Abstract
The modem, which is a contraction of the words modulator-demodulator, is the device that performs the functions of transmitting and receiving the data signals over the communications channel. Modems are used on analog circuits. Occasionally the literature will refer to “digital modems” as loosely describing either the transmission of digital data over analog circuits or the transmission of digital data over digital communication links. In the latter case, the transmitter-receiver is more descriptively referred to as a channel service unit or digital service unit. In other words, modems are not used on digital systems.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
McNamara, J. E., Technical Aspects of Data Communication, Digital Equipment Corp., Maynard, Massachusetts (1977), Chapters 5 and 9.
ELA Standard RS-232-C, Interface between data terminal equipment and data communication equipment employing binary serial data interchange, Engineering Department, Electronic Industries Association, Washington, D.C. (August 1969).
Application Notes for EIA-Standards RS-232-C, Engineering Department, Electronic Industries Association, Washington, D.C. (May 1971).
Holts, H. C., and Cotton, I. W., Interfaces: new standards catch up with technology, Data Communications, Volume 6.
Vilips, V. V., Data Modem Selection and Evaluation Guide, Artech House, Dedham, Massachusetts (1972).
Doll, D. R., Data Communications, John Wiley and Sons, New York (1978), pp. 244–252.
Davey, J. R., Modems, Proc. IEEE Volume 60 (11) (November 1972), pp. 1284–1292.
Bryant, P., Giesin, F. W., and Hayes, R. M., Experiments in line quality monitoring, IBM Systems Journal 15 (2) (1978), pp. 124–142.
Foschini, G. J., Gitlin, R. D., and Weinstein, S. B., On the selection of a two-dimensional signal constellation in the presence of phase jitter and gaussian noise, Bell System Technical Journal 52(6) (July-August 1973 ), pp. 927–965.
Puchkoff, S. J., A modem eye-pattern looks at telephone lines, Telecommunications 6 (8) (August 1972).
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 1980 Plenum Press, New York
About this chapter
Cite this chapter
Techo, R. (1980). Modem Equipment. In: Data Communications. Applications of Modern Technology in Business. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-9158-0_10
Download citation
DOI: https://doi.org/10.1007/978-1-4615-9158-0_10
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4615-9160-3
Online ISBN: 978-1-4615-9158-0
eBook Packages: Springer Book Archive