IE45958L - Telecommunications apparatus - Google Patents
Telecommunications apparatusInfo
- Publication number
- IE45958L IE45958L IE772646A IE264677A IE45958L IE 45958 L IE45958 L IE 45958L IE 772646 A IE772646 A IE 772646A IE 264677 A IE264677 A IE 264677A IE 45958 L IE45958 L IE 45958L
- Authority
- IE
- Ireland
- Prior art keywords
- subscribers
- side terminal
- exchange
- transmission
- controlled
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/02—Selecting arrangements for multiplex systems for frequency-division multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
- Mobile Radio Communication Systems (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
This data transmission device serves to connect a plurality of subscribers (T1 ... Tp) to a central exchange, the number of channels of the transmission device being lower than the number of subscribers. The transmission is carried out via a frequency division multiplexing device (16, 17, 18; 26, 27, 28) and, with the aid of a central control device (14), a switching device (13) connected to the exchange-side terminal is controlled directly and at least one allocation device (23) for connection set-up which is connected to a subscriber-side terminal is controlled by means of a telecontrol device (15, 25). <IMAGE>
[GB1598917A]
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2659664A DE2659664C2 (en) | 1976-12-30 | 1976-12-30 | Message transmission arrangement for connecting several participants to a central exchange |
Publications (2)
Publication Number | Publication Date |
---|---|
IE45958L true IE45958L (en) | 1978-06-30 |
IE45958B1 IE45958B1 (en) | 1983-01-12 |
Family
ID=5997094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE2646/77A IE45958B1 (en) | 1976-12-30 | 1977-12-29 | Telecommunications transmission apparatus |
Country Status (16)
Country | Link |
---|---|
JP (1) | JPS5384607A (en) |
AR (1) | AR212060A1 (en) |
AU (1) | AU516846B2 (en) |
BE (1) | BE862549A (en) |
BR (1) | BR7708766A (en) |
CH (1) | CH625927A5 (en) |
DE (1) | DE2659664C2 (en) |
DK (1) | DK585777A (en) |
FR (1) | FR2376584A1 (en) |
GB (1) | GB1598917A (en) |
IE (1) | IE45958B1 (en) |
IT (1) | IT1089195B (en) |
LU (1) | LU78781A1 (en) |
MX (1) | MX143029A (en) |
NL (1) | NL7714549A (en) |
SE (1) | SE7714903L (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2138652B (en) * | 1983-04-23 | 1986-04-23 | Standard Telephones Cables Ltd | Distributed pabx |
US4789980A (en) * | 1986-08-18 | 1988-12-06 | American Telephone & Telegraph Company, At&T Bell Laboratories | Switching techniques for FDM communication systems |
US5594726A (en) * | 1993-09-17 | 1997-01-14 | Scientific-Atlanta, Inc. | Frequency agile broadband communications system |
DE4407831C2 (en) * | 1994-03-09 | 2002-04-11 | Deutsche Telekom Ag | Procedure for accessing passive coaxial cable networks |
EP0687084A3 (en) * | 1994-06-06 | 1997-10-22 | Prueftechnik Und Mobile Kommun | Variable bandwidth communication system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL237528A (en) * | 1959-03-25 | |||
US3513264A (en) * | 1966-05-13 | 1970-05-19 | Hughes Aircraft Co | Controlled random multiple access communication system |
GB1402986A (en) * | 1971-05-13 | 1975-08-13 | Kent Meters Ltd | Interrogation of remote stations |
US3764915A (en) * | 1971-06-25 | 1973-10-09 | Bell Telephone Labor Inc | Dynamic program control for channel assignment in mobile communication systems |
US3864521A (en) * | 1973-10-25 | 1975-02-04 | Rockwell International Corp | Frequency division multiplex telephone system |
FR2307411A1 (en) * | 1975-04-11 | 1976-11-05 | Thomson Csf | TELEPHONE SET WITH A PROGRAMMABLE BEARER GENERATOR AND TELEPHONE SYSTEM USING SUCH A SET |
DE2555458A1 (en) * | 1975-12-10 | 1977-06-16 | Licentia Gmbh | Frequency multiplexed private telephone exchange - has control containing transmitters and receivers for control signals |
-
1976
- 1976-12-30 DE DE2659664A patent/DE2659664C2/en not_active Expired
-
1977
- 1977-12-15 CH CH1547177A patent/CH625927A5/en not_active IP Right Cessation
- 1977-12-16 MX MX171822A patent/MX143029A/en unknown
- 1977-12-19 FR FR7738248A patent/FR2376584A1/en active Granted
- 1977-12-21 AU AU31830/77A patent/AU516846B2/en not_active Expired
- 1977-12-22 GB GB51081/77A patent/GB1598917A/en not_active Expired
- 1977-12-22 IT IT31082/77A patent/IT1089195B/en active
- 1977-12-26 AR AR270502A patent/AR212060A1/en active
- 1977-12-28 JP JP15866277A patent/JPS5384607A/en active Pending
- 1977-12-28 LU LU78781A patent/LU78781A1/en unknown
- 1977-12-29 BR BR7708766A patent/BR7708766A/en unknown
- 1977-12-29 IE IE2646/77A patent/IE45958B1/en unknown
- 1977-12-29 SE SE7714903A patent/SE7714903L/en unknown
- 1977-12-29 NL NL7714549A patent/NL7714549A/en not_active Application Discontinuation
- 1977-12-29 DK DK585777A patent/DK585777A/en unknown
- 1977-12-30 BE BE184032A patent/BE862549A/en unknown
Also Published As
Publication number | Publication date |
---|---|
FR2376584A1 (en) | 1978-07-28 |
IT1089195B (en) | 1985-06-18 |
BE862549A (en) | 1978-06-30 |
IE45958B1 (en) | 1983-01-12 |
AU3183077A (en) | 1979-06-28 |
DE2659664C2 (en) | 1979-04-05 |
LU78781A1 (en) | 1979-07-20 |
JPS5384607A (en) | 1978-07-26 |
BR7708766A (en) | 1978-09-05 |
NL7714549A (en) | 1978-07-04 |
AU516846B2 (en) | 1981-06-25 |
CH625927A5 (en) | 1981-10-15 |
DE2659664B1 (en) | 1978-07-06 |
AR212060A1 (en) | 1978-04-28 |
DK585777A (en) | 1978-07-01 |
MX143029A (en) | 1981-02-10 |
SE7714903L (en) | 1978-07-01 |
GB1598917A (en) | 1981-09-23 |
FR2376584B1 (en) | 1982-01-22 |
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