GB798803A - Improvements in or relating to automatic telephone exchanges providing automatic transfer service - Google Patents

Improvements in or relating to automatic telephone exchanges providing automatic transfer service

Info

Publication number
GB798803A
GB798803A GB22555/56A GB2255556A GB798803A GB 798803 A GB798803 A GB 798803A GB 22555/56 A GB22555/56 A GB 22555/56A GB 2255556 A GB2255556 A GB 2255556A GB 798803 A GB798803 A GB 798803A
Authority
GB
United Kingdom
Prior art keywords
relating
transfer service
automatic
telephone exchanges
automatic transfer
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
GB22555/56A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB798803A publication Critical patent/GB798803A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/54—Arrangements for diverting calls for one subscriber to another predetermined subscriber
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages
    • 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)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

798,803. Automatic exchange systems. TELEFONAKTIEBOLAGET L. M. ERICSSON. July 20, 1956 [July 20, 1955], No. 22555/56. Addition to 798,749. Drawings to Specification. Class 40 (4). In the system described in the parent Specification, facilities are provided for making calls to a station from which calls are normally diverted. In the main register, a further relay is provided to respond to the prefix 08. When operated, the relay disables the transfer circuit and the call proceeds normally.
GB22555/56A 1954-03-27 1956-07-20 Improvements in or relating to automatic telephone exchanges providing automatic transfer service Expired GB798803A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE336874X 1954-03-27
SE349648X 1955-07-20

Publications (1)

Publication Number Publication Date
GB798803A true GB798803A (en) 1958-07-30

Family

ID=32965056

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22555/56A Expired GB798803A (en) 1954-03-27 1956-07-20 Improvements in or relating to automatic telephone exchanges providing automatic transfer service

Country Status (5)

Country Link
BE (1) BE549011A (en)
CH (1) CH349648A (en)
DE (1) DE1014601B (en)
FR (1) FR70367E (en)
GB (1) GB798803A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2013914A1 (en) * 2006-04-28 2009-01-14 Alessandro Chiorlin Support device for photovoltaic panels intended for installations for the production of electrical energy

Also Published As

Publication number Publication date
BE549011A (en) 1959-11-20
DE1014601B (en) 1957-08-29
CH349648A (en) 1960-10-31
FR70367E (en) 1959-04-06

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