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 networkFour 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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