FR2319256A1 - Circuits electroniques et electromagnetiques permettant l'adaptation d'un clavier numerique a un poste telephonique a cadran d'appel par quatre fils - Google Patents
Circuits electroniques et electromagnetiques permettant l'adaptation d'un clavier numerique a un poste telephonique a cadran d'appel par quatre filsInfo
- Publication number
- FR2319256A1 FR2319256A1 FR7522927A FR7522927A FR2319256A1 FR 2319256 A1 FR2319256 A1 FR 2319256A1 FR 7522927 A FR7522927 A FR 7522927A FR 7522927 A FR7522927 A FR 7522927A FR 2319256 A1 FR2319256 A1 FR 2319256A1
- Authority
- FR
- France
- Prior art keywords
- numbering
- circuit
- cut
- suppress
- telephone network
- 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.)
- Granted
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 true FR2319256A1 (fr) | 1977-02-18 |
FR2319256B1 FR2319256B1 (fr) | 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 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2168473A1 (fr) * | 1972-01-21 | 1973-08-31 | Itt | |
DE2210852A1 (de) * | 1972-03-07 | 1973-09-13 | Telefonbau & Normalzeit Gmbh | Schaltungsanordnung zur waehlzeichenstromstossgabe in fernmeldeanlagen |
FR2172190A1 (fr) * | 1972-02-17 | 1973-09-28 | Int Standard Electric Corp | |
FR2199236A1 (fr) * | 1972-09-11 | 1974-04-05 | Int Standard Electric Corp |
-
1975
- 1975-07-23 FR FR7522927A patent/FR2319256A1/fr active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2168473A1 (fr) * | 1972-01-21 | 1973-08-31 | Itt | |
FR2172190A1 (fr) * | 1972-02-17 | 1973-09-28 | Int Standard Electric Corp | |
DE2210852A1 (de) * | 1972-03-07 | 1973-09-13 | Telefonbau & Normalzeit Gmbh | Schaltungsanordnung zur waehlzeichenstromstossgabe in fernmeldeanlagen |
FR2199236A1 (fr) * | 1972-09-11 | 1974-04-05 | Int Standard Electric Corp |
Also Published As
Publication number | Publication date |
---|---|
FR2319256B1 (fr) | 1977-12-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |