GB1142740A - Automatic telephone exchange - Google Patents

Automatic telephone exchange

Info

Publication number
GB1142740A
GB1142740A GB4653967A GB4653967A GB1142740A GB 1142740 A GB1142740 A GB 1142740A GB 4653967 A GB4653967 A GB 4653967A GB 4653967 A GB4653967 A GB 4653967A GB 1142740 A GB1142740 A GB 1142740A
Authority
GB
United Kingdom
Prior art keywords
code
call
oct
special
subscribers
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
GB4653967A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1142740A publication Critical patent/GB1142740A/en
Expired legal-status Critical Current

Links

Classifications

    • 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)
  • Telephonic Communication Services (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
GB4653967A 1951-01-28 1967-10-12 Automatic telephone exchange Expired GB1142740A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19511487997 DE1487997A1 (de) 1951-01-28 1951-01-28 Verfahren zum Fangen von Verbindungen in Fernmelde-,insbesondere Fernsprechanlagen mit tonfrequenter Zeichengabe
DEST025982 1966-10-14

Publications (1)

Publication Number Publication Date
GB1142740A true GB1142740A (en) 1969-02-12

Family

ID=25752339

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4653967A Expired GB1142740A (en) 1951-01-28 1967-10-12 Automatic telephone exchange

Country Status (3)

Country Link
AT (1) AT297804B (de)
DE (1) DE1487997A1 (de)
GB (1) GB1142740A (de)

Also Published As

Publication number Publication date
DE1487997B2 (de) 1974-05-30
DE1487997A1 (de) 1969-05-14
AT297804B (de) 1972-04-10

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