JP2905288B2 - Phone terminal - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a telephone terminal that exchanges information via a predetermined transmission path.

[Conventional technology]

In recent years, ISDN (Integrated Services Digital Communication Network) has been improved, and data terminal devices and ISDN telephone terminals that transmit and receive data using this ISDN are gradually being put into practical use.

[Problems to be solved by the invention]

By the way, as a telephone terminal including an ISDN telephone terminal, one having various functions is desired, and it is desired that a new function applicable to the telephone terminal is provided and put to practical use.

The present invention has been made in view of the above-described circumstances, and has a function that allows an operator to later know where an incoming call has come from when the incoming call is made when the operator is absent. It is intended to provide.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a storage means for storing a calling number of a calling terminal, detecting whether or not a call is answered off-hook at the time of receiving a call, and detecting that the response is detected. While storing the calling party number of the calling terminal received from the line with the identification information of the response in the storage means,
If no response is detected, the calling number of the calling terminal received from the line is added to the unanswered identification information and stored in the storage means, and the calling number stored in the storage means is stored. Display control means for reading and displaying the number, and reading and displaying the calling number stored in the storage means irrespective of the attached identification information, or displaying only the calling number to which the unanswered identification information is attached. Selecting means for selecting whether to read and display.

[Action]

In the telephone terminal having the above-described configuration, when a call is received, the calling number is stored by attaching a response or unanswered identification, and all the stored calling numbers are read out and displayed, or the unanswered identification is added. If it is possible to select whether only the calling number is displayed, the operator displays all the calling numbers, so that the telephone number of the called party, whether answered or not answered, can be retrieved. By displaying only the calling number to which the identification of unanswered is given, the telephone number of the other party to which no response was made can be known later.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram of one embodiment of a telephone terminal according to the present invention. The telephone terminal of this embodiment is configured as an ISDN telephone terminal. The ISDN telephone terminal includes a processor 1 for performing overall control, a ROM 2 in which a control program of the processor 1 is stored, and an ISDN telephone terminal. RAM 3, which stores various kinds of unique information such as a calling address (calling number) of the other party, an operation display section 4 having various operation keys and a display, and a tone generation circuit 5 for generating various tone signals
A speaker 6 for outputting a tone signal, an interface circuit 7 functioning as an interface with the ISDN network termination device NT, and a LAP-D control unit 8 for realizing the second layer signal processing of the ISDN user / network interface. A voice signal converter 9 for converting an analog voice signal for a call into a digital signal that can be handled by ISDN; and a handset 10 for a call.

FIG. 2 is a diagram showing a basic transmission procedure of the above ISDN telephone terminal. Referring to FIG. 2, the calling terminal first sends a call setup message SETUP to ISDN to request a call setup with the called terminal, and the ISDN sends a call setup message SETUP to the designated called terminal. Make a call.

Upon receiving the call setup message SETUP from the calling terminal, the ISD
N is a call setup acceptance message CALL for notifying the call setup status Send PROC to the calling terminal.

On the other hand, the receiving terminal that has received the call setup message SETUP from ISDN starts ringing to ring the operator of the terminal upon detecting an incoming call, and sends a calling message ALERT to ISDN. As a result, ISDN sends a call message ALERT to the calling terminal to notify that the called terminal has been called. Note that the call message ALERT is repeatedly output at an appropriate cycle.

At the called terminal, when the operator who hears the ringing tone picks up the handset 10 and detects that the handset has gone off-hook, the output of the calling message ALERT is stopped and the response message CON is output.
N to ISDN, which causes ISDN to respond
An ONN is sent to the calling terminal to notify that the called terminal has accepted the call.

ISDN sends a response confirmation message CONN to the called terminal. AC
K is sent to confirm the response of the called terminal, at which point an information channel for data transmission is established between the calling terminal and the called terminal.

As a result, a call can be made between the calling terminal and the called terminal, and a call can be made between the respective operators.

When the call ends and the calling terminal operator first goes on-hook, the calling terminal issues a disconnect message DISC.
Send to ISDN to request release of information channel, then
ISDN sends a disconnection message DISC to the destination terminal to notify the recovery of the information channel.

As a result, when the destination terminal responds to the ISDN with a release message REL for notifying the completion of the channel disconnection, the release message REL is transmitted from the ISDN to the calling terminal. When the channel release is completed, the calling terminal issues a release completion message REL. COMP ISD
N to that effect, so that the ISDN releases the release complete message REL By transmitting COMP to the destination terminal, the release of the information channel is established, and the information channel set between the calling terminal and the destination terminal is completely released.

In this way, an information channel is set between the calling terminal and the called terminal, a call is made between operators, and the information channel is released.

Also, after the end of the call, the operator of the called terminal can go off-hook first to release the information channel. In this case, a disconnection message DISC is sent from the called terminal to request the release of the information channel.

By the way, in this embodiment, when the call setup message SETUP from ISDN is received in the above procedure, the ISDN telephone terminal as the destination terminal receives the call setup message SETUP.
The calling address (calling number) of the calling terminal included in RAM3
And a function for displaying the stored information.

When the originating address is stored in the RAM 3 and displayed, the processor 1 can perform various controls. That is, as one method of control, the originating address included in the call setup message SETUP from ISDN in all cases, whether a response is made at the time of an incoming call or a response is not made due to absence, etc. Is stored in RAM3, and in this case, RAM3
All the addresses stored in the RAM 3 are displayed, or the addresses stored in the RAM 3 when no response is made at the time of an incoming call, that is, only the answering addresses are displayed. It has become.

Another control method is to store the calling address included in the call setup message SETUP from ISDN as the answering address in the RAM 3 only when a response is not made due to an absence or the like at the time of an incoming call. At this time, control is performed so that the answering machine address stored in the RAM 3 is displayed.

FIG. 3 is a diagram showing a configuration example of the operation display unit 4 of the ISDN telephone terminal according to the present embodiment. The operation display unit 4 shows that the ISDN telephone terminal is set to the transfer mode as a display. Lamp 4g for display, and liquid crystal display for displaying various guidance to the operator and the above-mentioned address.
4h is provided. As operation keys, in addition to a numeric keypad 4a for inputting numerical information such as a destination telephone number, a source address display key 4b for displaying all source addresses stored in the RAM 3 on the liquid crystal display 4h. An originating address when no response is made when receiving a call, that is, an answering address display key 4c for displaying the answering address on the liquid crystal display 4h, and an originating address for clearing the address stored in the RAM 3. A clear key 4d is provided.

Next, a processing operation in the ISDN telephone terminal having such a configuration will be described.

FIGS. 4A and 4B are flowcharts showing a first control example. In the first control example, the source address is set to RA
When the data is stored in the M3, the processor 1 performs a storage process as shown in FIG. That is, upon receiving the call setup message SETUP from ISDN (step S1), the called terminal extracts the calling address from the call setup message SETUP (step S2), regardless of whether the handset 10 is taken up (ie, Whether or not you answered the incoming call)
The data is stored in the RAM 3 (step S3).

When the operator wants to know the originating address stored in the RAM 3, a display process as shown in FIG. 4B is performed.
That is, when the operator presses the calling address display key 4b (step S4), the processor 1 reads the first calling address from the RAM 3 and displays it on the liquid crystal display 4h (step S5).

When the operator further presses the originating address display key 4b (step S6), it is determined whether or not the next originating address is stored in the RAM 3 (step S7). When the next originating address exists, the process returns to step S5. Go back and show this.

In this manner, all the calling addresses that have received a call are stored in the RAM 3, and the operator knows the telephone number of the called party, that is, the calling terminal, at any time by sequentially displaying the telephone numbers of the calling terminals. Therefore, it is not necessary to write down the telephone number of the other party in a memo or the like each time, and it is possible to make a call to the necessary other party by displaying the telephone number as described above. In addition, since the telephone number of the other party who did not respond due to an absence or the like can be known from the above display, for example, it is possible to tell the other party which phone received a call during the absence. It can be easily grasped without the trouble of the operation.

When the first control example is adopted for the ISDN telephone terminal, the operation display unit 4 may not be provided with the answering machine address key 4c.

FIGS. 5A and 5B are flow charts showing a second control example. In the second control example, when the originating address is stored in the RAM 3, the fifth
A storage process as shown in FIG. That is, when receiving the call setup message SETUP from ISDN (step S11), the called terminal extracts the calling address from the call setup message SETUP (step S12), and then determines whether the handset 10 is taken off-hook. It is determined whether or not it is (step S13). As a result of this determination, only the calling address when the telephone is not off-hook (that is, when no response is made to the incoming call) is stored in the RAM 3 as the answering address (step S14).

When the operator wants to know the answering address stored in the RAM 3, a display process as shown in FIG. 5B is performed. That is, when the operator enters the absence address display key 4c
Is pressed (step S15), the processor 1
, The first answering address is read out and displayed on the liquid crystal display 4h (step S16).

When the operator further presses the answering address display key 4c (step S17), it is determined whether or not the next answering address is stored in the RAM 3 (step S18). Step S16
Return to displaying this.

In this manner, only the answering address when no answer is made due to an absence or the like is stored in the RAM 3, and the operator sequentially displays only the telephone numbers of the other party who did not respond due to the absence or the like. As a result, for example, it is possible to clearly and surely grasp which party has received a call while away from home without having to perform any operation on the other party. Can be.

In the case where the second control example is adopted for the ISDN telephone terminal, the operation display section 4 may not be provided with the calling address key 4b.

FIGS. 6A and 6B are flow charts showing a third control example. In the third control example, when the originating address is stored in the RAM 3,
A storage process as shown in FIG. That is, upon receiving the call setup message SETUP from ISDN (step S21), the called terminal extracts the calling address from the call setup message SETUP (step S22), and then determines whether the handset 10 is taken off-hook. It is determined whether or not it is (step S23). As a result, if it is not off-hook (that is, if there is no response to the incoming call), a non-response flag is added to the originating address and stored in the RAM 3 (step S24). On the other hand, when it is determined in step S23 that the hook is off-hook (when a response is made), the originating address is attached to, for example, a response flag and stored in the RAM 3 (step S25).

When the operator wants to know the originating address stored in the RAM 3, display processing as shown in FIG. 6B is performed.
That is, in the third embodiment, the operator can select and press either the calling address display key 4b or the answering address display key 4c, and the operator can press the calling address display key 4b.
Is selected and pressed (step S26), FIG. 4 (b)
The same processing as shown in (1) is performed, and all the originating addresses stored in the RAM 3 can be read and displayed regardless of whether the flag is a response or a non-response (steps S27 to S29). On the other hand, when the operator does not use the calling address display key 4b,
When 4c is selected and pressed (step S30), the same processing as shown in FIG. 5 (b) is performed, and among the outgoing addresses stored in the RAM 3, those with the unacknowledged flag, ie, Only the answering machine address can be read and displayed (steps S31 to S33).

As described above, in the third control example, the operator can select whether to display all the outgoing addresses or only the outgoing address, and the operator can respond to the incoming call regardless of whether the call is answered or not answered. If you want to know the telephone numbers of all the other parties, you can operate key 4b,
Further, when it is necessary to know only the telephone number of the other party to which no response was made due to an absence or the like, the key 4c may be operated, so that the operability as required can be improved.

In each of the above control examples, when the operator leaves the seat, for example, the departure address clear key 4d is pressed, and the RA
If the calling address stored in M3 is cleared, when returning to the seat, the operator can easily know only the telephone number of the called party who received the call while away from the desk.

〔The invention's effect〕

As described above, according to the telephone terminal of the present invention, when a call is received, the calling number is stored with identification of the response or unanswered, and all the stored calling numbers are read out and displayed, or If it is possible to select whether to display only the calling number with identification, the operator displays all calling numbers, and the called party who has received the call regardless of whether the call has been answered or not answered. By displaying only the calling number to which an unanswered identification has been given, the telephone number of the other party to which no response has been made can be known later.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of a telephone terminal according to the present invention, FIG. 2 is a diagram showing a basic transmission procedure of an ISDN telephone terminal, FIG.
The figure shows a configuration example of the operation display unit of the telephone terminal of FIG. 1,
FIGS. 4 (a), (b), FIGS. 5 (a), (b), FIGS. 6 (a), (b) are flowcharts showing examples of processing operations of the telephone terminal of the present invention. DESCRIPTION OF SYMBOLS 1 ... Processor, 2 ... ROM, 3 ... RAM, 4 ... Operation display part, 5 ... Tone generation circuit, 6 ... Speaker, 7 ... Interface circuit, 8 ... LAP-D control part, 9 … Voice signal converter, 10… Handset, 4a… Numeric keypad, 4b… Calling address display key, 4c… Answering machine address display key, 4d… Calling address clear key, 4h… LCD display, SETUP …… Call setup message

Claims (3)

(57) [Claims] 1. A storage means for storing a calling number of a calling terminal, detecting whether or not a call has been received by off-hook when receiving a call, and receiving a response from the line when the response is detected. The calling number of the calling terminal is added to the calling number of the calling terminal and stored in the storage means. If no response is detected, the identification information of the calling terminal received from the line is not responded to the calling number of the calling terminal. Storage control means for storing the calling number stored in the storage means, displaying the calling number stored in the storing means, and displaying the calling number stored in the storing means regardless of the attached identification information. And a selection means for selecting whether to read and display only the calling number to which the unanswered identification information is attached or to display the calling number. 2. The telephone terminal according to claim 1, wherein said selection means selects a display by pressing a predetermined key of an operation unit. 3. The telephone terminal according to claim 1, further comprising an erasure instruction means for instructing erasure of the calling number stored in said storage means.