FR654067A - Improvements to automatic or semi-automatic telephone systems - Google Patents
Improvements to automatic or semi-automatic telephone systemsInfo
- Publication number
- FR654067A FR654067A FR654067DA FR654067A FR 654067 A FR654067 A FR 654067A FR 654067D A FR654067D A FR 654067DA FR 654067 A FR654067 A FR 654067A
- Authority
- FR
- France
- Prior art keywords
- automatic
- semi
- telephone systems
- automatic telephone
- systems
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/08—Indicating faults in circuits or apparatus
- H04M3/14—Signalling existence of persistent "off-hook" condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
- H04M3/51—Centralised call answering arrangements requiring operator intervention, e.g. call or contact centers for telemarketing
- H04M3/523—Centralised call answering arrangements requiring operator intervention, e.g. call or contact centers for telemarketing with call distribution or queueing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
- Marketing (AREA)
- Exchange Systems With Centralized Control (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Small-Scale Networks (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB12572/27A GB295421A (en) | 1927-05-10 | 1927-05-10 | Improvements in telephone systems |
Publications (1)
Publication Number | Publication Date |
---|---|
FR654067A true FR654067A (en) | 1929-04-02 |
Family
ID=10007115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR654067D Expired FR654067A (en) | 1927-05-10 | 1928-05-10 | Improvements to automatic or semi-automatic telephone systems |
Country Status (3)
Country | Link |
---|---|
US (1) | US1757446A (en) |
FR (1) | FR654067A (en) |
GB (3) | GB295449A (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2620401A (en) * | 1945-04-04 | 1952-12-02 | Vigren Sten Daniel | Automatic telephone system |
US2628282A (en) * | 1946-02-23 | 1953-02-10 | Automatic Elect Lab | Telephone system |
FR933606A (en) * | 1946-08-27 | 1948-04-27 | Constr Telephoniques | Improvements to automatic telephone systems |
US2605362A (en) * | 1948-07-07 | 1952-07-29 | Stromberg Carlson Co | Telephone party line intercept circuit |
BE493889A (en) * | 1949-02-14 | |||
BE500637A (en) * | 1950-01-16 | |||
US2740836A (en) * | 1951-01-11 | 1956-04-03 | Automatic Elect Lab | Toll ticketing telephone systems |
DE972071C (en) * | 1952-03-01 | 1959-05-21 | Standard Elek K Lorenz Ag | Circuit arrangement for central markers in telecommunications systems |
-
1927
- 1927-05-10 GB GB4313/28A patent/GB295449A/en not_active Expired
- 1927-05-10 GB GB12572/27A patent/GB295421A/en not_active Expired
- 1927-05-10 GB GB4314/28A patent/GB295450A/en not_active Expired
-
1928
- 1928-05-10 FR FR654067D patent/FR654067A/en not_active Expired
- 1928-05-10 US US276734A patent/US1757446A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US1757446A (en) | 1930-05-06 |
GB295449A (en) | 1928-08-10 |
GB295421A (en) | 1928-08-10 |
GB295450A (en) | 1928-08-10 |
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