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This programme examines how the International Telephone System, which is dynamic, adaptive and rapidly changing, achieves its stability and reliability. The programme also examines how the British ...Telephone System fits into the larger International System, In a short discussion at the end of the programme Mr. Hodgson explains how the tremendous cost of establishing and maintaining the International System is brought about. The reliability of the system is discussed and the forward planning that is required in coping with the main problem of growth.
Metadata describing this Open University video programme
Module code and title: T241, Systems behaviour
Item code: T241; 09
First transmission date: 20-05-1973
Published: 1973
Rights Statement:
Restrictions on use:
Duration: 00:24:29
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Producer: Roger R Jones
Contributors: J Hodgson; Peter Zorkoczy
Publisher: BBC Open University
Keyword(s): Systems management; Telephone systems
Footage description: Shots of telephone operators of various countries working international manual switchboards. P. Zorkoczy introduces the programme. He gives a brief outline of the international telephone system. Simple diagram shows British and international telephone systems. The diagram splits each system into two sub-systems. Physical network. Human organisation network. Diagram shows two aspects of the international system's physical network: 1. Switching. 2. Transmission. and two aspects of the system's organisation network: 1. Problems solved 2. Problems to be solved. Zorkoczy lifts a telephone receiver and dials a call direct to New York to demonstrate the system in action. (He gets the New York weather report.) Zorkoczy with the aid of a diagram explains the dialing system which allows calls to be dialled direct to New York. Zorkoczy, with the aid of a map of the world, explains how calls are made to countries which have no direct links with the British telephone system. The Transit Switching network is one such system and Zorkoczy shows this on the map. Zorkoczy discusses the growth in demand for international telephone service. Histograph shows the increase in calls in and out of the U.K. for the years 1960-70 with projected demand to 1980. Zorkoczy discusses the role of international bodies such as CEPT, ITU, CCITT, etc. in planning and controlling the international telephone system. The 'World numbering plan', as an example of work done by international bodies, is discussed. Map of the world is used as an aid. Zorkoczy discusses some problems that arise when national telephone systems which evolved independently, are integrated into the international system. He shows various different arrangements for telephone dials as an example. Zorkoczy discusses the transmission links which are used in the international system cables, High Frequency radios, satellites, etc. He uses a map of the world as an aid. Zorkoczy and J. Hodgson discuss the ways in which expensive transmission links like ocean cables and satellites are financed. They also examine reasons for redundancy in transmission links over the same routes. Hodgson discusses future problems which may arise as a result of expansion of services.
Master spool number: 6HT/70787
Production number: FOUT0787
Videofinder number: 2718
Available to public: no