Seminar
"ITU-T X.25" (duration: 1 day)
In this seminar you get
technical special information about the protocol functions of ITU-T
Recommendation X.25, as it is still in use for interactive terminal communication over
packet switching networks, POS terminals, Automated Teller Machines (ATM) or
very secure international communication.
WHY you should attend:
- Because you are using X.25 and you need to
know details about the protocol
- Because you want to know the differences
between X.25 and the Internet Protocol (IP)
- Because you want to analyze X.25
traces
Your PREVIOUS KNOWLEDGE:
- Basics in data communication technology are
recommended
CONTENT of the Seminar
Packet Switching
Concepts and Terms
Open Systems - Interfaces - Protocols - Switching Technologies - Advantages of
Switching Systems - Packet Switching Networks - Characteristics - Network
Elements in Packet Switching Networks
Concept of
Recommendation ITU-T X.25
Physical Layer: ITU-T X.21, X.21bis:
Mechanical Interface: Connector Design, Pins
Electrical Interface (Signal Technology): Levels, Signals
Functional Interface (Logic): Leased Line Operation, Dial-Up Operation, Line
Functions
Data Link Layer (HDLC LAPB):
Methods of Operation, Frame Types, Structure and Application, Error Detection
and Correction, Traces
Packet / Network Layer of X.25:
Methods of Operation, Packet Types, Structure, Traces, typical Features,
Differences to Internet Protocol (IP)
Gateway to ISDN (according ITU-T X.31):
using ISDN D Channel, using ISDN B Channel
Packet Assembler /
Disassembler
PADs for X.25 (acc. ITU-T Rec. X.3, X.28 and X.29) - Internal Functions of a PAD -
Important PAD Parameters
Application Examples
for X.25 Services
Examples explain the typical applications of X.25.
Conclusion
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