JP2641308B2 - Communication terminal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to a communication terminal device used in a communication system in which a plurality of communication terminal devices are connected to one line.

[Prior art]

FIG. 5 is a system configuration diagram showing a communication system to which a conventional communication terminal device disclosed in, for example, JP-A-1-168155 is connected. In FIG. 5, reference numerals 2a, 2b, and 2c denote telephone terminal devices used for telephone calls, 3 denotes a telephone terminal device on the calling side, 4 denotes a data terminal device used for data transmission and reception,
Is a facsimile terminal (FAX), 6 is a bus line connecting these terminals, 7 is a line terminator connected to a subscriber line, and 8 is an integrated services digital network (ISDN).
ISDN exchange. FIG. 6 is a sequence diagram showing a communication procedure. Next, the operation will be described. When the telephone terminal 3 on the calling side performs a calling operation, a call setup message (SETUP) 101 is transmitted to the ISDN exchange 8. ISDN exchange 8
Receives the SETUP 101, the calling telephone terminal 3
, A call setup acceptance message (CALL PROC) 102 is transmitted, and a call setup message (SETUP) 103 is transmitted to the called side. The SETUP 103 is received by each terminal device on the called side via the bus line 6, and the telephone terminal device 2a receives the SETUP 1
When the content of 03 is analyzed, it can be recognized that the other party is a communicable terminal device, so a call message (ALERT) 104 is transmitted. Similarly, the telephone terminals 2b and 2c also transmit a call message (ALERT) 105. However, the data terminal device 4 and the FAX 5 ignore the SETUP 103 because they recognize that they cannot communicate with the other party. Upon receiving the ALERT 104 from the telephone terminal 2a, the ISDN exchange 8 transmits a call message (ALERT) 106 to the telephone terminal 3 on the calling side. Here, if the operator of the telephone-based terminal device 2a performs a response operation before the operator of the telephone-based terminal devices 2b and 2c, the telephone-based terminal device 2a sends a response message (CONN) 107 first. Send. Upon receiving the CONN 107, the ISDN exchange 8 transmits a response message (CONN) 108 to the telephone terminal 3 on the calling side, and also a response confirmation message (CONN AC) to the telephone terminal 2a.
K) 109 and a release message (REL) 110 for the telephone terminals 2b and 2c are transmitted to the called side. Upon receiving this REL110, the telephone terminal devices 2b and 2c
A release completion message (REL COMP) 112 is transmitted to be empty. Then, the telephone terminal device 2a receives the CONN ACK 109 and enters a communication state. On the other hand, upon receiving the CONN 108, the telephone terminal 3 on the calling side transmits a response acknowledgment message (CONN ACK) 111 to be in communication with the telephone terminal 2a.

[Problems to be solved by the invention]

Since the conventional communication terminal device is configured as described above, even when the operator of a certain telephone-based terminal device is waiting for an incoming call from a specific partner, another operator is not allowed to receive the incoming call from the specific partner. May respond first with another terminal device connected to the same bus line 6, and the operator of the telephone-based terminal device may waste time before communicating with a specific party. There was a problem that operation and time were spent. The present invention has been made in order to solve the above-described problem, and when waiting for a call from a specific partner, the specific terminal first has a higher probability than other terminal devices on the same bus line. An object of the present invention is to obtain a communication terminal device that can be connected to a partner.

[Means for Solving the Problems]

The communication terminal device according to the present invention, when the number information is input to the input / output unit, registers the information in the registration unit, and when there is an incoming call, the caller in the call setting message received from the line by the comparing unit is received. The number information is compared with the information registered in the registration unit. If there is a match, the response unit sends a response message to the line, and when a response confirmation message to the response message is received, a tone is generated. An instruction is given to the unit to transmit a predetermined tone signal to the line, and a confirmation notification is sent to the input / output unit.

[Action]

The responding means according to the present invention transmits a response message immediately when the comparing means confirms that the registered number information has the same as the actually received caller number information, When the confirmation message is received, a tone signal is transmitted and a confirmation notification is made to the operator.

【Example】

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a communication terminal device, 11 is an input / output unit for inputting number information, 12 is a calling number table (registering unit) for registering number information, and 13 is a tone generating unit for generating a tone signal. is there. Reference numeral 14 denotes a terminal control unit which has a comparison unit and a response unit and performs communication control and terminal control, and is realized by, for example, a microcomputer. In this case, the comparing means and the responding means are realized by programs for performing the comparing process and the responding process, respectively. Reference numeral 15 denotes a line interface for connecting the bus line 6. FIG. 2 is a system configuration diagram showing a communication system using the communication terminal device 1, and FIG. 3 is a sequence diagram showing a communication procedure. Next, the operation will be described with reference to the flowchart shown in FIG. The operator inputs the number of the other party who wants to receive an incoming call into the input / output unit 11 in advance. The input number is accepted by the terminal control unit 14, and the terminal control unit 14 registers this number in the calling number table 12. To cancel the registration, a key input to that effect may be made to the input / output unit 11 in the same manner. Further, a plurality of registered numbers may be provided. When the telephone terminal 3 on the calling side makes a call to the communication system to which the communication terminal 1 is connected,
The SETUP 101 is transmitted to the ISDN exchange 8 as in the conventional case. Upon receiving this SETUP 101, the ISDN exchange 8 transmits a CALL PROC 102 to the telephone terminal 3 on the calling side and also transmits a SETUP 103 to the called side. When the communication terminal device 1 receives the SETUP 103, the terminal control unit 14 analyzes the contents and determines whether or not communication with the other party is possible. If communication is not possible, the terminal control unit 14 ignores the SETUP 103 and returns to an empty state ( Step ST1). If communication is possible, the calling number table 12 is searched (step ST2), and the received SET
It is checked whether or not there is any one that matches the source number information included in UP103 (step ST3). If there is no match, an ALERT 104 (see FIG. 6) is transmitted as in the conventional case (step ST4), and the input / output unit 11 displays a general incoming call (step ST5). When a response operation is performed by the operator (step ST6), CONN 107 is transmitted (step ST7), and the CONNACK 109 is transmitted from the ISDN exchange 8.
Is received, communication is established (step ST8). If there is a match in the calling number table 12,
Immediately, CONN 107 is transmitted (step ST9), and a priority incoming call is displayed on input / output unit 11 (step ST10). And ISDN
When the CONN ACK 109 is received from the exchange 8 (step ST1)
1) A tone signal is transmitted from the tone generator 13 to the connected channel (step ST12), and the communication is established when the operator performs a response operation (step ST13). It should be noted that the tone signal is transmitted in order to prevent silence at the calling terminal from the time of connection until the operator performs a response operation. The other telephone terminals 2a and 2b wait for a response operation and
Since N107 is transmitted (see FIG. 6), the communication terminal device 1 does not receive the CONN ACK 109 earlier than the communication terminal device 1. In addition,
In steps 11 and 13, when the waiting state has continued for a certain period of time or more, a release process may be performed. Note that the display of the general incoming call of the input / output unit 11 in the above embodiment may be visual or may be acoustic. Further, the tone signal is transmitted from the tone generation unit 13 to the calling terminal, but a talker (message by voice) or the like may be used. In the above embodiment, the telephone-type terminal device has been described. However, the terminal device may be another type of terminal device as long as it transmits the CONN 107 upon receiving the SETUP 103 and requires a response operation of the operator. It has the same effect as. In the above-described embodiment, the priority connection for transmitting the CONN 107 is performed immediately when the registration number information in the calling number table 12 matches the transmission source number information. It is also possible to always make a priority connection during a call.

【The invention's effect】

As described above, according to the present invention, the communication terminal apparatus compares the source number information in the call setup message with the number information registered in the registration unit, and immediately Since we have configured to send a response message,
A response message can be sent with priority to other terminal devices connected to the same bus line, and when waiting for an incoming call from a specific partner, an effect can be obtained with a very high probability of being able to connect to that partner first. There is.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a communication terminal device according to one embodiment of the present invention, FIG. 2 is a system configuration diagram showing a communication system to which the communication terminal device is connected, and FIG. 3 is communication according to one embodiment of the present invention. FIG. 4 is a sequence diagram showing a communication procedure of the terminal device, FIG. 4 is a flowchart showing a process when the communication terminal device receives a call, FIG. 5 is a system configuration diagram showing a communication system to which a conventional communication terminal device is connected, and FIG. FIG. 1 is a sequence diagram showing a communication procedure of a conventional communication terminal device. 1 is a communication terminal device, 11 is an input / output unit, 12 is a calling number table (registration unit), 13 is a tone generation unit, 14 is a terminal control unit (comparing means and response means), 6 is a bus line, and 8 is an ISDN exchange. . In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

(57) [Claims] 1. An input / output section for inputting number information and outputting a confirmation notice to an operator, a registration section for registering the number information input to the input / output section, and a tone for generating a tone signal. A generating unit, comparing means for comparing the caller number information in the call setting message received from the line at the time of receiving the call with the number information registered in the registering unit, and when the comparing means detects a match, Sending a response message to the line, receiving a response confirmation message to the response message from the line, causing the tone generator to output a predetermined tone signal to the line, A communication terminal device comprising: a response unit that outputs a confirmation notification.