GB642455A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB642455A
GB642455A GB6072/48A GB607248A GB642455A GB 642455 A GB642455 A GB 642455A GB 6072/48 A GB6072/48 A GB 6072/48A GB 607248 A GB607248 A GB 607248A GB 642455 A GB642455 A GB 642455A
Authority
GB
United Kingdom
Prior art keywords
incoming
outgoing
marker
trunk
trunks
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
GB6072/48A
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 GB642455A publication Critical patent/GB642455A/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)
  • Exchange Systems With Centralized Control (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
GB6072/48A 1939-09-15 1948-02-27 Improvements in or relating to telephone systems Expired GB642455A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US295010A US2236246A (en) 1939-09-15 1939-09-15 Telephone system

Publications (1)

Publication Number Publication Date
GB642455A true GB642455A (en) 1950-09-06

Family

ID=23135844

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6072/48A Expired GB642455A (en) 1939-09-15 1948-02-27 Improvements in or relating to telephone systems

Country Status (4)

Country Link
US (1) US2236246A (no)
FR (1) FR963427A (no)
GB (1) GB642455A (no)
NL (1) NL69497C (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450516A (en) * 1944-01-11 1948-10-05 Bell Telephone Labor Inc Telemetric data transmission system
US2674657A (en) * 1949-04-04 1954-04-06 Itt Primary-secondary-spread crossbar telephone system
US3023281A (en) * 1959-05-21 1962-02-27 Gen Dynamics Corp Electronic switching system

Also Published As

Publication number Publication date
US2236246A (en) 1941-03-25
FR963427A (no) 1950-07-10
NL69497C (no)

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