JPH05130263A - Terminal equipment for isdn and operating method therefor - Google Patents

Abstract

PURPOSE:To inform of interruption of a communication line through the identification of a received signal by discriminating a received communication request with identification information and sending a communication disable when the request comes from other equipment than a terminal equipment whose communication is allowed. CONSTITUTION:A terminal equipment for ISDN is provided with a transmission control section 11 controlled by a CPU 10 and the terminal equipment is connected to an ISDN exchange network by the transmission control section 11. An operation section 13 including keys used to set and release an identified reception call and a message notice and keys or the like used to enter identification information and a message of a terminal equipment set in advance for the identified reception call and a memory 17 storing a message entered from the operation section 13 are connected to the CPU 10. When only a communication request from a specific terminal equipment is received, the identification information is stored in advance to a main memory 16 and a message representing disable reception call is sent to a communication request from the terminal equipment having identification information other than the identification information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to ISDN (Integrated Services Digital Network).
k) relates to a terminal device and its operating method.

[0002]

2. Description of the Related Art ISDN is capable of high-quality communication such as resistance to noise and crosstalk, has a strong affinity with a computer, is easy to perform communication processing, and can realize high-speed digital communication economically. Since it has the characteristics of, it can be used for communication of various data including image data as well as voice. ISDN also provides rich signals between users and the network.
Alternatively, it can be transmitted between users, and the convenience of communication can be greatly improved.

By taking advantage of the latter feature, services such as identification incoming call, incoming call transfer, and transfer during communication can be added.

[0004]

Taking the identification incoming call among the above-mentioned additional services as an example, this is set by previously setting the identification information of the terminal device of the other party who receives the communication request in the terminal device. Only the communication request of the terminal device having the identification information is accepted to enable communication, and the communication with other terminal devices is rejected. When there is a communication request from a terminal device having identification information other than the preset identification information, the communication is rejected and the communication line is disconnected immediately even once connected. In this case, the operator of the terminal device that made the communication request does not understand why the communication line was disconnected.

The present invention is an ISD in which an identification incoming call is set.
When there is a communication request from the ISDN terminal device having the identification information other than the identification information set in advance in the N terminal device, it is possible to notify the other party who has made the communication request that the communication line is disconnected by the identification incoming call. The purpose is to be able to.

[0006]

According to the present invention, in an ISDN terminal device that communicates with another terminal device through an ISDN switching network, the identification information of the terminal device of the other terminal device that permits communication is stored in advance. Storage means, receiving means for receiving a communication request given from the other terminal device through the ISDN exchange network, and communication request received by the receiving means other than the terminal device permitting communication among the other terminal devices. Determination means for determining whether or not it is from the terminal device based on the identification information stored in the storage means, and when it is determined that the communication request is from a terminal device other than the terminal device that permits communication. It is characterized in that it is provided with a sending means for sending a message indicating that communication is impossible to a terminal device that has requested communication.

According to the present invention, in an ISDN terminal device that communicates with another terminal device through an ISDN switching network, the identification information of the terminal device that permits communication among the other terminal devices and a message indicating that communication is impossible are stored in advance. By receiving a communication request given from the other terminal device through the ISDN exchange network, whether the received communication request is from a terminal device other than the terminal device permitting communication among the other terminal devices. A terminal that makes a communication request for the message stored in advance when it is determined based on the identification information stored in advance and the communication request is determined to be from a terminal device other than the terminal device that permits communication. It is characterized in that it is sent to the device.

[0008]

According to the present invention, the identification information of another terminal device which permits communication is set in advance. If there is a communication request from another terminal device having identification information other than the preset identification information among other terminal devices, the communication is rejected and the communication line once connected is disconnected. Then, the terminal device that has made the communication request is notified that the communication line is disconnected due to the incoming call.

[0009]

As described above, according to the present invention, when the communication line once connected is disconnected due to the identification incoming call, the operator requesting the communication is notified that the communication line is disconnected due to the identification incoming call. The operator who has done so can know the reason why the communication line is disconnected. Therefore, it is possible to prevent an unnecessary communication fee from being imposed by making a communication request to the same terminal device again when the call is disconnected by the identification incoming call.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an ISDN terminal device for performing identification transfer will be described below.

FIG. 1 shows an outline of the configuration of an ISDN terminal device.

The ISDN terminal device has a CPU 10, and the CPU 10 controls the overall operation of the terminal device.

The ISDN terminal device also includes a transmission control unit 11, and the transmission control unit 11 connects the terminal device to the ISDN switching network. The transmission controller 11 is controlled by the CPU 10.

The CPU 10 is further provided with a handset 12 and its interface, dial keys, keys for setting and canceling identification incoming call, incoming call transfer, and message notification.
An operating unit 13 including identification information of a terminal device preset for identification incoming and a key for inputting a message, a liquid crystal display device 14 for displaying a message input from the operating unit 13, and other information. , A program memory 15 for storing the execution program of the CPU 10, a main memory 16 for storing various data and the above various settings,
In addition, a message memory 17 for storing a message input from the operation unit 13 is connected. message·
The memory 17 can also be realized by a part of the main memory 16.

FIG. 2 shows a calling side terminal device (this is indicated by reference symbol A), a receiving side terminal device (this is indicated by reference symbol B) and I.
It shows the exchange of telegrams (communication messages) with the SDN switching network. Each of these terminal devices is shown in FIG.
It has the configuration shown in.

Further, FIG. 3 shows a processing procedure for setting an identification incoming call in the terminal device B on the incoming side.
Shows a processing procedure of the CPU 10 in the terminal device on the receiving side.

First, with reference to FIG. 3, the setting of the identification incoming call in the incoming side terminal device will be described.

In the idle state (step 30), in the case of accepting only a communication request from a specific terminal device among the other terminal devices communicating, the identification information (telephone number, name, etc.) of the terminal device accepting the communication request. Is input in advance using the operation unit 13 and stored in the main memory 16. Next, the fact that an incoming call for identification will be made is set using the operation unit 13.

When the identification incoming call is set, if there is a communication request from the terminal device having the identification information other than the pre-registered identification information, the communication line is once connected but immediately disconnected. .. In this case, the calling terminal device does not understand why the communication line is disconnected. Therefore, the terminal device of this embodiment can send a message indicating that the telephone line has been disconnected due to the incoming call to the calling terminal device. When this message is sent when there is a communication request from a terminal device that has identification information other than the previously registered identification information (YE in step 32)
S), and a message is input using the operation unit 13 (YES in step 33). An example of the message is shown in Figures 5A and 5B. When a message is input using the operation unit 13, it is registered and stored in the message memory 17 (step 34). As a result, the message notification mode is set, and a message indicating that the call cannot be received is transmitted in response to a communication request from the terminal device having identification information other than the identification information registered in advance.

The overall operation and processing of the incoming call processing will be described with reference to FIGS.

The incoming terminal device B is waiting for an incoming call (step 40). A call setting request addressed to the called terminal device B is sent from the calling terminal device A to the ISDN switching network, and a call setting request is sent from the ISDN switching network to the receiving terminal device B. At the same time as the call setting request, the identification information of the calling terminal device A is also transmitted.

When the terminal device B on the receiving side accepts the call setting request (YES in step 41), a message indicating that the call setting is accepted is sent from the ISDN switching network to the terminal device A on the calling side. When the terminal device B on the receiving side accepts the call setting request (YES in step 41), it is determined whether or not the identification incoming call is set (step 42).

When the identification incoming call is set (step 42)
YES), it is determined whether or not the identification information of the calling terminal device A transmitted together with the call setting request message is registered in the main memory 16 in advance (step
43). The identification information of the calling terminal device A is stored in the main memory 16
If it is not stored in advance in the terminal device A, it is determined that the terminal device A is a terminal device which is not permitted to receive the call (N in step 43).
O).

Further, it is judged whether or not it is set to notify the calling side terminal device A that the communication line is disconnected due to the incoming call non-permission (step 44). If notification of incoming call disallowed message is set (YE
S), the incoming call disapproval message is registered in the user / user information in the primitive and sent out to notify the calling terminal device A (step 46). As a result, the incoming call disapproval message as shown in FIGS. 5 (A) and 5 (B) is displayed on the display device 14 of the calling side terminal device A, and the operator of the calling side terminal device A identifies the incoming call. Recognizes that the incoming call is not permitted.

After that, a message requesting disconnection is sent from the terminal device B on the receiving side to the ISDN switching network, and this message is given to the terminal device A on the calling side from the ISDN switching network.
As a result, the communication line is disconnected and the calling terminal device A to I
A release request message is sent to the SDN switching network. Further, a message indicating that the communication line has been disconnected is displayed on the respective display devices 14 of the calling side terminal device A and the receiving side terminal device B (step 47).

If the identification information of the calling terminal device A matches the identification information previously stored in the main memory 16 (YES in step 43), it is determined whether the call forwarding is set in the receiving terminal device B. To be judged.

Here, the call transfer process will be described.

The terminal device A sends a call to the terminal device B to the ISDN switching network, and in response to this, the switching network gives the terminal device B a call from the terminal device A. When the call transfer is set to the terminal device B, the terminal device B does not respond to this call and the terminal device C, which is the transfer destination, to the switching network.
Specify to request call transfer. Since the switching network sends a call to the terminal device C in response to this incoming call transfer request, if the terminal device C responds to this, communication (calling) is possible between the terminal devices A and C. This is the call transfer process.

When the call forwarding is set to the called terminal device B (YES in step 48), the call forwarding process described above is performed, and the call from the terminal device A is forwarded to another terminal device C (for example). Step 49). If the call forwarding is not set in the called terminal device B (NO in step 48), the terminal device A and the terminal device B respond to the call setting request from the terminal device A.
A communication line is connected to and communication is performed (step 50).

[Brief description of drawings]

FIG. 1 shows an electrical configuration of an ISDN terminal device.

FIG. 2 shows an exchange of communication messages between a calling side terminal device and a called side terminal device.

FIG. 3 shows a setting processing procedure for identifying an incoming call.

FIG. 4 shows a processing procedure of a terminal device on the receiving side.

5A and 5B show an example of a message transmitted to a calling side terminal device when a communication line is disconnected due to an identification incoming call.

[Explanation of symbols]

 10 CPU 11 Transmission controller 16 Main memory 17 Message memory

Claims (2)

[Claims] 1. An ISDN terminal device that communicates with another terminal device through an ISDN exchange network, wherein a storage unit that stores in advance identification information of a terminal device that permits communication among the other terminal devices, the other terminal device. Receiving means for receiving a communication request given through the ISDN exchange network from the terminal, and whether the communication request received by the receiving means is from a terminal device other than the terminal device permitting communication among the other terminal devices. Judgment means for judging based on the identification information stored in the storage means, and a communication request for a message indicating that communication is impossible when the communication request is judged to be from a terminal device other than the terminal device which permits communication. A terminal device for ISDN, which is provided with a sending means for sending to the terminal device. 2. An ISDN terminal device that communicates with another terminal device through an ISDN switching network, wherein identification information of a terminal device that permits communication among the other terminal devices and a message indicating that communication is impossible are stored in advance. By receiving a communication request given from the other terminal device through the ISDN exchange network, it is possible to determine whether the received communication request is from a terminal device other than the terminal device permitting communication among the other terminal devices. When the communication request is determined based on the identification information stored in advance, and the communication request is determined to be from a terminal device other than the terminal device that permits communication, How to operate the ISDN terminal device.