Control system of public call offices

(54, Public Telephone Station Control System ®!

(57) The modular control system contains a different number of units. public telephone stations (1), authentication and identification units (2) public telephone stations and adapters (3) public telephone stations and the regional operating system (4) public telephone stations, credit card validation and billing center (5) and subscriber cards public telephone stations and a different number of units (14, maintenance of public telephone verification and identification units, vSeehny falling within regional, and nationwide hierarchical structures to perform their functions in real time.

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Control system of public telephone stations

Technical field

FIELD OF THE INVENTION The present invention relates to a modular control system for public telephone stations intended for nationwide integral management of public telephone stations, including overall control, i.e., telephone set-up, alarm collection, fault repair, reception of charges and daily procedures, temporary or permanently disconnected subscribers. “simultaneous” preparation of statistical and profit reports. The invention is applicable in the field of telecommunications and is particularly directed to the improvement of public telephone stations and services provided to users of such stations.

BACKGROUND OF THE INVENTION

Although today there are a number of systems aimed at a concerted effort to provide these services or to maintain public telephone stations, it was by no means intended to integrate the management of the telephone.

To manage telephony services, the company must use different departments to jointly perform the entrusted functions, and there is currently no multi-functional public telephony management system performing services provided to users while enhancing actual services with the benefits derived therefrom.

SUMMARY OF THE INVENTION

The public telephone station control system of the invention is fully effective in terms of nationwide integral public telephone management and will undoubtedly bring significant improvements to the services provided by these public telephone stations, in particular higher, speed of access to the switched telephone network and a wider range of services.

The services consist in the possibility now provided by public telephones to pay for the relevant services by using various types of credit cards, such as credit, subscription, subscriber, multi-sour cherry and other similar cards.

The public telephone station control system according to the invention essentially comprises the following elements:

A. Public Telephone Stations - MT.

B. Verification and Identification Units of Public Telephone Stations - VIU.

C. Adans of Public Telephone Stations - I.ITAU.

D. Operating system of public telephone stations - MTOS.

33. Verification and charging center for credit cards and public telephone station subscriber cards - VIC.

P. Public telephone verification and identification unit maintenance unit.

Transfers between the individual elements making up the system do not take place via two different communication protocols.

The first of these protocols is used in STN switched telephony networks, using a V. 23 modem at 1200 bps.

The second protocol is used in IHSRPAC network connections with X.25 packet switching at 2.400 bps.

The second protocol can also be used in packet-switched ΙΒΞΒPAC networks for an actual X.25 call, and at speeds lower than those used in the aforementioned protocols.

The public telephony management system has a hierarchical national and regional structure, with the public telephony MTOS operating system being the highest element of the regional hierarchy of the VIC credit card validation and billing center and the public telephone station subscriber cards the highest element of the national hierarchy.

LIT Public Telephone Stations are intelligent public telephone stations that allow you to pay with coins, subscriptions, credit and pay cards.

VHJ verification and identification units. public telephone stations are used to connect public telephone stations and each unit can connect up to 16 public telephone stations in modules of 2 public telephone stations.

The main functions of public telephone line verification and identification units VIU are as follows;

- 3 - Identify and allow connection of the public telephone station to the switched telephone network.

- When it is determined that the identified hill station is not a public telephone station MT, the VTU verification and identification unit shall prevent it from being connected to the switched telephone network STTf.

- • Calls with / credit cards are also verified by VIUs. The VTU receives the user card information from the public telephone station Ι.ΊΤ and sends it to the VIC credit card verification and charging center, which, after properly checking it, sends a message to the VIU and returns it to the MT telephone station.

Apparently, the public telephone station MT and the VTU authentication and identification unit may allow or disallow calls based on the message received from the VIC verification and charging center.

VIU verification and identification units are also useful for maintenance purposes, in particular:

- Remote programming of working parameters.

- Sending both its own daily traffic messages and messages derived from the MT public telephones attached to them.

- Forwarding alarm messages to VIUs.

- Concentration of messages from public telephony TT, Public Telephony Authentication and Identification Units VIU communicate with public telephony MTOS operating system via STN switched telephone network using V modems? 2? at 1200 bps with the credit card validation and billing center using a packet switched IBBRPAC network, with an X.25 protocol at 2,400 bps.

The public telephony MTAU adapters are designed to authenticate credit calls from MT public telephones that are not connected to the switched telephone network STTf via the public telephony authentication unit VIU.

Transmissions with MT public telephones are in progress^-! Switched telephone network STU via V.2 modems? at 120 bits / s and VIC credit card validation and billing center using a packet switched IEERPAC network with protocol X, 25 at 2,400 bits / s.

MTAU adapters for public telephone stations are also useful for maintenance purposes; send their own daily operational messages to the MTOS of the public telephone stations.

Public telephony MTAU adapters can also have their own maintenance parameters programmed remotely and are connected to the STTT switched telephone network by a special SDSL service line.

Their circuits are similar to those of the public telephone line VTU verification and identification units and may be changed to them by minor modifications.

The MTOS operating system of public telephone stations consists of two subsystems:

a. FOCUS Message Concentration Unit.

b. Central Operating Computer - COC.

The following regional functions control the public telephony operating system:

- Concentration of alarm messages reported by MT public telephones, VTU verification and identification units of public telephones and MTAU adapters of public telephones. '

- Fault and repair reporting.

- Statistical reports.

- Remote Programming of MT Public Telephone Stations, VIU Authentication and Identification Units and MTAU Adapters of Public Telephone Stations.

- Preparing and sending fee reports to the collection firm. Communication with MT Public Telephone Stations, VIU Authentication and Identification Units and MTAU Adapters of Public Telephone Stations takes place via a switched telephone STTT network using V modems. 23.

Communication with the VIC authentication and billing center of credit cards and public telephone subscriber cards takes place via a Z.25 packet-switched network.

- 5 The VTC Credit and Public Telephone Station Authentication and Accounting Center provides the following functions nationwide:

- Credit card verification.

- Creating and updating black lists containing and reporting doubtful customers.

- Creation and updating of gray lists containing all customers who have used the loan and specifying their remaining loan.

- Receiving and compiling billing reports for a credit organization associated with the system.

The VIG authentication and billing center communicates with the VIU authentication and identification units and the ITTAU adapters of the IBUTďAC public telephony network with X.25 packet switching.

The public telephone line verification and identification unit maintenance unit VIU is a terminal station composed of two modules. One of these modules includes a display unit and a keyboard, while the other includes an interface for fertilizing it with the authentication and identification units VIUs and MTAU adapters of the public telephone stations.

It is small in size and is directly connected to these units, allowing the testing routines to be performed.

Overview of the drawings

In order to provide a more complete description and to contribute to an overall understanding of the characteristics of the present invention, a drawing is attached to the application which, although purely illustrative and not entirely complete, depicts a group diagram of the invention and existing interrelationships between blocks.

DETAILED DESCRIPTION OF THE INVENTION

It can be seen from the figure that the control system of the public telephone stations.oodle of the invention comprises public telephone stations 1 or MT of the authentication and identification unit 2 of the public telephone stations 6 of the VIU, the public telephone station adapter 3 or the MTAU, 4 public telephone stations or MTOS units, the credit card verification and charging center 2 with the public telephone station subscriber cards, or the VIC unit, and the public telephone verification and identification unit 7IU maintenance unit 14.

It should be borne in mind that for each region there is one MTOS operating system of 4 public telephones, while there is one national VIG verification and billing center of 5 credit cards and public telephony subscriber cards.

Communication between the individual units making up the system takes place via two different transmission protocols.

The first protocol is used in transmissions by a switched telephone network using V.23 modems at a rate of 1200 bits / second between the public telephone stations 1 and the switched telephone network 6, between the authentication and identification units 2 of the public telephone stations and the switched telephone network 6, between the public telephone station operating system 4 and the switched telephone network 6, between the switched telephone network 6 and the special digital service line 7, and finally between the special digital service line 7 and the public telephone station adapter 3.

The second protocol is used in transmissions of IEERPAC packet switched networks by X.25 protocol at 2,400 bits / second between authentication and identification units 2 of public telephone stations and network 8 with packet switching, between adapter 2 of public telephone stations and network 8 with packet switching and also between the operating system 4 and the packet switched network 8.

The second protocol is also used in connections over a packet-switching network for an actual X.25 call at speeds lower than those used for the other two protocols between the credit card authentication and charging center 5 and the public telephone station subscriber cards and the packet-switching network 8.

The public telephony control system has a nationwide and regional hierarchical structure where the operating system of 4 public telephones is the highest element of the regional hie^with-h '^:

- 7 rarchy and verification and billing center 5 credit cards and subscriber cards are the highest element in the nationwide hierarchy.

Public telephone stations 1 are intelligent public telephone stations that allow for the payment of coins, prepaid cards, credit cards and pay cards as mentioned above.

VUU public telephone verification and identification units 2 are used to fertilize public telephone stations 1 and each authentication and identification unit 2 can connect up to 16 public telephone stations in modules of 2 public telephone stations 1.

The main functions of the authentication and identification units of 2 public telephone stations are:

1. Identify and permit the connection of public telephone stations 1 to the switched telephone network 6. When the identified end station is not a public telephone station 1, it prevents its connection to the switched telephone network 6.

2. Call requirements with credit cards are verified by the verification and identification unit 2.

The authentication and identification unit 22 receives the card information from the public telephone station 1 and sends it to the authentication and billing center 5, which, after properly checking it, sends a message to the authentication and identification unit 2 and forwards it to the public telephone station 1.

In other words, the public telephone station 1 and the authentication and identification unit 2 may allow or disallow calls based on this message.

Authentication and identification units of public telephone stations are also useful for all maintenance purposes, including:

- Remote programming of working parameters.

- Sending both own daily traffic messages and messages derived from connected public telephone stations 1.

- Transmission of sheet metal lenses to VIUs 2.

- Concentration of messages from.

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The authentication and identification units 2 communicate with the operating system 4 of the public telephone stations via a switched telephone network 6 using 1200 bits / s V.23 modems and with the authentication and billing center 5 using a packet switched network 8 with an X.25 protocol at 2,400 bits / with.

The public telephone station adapter Jf is designed to verify credit calls from public telephone stations 1 that are not connected to the switched telephone network 6 via the authentication and identification unit 2.

Transmissions to the public telephone stations 1 proceed via a switched telephone network 6 via modems V. 23 at 1200 bits / s with the credit card verification and charging center 5 of the packet switched networks 8 with the X.25 protocol at a rate of 2,400 bits / s.

The Public Telephone Station Adapter 2 is also useful for maintenance purposes; sends its own alarm and daily operating messages to the operating system of 4 public telephone stations.

The public telephone station adapter 2 may also have its own maintenance parameters remotely programmed and is connected to the switched telephone network 6 by a special digital service line 7; the adapter circuitry is similar to the verification and identification unit 2 circuitry and may be changed thereto by minor modifications.

The public telephone board operating system consists of two subsystems, namely:

- Message concentration MCUs.

- COC Central Operating Computer.

The 4 public telephony operating system controls the following regional functions:

- gathering of alarm messages reported by public telephone stations 1, authentication and identification units 2 and adapters 3 of public telephone stations.

- Fault and repair reporting.

- Statistical reports.

- Remote programming of public telephone stations 1, authentication units of identification units 2 and adapters 3 of public telephone stations.

- Preparing and sending collection reports to the firm 9.

Communication with public telephone stations 1, authentication and identification units 2a public telephone adapters 3. However, communication with the credit and authentication center 5 of the credit and subscriber cards takes place via the X.25 packet switching protocol at 2,400 bits / s.

The IHHRPAC packet switching network 8 can be used for nationwide connection of consulting terminals 10 to public telephone operating systems 4.

• Verification and Charging Center 5 takes care of nationwide credit card validation, but at the same time creates and updates black lists containing them? ' /, and gray lists containing all customers who have used their credit, each of whom determines their remaining credit.

Finally, the verification and charging center 5 receives and generates accounting reports for the credit organization 12 associated with the system using the data processing center 13. and terminals 10 equipped with tape units 11.

The authentication billing center 5 communicates with the authentication and identification units 2 and the public telephone line adapters 3 via the X.25 packet switched network at 2,400 bps with the credit organization 12 and the data processing center 13 through the same packet switched protocol network 8 X.25 at 64 kbit / s.

The Public Telephone Station Authentication and Identification Unit Maintenance Unit 14 is an end station comprising two modules, one of which consists of a display unit and a keyboard, while the other includes an interface for connecting it to the Authentication and Identification Units 2 and adapters 3 of the public telephone stations. .

It is small in size and is directly connected to said units, allowing the testing routines to be implemented.

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