Schneider Electric XPSMF2DO801 manual OSI model

Equipment Description

OSI model	The model divides the functions of a protocol into a series of layers known as a
	’protocol stack’ (e.g., TCP/IP stack). Lower layers are implemented in hardware,
	while higher layers are used in software. Each of the layers is a transport platform
	for the next higher level and relies on the next lower level .
	The following image is a graphic representation of the OSI layers:

	Data
	Data
	Data
Layers	Data
Host	Segments
	Packets
Layers	Frames
Media	Bits

Layer

Application

Network Process to Application

Presentation

Data Representation and Encryption

Session

Interhost Communication

Transport

End-to-End Connections and Reliability

Network

Path Determination and IP

Data Link

MAC and LLC

Physical

Media, Signal, and Binary Transmission

54 33003405 07/2007