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GB294618A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB294618A
GB294618A GB21867/28D GB2186728D GB294618A GB 294618 A GB294618 A GB 294618A GB 21867/28 D GB21867/28 D GB 21867/28D GB 2186728 D GB2186728 D GB 2186728D GB 294618 A GB294618 A GB 294618A
Authority
GB
United Kingdom
Prior art keywords
line
party
register
controller
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
GB21867/28D
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
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 Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Publication of GB294618A publication Critical patent/GB294618A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Relay Circuits (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

294,618. Associated Telephone & Telegraph Co., (Assignees of Wicks, J.). Jan. 7, 1927, [Convention date]. Divided on 283,201. Drawings to Specification. Automatic exchange systems; party-line systems.-In a party-line system, the selection of and the connection of the appropriate ringing- current is effected in a register-controller, which makes a test over one of the talking conductors and if the wanted line is busy immediately releases itself. The invention is described with reference to a system, identical with that described in Specification 283,201, in which group selectors and connectors of single-motion step-by-step or power-driven type are set numerically by reverting impulses sent back to a register-controller. Specification 304,702 also is referred to.
GB21867/28D 1927-01-07 1927-12-14 Improvements in or relating to telephone systems Expired GB294618A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US283201XA 1927-01-07 1927-01-07

Publications (1)

Publication Number Publication Date
GB294618A true GB294618A (en) 1929-03-14

Family

ID=21842786

Family Applications (3)

Application Number Title Priority Date Filing Date
GB21867/28D Expired GB294618A (en) 1927-01-07 1927-12-14 Improvements in or relating to telephone systems
GB2535/29A Expired GB304702A (en) 1927-01-07 1927-12-14 Improvements in or relating to telephone systems
GB33906/27A Expired GB283201A (en) 1927-01-07 1927-12-14 Improvements in or relating to telephone systems

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB2535/29A Expired GB304702A (en) 1927-01-07 1927-12-14 Improvements in or relating to telephone systems
GB33906/27A Expired GB283201A (en) 1927-01-07 1927-12-14 Improvements in or relating to telephone systems

Country Status (3)

Country Link
CH (1) CH136195A (en)
FR (1) FR667117A (en)
GB (3) GB294618A (en)

Also Published As

Publication number Publication date
GB304702A (en) 1929-03-14
CH136195A (en) 1929-10-31
FR667117A (en) 1929-10-12
GB283201A (en) 1929-03-14

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