GB710203A - Automatic communication system including directly-controlled and register-controlledco-operating exchanges - Google Patents

Automatic communication system including directly-controlled and register-controlledco-operating exchanges

Info

Publication number
GB710203A
GB710203A GB3617/52A GB361752A GB710203A GB 710203 A GB710203 A GB 710203A GB 3617/52 A GB3617/52 A GB 3617/52A GB 361752 A GB361752 A GB 361752A GB 710203 A GB710203 A GB 710203A
Authority
GB
United Kingdom
Prior art keywords
relay
selector
register
operates
incoming
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
GB3617/52A
Inventor
Roelof Maarten Marie Oberman
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.)
Nederlanden Staat
Original Assignee
Nederlanden Staat
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 Nederlanden Staat filed Critical Nederlanden Staat
Publication of GB710203A publication Critical patent/GB710203A/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)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

710,203. Automatic exchange systems. STAATSBEDRIJF DER POSTERIJEN, TELEGRAFIE EN TELEFONIE. Feb, 11, 1952 [Feb. 19, 1951], No. 3617/52. Class 40 (4) A calling incoming circuit EER1 first causes an associated group selector EESS to hunt for a free register which then operates an associated finder F to search for the incoming circuits. During the hunting of F incoming digits are received by the register over selector EESS and subsequently they are received over F the group selector EESS then being freed for setting in the wanted direction EER2 under control of the register. The invention is intended for use in register .- controlled exchanges which receive calls from directly controlled exchanges so that rapid connection to a register-controller is essential. On receipt of an incoming call relay U operates and energizes the drive magnet DMEESS of the selector. When a free register is found test relay T in the selector. operates in series with relay R in the register. Relay R disconnects resistance W, from the circuit to busy it and brings up AA. Relay T stops the selector and operates P which connects the a and b wires over EESS to the digit receiver IR in the register. Relay R energizes the drive magnet DMF of the finder F. The register connects a characteristic potential determined by the potentiometer W2, W3 over the e wiper of EESS to the e-bank contact of F and this potential is also connected over the sequence switch SSB (position 1) by the potentiometer W4, W5 to the voltage-comparison device NW. When this potential is encountered by the e-wiper of F the device NW operates TT to stop the switch. TT also connects up a d.c. testing device GR which if successful operates GT. The latter brings up BB in series with AA. Relay BB connects the digit receiving device IR to the incoming a and b wires over wipers h, g of F. and releases TT. Relay GT follows and steps sequence switch SSB to position 2. Relay GT also brings up relay A in the selector. Relay A releases P which disconnects the incoming wires from the selector. Relay A also releases T. From the digits received by IR switches MS, ... MS4 are set, and bank MS1 connects potential from potentiometer W7, W8 to the device NW indicative of the wanted outgoing direction. When TT releases the selector drive magnet circuit is again made and the selector hunts for a free outlet having the required characteristic potential as determined by the potentiometer W8, W9. When such an outlet is found the potential comparing device NW operates TT to stop the switch, and GT operates to the d.c. test thereby bringing relay B up in series with A in the selector. Relay P then operates to switch through the incoming circuit via the selector to the outgoing trunk EESS.
GB3617/52A 1951-02-19 1952-02-11 Automatic communication system including directly-controlled and register-controlledco-operating exchanges Expired GB710203A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL314169X 1951-02-19

Publications (1)

Publication Number Publication Date
GB710203A true GB710203A (en) 1954-06-09

Family

ID=19783749

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3617/52A Expired GB710203A (en) 1951-02-19 1952-02-11 Automatic communication system including directly-controlled and register-controlledco-operating exchanges

Country Status (6)

Country Link
BE (1) BE509055A (en)
CH (1) CH314169A (en)
DE (1) DE936273C (en)
FR (1) FR1058853A (en)
GB (1) GB710203A (en)
NL (2) NL87360C (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE322105C (en) * 1912-09-27 1920-06-22 Western Electric Co Ltd Circuit arrangement for telephone systems, in which calling lines are connected to connecting circuits by means of automatic switching mechanisms
GB333259A (en) * 1929-05-14 1930-08-14 Gerald Deakin Improvements in or relating to automatic and semi-automatic telephone exchange systems

Also Published As

Publication number Publication date
NL87360C (en)
NL159336B (en)
BE509055A (en)
DE936273C (en) 1955-12-07
CH314169A (en) 1956-05-31
FR1058853A (en) 1954-03-19

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