Teleprocessing Overview
Presents an introduction to teleprocessing and communications systems.
| Definition of a teleprocessing system |
| One example of a teleprocessing system |
| The four components that must be present to have communications |
| Three performance principles of communications systems |
| Three fundamental functions of data communications |
| Four uses of data communications systems |
Hardware for Sending and Receiving
Discusses the types of terminals that can be used at sending or receiving ends of a data communications system. Covers the use of various network components.
| Features of dumb and intelligent terminals |
| Two types of general and special purpose terminals |
| The purpose and use within a data communications network for concentrators, multi-drop lines, multiplexers, switching devices and front end processors |
Software for Sending and Receiving
Discusses the three types of processing performed by the software at sending or receiving ends of a data communications system: control, conversion and editing.
| Explanation of this course's use of the categories communications interface and processing |
| Definition and examples of three processing functions |
| Nine steps required to effect a teleprocessing communication |
| Three types of control processing software |
| How control processing software fulfills Steps 1, 9, 6 and 7 |
| Three types of conversion processing software |
| How conversion processing software fulfills Steps 2, 3 and 8 |
| Two types of editing processing software |
| How edit processing software fulfills Steps 4 and 5 |
Transmission Channel
Discusses the four components of a transmission channel within a teleprocessing network: modems, lines, information flow and errors.
| The parts of the transmission channel |
| The purpose and features of modems |
| Five criteria to consider when selecting modems |
| The purpose of lines |
| Two components and three types of lines |
| The use of two types of communications switches |
| Four common combinations of lines and switches |
| The features of the three characteristics of information flow: direction, mode and phase |
| Attenuation, delay and phase types of distortion |
| Impulse, static, crosstalk and echo types of noise |
Message
Discusses the fourth and final component of a teleprocessing network.
| The data codes, data transmission structures and protocols that define the characteristics of the message component of a teleprocessing network |
| The features, advantages and disadvantages to three data coding systems: Baudot, EBCDIC and ASCII |
| Data error checking with parity bits, BCC and formulas |
| The features, advantages and disadvantages to: 1) serial and parallel transmission and 2) asynchronous and synchronous protocol |
| The purpose of protocols within a teleprocessing network |
| Four protocol levels |
Using the Information Network
Allows the student to practice using the services of typical informational network (INW).
| A practice session with a sample INW |
| Six variables used by INW's to charge for their services |
| Information on several time sharing services |
Teleprocessing Networks
Presents a brief discussion of some of the more significant happenings in the development of teleprocessing networks as we know them today.
| Milestones in the history of teleprocessing networks |
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