BE753695A - Systeme telephonique a clavier - Google Patents
Systeme telephonique a clavierInfo
- Publication number
- BE753695A BE753695A BE753695DA BE753695A BE 753695 A BE753695 A BE 753695A BE 753695D A BE753695D A BE 753695DA BE 753695 A BE753695 A BE 753695A
- Authority
- BE
- Belgium
- Prior art keywords
- telephone system
- keypad telephone
- keypad
- telephone
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
- H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line
- H04M9/007—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line wherein the key telephone sets are star-connected to a central unit by a limited number of lines
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US84491369A | 1969-07-25 | 1969-07-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE753695A true BE753695A (fr) | 1970-12-31 |
Family
ID=25293952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE753695D BE753695A (fr) | 1969-07-25 | 1970-07-20 | Systeme telephonique a clavier |
Country Status (7)
Country | Link |
---|---|
US (1) | US3604857A (de) |
BE (1) | BE753695A (de) |
DE (1) | DE2036815C3 (de) |
FR (1) | FR2055523A5 (de) |
GB (1) | GB1317984A (de) |
NL (1) | NL170215C (de) |
SE (1) | SE370603B (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3701854A (en) * | 1970-12-21 | 1972-10-31 | Bell Telephone Labor Inc | Key telephone system call signaling and station set data transfer arrangement |
CA923644A (en) * | 1971-06-16 | 1973-03-27 | Ebrahimi Jalal | Line circuit for key telephone system |
CA1018270A (en) * | 1972-05-23 | 1977-09-27 | Federico R. Laliccia | Key telephone system using time division and space division control |
GB1400237A (en) * | 1972-11-10 | 1975-07-16 | Gte International Inc | Automatic telephone exchange system |
GB1437031A (en) * | 1973-04-04 | 1976-05-26 | Plessey Co Ltd | House exchange telephone system |
US3920902A (en) * | 1973-04-05 | 1975-11-18 | Nitsuko Ltd | Off-premises station line circuit for a key telephone system |
US4027110A (en) * | 1973-12-05 | 1977-05-31 | Iwasaki Tsushinki Kabushiki Kaisha | Key telephone system |
USRE29078E (en) * | 1974-03-29 | 1976-12-14 | Bell Telephone Laboratories, Incorporated | Key telephone system |
US3920928A (en) * | 1974-03-29 | 1975-11-18 | Bell Telephone Labor Inc | Line control circuit |
US3920929A (en) * | 1974-03-29 | 1975-11-18 | Bell Telephone Labor Inc | Key telephone system |
US3973085A (en) * | 1974-09-26 | 1976-08-03 | The Anaconda Company | Key telephone system with directly associated station cards and sets |
US4028498A (en) * | 1974-10-07 | 1977-06-07 | Solid State Systems, Inc. | Private automatic branch exchange system and apparatus |
US4061887A (en) * | 1976-04-23 | 1977-12-06 | Rolm Corporation | Key telephone adapter for electronic telephone switching system |
US4184054A (en) * | 1977-03-28 | 1980-01-15 | Tokyo Shibaura Electric Co., Ltd. | Key telephone system |
US4286118A (en) * | 1979-07-02 | 1981-08-25 | Solid State Systems, Inc. | Data distribution system for private automatic branch exchange |
JPS6022868B2 (ja) * | 1979-07-03 | 1985-06-04 | 株式会社田村電機製作所 | ボタン電話交換システム |
US4381427A (en) * | 1981-06-16 | 1983-04-26 | Northern Telecom Limited | Subscriber loop system for voice and data |
US7844020B2 (en) * | 2007-06-08 | 2010-11-30 | Advantest Corporation | Transmission system, transmitter, receiver, and transmission method |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3385935A (en) * | 1964-10-19 | 1968-05-28 | Bell Telephone Labor Inc | Key telephone system |
US3420961A (en) * | 1965-06-01 | 1969-01-07 | Bell Telephone Labor Inc | Time division key telephone system |
-
1969
- 1969-07-25 US US844913A patent/US3604857A/en not_active Expired - Lifetime
-
1970
- 1970-07-16 SE SE7009863A patent/SE370603B/xx unknown
- 1970-07-20 BE BE753695D patent/BE753695A/xx unknown
- 1970-07-23 FR FR7027203A patent/FR2055523A5/fr not_active Expired
- 1970-07-24 DE DE2036815A patent/DE2036815C3/de not_active Expired
- 1970-07-24 GB GB3588770A patent/GB1317984A/en not_active Expired
- 1970-07-24 NL NLAANVRAGE7010988,A patent/NL170215C/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE2036815B2 (de) | 1979-04-05 |
DE2036815A1 (de) | 1971-02-04 |
NL170215C (nl) | 1982-10-01 |
DE2036815C3 (de) | 1979-11-15 |
SE370603B (de) | 1974-10-21 |
FR2055523A5 (de) | 1971-05-07 |
NL7010988A (de) | 1971-01-27 |
US3604857A (en) | 1971-09-14 |
GB1317984A (en) | 1973-05-23 |
NL170215B (nl) | 1982-05-03 |
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