GB989337A - Improvements relating to automatic telephone exchange systems - Google Patents

Improvements relating to automatic telephone exchange systems

Info

Publication number
GB989337A
GB989337A GB3620161A GB3620161A GB989337A GB 989337 A GB989337 A GB 989337A GB 3620161 A GB3620161 A GB 3620161A GB 3620161 A GB3620161 A GB 3620161A GB 989337 A GB989337 A GB 989337A
Authority
GB
United Kingdom
Prior art keywords
switches
rank
magnets
switch
horizontals
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
GB3620161A
Inventor
Bloomfield James Warman
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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
Priority to NL284083D priority Critical patent/NL284083A/xx
Priority to BE623364D priority patent/BE623364A/xx
Application filed by Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB3620161A priority patent/GB989337A/en
Priority to DEA41334A priority patent/DE1173952B/en
Publication of GB989337A publication Critical patent/GB989337A/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)
  • Structure Of Telephone Exchanges (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

989,337. Automatic exchange systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 27, 1962 [Oct. 9, 1961], No. 36201/61. Heading H4K. In an exchange system having cross-bar switches arranged in ranks A, B, C, each rank containing a plurality of switches, the connection is established by operating, in each rank, corresponding select magnets of all switches of that rank and operating the hold magnet of the last switch to extend over the operated cross-point an operating circuit for the hold magnet of the previous switch and so on. The circuit shown relates to a system in which the switches of ranks B and C have both horizontal and vertical multiples, but the switches of rank A have only vertical multiples, the individual 10 x 10 contacts being connected respectively to 100 subscribers. The verticals of each switch are connected to horizontals of the succeeding switches and the horizontals of rank C switches are connected to feed-bridge circuits. The verticals are associated with hold magnets and the horizontals with select magnets. To effect a connection over switches A2, B2, C6 to a feed-bridge circuit, in each rank corresponding select magnets for all switches are operated. Thus select magnets A1/S1 (not shown), A2/S1 ..., B1/S10 (not shown), B2/S10 ... and C1/S9 (not shown ... C6/S9 are all operated. Earth applied to lead C6/V1/W energizes H1 to operate the crosspoint CP1/9 which reverts earth from the hold magnet contact to operate hold magnet B2/H6 of the preceding switch and so on. All the select magnets are then released. The arrangements is suitable for a sectionalized exchange of the type described in Specification 989,336.
GB3620161A 1961-10-09 1961-10-09 Improvements relating to automatic telephone exchange systems Expired GB989337A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL284083D NL284083A (en) 1961-10-09
BE623364D BE623364A (en) 1961-10-09
GB3620161A GB989337A (en) 1961-10-09 1961-10-09 Improvements relating to automatic telephone exchange systems
DEA41334A DE1173952B (en) 1961-10-09 1962-10-08 Circuit arrangement for telecommunications, in particular telephone switching systems with dialing operations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3620161A GB989337A (en) 1961-10-09 1961-10-09 Improvements relating to automatic telephone exchange systems

Publications (1)

Publication Number Publication Date
GB989337A true GB989337A (en) 1965-04-14

Family

ID=10385901

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3620161A Expired GB989337A (en) 1961-10-09 1961-10-09 Improvements relating to automatic telephone exchange systems

Country Status (4)

Country Link
BE (1) BE623364A (en)
DE (1) DE1173952B (en)
GB (1) GB989337A (en)
NL (1) NL284083A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1262360B (en) * 1965-08-14 1968-03-07 Standard Elektrik Lorenz Ag Method and circuit arrangement for controlling a multi-stage coupling arrangement in telecommunications, in particular telephone switching systems

Also Published As

Publication number Publication date
DE1173952B (en) 1964-07-16
BE623364A (en)
NL284083A (en)

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