US1835893A - Call metering in telephone systems - Google Patents

Call metering in telephone systems Download PDF

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Publication number
US1835893A
US1835893A US462104A US46210430A US1835893A US 1835893 A US1835893 A US 1835893A US 462104 A US462104 A US 462104A US 46210430 A US46210430 A US 46210430A US 1835893 A US1835893 A US 1835893A
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United States
Prior art keywords
impulse
impulses
call
sender
meter
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Expired - Lifetime
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US462104A
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English (en)
Inventor
Nilsson Nils Emil
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
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Telefonaktiebolaget LM Ericsson AB
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Publication of US1835893A publication Critical patent/US1835893A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/10—Metering calls from calling party, i.e. A-party charged for the communication

Definitions

  • the present invention relates to a call me over certain junction lines-by way of exampie trunk lines connecting difierent telephone exchangesare sub ect-ed to a special charge, which is reglstered on the call meter through the intermedinm of impulse senders, which are adapted to actuate the call meter in accordance with thefor in force for the connection in question. Further the invention relates to certain arrangements for transmitting the call meter impulses over they talking connection and for actuating the im pulse senders connected to the talking connection, so that said impulse sender'smay be successively started to send out current impulses to thecall meter. v
  • each impulse sender with appertaining impulse repeating device forms an impulse sender set, which prefer ably is common to a plurality of junction lines, and which, when the junctionline is used, is automatically connected to the junction line. If desired, each unction line may be providenwith such an'impulsesender set.
  • Said wires include relays R R R Ri, R
  • the call inetering operation is started by'a-n interrupter PS,'disposed, by Way of example, at'the last selector of the talking connection, which interrupter starts the impulse sender TS by means of a currentimpulsef Said-impulse sender then sends out a number of call'met er impulses corresponding "to the appertaining junction line; whichiimpulses a e transmitted and repeated by the impulse repeating device 1R of'the other impulse sender set.
  • Theinr pulse sender" TSi then starts the impulse sender TS which in turn sends out-a number of call 'lneter impulses corresponding to the appertaining junction line, "which call meter impulses aretransmitted'to thecall meter.
  • the impulse sender sctsshallthus be able torepeat the current impulses sent out from another impulse sender? set a and "shall also be able to startanother impulse sender set such a way,"that foreach time interval'all the impulse sender s'etsconnected to the talk-' ing connection aresuccessively, brought into operation and sen'd' fou't their. series of im' pulses, which, will thus actuate the call meter in sucha wayft-hat thesum of thecliarges for the different junction lines is registered; As
  • the arrangement according tothe invention is such, that the call meter and the impulse sender are'a'ctuated by current impulses-of different jkinds,
  • the call meter may be adapted to be actuated by both kinds of impulses, in whichcase the last call meter impulse sent out by one impulse sender at the same time can start the next impulse sender.
  • the drawing shows an embodiment of this kind.
  • theimpulse-sender aswell' as the appertainingrepeating device is formed as an electromagnetic stepping mechanism provided with rotating cams or the like, which control the sending out ofimpulses.
  • the impulse sender is driven by means of anelectromagnet SM, which through the intermedium of a stepping mechanism, which is not shown on the drawing, can impart a step-wise rotating motion to a shaft.
  • a control disc KS and also animpulse disc SS are attached to this shaft.
  • the first mentioned disc'isadapt- ,edto actuate a contact spring K which con nects the drivingmagnet SM into an impulse circuitas soonas the impulse sender is.
  • the impulse disc SS actuates a contact springK by means of which impulses for actuating the callmeter and for starting the next impulse-sender are sent out.
  • the impulserepeating device TB is intended to repeat the call meter impulses and to serve as an intermedium for starting the appertaining impulse sender. For this purpose it is designed as a time relay in such a way,.that theimpulse, sender is started only when the impulse repeating device is actuatedyby a current impulse of shorter durationtha-n theimetergimpulses.
  • the impulse repeatin device is provided with a driving magnet 3M,which by means of an'armature SA and.a;driving pawl DH isrotata-bly connected to the former. and can impart a stepwise rotating motion to a toothed wheel SH;
  • Thedrivingpawl DH is-by means of a spring normally held in ,an inoperative position, but is.
  • the magnetrAM is ,thenconnectedinto a circuit co-m prisinganinterrupter PS, .the wheel SH being thus made to rotate.
  • the magnet RM on the other hand remains permanently energized.
  • the magnet AM then continues to move the wheelSl-l forwards until a pin S, disposed on said wheel, engages and closes contacts 3 and 4 respectively, when the magnet SM of the impulse sender is connected into an impulse circuit including an interrupter PS,
  • the magnet SM then attracts its armature and thereafter receives current over the contact spring K, until the shaft of the impulse sender has rotated one revolution, when the contact spring K interrupts the circuit for the magnet SM. Meanwhile the current impulse, which started the impulse repeating device, has ceased through interruption of the contacts 1 and 2 respec tively. l/Vhen on account of this the magnets RM and AH are deenergized, the
  • Said short-circuit is, however, of such a short duratiomtha-t it cannot start the impulse sender 1S
  • the impulse repeating device IE is actuated by closing the contact 2;
  • the relay R is then short-circuited over the contact springs K K. of said impulse repeating device.
  • the relay R drops its armature the call meter SR receives a current impulse over the contact 6 whereby the first charge. is registered. Meanwhile the impulse repeatingdevice TR has continued to operate.
  • the impulse repeating device IE is restored to its normal position. which restoration takes place before the impulse sender 1S is started.
  • the number of saidteeth corresponds tothe tion.
  • the impulse sender is provided with 3 teeth, the last of which is so wide, that it brings about a shortcircuit of the relay R of long duration and thus starts the impulse sender IS
  • the first two teeth generate only impulses of short duration, which in the manner described above are repeated by the impulse repeating device IE and are registered by the call meter SE.
  • the third tooth at first brings about a short-circuit of the relay R of short duration over the contact springs K K and then starts the impulse sender 15 which then in turn sends out a number of impulses corresponding to the junction line in question, in the shown eX- ample three impulses, which short-circuit the relay R and are thereby registered by the call meter.
  • the impulse repeating devices are arranged in such a way, that they at the same time are able to transform the one kind of current impulses to the other kind of current impulses, that means, a current impulse of long duration to a current impulse of short duration. Said arrangement is required to prevent that a current impulse of long duration, at the same time as it is transmitted to the call meter, shell be able simultaneously to start all the impulse senders connected to the talking connection.
  • the impulse of long duration sent out from the interrupter TS is thus transmitted to the call meter SR first after it has been transformed to an impulse of short duration by means of the cam RS of the impulse repeating device.
  • the starting of an impulse sender can of course also be brought about by means of a special current impulse, which is sent out i, m another impulse sender first after the call meter impulses have been sent out, and which should therefore not be registered by the call meter.
  • Said starting impulse can also. if desired, be of an entirely different k' id than the call meter impulses, by way of rmple an alternating current impulse. in which case both kinds of current impulses may be transmitted over the same circuits,ii arrangements are only made to prevent the call meter from being actuated by the current impulse starting the impulse sender.
  • ' 1 means to actuate said call meter and the impulse senders over the same circuits by means of current impulses of different kinds.
  • the impulse sender is adapted to be started by only one kind of impulses, and means to transform the impulses intended for starting of the impulse sender to a call meter impulse the former impulses being 'of a longer duration than the call meter impulses
  • electromagnetic means adapted to be started by impulses to be transmitted and to repeat said impulses in the form of'impulses of short duration independently of the duration of the. starting impulse.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Meter Arrangements (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Details Of Flowmeters (AREA)
  • Measuring Volume Flow (AREA)
US462104A 1929-06-21 1930-06-18 Call metering in telephone systems Expired - Lifetime US1835893A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE359448X 1929-06-21

Publications (1)

Publication Number Publication Date
US1835893A true US1835893A (en) 1931-12-08

Family

ID=20308874

Family Applications (1)

Application Number Title Priority Date Filing Date
US462104A Expired - Lifetime US1835893A (en) 1929-06-21 1930-06-18 Call metering in telephone systems

Country Status (5)

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US (1) US1835893A (enrdf_load_html_response)
BE (1) BE371303A (enrdf_load_html_response)
DE (1) DE595079C (enrdf_load_html_response)
FR (1) FR697615A (enrdf_load_html_response)
GB (1) GB359448A (enrdf_load_html_response)

Also Published As

Publication number Publication date
GB359448A (en) 1931-10-19
DE595079C (de) 1934-04-03
BE371303A (enrdf_load_html_response)
FR697615A (fr) 1931-01-20

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