GB654092A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB654092A
GB654092A GB5091/48A GB509148A GB654092A GB 654092 A GB654092 A GB 654092A GB 5091/48 A GB5091/48 A GB 5091/48A GB 509148 A GB509148 A GB 509148A GB 654092 A GB654092 A GB 654092A
Authority
GB
United Kingdom
Prior art keywords
operator
trunk
call
delay
relay
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
GB5091/48A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB654092A publication Critical patent/GB654092A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Paper (AREA)
GB5091/48A 1944-08-18 1948-02-20 Improvements in or relating to telephone systems Expired GB654092A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US550070A US2382893A (en) 1944-08-18 1944-08-18 Telephone system

Publications (1)

Publication Number Publication Date
GB654092A true GB654092A (en) 1951-06-06

Family

ID=24195617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5091/48A Expired GB654092A (en) 1944-08-18 1948-02-20 Improvements in or relating to telephone systems

Country Status (4)

Country Link
US (1) US2382893A (es)
FR (1) FR960189A (es)
GB (1) GB654092A (es)
NL (1) NL72500C (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE476048A (es) * 1946-03-09
GB680607A (en) * 1947-07-10 1952-10-08 Automatic Elect Lab Toll switching telephone system
US2550755A (en) * 1947-09-24 1951-05-01 Automatic Elect Lab Toll switching telephone system

Also Published As

Publication number Publication date
US2382893A (en) 1945-08-14
NL72500C (es) 1953-06-15
FR960189A (es) 1950-04-14

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