diff --git a/docs/overview/04-OMC Overview v1.1.pdf b/docs/overview/04-OMC Overview v1.1.pdf
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diff --git a/docs/overview/04-OMC Overview.md b/docs/overview/04-OMC Overview.md
index 2719338..09f8087 100644
--- a/docs/overview/04-OMC Overview.md	
+++ b/docs/overview/04-OMC Overview.md	
@@ -7,7 +7,7 @@ The Core Network OMC (Operation and Maintenance Center) is a central facility us
 
 ## System Architecture
 
-![ems-arch](image/ems-arch.jpg)
+![EMS Architecture](image/ems-arch.png)
 
 ## Platform
 
@@ -19,19 +19,23 @@ The Core Network OMC (Operation and Maintenance Center) is a central facility us
 
 ## Features
 
-1. Topology Management (State/Monitor): network topology, system status, etc.
+1. Topology Management (Dashboard/State/Monitor): Dashboard, Network topology, System status, etc.
 2. Fault Management (FM): active alarms, historical alarms, etc.
 3. Configuration Management (CM): NE (Network Element) management, parameter configuration, etc.
 4. Performance Management (PM): subscription tasks for performance-related metrics, data reports, performance thresholds, etc.
-5. Operation and Maintenance (MML): NE MML(Man Machine Language) operations, UDM (User Data Management) MML, OMC (Operation and Maintenance Center) MML, etc.
-6. Log Management (Log): operation logs, security logs, alarm logs, etc.
-7. Tracing Management (Trace): signaling tracking task creation, signaling analysis, signaling capture, etc.
-8. Security Management (Security): user management, role management, current online users, permission management, etc.
-9. System Management (System): menu management, dictionary management, system information, scheduling tasks, etc.
-10. Northbound Interface (NBI): optional and customized interfaces, northbound interface services, resource configuration data, performance statistics data, performance golden indicators, alarm reporting, 4A, etc.
+5. CDR/Event Managemet (CDR): IMS CDR, SMF CDR, AMF UE event.
+6. UE Management (UE): UDM Auth Data, UDM Subscriber, IMS Online Users, SMF UE Online Information, Radio Information, PCC Information, etc.
+7. Operation and Maintenance (MML): NE MML(Man Machine Language) operations, UDM (User Data Management) MML, OMC (Operation and Maintenance Center) MML, etc.
+8. Log Management (Log): operation logs, security logs, alarm logs, etc.
+9. Tracing Management (Trace): signaling tracking task creation, signaling analysis, signaling capture, etc.
+10. Security Management (Security): user management, role management, current online users, permission management, etc.
+11. System Management (System): menu management, dictionary management, system information, scheduling tasks, etc.
+12. Northbound Interface (NBI): optional and customized interfaces, northbound interface services, resource configuration data, performance statistics data, performance golden indicators, alarm reporting, 4A, etc.
+
+## Supported NEs
+
+AMF, AUSF, UDM, SMF, UPF, PCF, NRF, NSSF, NEF, LMF, IMS, MME, N3IWF, SMSC, MOCNGW
 
 ## Interfaces
 
 ![omc-interface](image/omc-interface.jpg)
-
- Please refer to <08-OMC HTTP Restful API Interfaces> for RESTful APIs details
diff --git a/docs/overview/04-OMC 系统简介 v1.1.pdf b/docs/overview/04-OMC 系统简介 v1.1.pdf
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index 332fcbe..f029a99 100644
--- a/docs/overview/04-OMC 系统简介.md	
+++ b/docs/overview/04-OMC 系统简介.md	
@@ -7,7 +7,7 @@ OMC架构与功能
 
 ## 系统架构
 
-![ems-arch](image/ems-arch.jpg)
+![ems architecture](image/ems-arch.png)
 
 ## 开发平台
 
@@ -19,13 +19,23 @@ OMC架构与功能
 
 ## 功能清单
 
-1. 拓扑管理(State/Monitor)：网络拓扑，系统状态等
+1. 拓扑管理(Dashboard/State/Monitor)：仪表盘，网络拓扑，系统状态等
 2. 故障管理(FM)：活动告警/历史告警等
 3. 配置管理(CM)：网元管理，参数配置等
 4. 性能管理(PM)：性能统计相关指标项的订阅任务，数据报表，性能门限等
-5. 操作维护(MML)：网元MML操作，UDM用户数据MML，OMC MML等
-6. 日志管理(Log)：操作日志，安全日志，告警日志等
-7. 跟踪管理(Trace)：信令跟踪任务创建，信令分析，信令抓包等
-8. 安全管理(Security)：用户管理，角色管理，当前在线用户，权限管理等
-9. 系统管理(System): 菜单管理，字典管理，系统信息，调度任务等
-10. 北向接口(NBI: Northbound Interface): 可选接口，定制化接口，北向接口服务，资源配置数据，性能统计数据, 性能黄金指标, 告警上报, 4A等
+5. CDR管理(CDR): IMS话单，SMF话单，AMF UE事件等
+6. 终端管理(UE): UDM鉴权数据，UDM签约用户，IMS在线用户，SMF UE在线信息，基站信息，用户策略控制信息等
+7. 操作维护(MML)：网元MML操作，UDM用户数据MML，OMC MML等
+8. 日志管理(Log)：操作日志，安全日志，告警日志等
+9. 跟踪管理(Trace)：信令跟踪任务创建，信令分析，信令抓包等
+10. 安全管理(Security)：用户管理，角色管理，当前在线用户，权限管理等
+11. 系统管理(System): 菜单管理，字典管理，系统信息，调度任务等
+12. 北向接口(NBI: Northbound Interface): 可选接口，定制化接口，北向接口服务，资源配置数据，性能统计数据, 性能黄金指标, 告警上报, 4A等
+
+## 支持的NEs
+
+AMF, AUSF, UDM, SMF, UPF, PCF, NRF, NSSF, NEF, LMF, IMS, MME, N3IWF, SMSC, MOCNGW
+
+## 接口
+
+![omc-interface](image/omc-interface.jpg)
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