US2200796A - Telephone metering system - Google Patents

Telephone metering system Download PDF

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Publication number
US2200796A
US2200796A US122154A US12215437A US2200796A US 2200796 A US2200796 A US 2200796A US 122154 A US122154 A US 122154A US 12215437 A US12215437 A US 12215437A US 2200796 A US2200796 A US 2200796A
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United States
Prior art keywords
relay
meter
contact
impulses
fee
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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
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US122154A
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English (en)
Inventor
Lill Friedrich
Pinell Walter
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.)
Siemens and Halske AG
Siemens Corp
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Siemens Corp
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Filing date
Publication date
Application filed by Siemens Corp filed Critical Siemens Corp
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Publication of US2200796A publication Critical patent/US2200796A/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
    • H04M15/28—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP with meter at substation or with calculation of charges at terminal
    • 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 invention relates to telephone systems in which subscribers meters arranged in the exchange are operated during a. call and more especially to such systems in which the metersare influenced by a meter advancing device for example, an impulse sender at relatively short intervals of time which according to the trafiic direction and thus according to the value of the call, can be of varying durations. If in such systems subscribers stations are to be provided with fee indicators, difiiculties are involved since it isnot feasible to operate these fee indicators simultaneously with the meters, for the very frequent application of a potential operating the fee indicator at the subscribers station while a call is in progress causes inconvenience to the calling subscriber.
  • the invention aims at enablin fee indicators to be operated efiiciently at subscribers? stations while avoiding any inconvenience to the subscriber and achieves this in that switching means are provided, which when a call becomes chargeable, enable the fee indicator at the subscribers station to be influenced at a different time and/or by impulses whose number is less than the number of impulses operating the subscribers meter at the exchange.
  • the fee indicator of a subscribers station engaged in the call can be advanced at the end of the call by the same as.
  • the operation by a smaller number of impulses enables a more rapid release of the connecting devices inthe exchange which haveto be maintained set while the metering impulses are passing. It can, however, only be applied in practice when strict correspondence between the value indicated at the fee indicator and the value in-di-. cated at the subscribers meter does not matter because, since for each- 10, 20, or more steps of the meter in the exchange the fee indicator is only advanced one step; the value indicated at the fee indicator is higher or lower than that indicated at the subscribers meter according as to when the criterion for advancing the fee indicator is given, 1. e., either on commencing or ter minating a group of 10, 20 or more metering impulses.
  • the fee indicator can also be advanced during the call.
  • the transitory application of potential to calling subscriber and serves to indicate to the subscriber the advancing of the fee indicator and the amount of the fee to be paid.
  • one and the same meter advancing device can operate both the sub. scriber,s meter in the exchangeand also the fee indicator.
  • two metering advancing devices can be provided, one for the subscribers meter and the second for the fee indicator.
  • FIG. 1 shows by way of example a subscribers station and a line therefor extending to an exchange; a fee indicator is shown at the substation and a subscribers meter at the exchange, together with controlling devices at the exchange for operating the fee indicator and the meter in accordance with the invention.
  • Figs. 2, 3 and 4 disclose modified controlling arrangements. All details which do not help to explain the invention have been omitted for the sake of clarity.
  • the call becomes chargeable from the moment at which the called party replies.
  • the instant at which a call becomes chargeable can occur at other time, for example when the calling impulse becomes operative, on seizing a connecting device over the pre-' selecting stage or stages, or when the calling subscriber transmits the first numerical impulse train.
  • the discriminator ML is set by the impulses transmitted by the calling subscriber which characterize the traflic direction and thereby the value of the call and this switch on its first step closes contact Hikml and opens contact I 'Ikml. It will be assumed that the call is directed to the second fee zone and accordingly wipers 22 and 23 of the switch ML are set on contacts 24 and 25.
  • relay Z1 When the called subscriber replies relay Z1" is energized in a manner which will not be described in detail by the application of negative battery to the lower speakingnlead. Relay Zr closes contact l8zr, I921", and 20.21. r
  • the meter advancing device Z1 is assumed to consist in the present embodiment of a rotary switch with a larger number of contacts.
  • Two wipers zfl and zfll and z'f2 and afl2, etc., are provided for each trafiic direction and hence for every possible value which can be charged.
  • the subscribers meter in the exchange is operated over the wipers 2f! and 2]2 and the contact banks associated with them while 2]! l and zf
  • the circuit for magnet D27 is closed at contact 202T; negative, 2027, Mvl, I Skml, Dfz, interrupter 2
  • the circuit for the subscriber's meter is as follows: positive, 26, 2 2, 24, 22, I827,
  • relay Z is energized by connecting positive battery 'to the guarding and holding lead over a low resistance (VR): positive, contact 28111, VR, 21, zflZ, 25, 23, I921, l3vl, 4, 3, relay Z in parallel with winding II of relay T, 2t, and negative.
  • Relay Z closes its contacts 292, 30a, and M2. Over contact 292 and 302 alternating current is simultaneously applied to both speaking leads and thereby the fee indicator GA at the subscribers'station is operated.
  • a control meter KZ is energized over contact 3lz.
  • the arrangement can of course be adapted so that the alternating current is merely applied simultaneously to the two speaking leads.
  • the fee indicator is influenced at the end of the call.
  • the meter impulse sender is so constructed that it is stepped in one direction by a driving magnet Def! and is restored in steps to the rest position by a second driving magnet Dzf2.
  • a relay V2 is also provided in any known which maintains the connecting path to the calling station so long as the meter advancing device Z) is in the working position.
  • Relay V2 is oper ated over a contact 34702; which is closed on the first switching step of the meter impulse sender.
  • relay C which controls the final disconnection of the connecting path and also the cut-off relay T of the subscribers line over contact 35122 and in addition relay Z1- independently V of the succeeding connecting devices in a manner which will not be described in' detail. Since during the advance of the meter impulse sender in the course of a call, no impulses are tobe transmitted to the fee indicator, the connection between the guarding and holding lead 4 and wiper 23 of the discriminator switch is broken at'connecessary to ensure a satisfactory operation of the fee indicator by the relay applying the operating current.
  • relay VR shown in Fig. 1 can be omitted. Alow resistance would then be connected up in its place.
  • the wiper .21! I and eflZ (Fig. 1') are not necessary.
  • the wiper traversing this contact bank is connected over wiper 22 of the discriminator switch and contact 391;! to lead 5 as shown in dotted lines in the figure by means of relay Vi.
  • the branch from 4 over contacts 2611i, liter, etc., may then also be omitted.
  • a special relay GAT which characterizes the connection of the subscribers station to the fee indicator is provided. This is energized by the closing of contact 400. It closes its contacts Mgar, 42cm and 43mm.
  • relay GA? enables both the maintenance of the connecting path to the calling subscriber by relay V2 and the switching through of the branch of lead t enabling the operation of relay Z at the subscribers line to take place only if a subscriber having a fee indicator has been connected to the connecting device common to subscribers with and without fee indicators.
  • a relay GAr can also be provided in the embodiment according to Fig. 1. The switching through of the branch of lead 4 to wiper 23 of the discriminator switch would then be dependent upon its energizing at contact Mom.
  • two metering impulse senders ZfI, ZfII are provided one for operating the subscribers meter and the second for operating the fee indicator.
  • the influencing of the subscribers meter takes place in the manner already described.
  • the relay G On the first metering impulse the relay G corresponding to the trailic direction and thus to the value of the call, is energized in the metering circuit which passes over the wipers of the discriminator switch and of the metering impulse sender. Since it may again be assumed that the call is set up in the second traflic direction and accordingly wiper 22 of the switch ML rests on contact 24, relay G2 is energized over its winding I on the first metering impulse. It locks up over the oif normal contact 507C211, its contact 5Ig2 and its winding II.
  • a fee indicator is operated by one impulse for each time unit and for calls in the second zone by two impulses etc.
  • the first, sixth, eleventh etc., contacts in the contact bank of wiper cfIIl of the metering impulse sender Z II is characterized by relay (3! (first zone).
  • the second, seventh, etc., contacts in the same contact bank are characterized by contacts of relay G2 etc.
  • a relay G3 (not shown) characterizing this traffic direction energizes relay G2 over contact 559/3 and this energizes relay Gl over contact 52572.
  • Contact 5W3 is then also closed and accordingly impulses are transmitted when the wiper ZfIII passes over contacts I, 2, 3, 6, l, 8, etc., of the contact bank.
  • the connection of the driving magnet DzfII can be dependent upon the energizing of this relay as is indicated in the drawings by dotted lines.
  • the meter advancing device ZJII would then not be set in motion when a subscriber not provided with a fee indicator was connected up.
  • the release cf the only operated metering impulse sender Z/I in the case of such calls would then take place immediately on the release of relay VI independently of relay W.
  • the metering impulse sender Z in can transmit either the same or a smaller number of impulses than the metering impulse sender ZfI for each call. In the latter case naturally a switch having a smaller number of switching positions can be used for the metering impulse sender ZfII than for the metering impulse sender Z I.
  • the stepping of the fee indicator can be adjusted to the particular tariff obtaining. Also in the case of the embodiment according to Fig. 1 by varying the connection of potential to the contact banks traversed by the wipers of the metering impulse sender -Z1 the latter can be adjusted to any tariff desired. Instead of sending a metering impulse to the subscribers meter GZ at shorter or longer intervals of time as is. shown in Fig.
  • thesystem in which, in the case of connections in the zone I, an impulse is transmitted after each third step of the impulse sender which is advanced at definite intervals of time, and in the case of calls in the traffic zone 2 after every second switching step of the impulse sender, thesystem can be arranged so that on the commencement of each time interval, which has the same length in the case of all calls independent of the traflic zone with which the call is concerned, a varying'number of impulses can be transmitted in succession corresponding to the trafiic zone in question.
  • subscribers lines an exchange in which said lines terminate, means in the exchange for extending a connection from a calling one of said lines to another line, a fee indicator on each line responsive to metering impulses transmitted thereover both during and after a call, a meter for each line, means in the exchange for transmitting impulses to operate the meter of a calling line during a connection, and other means controlled thereby independently of the operation oi. .said meter for transmitting metering impulses over the line to the fee indicator.
  • subscribers lines In a telephone system, subscribers lines, an exchange in which said lines terminate, means in the exchange for extending a connection from a calling one of said lines to another line, a fee indicator on each line, a meter for each line, a controlling device, means for operating said device for transmitting a series of impulses to operate the meter of the calling line during a connection and for transmitting another series of impulses to the fee indicator of the calling line independently of the operation of said meters 3.
  • the controlling device transmits a series of impulses to the meter during the connection and another series of impulses to the fee indicator on termination of the connection.
  • the fee indicator receives impulses on termination of a connection, and means controlled by one of the controlling devices for maintaining a connecting circuit between said device and the calling line.
  • a zoning device and means for operating said device to control the number of metering impulses.
  • a relay for each of the zones for controlling the number of impulses transmitted by said devices, one of the relays operated responsive to a connection between two lines, and means efiective on operation of any one of the relays to operate the relay of the next less remote zone.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Meter Arrangements (AREA)
US122154A 1936-01-27 1937-01-25 Telephone metering system Expired - Lifetime US2200796A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2200796X 1936-01-27

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US2200796A true US2200796A (en) 1940-05-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
US122154A Expired - Lifetime US2200796A (en) 1936-01-27 1937-01-25 Telephone metering system

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US (1) US2200796A (de)
AT (1) AT148932B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480732A (en) * 1965-07-01 1969-11-25 Siemens Ag Charge accumulation system for telephone installations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480732A (en) * 1965-07-01 1969-11-25 Siemens Ag Charge accumulation system for telephone installations

Also Published As

Publication number Publication date
AT148932B (de) 1937-03-10

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