ES282817A1 - Improvements in automatic telephone switching systems (Machine-translation by Google Translate, not legally binding) - Google Patents
Improvements in automatic telephone switching systems (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES282817A1 ES282817A1 ES282817A ES282817A ES282817A1 ES 282817 A1 ES282817 A1 ES 282817A1 ES 282817 A ES282817 A ES 282817A ES 282817 A ES282817 A ES 282817A ES 282817 A1 ES282817 A1 ES 282817A1
- Authority
- ES
- Spain
- Prior art keywords
- switching steps
- translation
- retention
- machine
- legally binding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
- H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Exchange Systems With Centralized Control (AREA)
Abstract
Improvements in automatic telephone switching systems for extending connections between calling lines and calls through a number of switching steps interconnected by link means, each of said switching steps comprising two-wire transmission circuits, control means that drive in response to directing signals from any of said calling lines to dial said calling line and any called line, means for driving said switching steps to complete a connection on said two-wire transmission circuit from said calling line to said called line, retention means in said switching steps to maintain said established connection, independently of the retention control and release means responding to the termination of said connection to control said retention means on said two-wire retention circuit to release said switching steps tation. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR880491A FR81352E (en) | 1961-04-25 | 1961-11-30 | Selection system for circuits or electrical equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
ES282817A1 true ES282817A1 (en) | 1963-02-01 |
Family
ID=8767740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES282817A Expired ES282817A1 (en) | 1961-11-30 | 1962-11-26 | Improvements in automatic telephone switching systems (Machine-translation by Google Translate, not legally binding) |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH462255A (en) |
ES (1) | ES282817A1 (en) |
NL (1) | NL142857B (en) |
-
1962
- 1962-11-23 CH CH1375462A patent/CH462255A/en unknown
- 1962-11-26 ES ES282817A patent/ES282817A1/en not_active Expired
- 1962-11-30 NL NL286208A patent/NL142857B/en unknown
Also Published As
Publication number | Publication date |
---|---|
CH462255A (en) | 1968-09-15 |
NL142857B (en) | 1974-07-15 |
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