X25 data service
These three Legacy courses cover technical aspects of data services that were originally widely used but have now been largely superseded by newer technologies.
X25 data service
Frame Relay
ATM networks
X25 data service course
This course discusses the protocols and techniques used in an X25 data service. Typical X25 service offerings are also described.
Prerequisite:
An understanding of the basic principles of packet switching. It is recommended that one of the following e-learning courses is studied before attempting the X25 course: TransNet course A - "Principles of WANs" or StarTel course A - "Telecoms fundamentals".
Summary of topics covered:
Introduction to X25 networks, protocols and services.
X25 equipment: DCEs, DTEs, switches and PADS.
X25 virtual circuits and the significance of the Logical Channel Number (LCN).
Functions of the fields in PLP packets and LAPB frames.
X25 error correction and flow control techniques.
Number of chapters: 3 Study time: 3 hours
French and Dutch versions of "X25 data service" course available more >>
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