JPH05284206A - Communication terminal equipment having automatic callback function - Google Patents

Abstract

PURPOSE:To attain quick callback to a call whose arrival is noticed during talking when a talking call is finished by providing a means interrupting an incoming call and an automatic dial means extracting a stored caller number and making dialing to the terminal equipment so as to immediately interrupt the call when the talking party does not immediately reply the call whose arrival is noticed. CONSTITUTION:An entry means 33 such as a key board receives an instruction as to whether automatic callback is to be executed. When other incoming call comes during talking, a storage device 38 stores a caller number of the incoming call. A control section 37 is provided with an interrupt means interrupting an incoming call after storing the said caller number in the storage device 38 and with an automatic dial means extracting the caller number stored in the storage device 38 and making dialing the number when the talking call is finished. The control section 37 uses the means above to execute the automatic callback mode upon the receipt of an instruction of the execution of automatic callback from the entry means 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control system for a communication terminal device connected to a communication network, and for example, an automatic system suitable for communication control when an incoming call during communication cannot be immediately answered. The present invention relates to a call back communication terminal device and an automatic call back communication terminal control method.

[0002]

2. Description of the Related Art In a conventional analog telephone public network, an incoming call during communication can be answered only by call waiting.
In this call waiting, when there is another incoming call during communication, it is possible to temporarily hold the communicating party and connect the other incoming call to make a call.

However, since the network does not have a function of notifying the called subscriber of the telephone number of the calling subscriber before communication, if the call waiting is rejected, the called subscriber calls the calling subscriber. It is impossible to fix.

On the other hand, ISDN (Integrated Services Digital Network) enables in-communication incoming call notification to notify the incoming call to the subscriber even when the subscriber is in communication and there is no free B channel. At this time, the telephone number of the calling subscriber is also notified. These functions are described in detail, for example, in Technical Reference Material “INS Net Service Interface”, Third Volume, published by the Telecommunications Association. When an incoming call notification during communication is given, the receiving subscriber can take a call, such as disconnecting the call during call waiting and answering the call for incoming call notification and ignoring the call for incoming call notification during communication. is there.

[0005]

However, in the conventional method, and are capable of immediately answering the call of the incoming call notification, but in the case of, the calling subscriber can hear the ringing tone, The subscriber will continue to wait until the originating subscriber himself gives up on the connection. Considering the actual usage of the telephone, for example, when busy on an important telephone, etc., the called subscriber responds with or even if the incoming call notification is given, even if the called subscriber interrupts the important telephone call. It is hard to imagine. That is, when the incoming call notification is made during communication, it is considered that the call is most often ignored. Therefore, there is a problem that the calling subscriber wastes time and the called subscriber loses the opportunity to answer the call of the incoming call notification.

An object of the present invention is to solve the problems of such a conventional method in ISDN having a caller ID notification function,
If you do not answer the incoming call notification immediately,
The purpose is to immediately disconnect the call, and promptly call back and make a call to the call of the incoming call notification during communication when the call during communication ends.

[0007]

SUMMARY OF THE INVENTION According to the present invention, in a communication terminal device having a caller number notification function and connected to a communication network, when there is another incoming call during communication, the incoming call is originated. Storage means for storing the caller's number, disconnection means for disconnecting the incoming call after storing the caller's number in the storage means, and whether or not the call previously in communication is terminated and automatic call back is performed. When there is an instruction for automatic transmission, the automatic transmission means for extracting and transmitting the caller number stored in the storage means is provided.

Further, it is possible to further have an input means for accepting an instruction of automatic transmission to determine whether or not to call back automatically and for instructing automatic transmission to the automatic transmission means.

The input means receives an automatic call instruction in advance and instructs the automatic call means, and the automatic call means stores the call stored in the storage means at the time when the call that was previously in communication is terminated. The person's number can be retrieved and automatically sent.

Further, the input means accepts an automatic transmission instruction and instructs the automatic transmission means at the time point when the call which was previously in communication is terminated, and the automatic transmission means receives the automatic transmission instruction. Alternatively, the caller number stored in the storage means may be taken out to make the call.

When a call is sent by the automatic sending means,
It further has output means for notifying the automatic transmission state. The output means can output a voice output and / or a display output. For example, a ringing of a bell or blinking of a lamp notifies the automatic transmission state.

Further, the storage device stores the calling party number for all of the plurality of incoming calls when there are a plurality of incoming calls during communication,
The output means outputs the caller numbers of a plurality of incoming calls after the call being communicated is completed, the input means receives an instruction to select the caller numbers to be sent, and the automatic call means is used by the automatic call means. You can call the person number.

[0013]

The input means can accept an automatic call instruction indicating whether or not to call back automatically. This automatic call instruction can be received in advance or after the communication is completed. Further, when there are a plurality of incoming calls during communication, the input means receives an instruction to select a caller number to be sent. When an automatic call instruction is received in advance, when there is another incoming call during communication, the storage means stores the caller number of the incoming call, and when there are multiple incoming calls during communication. Stores the caller ID for all of the plurality of incoming calls. The disconnecting means disconnects the incoming call after storing the caller number. The automatic transmission means automatically makes a call to the stored caller number at the time when the previously communicating call ends.

Further, when the input means accepts the automatic call instruction after the end of the communication, the input means accepts the automatic call instruction and instructs the automatic call means at the time when the call which was previously in communication is ended. When there is an automatic call instruction, the sending means extracts the caller number stored in the storage means and sends the number. If there are multiple incoming calls,
The automatic transmission means transmits to the selected caller ID.

The output means outputs a voice output and / or a display output to notify the automatic outgoing call state, or when there are a plurality of incoming calls during communication, a plurality of incoming calls after the call during communication is completed. The caller ID of is output.

[0016]

EXAMPLES Examples of the present invention will be described in detail below.

FIG. 1 is a block diagram showing a hardware configuration of a communication terminal device according to the present invention. FIG. 2 is a signal sequence diagram between the communication terminal and the network according to the embodiment. FIG. 3 is a state transition flow chart showing an embodiment of the processing procedure of the present invention.

In FIG. 1, reference numeral 32 is an output means, which is a display such as a liquid crystal display. The output means 32 displays whether the communication mode is the automatic transmission mode, the operating state of the communication terminal, the function selection menu, or the like. Reference numeral 33 is an input means such as a keyboard, and an operator of the communication terminal inputs a telephone number of a communication partner and a function number for setting an operation mode such as automatic call back.
Reference numeral 34 is a handset for transmitting and receiving voice. 35 is
It is an output means such as a speaker, and allows a signal sound such as a ring tone and a received voice to be heard. Reference numeral 36 is a network to which communication terminals are connected. Specifically, ISDN (Inte
grated Services Digital Network). 31 is
A control device, which controls each of these devices and communication connection control, stores a control unit 37 for controlling the operation of each of the above devices in accordance with a program stored therein, and an operation mode and a caller number. The storage device 38 of the storage means is provided. The input unit 33 accepts an instruction as to whether or not to perform automatic call back, and the storage device 38 stores the caller number of the incoming call when there is another incoming call during communication. The control unit 37 stores the calling party number in the storage device 38 and disconnects the incoming call, and stores it in the storage unit when the previously communicating call ends. And an automatic transmission means for extracting and transmitting a caller number. The control unit 37 executes the automatic call back mode when the input unit 33 receives an instruction to execute the automatic call back by these means. Further, the control unit 37 may set the automatic call-back mode in a fixed manner in advance so as to execute the automatic call-back mode without accepting the above-mentioned instruction in the input unit 33.

The operation of each unit shown in FIG. 1 will be described below with reference to the signal sequence diagram shown in FIG. 2 and the state transition flow diagram shown in FIG. FIG. 2 shows a signal sequence exchanged between the communication terminal and the ISDN network. Figure 3
The flowcharts of (a) processing when a call arrives during call setting and communication and (b) call release and automatic call back mode processing are shown.

First, on the state transition diagram shown in FIG. 3, the call setting signal is received in the empty state (step 100) (step 101). Upon receiving the call setting signal, the control device 31 determines whether there is another call already in communication (step 102). If there is no other call in communication, normal call setting processing is performed (step 106). In this case, "in a call" means that there are two B channels in ISDN, for example, if both are in a call or if there is only one terminal, a call is being made using one line. In this case, even if the other line is idle, the terminal is blocked and the call is in progress. Further, when there are a plurality of terminals and a telephone number is assigned to each line, a call is in progress when each line is busy. If there is another call in communication, it is determined whether the operation mode is automatic call back (step 103). If it is not set to call back automatically, answer by call waiting etc. (Step 1
07). When the automatic call back is set, the caller number is stored in the storage device 38 inside the control device 31. In this case, in the signal sequence shown in FIG. 2, if there is an incoming call during communication (signal sequence 201), it is regarded as a new call (hereinafter referred to as a second call) setup. In the signal scene, the call setup signal is 202, and the caller number is included in the setup signal of the second call. At this time, display 3
In 2, an incoming call notification and a caller number are displayed. Thereafter, the disconnecting means completes the release of the second call (step 10
5) Send a signal to the network 36 and empty (step 10
8) Return to the state. In the signal sequence, the release is completed (signal sequence 203). At this time, the disconnecting means sends the called user busy code upon completion of the release to notify the caller of the second call that the call is in progress. A user code is a predetermined service code, and a busy code is assigned to a specific code. By sending this busy code when release is completed, the second
The call originator of the call hears a busy tone, indicating that the call is in progress. Or, after accepting the call setup for the second call,
The signal may not be returned to the ISDN network. In this case, the ISDN network retransmits the call setup signal, but the control unit 37 of the terminal is set to ignore the retransmitted call setup signal. In this way, by making no response to the call setting signal, the caller of the second call can hear the busy tone.

After that, the first communication (signal sequence 20
The call of 1) is completed disconnection-release (signal sequence 204).
Then (in the signal sequence diagram, it is the disconnection of the terminal-side activation, but the disconnection of the network-side activation is of course no problem). In the state transition flow diagram, if it is the disconnection of the terminal-side activation, the disconnection request (step 110 ), Call release (step 111) and release completion (step 112). If it is a disconnection of network-side activation, a release request (step 11
Each process of 3) and release completion (step 114) is executed. Next, it is determined whether the operation mode is automatic call back (step 115). If not automatic recall
The control unit 37 erases all the caller numbers stored in the storage device 38 (step 124), transitions to an empty state and ends (step 125). If the operation mode is automatic call back, the control unit 37 determines whether or not the caller number is stored in the storage device 38 (step 116), and if not stored, transitions to an empty state and ends (step 12).
5). If it is stored, the caller number is displayed on the display 32 (step 117). When there are a plurality of caller numbers, a plurality of numbers are displayed on the display 32. Next, the input means 33 receives an instruction from the terminal operator as to whether or not to execute a call back (or, if there are a plurality of caller numbers, one of them is selected), and The result is judged (step 118). In this case, for example, after the call is finished, whether or not to automatically call back is displayed together with the caller number so that a selection instruction can be given.
When the call back is not executed, the control unit 37 causes the storage device 3
All caller numbers stored in No. 8 are erased (step 124), the state is changed to an empty state and the process ends (step 12).
5). When calling back is performed, the control unit 37 executes a call setting request (steps 119 and 121) as a new call and transmits a call setting signal in which the selected caller number is set as the callee number ( Step 122). From this point onward, the call is similar to the normal call origination process, and the call is made (step 12
3) After transitioning to the state, if there is a response from the other party, the communication state is set. In the signal sequence, these are 205 and 206. For the first call, after executing the call setting request (step 119), the control unit 37 deletes only the selected caller number from the storage device 38 (step 120),
The process transits to the empty (step 125) state and ends.

In the present embodiment, the method of executing whether or not to perform the call back (step 118) is explained by receiving the instruction of the terminal operator, but of course, the call back is automatically performed without waiting for the input from the terminal operator. It is also possible to do. In this case, in order to notify the terminal operator that the automatic call back is being executed, it is possible to display it on the display 32 and to hear the ringing sound or the like from the speaker 35.

As described above, according to the present invention, when a communication terminal receives a new incoming call, the caller number included in the incoming call setting signal is stored and the incoming call is disconnected. As a result, the calling subscriber does not needlessly wait in the calling state. Also, after the communication is completed, the caller number that you have stored will be automatically called back and sent.
You will not forget to hang it up, and communication opportunities will increase.

[0024]

In the communication terminal device having the caller ID notification function, when the call of the incoming call notification during communication is not immediately answered, the call is immediately disconnected and the call during communication is terminated. Promptly call back to the call of the incoming call notification during communication.

[Brief description of drawings]

FIG. 1 is a block diagram showing a hardware configuration of a communication terminal device according to the present invention.

FIG. 2 is a signal sequence diagram between a communication terminal and a network showing an embodiment of the present invention.

FIG. 3 is a state transition flow chart showing an embodiment of the present invention.

[Explanation of symbols]

31 ... Control device, 32 ... Display such as liquid crystal, 33 ... Keyboard, 34 ... Handset, 35 ... Speaker, 36 ... ISDN to which communication terminal is connected, 37 ... Control unit, 38 ... Storage device.

Claims (8)

[Claims] 1. A communication terminal device having a caller number notification function, which is connected to a communication network, and stores a caller number of the incoming call when another incoming call is received during communication. , There is disconnection means for disconnecting the incoming call after storing the caller number in the storage means, and an automatic call-out instruction as to whether or not to automatically call back after the call that was previously in communication is terminated. A communication terminal device having an automatic call back function, comprising: and an automatic transmission means for taking out and transmitting a caller number stored in the storage means. 2. The automatic call-back according to claim 1, further comprising input means for receiving an instruction of automatic call-out to determine whether or not to perform automatic call-back and for instructing automatic call-out to the automatic call-out means. A communication terminal device having a function. 3. The storage means according to claim 2, wherein the input means accepts an automatic call instruction in advance and instructs the automatic call means, and the automatic call means ends the call that was previously in communication. A communication terminal device having an automatic call-back function, characterized in that a caller number stored in is retrieved and automatically transmitted. 4. The input device according to claim 2, wherein the input means receives an automatic call instruction and instructs the automatic call means when the call that was previously in communication is completed. If there is, a communication terminal device having an automatic call back function, characterized in that the caller number stored in the storage means is retrieved and transmitted. 5. The automatic call-back function according to claim 1, further comprising output means for notifying an automatic transmission state when the automatic transmission means makes a call. Communication terminal equipment. 6. The communication terminal device according to claim 5, wherein the output means is voice output and / or display output. 7. The storage device according to claim 5 or 6,
When there are a plurality of incoming calls during communication, the caller numbers of all of the plurality of incoming calls are stored, and the output means outputs the caller numbers of the plurality of incoming calls after completion of the call during communication and the input means. Is
A communication terminal device having an automatic call back function, characterized in that an automatic transmission means receives a selection instruction of a caller number to be transmitted, and the automatic transmission means makes a call to the selected caller number. 8. A terminal control method for a communication terminal device connected to a communication network, having a caller number notification function, wherein the caller number of the call when the call is received during communication. The caller number is stored, the incoming call is disconnected after the caller number is stored, and at the end of the previously communicating call, an instruction as to whether or not to automatically call back is accepted, and automatic call back is performed. A terminal control method, characterized in that when making a call, a call is made to a stored caller ID.