FR2251147B1 - - Google Patents
Info
- Publication number
- FR2251147B1 FR2251147B1 FR7436908A FR7436908A FR2251147B1 FR 2251147 B1 FR2251147 B1 FR 2251147B1 FR 7436908 A FR7436908 A FR 7436908A FR 7436908 A FR7436908 A FR 7436908A FR 2251147 B1 FR2251147 B1 FR 2251147B1
- Authority
- FR
- France
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Time-Division Multiplex Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732356448 DE2356448C2 (en) | 1973-11-12 | 1973-11-12 | Series system with a central control |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2251147A1 FR2251147A1 (en) | 1975-06-06 |
FR2251147B1 true FR2251147B1 (en) | 1982-04-02 |
Family
ID=5897877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7436908A Expired FR2251147B1 (en) | 1973-11-12 | 1974-11-07 |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE821976A (en) |
DE (1) | DE2356448C2 (en) |
DK (1) | DK576974A (en) |
FR (1) | FR2251147B1 (en) |
GB (1) | GB1453496A (en) |
IT (1) | IT1025562B (en) |
NL (1) | NL7414563A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2320020A1 (en) * | 1975-08-01 | 1977-02-25 | Gte Atea Nv | Electronic trunk line connected communication system - has modular unit construction with central unit, several trunk lines and local subscriber links |
GB1538996A (en) * | 1976-03-10 | 1979-01-24 | Chestel Inc | Communication switching system |
DE2752987C2 (en) * | 1977-11-28 | 1984-12-20 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Circuit arrangement for displaying different, preferably optical, identifiers by means of display elements in terminals of a telecommunications system |
DE3036205A1 (en) * | 1980-09-25 | 1982-05-06 | Siemens AG, 1000 Berlin und 8000 München | Digital data transmission between exchange and terminal - using rising edge of each logic one pulse for synchronising terminal with exchange |
DE3112894C2 (en) * | 1981-03-31 | 1985-06-27 | Siemens AG, 1000 Berlin und 8000 München | Transmit and receive unit for binary control data signals to be transmitted in telephone exchanges, especially in small private branch exchanges |
CA1169597A (en) * | 1981-09-11 | 1984-06-19 | Gordon D. Benning | Home communications and control system |
US4523056A (en) * | 1982-12-27 | 1985-06-11 | Reliance Electric Company | Telephone including resistive array for dialing and system for using such telephone |
-
1973
- 1973-11-12 DE DE19732356448 patent/DE2356448C2/en not_active Expired
-
1974
- 1974-11-06 DK DK576974A patent/DK576974A/da unknown
- 1974-11-07 GB GB4814174A patent/GB1453496A/en not_active Expired
- 1974-11-07 FR FR7436908A patent/FR2251147B1/fr not_active Expired
- 1974-11-08 NL NL7414563A patent/NL7414563A/en not_active Application Discontinuation
- 1974-11-08 BE BE2053966A patent/BE821976A/en unknown
- 1974-11-11 IT IT2926874A patent/IT1025562B/en active
Also Published As
Publication number | Publication date |
---|---|
GB1453496A (en) | 1976-10-20 |
BE821976A (en) | 1975-05-09 |
IT1025562B (en) | 1978-08-30 |
AU7639274A (en) | 1976-06-17 |
FR2251147A1 (en) | 1975-06-06 |
DE2356448C2 (en) | 1983-01-20 |
NL7414563A (en) | 1975-05-14 |
DK576974A (en) | 1975-07-14 |
DE2356448A1 (en) | 1975-05-15 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |