GB529448A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB529448A
GB529448A GB15010/39A GB1501039A GB529448A GB 529448 A GB529448 A GB 529448A GB 15010/39 A GB15010/39 A GB 15010/39A GB 1501039 A GB1501039 A GB 1501039A GB 529448 A GB529448 A GB 529448A
Authority
GB
United Kingdom
Prior art keywords
relay
switch
digits
thousands
magnet
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
GB15010/39A
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co 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 BE464869D priority Critical patent/BE464869A/xx
Application filed by Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Priority to GB15010/39A priority patent/GB529448A/en
Priority to US329609A priority patent/US2289528A/en
Publication of GB529448A publication Critical patent/GB529448A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • 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)
  • Interface Circuits In Exchanges (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

529,448. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., TAYLOR, R., and BAKER, G. T. May 19, 1939, No. 15010. [Class 40 (iv)] In a non-register-translator system in which two or more satellites each of which includes several thousands of lines share a ten thousands digit, the number of digits dialled is kept to the minimum without running separate junction groups from the main exchange for each of the thousands in the satellites by providing a discriminator set DRS, Fig. 2, which switches the call to the proper satellite in accordance with the thousands digit and subsequently, with the help of an impulse regenerator of the type described in Specification 458,095, sends that and subsequent digits thereto. Metering in accordance with the junction selected is controlled from the discriminator set. Circuit arrangements. Line relay A repeats the thousands digit to magnet JHM of switch JH and to receiving magnet RM of the regenerator. At the end of the digit, dialling relay C releases marking magnet MM which it previously engaged and ON pulls up and locks. At the same time a circuit is made over the discriminating wipers 8 of switch JH whereby HA pulls up with or without the wiper changing relay HB and the switch is sent home. The removal of a short circuit over wiper JH7 now allows JHR to pull up and lock whereupon JH hunts like a line switch under control of K. The latter in addition to switching through energizes the regenerator sending magnet SM and releases P to initiate the sending of the first of the stored digits. IP pulls up on the relapse of P to ensure a pause between digits. When all the digits have been sent ON is released and extends the junction back to the supervisory relays I, D. The distant line relays are held during the switch-over by resistance YB. According to the Provisional Specification discrimination may be controlled by a separate counting chain instead of by a numerical operation of JH. If an unobtainable thousands digit is dialled relay NB is operated over JH8 and sends back NU tone. If the switch JH finds all trunks busy NB is operated over JH5 or JH6 and since HA is operated sends back busy tone. Metering. On the response of supervisory relay D, S and Z relays DA, DB connect metering relay MP to the appropriate pulse lead 11 or 12 for a cycle.
GB15010/39A 1939-05-19 1939-05-19 Improvements in or relating to telephone systems Expired GB529448A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE464869D BE464869A (en) 1939-05-19
GB15010/39A GB529448A (en) 1939-05-19 1939-05-19 Improvements in or relating to telephone systems
US329609A US2289528A (en) 1939-05-19 1940-04-15 Telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15010/39A GB529448A (en) 1939-05-19 1939-05-19 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
GB529448A true GB529448A (en) 1940-11-21

Family

ID=10051469

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15010/39A Expired GB529448A (en) 1939-05-19 1939-05-19 Improvements in or relating to telephone systems

Country Status (3)

Country Link
US (1) US2289528A (en)
BE (1) BE464869A (en)
GB (1) GB529448A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB759693A (en) * 1951-02-16 1956-10-24 Gen Electric Co Ltd Improvements in or relating to automatic telephone systems

Also Published As

Publication number Publication date
US2289528A (en) 1942-07-14
BE464869A (en)

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