The OSI (Open Systems Interconnection) model facilitates network communication by providing a standardized framework that divides network communication into seven distinct layers. Each layer has specific functions and protocols that contribute to the overall process of transmitting data between devices.

1. Physical Layer: Handles the physical connection between devices, including the transmission and reception of raw binary data over a medium (cables, radio waves).
2. Data Link Layer: Manages error detection and correction from the Physical Layer, and ensures reliable data transfer by framing and controlling access to the physical medium.
3. Network Layer: Determines the best physical path for data transmission, handling packet forwarding, routing, and addressing through logical addressing (IP addresses).
4. Transport Layer: Provides end-to-end communication control, ensuring complete data transfer with error checking and flow control mechanisms (TCP/UDP).
5. Session Layer: Manages sessions or connections between applications, handling the establishment, maintenance, and termination of communication sessions.
6. Presentation Layer: Translates data between the application layer and the network, ensuring data is in a usable format, handling encryption, compression, and translation.
7. Application Layer: Interfaces directly with user applications, providing network services to end-users and facilitating functions like email, file transfer, and web browsing.

By segmenting communication into these layers, the OSI model standardizes network functions, promoting interoperability and simplifying troubleshooting and development.