Power over Ethernet Architecture Analysis for Industrial Routers and IoT Devices — Wavetel IoT Technical White Paper — Table of Contents PoE Technology Overview: Why Industrial Sites Increasingly Depend on PoE What is PD / PoE IN (Powered Device) 2.1 Concept Explanation 2.2 Common PD Devices 2.3 Value of Industrial Routers as PD What is PSE / PoE OUT (Power Sourcing Equipment) 3.1 Concept Explanation 3.2 Common PSE Devices 3.3 Significance of Industrial Router PoE OUT Support

Table of Contents Introduction: Why China Has Become a Major Source for Industrial Routers Understanding Industrial Routers in IoT & M2M Applications 2.1 The Role of Industrial Routers in IoT / M2M System Architecture 2.2 The Essential Differences Between Industrial-Grade and Consumer-Grade Routers 2.3 Typical IoT and M2M Application Scenarios for Industrial Routers Key Evaluation Criteria for Selecting a Chinese Industrial Router Manufacturer 3.1 Industrial-Grade Hardware De

------From Technical Background and Evolution to Industrial-Grade Configuration Practice and Future Outlook Table of Contents Introduction: Why Do Industrial Routers Need DDNS? DDNS Technical Background and Reasons for Its Emergence 2.1 Dynamic IP is the Norm in Industrial Cellular Networks 2.2 Limitations of Traditional DNS in Industrial Environments 2.3 Core Solution Approach of DDNS Development History of DDNS Technology How DDNS Works in Industrial Routers (In-depth Analy

Table of Contents Introduction: Why We Must Re-examine M2M and IoT Today Concepts and Definitions: What is M2M? What is IoT? 2.1 What is M2M (Machine-to-Machine)? 2.2 What is IoT (Internet of Things)? 2.3 A One-Sentence Summary of Their Differences Historical Evolution: Technological Era Shift from M2M to IoT Technical Architecture Comparison: Point-to-Point vs. Cloud-Centric 4.1 M2M Architecture: Point-to-Point (P2P) System 4.2 IoT Architecture: Cloud-Centric Collaborative S

Table of Contents Introduction: Why OPC UA Became the "Standard Language" of the Industrial Internet Era Background and Development History of OPC UA 2.1 The Birth of OPC Classic 2.2 The Proposal and Vision of OPC UA 2.3 International Standardization and Ecosystem Development Overall Architecture of OPC UA 3.1 Future-Oriented Cross-Platform Architecture 3.2 Communication Stack Structure 3.3 Information Model and Data Organization Core Technical Features of OPC UA 4.1 Security

Table of Contents What is the MQTT Protocol? 1.1 MQTT's Design Philosophy & Key Features 1.2 Why is MQTT Indispensable in IoT/IIoT? Basic Principles and Workflow of MQTT 2.1 Publish/Subscribe Pattern: Evolution from IBM MQ Series 2.2 Detailed Explanation of MQTT Packet Structure 2.3 MQTT 3.1, 3.1.1, 5.0: Version Differences & Migration Guide 2.4 MQTT Application Scenarios in IoT (Modbus/MQTT/OPC UA Integration Explained) Detailed Understanding of MQTT Protocol Architecture 3.