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GB1131663A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

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
Application number
GB3567366A
Inventor
Geoffrey Charles Curson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Priority to GB3567366A priority Critical patent/GB1131663A/en
Publication of GB1131663A publication Critical patent/GB1131663A/en
Expired legal-status Critical Current

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.
GB3567366A 1966-08-09 1966-08-09 Improvements in or relating to telephone systems Expired GB1131663A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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