DocumentCode
1058877
Title
The Horizon® Communications System
Author
Gorman, Patrick H. ; Morse, Charles E.
Author_Institution
AT&T Information Systems, Holmdel, NJ
Volume
3
Issue
4
fYear
1985
fDate
7/1/1985 12:00:00 AM
Firstpage
497
Lastpage
507
Abstract
When the Horizon Communications System was introduced in 1977, it was one of the first processor-controlled hybrid Key TelephonePBX systems in the marketplace. It has evolved over time and been enhanced by adding both features and functions. This paper reviews Horizon´s design and discusses some of the goals and the rationale which guided the development. Other than station message detail recording (SMDR) and toll restriction, Horizon´s rich set of PBX features and their operation are not discussed. Rather, the technology employed, the system architecture, the relationship of the major component parts, the system software structure, and the maintenance and administration capabilities are explained.
Keywords
Business communication; Communication switching; Switching, communication; Communication cables; Computer architecture; Control systems; Costs; Disk recording; Helium; Light emitting diodes; System software; Telephony; Wiring;
fLanguage
English
Journal_Title
Selected Areas in Communications, IEEE Journal on
Publisher
ieee
ISSN
0733-8716
Type
jour
DOI
10.1109/JSAC.1985.1146240
Filename
1146240
Link To Document