ES8302981A1 - Supplementary exchange for telephonic installation - uses CPU with memory to evaluate comparator output for automatic control and selection of day or night stations - Google Patents
Supplementary exchange for telephonic installation - uses CPU with memory to evaluate comparator output for automatic control and selection of day or night stationsInfo
- Publication number
- ES8302981A1 ES8302981A1 ES508089A ES508089A ES8302981A1 ES 8302981 A1 ES8302981 A1 ES 8302981A1 ES 508089 A ES508089 A ES 508089A ES 508089 A ES508089 A ES 508089A ES 8302981 A1 ES8302981 A1 ES 8302981A1
- Authority
- ES
- Spain
- Prior art keywords
- memory
- night
- stations
- day
- sets
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Exchange Systems With Centralized Control (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
Data transmission lines for different groups of subscribers are connected through connecting sets to a central control unit. These lines permit exchange of data between the different equipments and the partial controllers for the subscriber circuits, the office sets and the selector memory sets. Other controllers provide control for the exchange telephonic equipment with the connection sets and for the tone generators. A comparator and program controller with memory enables the type of function to be selected from the evaluation of selected signals and special supplementary signals. This permits automatic connection of day or night stations and the selection of another station if these connections cannot be established.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803047831 DE3047831A1 (en) | 1980-12-18 | 1980-12-18 | CIRCUIT ARRANGEMENT FOR A TELEPHONE SYSTEM, IN PARTICULAR TELEPHONE EXTENSION SYSTEM, WITH TARGETABLE CONTROLLED INTERFACE |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8302981A1 true ES8302981A1 (en) | 1982-12-01 |
ES508089A0 ES508089A0 (en) | 1982-12-01 |
Family
ID=6119566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES508089A Granted ES508089A0 (en) | 1980-12-18 | 1981-12-17 | IMPROVEMENTS IN THE CIRCUIT OF A TELEPHONE FACILITY, IN PARTICULAR IN A SUPPLEMENTARY TELEPHONE FACILITY, WITH PLANNELY CONTROLLABLE OPERATOR POSTS. |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE891506A (en) |
DE (1) | DE3047831A1 (en) |
ES (1) | ES508089A0 (en) |
FR (1) | FR2497042A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4602128A (en) * | 1984-11-29 | 1986-07-22 | At&T Information Systems Inc. | Automatic redialing arrangement for multi-line telephone station sets |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2057206B2 (en) * | 1970-11-20 | 1972-02-03 | Siemens Ag | CIRCUIT ARRANGEMENT FOR A TELEPHONE SYSTEM, IN PARTICULAR TELEPHONE EXTENSION SYSTEM WITH CALL DISTRIBUTION AND RECALL CALLS AT THE SITE |
FR2274179A1 (en) * | 1974-06-04 | 1976-01-02 | Cit Alcatel | CONNECTION NETWORK OF OPERATORS IN A TELECOMMUNICATIONS CENTRAL |
DE2534110C2 (en) * | 1975-07-30 | 1983-04-07 | Siemens AG, 1000 Berlin und 8000 München | Procedure for the call distribution of calls waiting for switchboards in a switching system that have become free |
-
1980
- 1980-12-18 DE DE19803047831 patent/DE3047831A1/en not_active Ceased
-
1981
- 1981-12-17 ES ES508089A patent/ES508089A0/en active Granted
- 1981-12-17 FR FR8123606A patent/FR2497042A1/en active Pending
- 1981-12-17 BE BE0/206854A patent/BE891506A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FR2497042A1 (en) | 1982-06-25 |
DE3047831A1 (en) | 1982-07-15 |
BE891506A (en) | 1982-04-16 |
ES508089A0 (en) | 1982-12-01 |
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