Crestron e-Control Spécifications télécharger pdf (Page 60)

Software Crestron e-Control

Layer 3: Transport - Corresponding to the OSI Transport layer, this is the part of the

protocol stack where the Transport Control Protocol (TCP) and User Datagram

Protocol (UDP) implemented by e-Control can be found. TCP works by asking another

device on the network if it is willing to accept information from the local device.

Layer 4: Application - Layer 4 combines the Session, Presentation and Application

layers of the OSI model. Protocols for specific functions such as email (Simple Mail

Transfer Protocol, SMTP) and file transfer (File Transfer Protocol, FTP) reside at

this level.

OSI illustration copyrighted by and reused with permission of whatis.com

(http://www.whatis.com

) and TechTarget, Inc.

56 • Crestron e-Control® Reference Guide – DOC. 6052

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Crestron e-Control Spécifications Page 60