER_OPTION_UPD_REQ = 23; // 사용자 환경 정보 변경 요청
+export const SSVC_TYPE_INFO_USER_OPTION_UPD_RES = 24; // 사용자 환경 정보 변경 응답
+export const SSVC_TYPE_INFO_QUERY_SESSION_REQ = 41; // 세션 정보 요청
+export const SSVC_TYPE_INFO_QUERY_SESSION_RES = 42; // 세션 정보 응답
+export const SSVC_TYPE_INFO_BUDDY_NICKNAME_REQ = 51; // 동료 닉네임 변경 요청
+export const SSVC_TYPE_INFO_BUDDY_NICKNAME_RES = 52; // 동료 닉네임 변경 응답
diff --git a/projects/ucap-webmessenger-protocol-info/src/lib/types/user-info-update.type.ts b/projects/ucap-webmessenger-protocol-info/src/lib/types/user-info-update.type.ts
new file mode 100644
index 00000000..a2496524
--- /dev/null
+++ b/projects/ucap-webmessenger-protocol-info/src/lib/types/user-info-update.type.ts
@@ -0,0 +1,13 @@
+export enum UserInfoUpdateType {
+  // I: 프로필 이미지
+  Image = 'I',
+  // R: 인트로소개
+  Intro = 'R',
+  // T: 전화보이기여부
+  TelephoneVisible = 'T'
+}
+
+export enum TelephoneVisibleType {
+  Show = 'Y',
+  Hide = 'N'
+}
diff --git a/projects/ucap-webmessenger-protocol-info/src/public-api.ts b/projects/ucap-webmessenger-protocol-info/src/public-api.ts
index dbba1927..07f45e4c 100644
--- a/projects/ucap-webmessenger-protocol-info/src/public-api.ts
+++ b/projects/ucap-webmessenger-protocol-info/src/public-api.ts
@@ -2,6 +2,13 @@
  * Public API Surface of ucap-webmessenger-protocol-info
  */
 
+export * from './lib/models/status';
+export * from './lib/models/user-option';
+export * from './lib/models/user';
+
 export * from './lib/services/info-protocol.service';
 
+export * from './lib/types/service';
+export * from './lib/types/user-info-update.type';
+
 export * from './lib/ucap-info-protocol.module';