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Practical_modern_SCADA_protocols_-_dnp3,_60870-5_and_Related_Systems

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Appendix A: Glossary 413<br />

X.25 CCITT st<strong>and</strong>ard governing interface between DTE <strong>and</strong> DCE<br />

device forterminals operating in the packet mode on public<br />

data networks.<br />

X.25 PAD A device that permits communication between non-X.25<br />

devices <strong>and</strong> the devices in an X.25 network.<br />

X.3/X.28/X.29<br />

A set of internationally agreed st<strong>and</strong>ard <strong>protocols</strong> defined to<br />

allow a character oriented device, such as a visual display<br />

terminal, to be connected to a packet switched data network.

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