JPH06178349A - Retransmitting method in communication terminal equipment - Google Patents

Abstract

PURPOSE:To make it possible to efficiently and surely perform the line connection between a call originating terminal and an incoming terminal without performing a dial operation by a call originator even when the incoming terminal does not exist within the distance range shown by an addition code. CONSTITUTION:An call originator dials the addition code of a base station 30 and the number of a portable telephone set 41 for being received at the portable telephone set 41 from a telephone set 10 and makes them be stored in a memory 10b. An exchange 20 calls the telephone set 41 from the base station 30, looking at the addition code. The exchange 20 notifies to the telephone set 10 the effect that the pertinent telephone set 41 does not exist and instructs the telephone set 10 to perform a retransmission. In the telephone set 10, the dial number is retransmitted to the exchange 20 after the originating dial number from a memory 10b and the addition code of the base station 30 are read, the addition code is deleted and the addition code of a new base station 30 is imparted. The exchange 20 calls the portable telephone set 41 through the base station 30 and performs the line connection of the telephone set 10 and the portable telephone set 41 by the response of the portable telephone set 410.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resending method of a communication terminal device relating to a cap-on / busy function and a resending function of a communication terminal in a communication network, which is used in a cellular telephone system or the like.

[0002]

2. Description of the Related Art Conventionally, according to a retransmission method in a communication terminal device of this type, when the called terminal of the other party is busy or cannot connect to the line due to a disconnection of the line, the telephone number dialed by the caller is used. I remember it. Then, the stored telephone number is automatically redialed by the caller operating the redial button. So-called retransmission (redial) is performed.

As a retransmission method in such a communication terminal device, there is a key telephone device disclosed in Japanese Patent Laid-Open No. 1-125096.

In this key telephone system, the telephone numbers of consecutive telephone numbers differing only in the last digit of the telephone number
Dial the phone number continuously until it responds in a circular fashion,
The capture rate of vacant station lines is high.

Further, a retransmission method in the next communication terminal device is known. FIG. 2 is a configuration to which a retransmission method in a conventional communication terminal device is applied. FIG. 3 is a sequence diagram in this configuration.

In FIG. 2, this example has a telephone set 2 as a calling terminal, a switching center 4 and another switching center 6. In FIG. 2 and FIG. 3, when the caller dials from the telephone 2 to make an incoming call to a specific telephone, the dialed number is sent through the exchange 4 to the other exchange 6 to which the receiving telephone is connected. In this case, the telephone set 2 stores the dial number sent to the exchange 4.

When the called telephone is in use, a signal indicating that the telephone is in use is returned from the exchange 6 to the exchange 4, and the exchange 4 sends a busy tone to the telephone 2. The caller hears the busy tone, determines that the called telephone is busy, and operates the telephone 2 to go on-hook.

After that, the telephone 2 sends again the dial number stored in the previous call to the exchange 4 in response to the operation of the resending instruction by the caller.

In the retransmission method in the communication terminal device of this conventional example, the dial number stored in the previous call is sent as it is when the call is reissued.

[0010]

By the way, a specific additional code such as "03, 04" according to the distance from the calling terminal to the called terminal, such as a cellular cellular phone communication network to which this conventional example is applied, is used. , In a communication network that connects by dialing the mobile phone number to receive a call from the calling terminal, if the called terminal does not exist within the distance range indicated by the additional code dialed, the connection can be established. It was not possible, and the caller had to add another additional code again, for example, enter "03" to "04" and redial.

The present invention solves such a conventional problem, and even when the called terminal is not within the distance range indicated by the additional code, the calling terminal can be efficiently and reliably operated without dialing by the caller. It is an object of the present invention to provide a retransmission method in an excellent communication terminal device capable of connecting a line between an incoming call terminal and a called terminal.

[0012]

In order to achieve this object, the present invention has a plurality of connection areas connected by a specific code, a communication terminal moves within the connection area, and an incoming communication terminal exists. This is a method of resending in the communication terminal device in the communication network for connecting the communication terminals by notifying the exchange of the additional code of the connection area and the terminal number of the incoming call, and when the communication terminal to be received exists in the specific connection area. Assuming that, notify the exchange of the additional code and the number of the communication terminal to be called,
When there is no communication terminal to receive in the corresponding connection area, the sending communication terminal selects the additional code of another connection area when resending, and the newly selected additional code and the telephone number of the communication terminal to receive are exchanged. To notify.

[0013]

In the resending method in the communication terminal device of the present invention having such a structure, when there is no communication terminal to receive the additional code in the corresponding connection area, when the retransmission is made, the transmitting communication terminal adds another connection area. By selecting the code and notifying the exchange of this newly selected additional code and the telephone number of the communication terminal to be called, the caller can dial even if the receiving terminal is not within the distance range indicated by the additional code. The line connection between the calling terminal and the called terminal can be efficiently and reliably performed without performing the above.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a retransmission method in a communication terminal device of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a cellular telephone system or the like to which the retransmission method in the communication terminal device of the present invention is applied. In FIG. 1, this example shows a telephone 10 and an exchange 2 connected to the telephone 10 by a line.
0 and base stations 30 and 31 connected to the exchange 20 by a line.
And mobile phones 40 and 41 that move and are wirelessly connected using the base stations 30 and 31 as service areas.

The telephone set 10 comprises a control unit 10a for controlling the telephone set 10 and a memory 10b.
It is connected to 0. The exchange 20 controls a mobile telephone network having different additional codes depending on the distance between the exchange 20 and the base station, and the base stations 30 to which different additional codes, for example, "03, 04", are respectively given. Three
It is connected to 1 by wire.

Next, the operation of the configuration of this embodiment will be described. First, when the caller tries to make an incoming call from the telephone 10 to the mobile telephone 41, the additional code “03” of the base station 30 and the number of the mobile telephone 41, for example, “12-34
Dial "567". In this case, the telephone 10
The control unit 10a stores the dial number "12-3" in the memory 10b.
4567 ”is stored.

The exchange 20 uses the dial number "12-345".
When "67" is received, the additional code "03" is identified and the mobile phone 41 is called from the base station 30. Here, since the mobile phone 41 does not exist in the connection area of the base station 30, the exchange 20 receives the notification from the base station 30 and notifies the phone 10 that the corresponding mobile phone 41 does not exist.

The caller receives the notification from the telephone 10 and determines that the portable telephone 41 is not present in the connection area of the base station 30, and instructs the telephone 10 to retransmit. Phone 1
0 is the dial number "12-34567" of the previous call stored in the memory 10b and the additional code "0" of the base station 31.
After reading "3", the additional code "0" of the base station 30 is read.
3 ”is deleted and the additional code“ 04 ”of the new base station 31 is added instead, and the dial number“ 12-34567 ”is retransmitted to the exchange 20.

The retransmitted dial number "12-3456
The exchange 20 which has received "7" calls the mobile phone 41 through the base station 31. Then, the line connection between the telephone 10 and the mobile phone 41 is performed according to the response from the mobile phone 41.

As described above, when the mobile phone is not within the expected connection area, the caller simply instructs the phone to resend without newly dialing, and the calling terminal can add an additional code for another connection area. Can be given and redialed.

In this embodiment, two base stations 30 and 31 having additional codes that differ depending on the distance have been described, but the present invention can also be applied to three or more base stations having different additional codes. In this case, the retransmission may be sequentially performed in the same manner as the above-described embodiment.

[0023]

As is apparent from the above description, in the retransmission method in the communication terminal device of the present invention, when there is no communication terminal which makes the incoming call in the connection area to which the additional code corresponds, the communication terminal which makes the transmission at the time of retransmission is Even when the receiving terminal is not within the distance range indicated by the additional code, the additional code of another connection area is selected and the switch is notified of the newly selected additional code and the telephone number of the communication terminal to receive the call. The effect that the line connection between the calling terminal and the called terminal can be made efficiently and reliably without the caller dialing.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration in an embodiment to which a retransmission method in a communication terminal device of the present invention is applied.

FIG. 2 is a block diagram showing a configuration to which a retransmission method in a conventional communication terminal device is applied.

FIG. 3 is a sequence diagram in the operation of the configuration shown in FIG.

[Explanation of symbols]

 10 telephones 10a control unit 10b memory 20 exchanges 30, 31 base stations 40, 41 mobile phones

Claims (1)

[Claims] 1. A switch having a plurality of connection areas connected by a specific code, a communication terminal moving in the connection area, and an additional code of the connection area in which the incoming communication terminal exists and the terminal number of the incoming call. Then, it is a resending method in a communication terminal device in a communication network for connecting communication terminals, assuming that the communication terminal to be called is in a specific connection area, and the additional code and the number of the communication terminal to be called are exchanged. When the communication terminal to receive the call in the corresponding connection area does not exist, the sending communication terminal selects the additional code of another connection area, and the newly selected additional code and the communication terminal A retransmission method in a communication terminal device, characterized in that a telephone number is notified to an exchange.