US2447494A - Telephone register control system - Google Patents

Telephone register control system Download PDF

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Publication number
US2447494A
US2447494A US532141A US53214144A US2447494A US 2447494 A US2447494 A US 2447494A US 532141 A US532141 A US 532141A US 53214144 A US53214144 A US 53214144A US 2447494 A US2447494 A US 2447494A
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US
United States
Prior art keywords
register
selector
circuit
digit
brush
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 - Lifetime
Application number
US532141A
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English (en)
Inventor
Deakin Gerald
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
Priority to US532141A priority Critical patent/US2447494A/en
Priority to GB2088/45A priority patent/GB628528A/en
Priority to CH289854D priority patent/CH289854A/fr
Application granted granted Critical
Publication of US2447494A publication Critical patent/US2447494A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Definitions

  • This invention relates to new and useful improvements in register controlled telephone systems.
  • the object of the invention is to provide an arrangement in which an idle register controller is automatically connected with a link to which a line finder or other non-numerical switch has been started to connect a calling line.
  • the rst selector is operated simultaneously with the first digit switch of the register. 1f certain first digit or digits are dialled, e. g. if a local connection is desired, then the register is promptly detached, and the calling subscriber continues to control the establishment of the connection by directly operating the other selectors over the rst selector set by the register. If, however, the first digit indicates a different type of connection, e. g. an inter-office connection, then the first selector is released, and the register remains attached and controls the completion of the connection in accordance with the other impulses received from the calling subscriber.
  • certain first digit or digits are dialled, e. g. if a local connection is desired, then the register is promptly detached, and the calling subscriber continues to control the establishment of the connection by directly operating the other selectors over the rst selector set by the register. If, however, the first digit indicates a different type of connection, e. g. an inter-office connection, then the first
  • Fig. 1 is a block diagram showing the relationship of the other figures to one another and to the rest of an exchange
  • Fig. 2 the circuits of a Well-known line finder
  • S-links are connected in simple selector-register links, referred to herein as SR-links (Fig. 3), the purpose of which is to concentrate traflic upon groups of registers, thereby reducing the total number of registers to a minimum.
  • the register circuit is shown in Figs. 4, 4a and 4b.
  • the translator links are like the one shown in said application, Serial No. 521,160, filed February 5, 1944.
  • the registers and translating equipment may be added, so to speak, one first group level at a time, that is, while a register is picked up by every new call. It is immediately dropped after the dialing of the rst digit should it be unnecessary to translate the office prefix which was dialed to designate the first group level. To make this possible, the register operates lthe first group selector in parallel with the first digit switch. If translation is unnecessary, then the register drops off and dialing continues over the selected rst group level in the ordinary way. However, should translation be found necessary, then the rst group selector is restored to normal and the register takes full charge of the routing of the call.
  • PR(I) closes the circuit of RKR from ground on the B brush of PO, front RYR, back GVR, back GSR, front PR( win-ding lRKR, 10- cycle interrupter to battery.
  • the interrupter closes the circuit of RKR, the latter ⁇ operates and energizes the magnet PT of :the marker switch and of relay RJR.
  • RJR locks up over .the back contact of GVR and GSR and short-circuits PR( -i-) and the rectiiiers. PR(-I) releases but not before its front contact is short-circuited by RJR.
  • GVR operates slow releasing relay GSR.
  • GSR energizes PO and opens the high tension battery circuit which de-ionizes GV and releases GVR.
  • GVR releases GSR and when GSR breaks its front contact, PO goes to position 2.
  • the first group'selector may' pick up the second group selector or other trunk before or after PO goes .to position 2.
  • the second selector is held energized by lthe fundamental circuit loop which again includes PR(+) sinc-e RJR is not now energized.
  • PR(+) sinc-e RJR is not now energized.
  • the circuit of the B brush of PO is held open at the back contact of GSR, RKR cannot be operated and pulses therefore are not sent out.
  • .GSR breaks its front contact and makes its back contact
  • the circuit of relay RKR is again closed, this time over terminal 2, brush B of PO, and brush A, segment I/ II of D2.
  • GSR is made su-ci'ently slow releasing so as .to lallow ample .time for the change-over inthe step-by-step selector which normally takes place during the long closure of the line between the dialling of the digits.
  • the second, third or four-th series of pulses of the office prex are sent out in the same manner as .the rst series.
  • .the loliice prex consists of four selections.
  • ⁇ only RTRE is energized, the ofce prefix cons-ists of .three selections and when nei-ther of the relays is energized, the oili-ce prefix consists of only two selections.
  • PO goes to position 5 and the B brush of PO from now on -is grounded direct by brushes A of the digit switch D3 .to D6.
  • the four selections of the office number are made by the pulsing circuit in the same manner as ythe oliice prefix selection.
  • PO goes to position 9 and the lD brush of the SR-link is grounded lby the A brush of PO.
  • SBR (Fig. 3) of the S-link is energized which releases .SAR and RBR of the SR-link.
  • SAR connects the calling line through to .the Icompleted connection for ring- -ing or busy tone, as the case may be.
  • the SR- link is released when RBR breaks its front contact and rele-ases RAR.
  • the opening of the line circuit releases DR ('Fig. 4) which releases RIR which, in turn, releases XR and RCR, after which al1 switches and relays in the register return to normal.
  • RTRZ (Fig. 4b) is energized and, in turn, energizes RTRB (Fig. 4a), which locks up, RTRG transfers the release circuit over brush A of PO, from terminal 9 to terminal I0, whereby on a sevendigit call, the D brush of the SR-link is not grounded until after the seven dialed digits have been disposed of.
  • Out-tranlcz'ng to universal oice is done in the same manner as out-trunking to a step-by-step oce with this exception, that the trunk Wires to a universal oice are reversed until a T-register thereat is connected.
  • the initial trunk loop is closed through rectier S(-) (Fig. 4) and resistor R.
  • PR(+) is not energized until the distant T-register is connected, at which time current is reversed. From there on the register (Figs. 4-4b) operates as on a call to a step-by-step office.
  • the register Serial No. 521,160, filed February 5, 1944, is arranged for in-dialing to an automatic P. B. X.
  • the present register is not so arranged but such in-dialing may be done by waiting for the P. B. X dialing tone which follows after the A-register (Figs. 4-4b) is released.
  • the A-register Figs. 4-4b
  • a plurality of lines means including normally inactive non-numerical and numerical switches for connecting a calling with a called line, a link between said switches, a plurality of registers adapted to be set by calling lines for controlling the operation of the numerical switches, normally inactive switching means for connecting an idle register with a non-numerical and a numerical switch, and means operable upon the initiation of a call for substantially simultaneously starting a non-numerical switch andthe switching means to establish a connection between the calling line and a numerical switch and between an idle register and the last-mentioned connection.
  • a plurality of numerically designated lines means including a plurality of selectors for connecting a calling with a called line, a plurality of registers, each having a plurality of digit switches variably operable by digits of the called number dialed over the calling line, switching means for connecting an idle register with a calling line, means in the registers to connect the associated digit switches, one after 7 theI other', with'v successive: selectorsr .to controlf their setting, means for releasing the connectedy register after the setting of all the selectors, means in the register for simultaneously setting tlie rstselector with the rst digit switch, means operable in response to a'ilrst' digit ofi al certain numerical value for releasing the connected register upon the receipt of the rst digit from the calling line, and means operablethereupon' and controlled directly by the additional digitsdialed over the calling line for controlling the setting of 'the' otherselectors ⁇ over
  • a relay associated With the rst selector has contacts for connecting the calling line with the first selector and contacts for connecting the register with the iirst selector', and a circuit for said relay controlled by: the connected register.

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)
US532141A 1944-04-21 1944-04-21 Telephone register control system Expired - Lifetime US2447494A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US532141A US2447494A (en) 1944-04-21 1944-04-21 Telephone register control system
GB2088/45A GB628528A (en) 1944-04-21 1945-01-26 Automatic telephone systems
CH289854D CH289854A (fr) 1944-04-21 1947-02-21 Installation téléphonique automatique.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US532141A US2447494A (en) 1944-04-21 1944-04-21 Telephone register control system

Publications (1)

Publication Number Publication Date
US2447494A true US2447494A (en) 1948-08-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
US532141A Expired - Lifetime US2447494A (en) 1944-04-21 1944-04-21 Telephone register control system

Country Status (3)

Country Link
US (1) US2447494A (fr)
CH (1) CH289854A (fr)
GB (1) GB628528A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588685A (en) * 1939-07-26 1952-03-11 Automatic Elect Lab Register-sender for automatic telephony
US2604539A (en) * 1948-04-05 1952-07-22 Standard Telephones Cables Ltd Automatic telephone switching system
US2629016A (en) * 1942-06-27 1953-02-17 Bell Telephone Labor Inc Automatic toll-ticketing system
US2633496A (en) * 1948-04-05 1953-03-31 Standard Telephones Cables Ltd Party-line telephone system
US2774818A (en) * 1950-01-27 1956-12-18 Heron Kenneth Maicolm Electronic register translator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1567072A (en) * 1924-10-16 1925-12-29 Western Electric Co Telephone-exchange system
US1708949A (en) * 1926-11-29 1929-04-16 Western Electric Co Telephone system
US1854106A (en) * 1922-12-22 1932-04-12 Western Electric Co Automatic telephone system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1854106A (en) * 1922-12-22 1932-04-12 Western Electric Co Automatic telephone system
US1567072A (en) * 1924-10-16 1925-12-29 Western Electric Co Telephone-exchange system
US1708949A (en) * 1926-11-29 1929-04-16 Western Electric Co Telephone system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588685A (en) * 1939-07-26 1952-03-11 Automatic Elect Lab Register-sender for automatic telephony
US2629016A (en) * 1942-06-27 1953-02-17 Bell Telephone Labor Inc Automatic toll-ticketing system
US2604539A (en) * 1948-04-05 1952-07-22 Standard Telephones Cables Ltd Automatic telephone switching system
US2633496A (en) * 1948-04-05 1953-03-31 Standard Telephones Cables Ltd Party-line telephone system
US2774818A (en) * 1950-01-27 1956-12-18 Heron Kenneth Maicolm Electronic register translator

Also Published As

Publication number Publication date
CH289854A (fr) 1953-03-31
GB628528A (en) 1949-08-31

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