George J. Lissandrello
ABSTRACT
Developments of national and international communication served Data Processing Systems is dependent upon not only the availability of facilities, but on the economics involved. The paper shows in graphic form the differences in the tariff structures in the countries and also a comparison of break-even costs when it is economically justified to lease telegraph or telephone lines versus utilizing the telex or the telephone switched facility.
There will also be a comparison of available facilities by country, leased point-to-point, leased multipoint, switched telephone and telex. Included in this paper will be a comparison of attachment policies and a summary status of the remote computing services.
Index Terms
- World data communications as seen by the Data Processing Systems designer
Recommendations
Data communications
Encyclopedia of Computer ScienceData communications is the most rapidly expanding communication area, with Public Switched Telephone Network (PSTN) market penetration approaching saturation levels, at least for wired networks. This article discusses the principles of data ...
Dynamical Detection on Urban Sprawl Based on EO Data
IFITA '09: Proceedings of the 2009 International Forum on Information Technology and Applications - Volume 03With the development of society and economy, the rapid urban sprawl in land use is being witnessed of late in urban districts. As a result, many problems in society and environment have appeared in urban districts, such as population expansion, air ...
Integrated voice and data communications overview
The author reviews architectures and traffic characteristics for voice and data communications, and addresses important issues in integrated voice and data communications. He discusses some possible methods of integrating voice and data and presents an ...
Comments