GB701738A - Improvements in or relating to telecommunication exchange systems - Google Patents

Improvements in or relating to telecommunication exchange systems

Info

Publication number
GB701738A
GB701738A GB24845/52A GB2484552A GB701738A GB 701738 A GB701738 A GB 701738A GB 24845/52 A GB24845/52 A GB 24845/52A GB 2484552 A GB2484552 A GB 2484552A GB 701738 A GB701738 A GB 701738A
Authority
GB
United Kingdom
Prior art keywords
test signal
test
exchange systems
relating
selector
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
GB24845/52A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB701738A publication Critical patent/GB701738A/en
Expired legal-status Critical Current

Links

Classifications

    • 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)
  • Electrotherapy Devices (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
GB24845/52A 1949-06-21 1950-05-05 Improvements in or relating to telecommunication exchange systems Expired GB701738A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR844751X 1949-06-21

Publications (1)

Publication Number Publication Date
GB701738A true GB701738A (en) 1953-12-30

Family

ID=9312527

Family Applications (2)

Application Number Title Priority Date Filing Date
GB24845/52A Expired GB701738A (en) 1949-06-21 1950-05-05 Improvements in or relating to telecommunication exchange systems
GB11162/50A Expired GB701687A (en) 1949-06-21 1950-05-05 Electrical test equipment for use in telecommunication exchange systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB11162/50A Expired GB701687A (en) 1949-06-21 1950-05-05 Electrical test equipment for use in telecommunication exchange systems

Country Status (7)

Country Link
US (1) US2686839A (en:Method)
BE (1) BE496495A (en:Method)
CH (2) CH293315A (en:Method)
DE (1) DE844751C (en:Method)
FR (1) FR1012159A (en:Method)
GB (2) GB701738A (en:Method)
NL (4) NL154348B (en:Method)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2960575A (en) * 1952-04-10 1960-11-15 Int Standard Electric Corp Automatic telecommunication systems
US2725428A (en) * 1953-01-06 1955-11-29 Itt Multi-group primary-secondary-spread crossbar telephone system
NL108191C (en:Method) * 1953-01-12
USD320798S (en) 1990-04-23 1991-10-15 Holt Richard A Earring clearance telephone handset earpiece or similar article

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL78385C (en:Method) * 1946-06-20
US2619548A (en) * 1948-05-15 1952-11-25 Int Standard Electric Corp Electronic switching apparatus for telephone systems
US2583711A (en) * 1949-03-29 1952-01-29 Scowen
BE496069A (en:Method) * 1949-06-02

Also Published As

Publication number Publication date
NL94324C (en:Method)
NL154348B (nl)
NL86149C (en:Method)
CH320151A (fr) 1957-03-15
GB701687A (en) 1953-12-30
US2686839A (en) 1954-08-17
FR1012159A (fr) 1952-07-07
CH293315A (fr) 1953-09-15
BE496495A (en:Method)
NL216340A (en:Method)
DE844751C (de) 1952-07-28

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