FR2319256B1 - - Google Patents
Info
- Publication number
- FR2319256B1 FR2319256B1 FR7522927A FR7522927A FR2319256B1 FR 2319256 B1 FR2319256 B1 FR 2319256B1 FR 7522927 A FR7522927 A FR 7522927A FR 7522927 A FR7522927 A FR 7522927A FR 2319256 B1 FR2319256 B1 FR 2319256B1
- 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
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
- H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7522927A FR2319256A1 (fr) | 1975-07-23 | 1975-07-23 | Circuits electroniques et electromagnetiques permettant l'adaptation d'un clavier numerique a un poste telephonique a cadran d'appel par quatre fils |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7522927A FR2319256A1 (fr) | 1975-07-23 | 1975-07-23 | Circuits electroniques et electromagnetiques permettant l'adaptation d'un clavier numerique a un poste telephonique a cadran d'appel par quatre fils |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2319256A1 FR2319256A1 (fr) | 1977-02-18 |
| FR2319256B1 true FR2319256B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1977-12-09 |
Family
ID=9158239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7522927A Granted FR2319256A1 (fr) | 1975-07-23 | 1975-07-23 | Circuits electroniques et electromagnetiques permettant l'adaptation d'un clavier numerique a un poste telephonique a cadran d'appel par quatre fils |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2319256A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE794179A (nl) * | 1972-01-21 | 1973-07-18 | Itt | Geintegreerde schakeling voor het kiezen van abonneenummers met druktoetsen |
| GB1347929A (en) * | 1972-02-17 | 1974-02-27 | Standard Telephones Cables Ltd | Telephone subscribers instruments |
| DE2210852C2 (de) * | 1972-03-07 | 1982-07-29 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Schaltungsanordnung zur Wählzeichenstromstoßgabe in Fernmeldeanlagen |
| GB1394148A (en) * | 1972-09-11 | 1975-05-14 | Int Standard Electric Corp | Push-button telphone subset |
-
1975
- 1975-07-23 FR FR7522927A patent/FR2319256A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2319256A1 (fr) | 1977-02-18 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TP | Transmission of property | ||
| ST | Notification of lapse |