AT233634B - Circuit arrangement for an intercom - Google Patents
Circuit arrangement for an intercomInfo
- Publication number
- AT233634B AT233634B AT102860A AT102860A AT233634B AT 233634 B AT233634 B AT 233634B AT 102860 A AT102860 A AT 102860A AT 102860 A AT102860 A AT 102860A AT 233634 B AT233634 B AT 233634B
- Authority
- AT
- Austria
- Prior art keywords
- intercom
- circuit arrangement
- arrangement
- circuit
- Prior art date
Links
Classifications
-
- 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
- H04M9/001—Two-way communication systems between a limited number of parties
-
- 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)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT102860A AT233634B (en) | 1960-02-10 | 1960-02-10 | Circuit arrangement for an intercom |
CH134561A CH388390A (en) | 1960-02-10 | 1961-02-06 | Circuit arrangement for an intercom |
DE1961J0019384 DE1164503B (en) | 1960-02-10 | 1961-02-07 | Circuit arrangement for an intercom. |
FR852051A FR1288163A (en) | 1960-02-10 | 1961-02-08 | |
BE600001A BE600001A (en) | 1960-02-10 | 1961-02-09 | Improvements to inter-communication systems |
FR872145A FR80805E (en) | 1960-02-10 | 1961-09-01 | |
FR891904A FR81431E (en) | 1960-02-10 | 1962-03-22 | |
FR893614A FR82257E (en) | 1960-02-10 | 1962-04-06 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT102860A AT233634B (en) | 1960-02-10 | 1960-02-10 | Circuit arrangement for an intercom |
Publications (1)
Publication Number | Publication Date |
---|---|
AT233634B true AT233634B (en) | 1964-05-25 |
Family
ID=3505113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT102860A AT233634B (en) | 1960-02-10 | 1960-02-10 | Circuit arrangement for an intercom |
Country Status (5)
Country | Link |
---|---|
AT (1) | AT233634B (en) |
BE (1) | BE600001A (en) |
CH (1) | CH388390A (en) |
DE (1) | DE1164503B (en) |
FR (1) | FR1288163A (en) |
-
1960
- 1960-02-10 AT AT102860A patent/AT233634B/en active
-
1961
- 1961-02-06 CH CH134561A patent/CH388390A/en unknown
- 1961-02-07 DE DE1961J0019384 patent/DE1164503B/en active Pending
- 1961-02-08 FR FR852051A patent/FR1288163A/fr not_active Expired
- 1961-02-09 BE BE600001A patent/BE600001A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BE600001A (en) | 1961-05-29 |
FR1288163A (en) | 1962-02-12 |
DE1164503B (en) | 1964-03-05 |
CH388390A (en) | 1965-02-28 |
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