GB531205A - Improvements in or relating to telecommunication exchange systems - Google Patents
Improvements in or relating to telecommunication exchange systemsInfo
- Publication number
- GB531205A GB531205A GB19115/39A GB1911539A GB531205A GB 531205 A GB531205 A GB 531205A GB 19115/39 A GB19115/39 A GB 19115/39A GB 1911539 A GB1911539 A GB 1911539A GB 531205 A GB531205 A GB 531205A
- Authority
- GB
- United Kingdom
- Prior art keywords
- over
- relay
- register
- finder
- impulses
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/04—Recording calls, or communications in printed, perforated or other permanent form
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/08—Metering calls to called party, i.e. B-party charged for the communication
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Relay Circuits (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB244473X | 1939-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB531205A true GB531205A (en) | 1940-12-31 |
Family
ID=10211845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19115/39A Expired GB531205A (en) | 1939-06-30 | 1939-06-30 | Improvements in or relating to telecommunication exchange systems |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE440021A (xx) |
CH (1) | CH244473A (xx) |
FR (1) | FR867232A (xx) |
GB (1) | GB531205A (xx) |
-
0
- BE BE440021D patent/BE440021A/xx unknown
-
1939
- 1939-06-30 GB GB19115/39A patent/GB531205A/en not_active Expired
-
1940
- 1940-06-29 CH CH244473D patent/CH244473A/de unknown
- 1940-09-19 FR FR867232D patent/FR867232A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR867232A (fr) | 1941-10-07 |
CH244473A (de) | 1946-09-15 |
BE440021A (xx) |
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