GB296424A - Circuit arrangement for double duty selectors in telephone installations - Google Patents

Circuit arrangement for double duty selectors in telephone installations

Info

Publication number
GB296424A
GB296424A GB810128A GB810128A GB296424A GB 296424 A GB296424 A GB 296424A GB 810128 A GB810128 A GB 810128A GB 810128 A GB810128 A GB 810128A GB 296424 A GB296424 A GB 296424A
Authority
GB
United Kingdom
Prior art keywords
selectors
circuit arrangement
double duty
switch
telephone installations
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
GB810128A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB296424A publication Critical patent/GB296424A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

296,424. Siemens & Halske Akt.- Ges. Sept. 1, 1927, [Convention date]. Drawings to Specification. Automatic exchange systems. - In a switch which acts as a finder for outgoing calls and as a numerical switch for incoming calls, the relay which stops the switch as a finder is also energized on incoming calls when the subscriber answers, and in both cases acts indirectly as a switching relay. The system described is the same as in Specification 296,363.
GB810128A 1927-09-01 1928-03-16 Circuit arrangement for double duty selectors in telephone installations Expired GB296424A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES81468D DE627519C (en) 1927-09-01 1927-09-01 Circuit arrangement for double service dialers in automatic or semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
GB296424A true GB296424A (en) 1929-02-21

Family

ID=7509631

Family Applications (1)

Application Number Title Priority Date Filing Date
GB810128A Expired GB296424A (en) 1927-09-01 1928-03-16 Circuit arrangement for double duty selectors in telephone installations

Country Status (3)

Country Link
DE (1) DE627519C (en)
FR (1) FR652936A (en)
GB (1) GB296424A (en)

Also Published As

Publication number Publication date
FR652936A (en) 1929-03-13
DE627519C (en) 1936-03-17

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