JPH1070605A - Method for limiting use of terminal equipment in key-phone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow one key-phone terminal equipment to execute the service of a different class depending on a class of a card by mounting a card reader to the terminal equipment and deciding the class depending on the card. SOLUTION: A model of a card reader 16 corresponding to a magnetic card, an IC card and a smart card or the like available of a class card is in use and the card reader 16 reads data stored on the class card and gives the data to a CPU 10. In a key-phone master set, a memory 22 stores a program and fixed service data to execute various functions of the system and also stores data such as each service class. Then the CPU 20 of the master set controls speech switching and controls the card reader 16 of the terminal equipment to receive the read class data by the reader 16 and to execute the corresponding service. In this classes, for example, the class A allows up to an international call, the class B permits up to a toll speech, the class C allows up to a local speech and the class D permits only an extension speech.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a key phone system.
(key-telephone system)

[0002]

2. Description of the Related Art Usually, a key phone system has a call restriction function as a terminal use restriction function that can be set for each terminal. This call restriction function is a function of setting a grade on the extension terminal to restrict the use of the office line.

[0003] In the setting method of the call restriction function, for example, in a programming terminal of a key phone system, a function key is pressed twice in an on-hook state, then a # key is pressed, and then a second key is pressed. As a result, the call restriction function is set, and thereafter, the numerical keys of the grade set for each terminal are pressed. For example, if the number of extensions is 16, numerical keys for setting a grade for each extension terminal are input as shown in Table 1 below. When the operation is completed for all the terminals, the # key is pressed again to end the operation.

[Table 1]

For example, "0" shown in Table 1 indicates that an extension call is possible, "1" indicates that a local call is possible, "2" indicates that a toll call is possible,
“3” is used to set each use restriction for international calling. To be more specific, the extension 4 terminal allows local calls, the 5 extension terminal allows only internal calls, the 8 extension terminal allows international calls, and The operation procedure when all terminals can make a toll call is as follows: Press the function key twice,: # key and 2
Press the number key, the number keys: 2,2,2,1,0,
The operation is to press in the order of 2,2,3,2,2,2,2,2,2,2,2.

[0005]

Since the terminal use restriction function in the conventional key phone system as described above sets a class for the terminal, it is higher than the class set for the terminal. No grade service is available. That is, for example, a terminal in which a class up to a local call is set can perform only a local call even when a subscriber with a higher grade uses it, and cannot make a toll call or an international call. Therefore, in the case of corporations, etc., terminals above the officers are set to a class that can be used for international calls, and terminals for department managers are set to a class that can be used for toll calls. The lower terminal sets the class that can be used for local calls, and the terminal installed at the lobby reception etc. has a class that can make international calls if it is set for only internal calls. There is a problem that a subscriber who is a subscriber cannot make an international call using a terminal in the lobby.

[0006]

According to the present invention, in order to solve the above-mentioned problems, a key reader is provided in a key phone terminal, and a grade card given to a subscriber when the terminal is used is provided by a card reader. , To identify a class, and to provide a terminal use restriction method for implementing the service of the identified class.

[0007]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of a key phone system in which a terminal having a card reader 16 is installed.

[0009] The CPU 10 of the terminal processes various commands by key input of the key matrix 12 to control the formation of a communication path, and also controls the ring transmission and the display of various functions. Then, it processes the card information read by the card reader 16 and transmits it to the key phone main unit, receives the class service data from the key phone main unit, and executes the service according to the data. The LCD display 14 displays messages such as a dial number, a partner number at the time of an extension call, an office line number of an office line connection, a call hold, a reservation, and a call rejection.
The interface circuit 18 is a transmission / reception data interface between the extension subscriber circuit 26 of the key phone main unit and the CPU 10 of the terminal. The card reader 16 uses a corresponding model such as a magnetic card, an IC card, or a smart card that can be used as a grade card, reads data stored in the grade card, and sends the data to the CPU 10.

In the key phone main unit, the memory 22 stores programs for performing various functions of the system and fixed service data, and data such as each service class is stored therein. The CPU 20 of the main device controls the call switching, and controls to receive the class data read by the card reader 16 of the terminal and to perform the corresponding service. The extension subscriber circuit 26 is an accommodation circuit for connecting the extension terminal. The line subscriber circuit 32 is connected to the line and compensates for ring detection and pulsing and overvoltage protection and switching losses. The switching circuit 24 selects a communication path switching between the local line subscriber circuit 32 and the internal line subscriber circuit 26. The interface circuit 34 includes the line subscriber circuit 32,
Switching circuit 24, extension subscriber circuit 26, second CP
This interface allows control data to be smoothly input and output between the U20s. The tone generator 28 generates various tone signals and outputs them to the switching circuit 24.
The DTMF transceiver 30 analyzes the DTMF signal input through the local line subscriber circuit 32, outputs the corresponding digit data to the CPU 20, converts the digit data input through the internal line subscriber circuit 26 into a DTMF signal, and converts the digit data into a DTMF signal. It is transmitted via the line subscriber circuit 32.

FIG. 2 shows a control flow chart of the card type use restriction function in the terminal and the main unit of the key phone, which will be described with reference to the data table of the grade card shown in FIG.

When a grade card is inserted for reading, the card reader 16 notifies the CPU 10 of the terminal of card insertion. Then, the CPU 10 monitoring the notification signal indicating the insertion of the grade card in step 101 proceeds to step 102 upon receiving the notification signal. In this 102 stage, CPU
Reference numeral 10 controls the card reader 16 to read data as shown in FIG. 4 registered in the grade card. Then, at step 103, the CPU 10 transmits the read data to the main device via the interface circuit 18. Thereby, the read data of the card reader 16 is transferred to the interface circuit 18.
Is transmitted to the CPU 20 of the main unit via the extension subscriber circuit 26.

When the CPU 20 of the main unit receives data from the terminal in step 201, it checks in step 202 whether the received data is card data registered in the database of the memory 22. If the received data is not the card data registered in the database, the process proceeds to step 206 to stop the service. On the other hand, if the received data is card data registered in the database, 2
Proceed to step 03, check the class in the database, control the key phone system to perform the corresponding service, and proceed to step 204. CPU at step 204
20 sends service performance data corresponding to the confirmed class to the terminal.

At step 104 after step 103, the CPU 10 of the terminal waits for reception of the service execution data from the key phone main unit. When the service execution data is received, the process proceeds to step 105, at which the received service execution data is received. To perform the function according to.

The classes in this example are classified into four classes: Class A, Class B, Class C, and Class D. Class A is for international calls, Class B is for toll calls, and Class C is for local calls. Up to class D is set to a class that allows only extension calls.

[0016]

According to the present invention, since a card reader is attached to a key phone terminal and a grade is set by a card, different grades of service can be implemented by one terminal according to the grade card. And the conventional problem is solved.

[Brief description of the drawings]

FIG. 1 is a block diagram of a key phone system including a terminal with a card reader.

FIG. 2 is a flowchart illustrating a terminal use restriction method according to the present invention;

FIG. 3 is an explanatory diagram of a registration data table of a grade card.

[Explanation of symbols]

 10 CPU 12 Key Matrix 14 LCD Display 16 Card Reader 18 Interface Circuit 20 CPU 22 Memory 24 Switching Circuit 26 Extension Subscriber Circuit 28 Tone Generator 30 DTMF Transceiver 32 Local Line Subscriber Circuit 34 Interface Circuit

Claims (3)

[Claims] 1. A method for restricting use of a terminal of a key phone system, wherein a class is set to limit a use range of the terminal,
A terminal use restriction method, comprising: providing a card reader in a terminal, reading a grade card given to a subscriber by the card reader, identifying the grade, and performing a service of the identified grade. 2. The terminal use restriction method according to claim 2, wherein four classes are set for international calls, toll calls, local calls, and extension calls. 3. The method according to claim 1, wherein the class card is an IC card or a smart card.