JPH0447743A - Dialing circuit - Google Patents

Abstract

PURPOSE:To attain efficient operation by making dialing while accessing a relevant telephone number in a telephone number storage means according to a dialing sequence decision means deciding the dialing sequence at random. CONSTITUTION:The circuit is provided with a dialing sequence decision means 4 deciding a dialing sequence of a telephone number stored in a storage means 3 at random and with a dialing means 5 making dialing while accessing a relevant telephone number in a telephone number storage means 3 according to the dialing sequence decision means. Thus, the arrival of call to each destination is dispersed in the simultaneous dialing from plural telephone sets to plural destinations by randomizing the dialing sequence so as to reduce the frequency of non-connection considerably.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a dialing circuit used in an IC card telephone or the like.

(Prior Art) As one of the conventional telephones, for example, an IC card is used as a storage medium for storing the telephone number data of a plurality of destinations, and the telephone number data of the plurality of destinations is stored from each memory area of the storage medium. There is one that reads out the information in order and dials it.

The dialing circuit in this type of conventional telephone temporarily stores the telephone number data of multiple destinations read from a storage medium such as an inserted IC card as necessary in its own internal memory. The device is configured to access the memory in the order in which it is stored and dial the corresponding telephone number.

Here, when a busy tone is returned from the network when dialing the first destination telephone number, the process then proceeds to dialing the second destination telephone number.

If a busy tone is still returned from the network during this dialing, dialing of the third and subsequent destination telephone numbers is sequentially executed using the same procedure.

A plurality of telephones equipped with a conventional dialing circuit having such a calling procedure are used, and each of the stored telephone number data of the plurality of destinations is stored in the same or almost the same order as the other party. If you start dialing the destinations at almost the same time, the first destination phone number sent will be the same on all telephones, so incoming calls will be concentrated on one line on the destination side, as shown in Figure 4. This results in a similar incoming call pattern.

As a result, with conventional dialing circuits, there are many cases where dialing is not connected, which hinders efficient operation.

(Problems to be Solved by the Invention) In this way, the conventional dialing circuit described above performs dialing of the corresponding telephone number while accessing the memory in the order in which it is read from the storage medium and stored in the memory within the circuit itself. As a result, when dialing out to multiple destinations simultaneously from multiple telephones equipped with this circuit, there was a problem in that incoming calls were concentrated on one line and the connection was often disconnected.

The present invention has been made in view of the above-mentioned circumstances, and even when dialing to multiple destinations simultaneously from multiple telephones, it is possible to alleviate the concentration of incoming calls on one line, and to improve efficiency by reducing the frequency of unconnected calls. The purpose of the present invention is to provide a dialing circuit that enables flexible operation.

[Structure of the invention]

(Means for Solving the Problems) A dialing circuit C of the present invention includes a telephone number storage means for storing a plurality of telephone numbers read from an inserted storage medium, and a telephone number storage means for storing a plurality of telephone numbers read from an inserted storage medium, dialing order determining means for randomly determining the dialing order of telephone numbers; and dialing while accessing the corresponding telephone number in the telephone number storage means in accordance with the dialing order determined by the dialing order determining means. The device is configured to include a dialing means for making a call.

(Function) In the dialing circuit of the present invention, the dialing order is randomly determined by the dialing order determining means for a plurality of destination telephone numbers read from the storage medium and stored in the memory within the circuit. .

Then, the dialing means dials the corresponding telephone number while accessing the memory according to the determined dialing order.

By randomizing the dialing order in this way,
When dialing a plurality of destinations simultaneously from a plurality of telephones, the incoming calls to each destination can be distributed, and the frequency of disconnections can be significantly reduced.

(Example) Hereinafter, an example of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is a block diagram showing an embodiment of a dialing circuit according to the present invention.

In FIG. 1, 1 is a card that stores each telephone number data of a recipient having multiple telephone numbers, 2 is a card reader/writer that reads and writes the telephone number data in card 1, and 3 is a card reader/writer. A telephone number memory 4 stores the telephone number data read out in step 2, and 4 randomly determines the dialing order of each destination telephone number stored in the telephone number memory 3 when making a call to the destination. A dialing order determining circuit 5, a dialing signal transmitting circuit for transmitting a dialing signal for each destination telephone number in accordance with the determined order by the Gui-1 full order determining circuit 4, and a dialing signal transmitting circuit 6 for transmitting a busy tone from the network after transmitting the dialing signal. 7 is a CPU that controls the entire dialing circuit including the dialing signal sending circuit 5.

Further, FIG. 2 is a diagrammatic representation of a data table used for dialing order determining processing in the dialing order determining circuit 4. As shown in FIG.

In FIG. 2, ``■'' to ``■'' are numbers assigned to correspond to each telephone number of the other party to indicate the different telephone numbers.

In addition, a to d represent the dialing order of each destination telephone number, where a is the first dialing, b is the second dialing,
C means to transmit the third time, and d means to transmit the fourth time.

Further, A to C indicate a dialing order pattern in which the allocation of each destination telephone number (■ to ■) to the above-mentioned dialing order of ad is a change in mode.

This call order pattern includes: the first call is dialed in the order of ■■■■ according to pattern A, the second call is sent out in the order of ■■■■ according to pattern B, and the third The transmission follows the pattern of C■■■
It is clearly stated that dialing is performed in the order of (2), and that dialing is performed repeatedly from pattern A for the fourth and subsequent calls.

Next, referring to the data table shown in FIG. 2, the calling operation in the dial calling circuit shown in FIG. 1 will be described in detail.

First, when the card 1 is inserted in response to a call request, a plurality of telephone number data stored therein are read by the card reader/writer 2 and stored in the telephone number memory 3.

At this time, the data table of the dialing order determining circuit 4 stores a calling order pattern as shown in FIG. 2<a>.

When making the first call, the CPU 7 first reads out the destination phone numbers in the phone number memory 3 in the order of ■■■■ according to the call order pattern A, and then sends the line from the dial signal sending circuit 5 in that order. 11° Send a dial signal to L2.

At this time, the busy tone detection circuit 6 detects whether or not a busy tone has been transmitted from the network each time a dial signal for each destination telephone number is transmitted.

If a busy tone is sent from the network at the time when the dialing signal for the destination telephone number (2) is first sent, then the CPIJ 7 sends a dialing signal for the destination telephone number (2).

Furthermore, if a busy tone is sent from the network at this time as well, the CPtJ7 sequentially sends out dial signals for the telephone numbers of the destinations (2) and (2) through the same procedure.

If a busy tone is still being sent from the network when the dialing signal for the destination telephone number (3) is sent, the call control based on the call order pattern A is terminated and the process proceeds to the next call control.

At this time, the CPU 7 rotates the dialing order pattern A in the data table of the dialing order determining circuit 4 to the right and updates it to the pattern ■■■■ as shown in FIG. 2(b).

Next, since this is the second call, the CPU 7 reads out the destination telephone numbers in the telephone number memory 3 in the order of ■■■■ according to the call order pattern 8, and sends the line from the dial signal sending circuit 5 in that order. A dial signal is sent to L1 and L2.

At this time, the CPU 7 monitors the detection output of the busy tone detection circuit 6, and if a busy tone is sent from the network at the time when the dial signal for the destination telephone number of ■ is sent out first, then the CPU 7 If a busy tone is still being sent from the network after sending out a dialing signal for the number, the same procedure is repeated to sequentially send out dialing signals for the telephone numbers of the other party (2) and (2).

If a busy tone is still being sent from the network even after transmitting the telephone number of the other party (3), the call control based on the call order pattern B is terminated and the process proceeds to the next call control.

In this call control, the CPU 7 reads out the destination telephone numbers in the telephone number memory 3 in the order of ■■■■ according to the call order pattern C, since this is the third call. A dial signal is sent from 5 to lines Ll and L2.

At this time as well, the CPU 7 monitors the detection output of the busy tone detection circuit 6, and if a busy tone is sent from the network at the time when the dial signal for the destination telephone number of ■ is sent out first, then A dial signal for the destination telephone number is sent, and if a busy tone is still being sent from the network, the same procedure is followed to sequentially send out dial signals for the destination telephone numbers ① and ②.

If a busy tone is still being sent from the network even after sending the dialing signal for the destination telephone number in (■), the call control based on the call order pattern in C is completed, and the call control performed in A Return to call control using the call order pattern.

As described above, in the dialing circuit of the present invention, the order in which the dialing signals for each destination telephone number are sent is randomly changed using different optical transmission order patterns.

Therefore, when dialing to multiple destinations at the same time from multiple telephones using this dialing circuit, the destination of the call will also be random. For example, when dialing based on the first phone number, The incoming call pattern is as shown in FIG.

In conventional circuits of this type, when receiving optical communications under the same conditions, the incoming call pattern would appear as shown in Figure 4, and the incoming calls would be concentrated on one line, but the circuit of the present invention eliminates such concentration of incoming calls. This can be avoided, and the probability of disconnection can be significantly reduced compared to conventional circuits.

〔Effect of the invention〕

As explained above, according to the Daicel transmission circuit of the present invention, dialing is performed while randomly accessing a plurality of telephone numbers read and stored from a recording medium such as an IC card. When dialing multiple destinations at the same time from multiple telephones equipped with circuits, the destinations of the calls can be distributed, making it possible to operate more efficiently with fewer disconnections. Has excellent advantages.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the dialing circuit according to the present invention, and FIG. 2 is a diagram showing an example of a data table used for processing in the dial order determining circuit 4 of the dialing circuit according to the present invention. , FIG. 3 is a diagram showing an example of a destination call arrival pattern when using the optical dialing circuit according to the present invention, and FIG. 4 is a diagram showing an example of a destination call reception pattern when using this type of conventional dialing circuit. FIG. 1... Node, 2... Card reader/writer, 3...
...Telephone number memory, 4...Dial order determining circuit, 5...Dial signal sending circuit, 6...Busy tone detection circuit, 7...CPU Fig.

Claims (1)

[Scope of Claims] Telephone number storage means for storing a plurality of telephone numbers read from an inserted storage medium; and a dial for randomly determining the dialing order of the telephone numbers stored in the telephone number storage means. It is characterized by comprising a dialing order determining means, and a dialing means for dialing the corresponding telephone number while accessing the corresponding telephone number in the telephone number storage means in accordance with the dialing order determined by the dialing order determining means. dial dialing circuit.