CH544461A - Telephone subscriber station for generating series of pulses preselected using a keyboard - Google Patents
Telephone subscriber station for generating series of pulses preselected using a keyboardInfo
- Publication number
- CH544461A CH544461A CH972972A CH972972A CH544461A CH 544461 A CH544461 A CH 544461A CH 972972 A CH972972 A CH 972972A CH 972972 A CH972972 A CH 972972A CH 544461 A CH544461 A CH 544461A
- Authority
- CH
- Switzerland
- Prior art keywords
- preselected
- pulses
- keyboard
- subscriber station
- telephone subscriber
- Prior art date
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
-
- 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
- H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
- H04M1/272—Devices whereby a plurality of signals may be stored simultaneously with provision for storing only one subscriber number at a time, e.g. by keyboard or dial
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH972972A CH544461A (en) | 1972-06-29 | 1972-06-29 | Telephone subscriber station for generating series of pulses preselected using a keyboard |
AT506473A AT340484B (en) | 1972-06-29 | 1973-06-08 | TELEPHONE SUBSCRIBER STATION WITH A KEYBOARD FOR ENTERING DIALING INFORMATION |
DE19732329550 DE2329550B2 (en) | 1972-06-29 | 1973-06-09 | Telephone subscriber handset with push-button selector - uses electronic switching cct. to supply pulse series representing selected numbers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH972972A CH544461A (en) | 1972-06-29 | 1972-06-29 | Telephone subscriber station for generating series of pulses preselected using a keyboard |
Publications (1)
Publication Number | Publication Date |
---|---|
CH544461A true CH544461A (en) | 1973-11-15 |
Family
ID=4355044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH972972A CH544461A (en) | 1972-06-29 | 1972-06-29 | Telephone subscriber station for generating series of pulses preselected using a keyboard |
Country Status (3)
Country | Link |
---|---|
AT (1) | AT340484B (en) |
CH (1) | CH544461A (en) |
DE (1) | DE2329550B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2282198A1 (en) * | 1974-08-12 | 1976-03-12 | Trt Telecom Radio Electr | Keyboard telephone for long lines - uses speech loop current to power MOS circuit |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT376089B (en) * | 1978-09-20 | 1984-10-10 | Siemens Ag Oesterreich | CIRCUIT FOR TELECOMMUNICATION, ESPECIALLY TELEPHONE PARTICIPANTS, AND TRANSMISSIONS WITH IMPULSE GIVING CONTROL |
DE3119080C2 (en) * | 1981-05-14 | 1985-12-12 | Neumann Elektronik GmbH, 4330 Mülheim | Automatic answering machine |
DE3201536C2 (en) * | 1982-01-20 | 1986-02-06 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Circuit arrangement for a signaling device in telecommunications systems |
DE3245005C2 (en) * | 1982-12-06 | 1984-11-22 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Power supply for a circuit arrangement for impulse dialing signals in a telephone set |
DE3725315C2 (en) * | 1987-07-30 | 1995-04-06 | Siemens Ag | Circuit arrangement for an electronic exchange restrictor in an exchange set of a private branch exchange with impulse-giving dialing control |
-
1972
- 1972-06-29 CH CH972972A patent/CH544461A/en not_active IP Right Cessation
-
1973
- 1973-06-08 AT AT506473A patent/AT340484B/en active
- 1973-06-09 DE DE19732329550 patent/DE2329550B2/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2282198A1 (en) * | 1974-08-12 | 1976-03-12 | Trt Telecom Radio Electr | Keyboard telephone for long lines - uses speech loop current to power MOS circuit |
Also Published As
Publication number | Publication date |
---|---|
DE2329550A1 (en) | 1974-01-17 |
AT340484B (en) | 1977-12-12 |
DE2329550B2 (en) | 1976-01-02 |
ATA506473A (en) | 1977-04-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AR211521A1 (en) | A METHOD AND APPARATUS OF ELECTROLYSIS | |
NL182130C (en) | NOZZLE PLATE. | |
BE814865A (en) | FREQUENCY DIVISION AND TIME DIVISION TELECOMMUNICATIONS DEVICE | |
CH555490A (en) | DEVICE FOR GENERATING A TUMBING MOTION. | |
AT323999B (en) | METHOD FOR PRODUCING POLYVINYL HALOGENIDES | |
CH544461A (en) | Telephone subscriber station for generating series of pulses preselected using a keyboard | |
CH553513A (en) | PULSE DEVICE FOR GENERATING PERIODIC OUTPUT PULSES. | |
AT359555B (en) | PULSE GENERATOR | |
AT322018B (en) | DEVICE FOR GENERATING VIDEO SWITCHING PULSES | |
NL7509510A (en) | TELECOMMUNICATIONS METHOD. | |
AT359545B (en) | METHOD FOR GENERATING PERIODIC POWERS | |
IT1005900B (en) | TIME DIVISION MULTIPLE TELECOMMUNICATIONS NETWORK WITH PULSE CODE MODULATION | |
NL7512757A (en) | PULSE GENERATOR. | |
CH556622A (en) | PULSE GENERATOR FOR GENERATING DIFFERENT OUTPUT PULSES AT SEVERAL OUTPUTS. | |
CH510961A (en) | Method for transmitting a large number of binary messages over a transparent channel | |
NL7502208A (en) | POLYMERIZATION METHOD. | |
CH531223A (en) | Device for generating a random sequence of binary pulses | |
SE7507688L (en) | PHONE NUMBER TRANSMITTER | |
CH550430A (en) | METHOD OF STABILIZING A LINE OF SIGHT. | |
SU505124A1 (en) | Pulse Generator | |
BR7503049A (en) | TELEPHONE CONFERENCE METHOD | |
AT304955B (en) | Process for generating energy | |
AT325110B (en) | CIRCUIT ARRANGEMENT FOR A PULSE GENERATOR, IN PARTICULAR IN TELEPHONE SUBSCRIBER STATIONS, FOR GENERATING TWO REGULAR SEQUENCES OF RECTANGULAR PULSES | |
IT987917B (en) | METHOD FOR THE OPERATION OF A COMMUTATION PLANT FOR TELECOMMUNICATIONS | |
CH553309A (en) | METHOD OF MANUFACTURING A CERAMIC FACING PLATE. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |