DE1936700A1 - Circuit arrangement for coin telephones - Google Patents

Description

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SIEMENSAKTIENGESEII ₁ SCHAi ¹ O? 'Munich 2, the Ιδ.Ml 1969

Berlin and Munich Witteisbacherplatz

^PA 69/2638

- 19367QO

Schaltun ^ sanordnun ^ for_ coin operated telephones

During the construction and the duration of one of a pay phone outgoing connection is known to take place to carry out the necessary control and testing processes as well as to ensure the cashing-off of the stored data, which takes place according to the principle of time pulse counting Coins an exchange of signs between the | Pay phone and the exchange in the office.

Pur the desired subscriber-like connection of one Coin-operated telephone, this exchange of characters can be used, for example, to identify the subscriber-specific class features, for the allocation of authorizations for the establishment of certain connections or “for the operation without · immediate payment by the owner-eängs Teilnehraermünzers ·,; be mutually directed »* -" _,

For reasons of the uniform structure of such characters, it would be useful not to have to use an additional arrangement for their creation _{or similar}

It is the object of the invention, in a modern switching system, by the requirements mentioned conditional additional exchange of characters between the exchange and to enable payphones to generate these characters without additional effort.

It is assumed that the for a Spikch applicable fee enjun it s in the form of AC pulse signals, currently in 16 kHz pulses, for the purpose of payment from the mill exchange routed to the payphone «. The object on which the invention is based is now achieved by

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that these alternating current signs already exist during the Call setup will be sent out and in each case. deviating from the task originally assigned to them trigger further control processes (e.g. "monitoring, releases to conduct coin-free conversations)"

Sfindungsgeraäss it thus makes use of to carry out this necessary control operations ο existing device for generating this AC character initially auslOschliesslich used for counting purposes, so you can without compromising! Participant, without particular to V / and given W, with them depending on to be established by the operating phase Conversation has a different meaning ο

Such a symbol can be used, for example, to enable information to be called up from the coin dispenser, eg about special identification features "If the receiving device is disturbed, this .25 statement can be contained in the identifier given by the Münaer after receiving the symbol" ·. "^'■;

For a Münzfernsprechertyp which, in particular with regard to the discharge of Muenzer of facilities \ to build emergency calls the "through-connection of, speech path in the Mint and the Wählziffernabgabe is possible initially independent of the presence of the required minimum charge, resulting erfiridungsgeraäss another advantageous application of this normal alternating current characters

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a chargeable call is established, the then required minimum fee check by sending such an AC sign in the pay phone initiated. Taking into account the information already provided for these characters existing receiving devices will then cause the connection to be disconnected in the event of a negative outcome

In the figure is in the form of a block diagram Principle of this minimum fee check in the pay phone illustrates.,

When the handset is unhooked, the office squint is closed by actuating the hook switch HIJ and the delivery of the dialing digits W. is released. If the evaluation of the first digits received or a first group of dialing digits determines in the dialing exchange Vst that no emergency call connection is desired, but a chargeable call is to be set up, oo a 16 kHz, normally used for counting purposes, is to be set up via the connection line - Pulse signals sent out. Via the subscriber switch TW, which is present in a known manner for separating the voice frequencies and the 16 kHz counting pulses, this character iii is now received by the receiving device ZE provided for this purpose in the same way as the counting pulses received during a long-distance call, and thus the one for the Schematic diagram of the selected relay Z actuated. As a result, the assigned contact ζ is closed and causes the testing device PE, which is not shown in detail and which can be constructed in a known manner, to determine whether the number of coins corresponding to the minimum fee are available. If this minimum charge is present, this finding leads, for example for the actuation of the relay P 'which, via the contact ρ the payment system K is not shown in detail, is switched to be effective, Running is made Mindestgebührpfufung negative, so the minimum required charge is not present, performs this Hold-open device for actuation of relay N.

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19367 upper floor

The contact η lying in the speech path then causes the compulsory separation of the connection » '-.

The. tightened electromechanical components should serve only to explain the principle in which

in practice, however, they can be carried out electronically Represent building units.

2 claims
1 figure

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Claims (1)

Circuitry "for payphone, where the cashing by AC oak trees (eg ₀ 16 kHz characters) is effected, which emitted from the Wählvermittlungsstelle v / ground, characterized, in that said AC signal will be sent already during call structure and _different: from which they Initially assigned task trigger further control processes (e.g. monitoring, release to conduct coin-free conversations). Circuit arrangement, in particular according to claim 1, for coin operated telephones, where the dialing digit delivery is initially independent of the availability of the required Minimum fee is possible, characterized in that the minimum fee check is dependent from the in · the telephone exchange due to of the first dialing digit or a first group of dialing digits determined by the conversation to be established by sending out an alternating current signal is effected. PA 9 / 42O / 4991U * Ί09808 / 1706 Blank page