AT282694B - Circuit arrangement for telephone private branch exchanges - Google Patents
Circuit arrangement for telephone private branch exchangesInfo
- Publication number
- AT282694B AT282694B AT95568A AT95568A AT282694B AT 282694 B AT282694 B AT 282694B AT 95568 A AT95568 A AT 95568A AT 95568 A AT95568 A AT 95568A AT 282694 B AT282694 B AT 282694B
- Authority
- AT
- Austria
- Prior art keywords
- circuit arrangement
- private branch
- branch exchanges
- telephone private
- telephone
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
- H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
- H04Q3/625—Arrangements in the private branch exchange
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET0033349 | 1967-03-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT282694B true AT282694B (en) | 1970-07-10 |
Family
ID=7557698
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT10469A AT287075B (en) | 1967-03-04 | 1968-01-31 | CIRCUIT ARRANGEMENT FOR TELEPHONE EXTENSION SYSTEMS WITH SIGNAL LAMPS |
AT95568A AT282694B (en) | 1967-03-04 | 1968-01-31 | Circuit arrangement for telephone private branch exchanges |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT10469A AT287075B (en) | 1967-03-04 | 1968-01-31 | CIRCUIT ARRANGEMENT FOR TELEPHONE EXTENSION SYSTEMS WITH SIGNAL LAMPS |
Country Status (4)
Country | Link |
---|---|
AT (2) | AT287075B (en) |
DE (1) | DE1512094B2 (en) |
FR (1) | FR1559905A (en) |
NL (1) | NL6802489A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3991282A (en) * | 1974-12-27 | 1976-11-09 | Feil Thomas E | Multi station telephone switching system |
-
1967
- 1967-03-04 DE DE19671512094 patent/DE1512094B2/en active Pending
-
1968
- 1968-01-31 AT AT10469A patent/AT287075B/en active
- 1968-01-31 AT AT95568A patent/AT282694B/en not_active IP Right Cessation
- 1968-02-21 NL NL6802489A patent/NL6802489A/xx unknown
- 1968-03-04 FR FR1559905D patent/FR1559905A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1512094A1 (en) | 1969-03-13 |
NL6802489A (en) | 1968-09-05 |
FR1559905A (en) | 1969-03-14 |
DE1512094B2 (en) | 1970-02-26 |
AT287075B (en) | 1971-01-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH496383A (en) | Automatic telecommunication switching system | |
BR6803645D0 (en) | ELECTRIC CIRCUITS | |
FR1535496A (en) | Improvements to automatic telephone exchanges | |
AT282694B (en) | Circuit arrangement for telephone private branch exchanges | |
AT282703B (en) | Switching arrangement for telecommunication systems | |
CH477789A (en) | Coupling arrangement for telecommunications switching systems | |
AT302444B (en) | Branch terminal | |
CH460874A (en) | Conference facility for private branch exchanges | |
AT278107B (en) | Circuit arrangement for a call forwarding device in telecommunications systems | |
DE1665982B2 (en) | LOET-FREE CONNECTION TERMINAL | |
AT268387B (en) | Telephone exchange | |
BR6804172D0 (en) | TELECOMMUNICATION EQUIPMENT | |
CH402963A (en) | Circuit arrangement for telephone private branch exchanges | |
FR1389919A (en) | Improvements to private telephone exchanges | |
AT285687B (en) | Local telephone system | |
AT278136B (en) | Telecommunication switching group | |
AT284915B (en) | Circuit arrangement for telephone branch exchanges with exchanges connected to one another via cross-connecting lines | |
FI43608C (en) | Analyzer for automatic telephone exchanges | |
FI43748C (en) | Analyzer for automatic telephone exchanges | |
AT293493B (en) | Hook switch for telephones | |
CH492373A (en) | Automatic telephone exchange | |
CA773186A (en) | Busy verification circuit for private branch exchanges | |
AT252327B (en) | Subscriber circuit for the connection of telephone private branch exchanges | |
AT287070B (en) | Circuit arrangement for a dial recording device for telecommunications, in particular telephone private branch exchanges | |
CH480767A (en) | Automatic telecommunications switching network |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |