CH431623A - Electroacoustic transmission system - Google Patents
Electroacoustic transmission systemInfo
- Publication number
- CH431623A CH431623A CH419762A CH419762A CH431623A CH 431623 A CH431623 A CH 431623A CH 419762 A CH419762 A CH 419762A CH 419762 A CH419762 A CH 419762A CH 431623 A CH431623 A CH 431623A
- Authority
- CH
- Switzerland
- Prior art keywords
- transmission system
- electroacoustic transmission
- electroacoustic
- transmission
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/001—Two-way communication systems between a limited number of parties
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/04—Arrangements for interconnection not involving centralised switching involving a separate line for each pair of parties
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT674460A AT221603B (en) | 1960-09-02 | 1960-09-02 | Circuit arrangement for a transmission system for sound events |
AT283161A AT227789B (en) | 1961-04-08 | 1961-04-08 | Circuit arrangement for a transmission system for sound events |
Publications (1)
Publication Number | Publication Date |
---|---|
CH431623A true CH431623A (en) | 1967-03-15 |
Family
ID=25599141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH419762A CH431623A (en) | 1960-09-02 | 1962-04-05 | Electroacoustic transmission system |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH431623A (en) |
GB (1) | GB957457A (en) |
-
1962
- 1962-04-05 CH CH419762A patent/CH431623A/en unknown
- 1962-04-06 GB GB1335762A patent/GB957457A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB957457A (en) | 1964-05-06 |
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