Characteristics of Class 0

The characteristic of this class is that it provides the simplest type of transport connection and fully compatible with the CCITT recommendations S.70 for Teletex terminals.

The class is designed for use in association with network connections of type A.

Functions of Class 0

This class is designed to have minimum functionality. It provides only the functions needed for connection establishment with negotiation, data transfer with segmenting and protocol error reporting.

Class 0 provides transport connections with flow control based on the network service provided flow control, and disconnection based on the network service disconnection.

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