GB710161A - Improvements in or relating to automatic telephone systems - Google Patents

Improvements in or relating to automatic telephone systems

Info

Publication number
GB710161A
GB710161A GB4751/52A GB475152A GB710161A GB 710161 A GB710161 A GB 710161A GB 4751/52 A GB4751/52 A GB 4751/52A GB 475152 A GB475152 A GB 475152A GB 710161 A GB710161 A GB 710161A
Authority
GB
United Kingdom
Prior art keywords
relay
relays
switching centre
operating
exchange
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
GB4751/52A
Other languages
English (en)
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB710161A publication Critical patent/GB710161A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
GB4751/52A 1951-02-23 1952-02-22 Improvements in or relating to automatic telephone systems Expired GB710161A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE326022X 1951-02-23

Publications (1)

Publication Number Publication Date
GB710161A true GB710161A (en) 1954-06-09

Family

ID=20307957

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4751/52A Expired GB710161A (en) 1951-02-23 1952-02-22 Improvements in or relating to automatic telephone systems

Country Status (6)

Country Link
US (1) US2837602A ( )
BE (1) BE509371A ( )
CH (1) CH326022A ( )
DE (1) DE903594C ( )
FR (1) FR1058866A ( )
GB (1) GB710161A ( )

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE561159A ( ) * 1956-09-28
GB863627A (en) * 1958-06-06 1961-03-22 Gen Electric Co Ltd Improvements in or relating to automatic telephone systems
NL257816A ( ) * 1959-11-12
US3115550A (en) * 1960-07-22 1963-12-24 Bell Telephone Labor Inc Distributed line concentrator system
US3133156A (en) * 1960-10-31 1964-05-12 Bell Telephone Labor Inc Telephone line concentrator
NL286845A ( ) * 1961-03-03
US4791198A (en) * 1984-07-05 1988-12-13 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Beta-lactam compound and preparation thereof
CN110838956A (zh) * 2019-11-26 2020-02-25 苏州裕太车通电子科技有限公司 一种以太网通信距离的自动化测试装置及测试方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB516413A (en) * 1938-06-14 1940-01-01 Ass Telephone & Telegraph Co Improvements in or relating to automatic or semi-automatic telephone systems
GB529025A (en) * 1939-05-05 1940-11-12 Automatic Telephone & Elect Improvements in or relating to telephone systems
US2629016A (en) * 1942-06-27 1953-02-17 Bell Telephone Labor Inc Automatic toll-ticketing system
US2618708A (en) * 1942-08-06 1952-11-18 Automatic Elect Lab Telephone system with main and secondary register
US2588052A (en) * 1943-05-05 1952-03-04 American Telephone & Telegraph Control circuit for telephone systems
US2532097A (en) * 1946-12-31 1950-11-28 Bell Telephone Labor Inc Decentralized line switch arrangement

Also Published As

Publication number Publication date
FR1058866A (fr) 1954-03-19
DE903594C (de) 1954-02-08
BE509371A ( )
US2837602A (en) 1958-06-03
CH326022A (de) 1957-11-30

Similar Documents

Publication Publication Date Title
GB710161A (en) Improvements in or relating to automatic telephone systems
US2201573A (en) Telephone system
GB683881A (en) An automatic telephone or telegraph system
GB698848A (en) Improvements in or relating to private automatic branch telephone exchanges
US2511145A (en) Operator register-sender controlled telephone switching system
Carbaugh et al. No. 1 ESS call processing
US2583848A (en) Switching device for the setting of crossbar switches by means of markers
GB731779A (en) Multi-group primary-secondary-spread crossbar telephone system
US2504274A (en) System for automatic telephone exchanges with crossbar switches and private branch exchange trunk lines
GB617932A (en) Improvements in telephone switching systems
US2706749A (en) Testing small private branch exchange trunk groups
US2718556A (en) Device for connection of tandem operators in automatic telephone exchanges
US3389229A (en) Telephone subscriber line concentrating system
US3599235A (en) Route selecting system in a telephone exchange
GB786821A (en) Circuit arrangements for markers in exchange systems, particularly telephone systems
US2300618A (en) Branch exchange
GB768093A (en) Automatic telephone system comprising electronic control equipments
US3534174A (en) Analyzer for automatic telephone exchanges
US2864890A (en) Auto-selecting cross-bar telephone system
US2718557A (en) Auxiliary-service telephone system
US3129291A (en) Remote distributed telephone line concentrator
US3231684A (en) Control register for a multi-exchange telephone system
US2261485A (en) Telephone system
US3211835A (en) Automatic telecommunication system
US1827734A (en) Telephone system