Communications: electrical – Digital comparator systems
Patent
1976-04-08
1977-06-07
Yusko, Donald J.
Communications: electrical
Digital comparator systems
179 18J, 1791752C, H04Q 900, H01M 300
Patent
active
040286762
ABSTRACT:
Methods and apparatus are disclosed for controlling peripheral units in a telecommunication system by means of two or more like control apparatus, wherein the peripheral units are assembled in groups, each of which is associated with its own switching means for selectively connecting the particular group to a control apparatus. The control of all peripheral units to be controlled at a given time is effected with only one of said like control apparatus at that time. Each active control apparatus is caused to time itself for a first predetermined time as to the duration of its control of said peripheral units, and to initiate a timing cycle in another one of said control apparatus for a second predetermined time longer than said first predetermined time. The control apparatus are periodically exchanged in their control function in response to the mentioned self-timing. In response to a malfunction during the performance of the control function by a particular control apparatus, the other control apparatus in which the mentioned timing cycle has then been initiated, is caused to take over the control of said peripheral units from the particular control apparatus.
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"Massnahmen zur Sicherstellung der Zuverlassigkeit im Fernsprech-Vermittlungssystem HE-60 L" (Preventive Measures for Assuring the Reliability of the Telephone Exchange System Type HE-60 L, by H. Willrett, in SEL-Nachrichten (SEL News), vol. 11, issue No. 3 (1963) pp. 145-149.
"Programmgesteuerte elektronische Fernsprechvermittlungssysteme ESS Nr. 1 und ESS Nr. 100" (Program Controlled Electronic Long-Distance Telephone Exchange Systems Types ESS Nr. 1; ESS Nr. 100), by Woite, in NTZ 1966, Issue No. 2 pp. 122-124.
Siemens-Albis Aktiengesellschaft
Yusko Donald J.
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