GB1131663A - Improvements in or relating to telephone systems - Google Patents
Improvements in or relating to telephone systemsInfo
- Publication number
- GB1131663A GB1131663A GB3567366A GB3567366A GB1131663A GB 1131663 A GB1131663 A GB 1131663A GB 3567366 A GB3567366 A GB 3567366A GB 3567366 A GB3567366 A GB 3567366A GB 1131663 A GB1131663 A GB 1131663A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relays
- keys
- relay
- dictation
- relating
- 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
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/10—Telephonic communication systems specially adapted for combination with other electrical systems with dictation recording and playback systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
1,131,663. Dictation systems. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. 28 July, 1967 [9 Aug., 1966], No. 35673/66. Heading H4K. In a private exchange in which a subscriber having access by dialling or otherwise to dictation equipment is provided with keys for controlling the operation thereof through the medium of a selective receiving circuit SRE, all the control signals consist primarily of an earth connection to the loop to energize a differential relay DF. The keys, as shown, correspond to (1) start/stop (KSZ), (2) rewind for playback (KRW), (3) letter index for marking a desired part of the record (KLI), and (4) call supervisor (KCS). In each case relays DF, CS pull up in turn and then fall back, and resistance R1 and rectifiers MR2, MR3 associated with the keys ensure the operation of (1) neither of two relays X, Y, (2) relay X, (3) relay Y, or (4) both relays X, Y.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3567366A GB1131663A (en) | 1966-08-09 | 1966-08-09 | Improvements in or relating to telephone systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3567366A GB1131663A (en) | 1966-08-09 | 1966-08-09 | Improvements in or relating to telephone systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1131663A true GB1131663A (en) | 1968-10-23 |
Family
ID=10380315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3567366A Expired GB1131663A (en) | 1966-08-09 | 1966-08-09 | Improvements in or relating to telephone systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1131663A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2140250A (en) * | 1983-05-18 | 1984-11-21 | Dictaphone Corp | Remote terminal for use with central dictation apparatus |
-
1966
- 1966-08-09 GB GB3567366A patent/GB1131663A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2140250A (en) * | 1983-05-18 | 1984-11-21 | Dictaphone Corp | Remote terminal for use with central dictation apparatus |
US4658097A (en) * | 1983-05-18 | 1987-04-14 | Dictaphone Corporation | Remote terminal for use with central dictation apparatus |
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