CH283266A - Circuit arrangement in a telephone private branch exchange. - Google Patents
Circuit arrangement in a telephone private branch exchange.Info
- Publication number
- CH283266A CH283266A CH283266DA CH283266A CH 283266 A CH283266 A CH 283266A CH 283266D A CH283266D A CH 283266DA CH 283266 A CH283266 A CH 283266A
- Authority
- CH
- Switzerland
- Prior art keywords
- circuit arrangement
- private branch
- branch exchange
- telephone private
- telephone
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
- H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
- H04Q3/625—Arrangements in the private branch exchange
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE283266X | 1949-09-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH283266A true CH283266A (en) | 1952-05-31 |
Family
ID=6045354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH283266D CH283266A (en) | 1949-09-19 | 1950-03-17 | Circuit arrangement in a telephone private branch exchange. |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH283266A (en) |
FR (1) | FR1019957A (en) |
GB (1) | GB673249A (en) |
NL (2) | NL152736B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2854522A (en) * | 1957-04-01 | 1958-09-30 | Gen Dynamics Corp | Maximum security automatic telephone system |
-
0
- NL NL80465D patent/NL80465C/xx active
- NL NL666602675A patent/NL152736B/en unknown
-
1950
- 1950-03-17 CH CH283266D patent/CH283266A/en unknown
- 1950-04-12 GB GB9001/50A patent/GB673249A/en not_active Expired
- 1950-05-19 FR FR1019957D patent/FR1019957A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL80465C (en) | |
GB673249A (en) | 1952-06-04 |
NL152736B (en) | |
FR1019957A (en) | 1953-01-30 |
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