FR836524A - Building of switches for telephone network exchanges - Google Patents
Building of switches for telephone network exchangesInfo
- Publication number
- FR836524A FR836524A FR836524DA FR836524A FR 836524 A FR836524 A FR 836524A FR 836524D A FR836524D A FR 836524DA FR 836524 A FR836524 A FR 836524A
- Authority
- FR
- France
- Prior art keywords
- switches
- building
- telephone network
- network exchanges
- exchanges
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/04—Frames or mounting racks for selector switches; Accessories therefor, e.g. frame cover
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/76—Wired systems
- H04H20/77—Wired systems using carrier waves
- H04H20/81—Wired systems using carrier waves combined with telephone network over which the broadcast is continuously available
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/16—Arrangements for interconnection between switching centres in systems employing carrier frequencies
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Exchange Systems With Centralized Control (AREA)
- Structure Of Telephone Exchanges (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE497534X | 1937-04-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR836524A true FR836524A (en) | 1939-01-19 |
Family
ID=6545191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR836524D Expired FR836524A (en) | 1937-04-13 | 1938-04-12 | Building of switches for telephone network exchanges |
Country Status (5)
Country | Link |
---|---|
US (1) | US2208917A (en) |
BE (1) | BE427559A (en) |
CH (1) | CH203270A (en) |
FR (1) | FR836524A (en) |
GB (1) | GB497534A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL78682B (en) * | 1949-01-26 |
-
1938
- 1938-04-09 CH CH203270D patent/CH203270A/en unknown
- 1938-04-12 FR FR836524D patent/FR836524A/en not_active Expired
- 1938-04-12 GB GB11219/38A patent/GB497534A/en not_active Expired
- 1938-04-13 US US201715A patent/US2208917A/en not_active Expired - Lifetime
- 1938-04-13 BE BE427559D patent/BE427559A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
GB497534A (en) | 1938-12-21 |
BE427559A (en) | 1938-05-31 |
CH203270A (en) | 1939-02-28 |
US2208917A (en) | 1940-07-23 |
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