GB530669A - Improvements in or relating to circuit arrangements for combined telephone and telegraph transmission systems - Google Patents

Improvements in or relating to circuit arrangements for combined telephone and telegraph transmission systems

Info

Publication number
GB530669A
GB530669A GB19118/39A GB1911839A GB530669A GB 530669 A GB530669 A GB 530669A GB 19118/39 A GB19118/39 A GB 19118/39A GB 1911839 A GB1911839 A GB 1911839A GB 530669 A GB530669 A GB 530669A
Authority
GB
United Kingdom
Prior art keywords
telephone
relating
telegraph
transmission systems
circuit arrangements
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
GB19118/39A
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.)
JAN SOBOLA
LUCIEN ANGELIN GUSTAVE ALPHONS
Original Assignee
JAN SOBOLA
LUCIEN ANGELIN GUSTAVE ALPHONS
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 JAN SOBOLA, LUCIEN ANGELIN GUSTAVE ALPHONS filed Critical JAN SOBOLA
Publication of GB530669A publication Critical patent/GB530669A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/08—Arrangements for interconnection between switching centres for phantom working
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

530,669. Superposed telephony and telegraphy. STANDARD TELEPHONES & CABLES, Ltd. (Braem, L. A. G. A., and Sobola, J.). June 30, 1939, No. 19118. [Class 40 (iv)] In an arrangement for separating telephone and telegraph currents for example at a telephone repeater station by means of high-pass and low-pass filters, the two halves of the telephone repeating coils RC1, RC2 are connected in parallel so that their mutual inductance forms the shunt inductance of the high-pass filters. The invention may also be employed at a terminal station where a telegraph channel is superimposed on a short non-repeater telephone circuit or where a duplex channel is superimposed on a four-wire telephone circuit. Specification 530,621 is referred to.
GB19118/39A 1939-06-13 1939-06-30 Improvements in or relating to circuit arrangements for combined telephone and telegraph transmission systems Expired GB530669A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB215524X 1939-06-13

Publications (1)

Publication Number Publication Date
GB530669A true GB530669A (en) 1940-12-17

Family

ID=10164814

Family Applications (2)

Application Number Title Priority Date Filing Date
GB17287/39A Expired GB530621A (en) 1939-06-13 1939-06-13 Improvements in or relating to superimposed telegraph and telephone systems
GB19118/39A Expired GB530669A (en) 1939-06-13 1939-06-30 Improvements in or relating to circuit arrangements for combined telephone and telegraph transmission systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB17287/39A Expired GB530621A (en) 1939-06-13 1939-06-13 Improvements in or relating to superimposed telegraph and telephone systems

Country Status (4)

Country Link
BE (2) BE439942A (en)
CH (2) CH215524A (en)
FR (2) FR947900A (en)
GB (2) GB530621A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972640C (en) * 1952-04-10 1959-08-27 Siemens Ag Circuit arrangement for telecommunications systems for the simultaneous transmission of telephone currents and signals over the same line wires

Also Published As

Publication number Publication date
BE439843A (en)
CH228092A (en) 1943-07-31
CH215524A (en) 1941-06-30
FR947900A (en) 1949-07-15
GB530621A (en) 1940-12-17
BE439942A (en)
FR57449E (en) 1953-01-02

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