JPH0710081B2 - ISDN communication terminal device - Google Patents

Description

The present invention relates to an ISDN (ISDN) communication terminal device for use by connecting to an integrated service digital network.

"Prior Art" With the start of ISDN (Service Integrated Digital Network) service, it has become possible to exchange not only voice information but also non-voice digital information with a desired partner device. As is well known, when ISDN is used, a call setup message including a dial number (hereinafter, called number) of a calling side device is given to the called side device. Utilizing this, an ISN communication terminal device having an identification and incoming call function that allows an incoming call only when the calling number is a preset specific dial number when there is a call setup message has been developed. . In this type of ISDN communication terminal, a dial number registered as a speed dial is used as a dial number that allows incoming calls when an incoming call is identified.

[Problems to be Solved by the Invention] By the way, the speed dial is used for a person who frequently makes a call, and there may be a person who does not want to allow the incoming call. However, in the above-mentioned conventional ISDN communication terminal device, when an identification incoming call is made, if the dial number is registered in the speed dial memory, the incoming call can be received even if the user does not want to allow the incoming call. There was a problem of being allowed.

The present invention has been made in view of the above-mentioned circumstances, and an ISDN communication terminal capable of permitting incoming call only to a specific party designated by a user among dial numbers registered as speed dials when making an incoming call for identification. The purpose is to provide a device.

"Means for Solving the Problem" The present invention corresponds to each of the dial number storage means for storing the dial number of the desired partner device to which the speed dial is assigned and the dial number stored in the dial number storage means, Incoming call permission designating means for designating whether or not to permit incoming from the partner device, and when a call setup message is given from the network, the calling number in the call setup message is stored in the dial number storage means, In addition, an incoming call control means for permitting an incoming call to the call setting message is provided only when the incoming call permission is designated by the incoming call permission designating means.

[Operation] According to the above configuration, at the time of the identification incoming call, the call setting message from the network, which originates from the dial number stored in the dial number storage means, the dial number permitted by the incoming call permission designating means is sent from the network. Incoming calls are allowed only when given.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an ISDN communication terminal device according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a main control unit for controlling each unit of the apparatus, which is composed of a CPU (central processing unit) 1a and a memory 1b.
Each storage area in the memory 1b is used for control information such as a mode flag and a speed dial memory table. Here, the speed dial memory table stores a dial number of the partner device corresponding to each of the speed dial numbers (for example, 00 to 99) and an incoming call permission / inhibition designation flag for designating the incoming / outgoing call in the identification incoming call mode. Also, 2
Is a communication control unit, which performs control for line connection with a partner device and establishment of a data link, and at the same time controls transmission and reception of signals. Reference numeral 3 denotes a peripheral device control unit that controls the exchange of data with the peripheral device connected to this terminal device.
Reference numeral 4 denotes an operation control unit, which controls an operation detection circuit 4a for detecting the operation of various operation buttons provided on the operation panel of this device and a display control of an LCD (liquid crystal display) (not shown) provided on the operation panel. It is composed of a display control circuit for carrying out, and a handset circuit 4c for controlling transmission and reception of voice information in a handset (not shown).

Next, the operation of this ISDN communication terminal device will be described. According to the flow shown in FIG. 2, the user registers the speed dial number and designates whether to accept the incoming call at the time of the incoming call for identification. That is, when a partner device to be speed-dial registered occurs, the user dials the speed-dial number (any of 00 to 99) and the partner device dial corresponding to it, as in the case of registering a speed-dial number on a normal telephone. Enter the number (step S1). This dial number is the operation detection circuit
It is given to the memory 1b through the CPU 4a and the CPU 1a, and is stored in the area corresponding to each speed dial number in the speed dial memory table. In this way, when a new speed dial is newly registered, the area corresponding to the speed dial in the speed dial memory table is set with the information indicating that the incoming call is possible as the incoming call acceptance flag.

When designating whether to accept an incoming call for an identified incoming call, the user presses a predetermined setting button on the operation panel.
As a result, when there is an incoming call from the partner device registered for speed dial, the mode is switched to the incoming call permission / inhibition setting mode for setting whether to accept the incoming call (step S2). And
The destination device dial number and the incoming / outgoing designation flag registered in the speed dial memory table are read out by the CPU 1 and sent to the display control unit 4b, and the speed dial on the LCD, the registered destination device dial number and the identification incoming call mode are set. The availability of incoming calls is displayed (step S
3). The user confirms the display and accepts the incoming call,
Whether to reject or maintain the current designated state is instructed by pressing the corresponding designation button. The operation of this designation button is performed by the CPU 1 via the operation detection unit 4a.
Incorporated into a, the CPU 1a updates the incoming / outgoing designation flag based on the designation by the user (step S4). When the user presses the scroll key, the process of CPU1 is step S5.
Then, the process returns to step S3, and the registered content of the new speed dial is displayed on the LCD. When the user presses the setting end key, the operation mode becomes the identification incoming mode, the process proceeds from step S5 to step S6, and a message indicating that the setting of incoming / outgoing incoming is completed is displayed on the LCD.

When a call setup message is given from the network side to this ISDN communication terminal device, this call setup message is fetched by the CPU 1a via the communication control unit 2, and the CPU 1a makes a third call.
The routine shown in the figure is executed. First, in step S11, incoming call processing is performed, and the calling number in the call setting message is stored in the internal register of the CPU 1a. Then step S
In step 12, it is determined whether or not the identification call reception mode is currently set. If this judgment result is "NO", step
In step S13, the CPU 1 gives the communication control unit 2 an instruction for an incoming call response. As a result, an incoming response is sent back from the communication control unit 2 to the network, and a line connection is made with the partner device that is the originating side.

On the other hand, when the identification call reception mode is set, the result of the determination in step S12 is "YES" and the process proceeds to step S14. Search the dialed number of the other device. Then step
In step S15, the calling number in the call setup message is compared with the dial number searched in step S14.
Next, in step S16, it is determined whether or not both dial numbers match, and if the result of this determination is "YES", the process proceeds to step S13 to answer the incoming call. On the other hand, if the decision result in the step S16 is "NO", the process advances to a step S17 to decide whether or not all the dial numbers for which the incoming permission is set have been searched in the speed dial memory table. If this judgment result is "NO", step
Return to S14. If the judgment result is "YES", step
In step S18, an instruction to reject the incoming call is given to the communication control unit 2.
As a result, the communication control unit 2 sends a release completion message and a reason display having the contents of rejection of incoming call to the network. As a result, the line is released and the reason display is sent to the partner device.

"Effects of the Invention" As described above, according to the present invention, each of the dial number storage means for storing the dial number of the desired partner device to which the speed dial is assigned and the dial number stored in the dial number storage means. Corresponding to, the incoming call permission designating means for designating whether or not the incoming call from the partner device is permitted, and when the call setup message is given from the network, the calling number in the call setup message is the dial number storage means. In addition, since the incoming call control means for permitting the incoming call to the call setting message is provided only when the incoming call permission is specified by the incoming call permission designating means, the speed dial registration is performed in the identification incoming call mode. It is said that it is possible to allow incoming calls from only specified remote devices out of the specified remote devices, and to set flexible identification incoming calls. The effect is obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an ISDN communication terminal device according to an embodiment of the present invention, and FIGS. 2 and 3 are flowcharts showing the operation of the embodiment. 1 ... Main control unit, 1a ... CPU, 1b ... Memory, 2 ... Communication control unit, 3 ... Peripheral device control unit, 4 ... Operation control unit.

Claims (1)

[Claims] 1. A dial number storage means for storing a dial number of a desired partner device to which a speed dial is assigned, and a dial number stored in the dial number storage device, corresponding to each of the dial numbers and permitting an incoming call from the partner device. And a call setup message given from the network, the calling number in the call setup message is stored in the dial number storage means, and by the call acceptance designating means. An ISDN communication terminal device, comprising: incoming control means for permitting an incoming call to the call setup message only when an incoming call permission is specified.