GB560132A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB560132A
GB560132A GB20779/43A GB2077943A GB560132A GB 560132 A GB560132 A GB 560132A GB 20779/43 A GB20779/43 A GB 20779/43A GB 2077943 A GB2077943 A GB 2077943A GB 560132 A GB560132 A GB 560132A
Authority
GB
United Kingdom
Prior art keywords
automatic
impulses
relating
junction
telephone systems
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
GB20779/43A
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 GB13098/42A priority Critical patent/GB560120A/en
Priority to GB20779/43A priority patent/GB560132A/en
Priority to US499194A priority patent/US2405620A/en
Publication of GB560132A publication Critical patent/GB560132A/en
Priority to DEA3911D priority patent/DE910066C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of dc pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

560,132. Automatic and semi-automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., TAYLOR, R., and BAKER, G. T. Sept. 17, 1942, No. 20779/43. Divided out of 560,120. Drawings to Specification. [Class 40 (iv)] In a system in which impulses are sent over a long junction by the intermittent completion of a direct current circuit thereover, a preliminary impulse which results from the seizure of the junction operates a grid-controlled gas-discharge tube at the incoming end and prepares the equipment for the reception of the numerical impulses. The system is the same as that described in Specification 560,120. Specifications 551,187 and 556,326 are referred to.
GB20779/43A 1942-09-17 1942-09-17 Improvements in or relating to telephone systems Expired GB560132A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB13098/42A GB560120A (en) 1942-09-17 1942-09-17 Improvements in or relating to telephone systems
GB20779/43A GB560132A (en) 1942-09-17 1942-09-17 Improvements in or relating to telephone systems
US499194A US2405620A (en) 1942-09-17 1943-08-19 Telephone system
DEA3911D DE910066C (en) 1942-09-17 1948-12-31 Circuit arrangement for telephone systems

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB2405620X 1942-09-17
GB20779/43A GB560132A (en) 1942-09-17 1942-09-17 Improvements in or relating to telephone systems
GB910066X 1942-09-17

Publications (1)

Publication Number Publication Date
GB560132A true GB560132A (en) 1944-03-21

Family

ID=27257906

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20779/43A Expired GB560132A (en) 1942-09-17 1942-09-17 Improvements in or relating to telephone systems

Country Status (1)

Country Link
GB (1) GB560132A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2510062A (en) * 1944-02-11 1950-06-06 Int Standard Electric Corp Electronic signal regenerator for translating alternating current impulses to direct current impulses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2510062A (en) * 1944-02-11 1950-06-06 Int Standard Electric Corp Electronic signal regenerator for translating alternating current impulses to direct current impulses

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