Communications

Communication Networks OSI Model

The Open Systems Interconnection model (OSI model) is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system without regard to their underlying internal structure and technology. Its goal is the interoperability of diverse communication systems with standard protocols. The model partitions a communication system into abstraction layers. The original version of the model defined seven layers. Wikipedia

Communications

Basics of IoT Communication from Architecting the Internet of Things by Microsoft @ TechEd North America

Use Cases

• Telemetry: Information flowing from a device to other systems for conveying status of device and environment

• Inquiries: Requests from devices looking to gather required information or to initiate activities, I Am Ok!

• Commands: Command from other systems to a device or a group of devices to perform specific activities

• Notifications: Information flowing from other systems to a device (group) for conveying status changes