GB688413A - Improvements in or relating to telephone switching systems - Google Patents

Improvements in or relating to telephone switching systems

Info

Publication number
GB688413A
GB688413A GB22190/50A GB2219050A GB688413A GB 688413 A GB688413 A GB 688413A GB 22190/50 A GB22190/50 A GB 22190/50A GB 2219050 A GB2219050 A GB 2219050A GB 688413 A GB688413 A GB 688413A
Authority
GB
United Kingdom
Prior art keywords
subscriber
line
circuit
exchange
trunk
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
GB22190/50A
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 GB688413A publication Critical patent/GB688413A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
    • H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
GB22190/50A 1949-09-10 1950-09-08 Improvements in or relating to telephone switching systems Expired GB688413A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US688413XA 1949-09-10 1949-09-10

Publications (1)

Publication Number Publication Date
GB688413A true GB688413A (en) 1953-03-04

Family

ID=22085056

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22190/50A Expired GB688413A (en) 1949-09-10 1950-09-08 Improvements in or relating to telephone switching systems

Country Status (4)

Country Link
BE (1) BE498166A (sv)
FR (1) FR1026140A (sv)
GB (1) GB688413A (sv)
NL (2) NL88581C (sv)

Also Published As

Publication number Publication date
BE498166A (sv)
FR1026140A (fr) 1953-04-23
NL155957B (nl)
NL88581C (sv)

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