AT281133B - Telephone switching system to which subscriber sets and subscriber sets with number switches and data receivers set up for the reception of audio frequency signals are connected - Google Patents
Telephone switching system to which subscriber sets and subscriber sets with number switches and data receivers set up for the reception of audio frequency signals are connectedInfo
- Publication number
- AT281133B AT281133B AT634566A AT634566A AT281133B AT 281133 B AT281133 B AT 281133B AT 634566 A AT634566 A AT 634566A AT 634566 A AT634566 A AT 634566A AT 281133 B AT281133 B AT 281133B
- Authority
- AT
- Austria
- Prior art keywords
- subscriber sets
- reception
- audio frequency
- frequency signals
- switching system
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
-
- 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
- H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Interface Circuits In Exchanges (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1965ST024376 DE1264519B (en) | 1965-09-10 | 1965-09-10 | Data transmission in a telephone exchange to which subscriber sets and subscriber sets with a number switch set up for tone-frequency touch dialing are connected |
Publications (1)
Publication Number | Publication Date |
---|---|
AT281133B true AT281133B (en) | 1970-05-11 |
Family
ID=7460089
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT634566A AT281133B (en) | 1965-09-10 | 1966-07-04 | Telephone switching system to which subscriber sets and subscriber sets with number switches and data receivers set up for the reception of audio frequency signals are connected |
Country Status (6)
Country | Link |
---|---|
AT (1) | AT281133B (en) |
CH (1) | CH453438A (en) |
DE (1) | DE1264519B (en) |
ES (1) | ES330869A1 (en) |
NL (1) | NL6612563A (en) |
SE (1) | SE344151B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE451422B (en) * | 1985-06-27 | 1987-10-05 | Anders Edvard Trell | PROCEDURE FOR SIGNAL PROCESSING AT A PORT-PHONE PLANT INTENDED TO BE CONNECTED TO AN GENERAL PHONE |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1074669B (en) * | 1957-01-08 | 1960-02-04 | International Standard Electric Corporation, New York, N. Y. (V.St.A.) | Transistor oscillator arrangement for generating a subscriber's own frequency for identifying the calling subscriber in telephone systems |
-
1965
- 1965-09-10 DE DE1965ST024376 patent/DE1264519B/en active Pending
-
1966
- 1966-07-04 AT AT634566A patent/AT281133B/en not_active IP Right Cessation
- 1966-09-02 ES ES0330869A patent/ES330869A1/en not_active Expired
- 1966-09-06 NL NL6612563A patent/NL6612563A/xx unknown
- 1966-09-08 SE SE1207366A patent/SE344151B/xx unknown
- 1966-09-09 CH CH1311166A patent/CH453438A/en unknown
Also Published As
Publication number | Publication date |
---|---|
ES330869A1 (en) | 1967-06-16 |
CH453438A (en) | 1968-06-14 |
DE1264519B (en) | 1968-03-28 |
NL6612563A (en) | 1967-03-13 |
SE344151B (en) | 1972-03-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |