JPH0279590A - Electronic exchange - Google Patents

Abstract

PURPOSE:To store a desired subscriber number to a storage means and to attain optional incoming restriction by providing a comparison means comparing at least one digit of a received subscriber number with a digit of a subscriber number stored in a storage means corresponding to the digit. CONSTITUTION:Users of terminal equipments 8, 9 input a subscriber number allowing the incoming call to tables 10, 11 in advance. When an incoming call comes to, e.g., a subscriber terminal set 8 through a network 1, a central processing unit 5 compares the received subscriber number with the subscriber number stored in the table 10 and when the coincident number is stored in the table, the incoming connection to the subscriber terminal set 8 is attained. On the other hand, if the coincident number is not stored in the table 10, the central processing unit 5 is operated as an information transmission means and the incoming restriction information representing the disabled connection is sent to the caller.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic exchange that employs a storage program method.

[Conventional technology]

Conventional electronic switching equipment that uses the storage program method has
There are devices that can restrict incoming calls to specific subscriber terminal devices and prevent connections even if there is an incoming call.

[Problem to be solved by the invention]

However, such conventional electronic exchanges can only restrict connection for all incoming calls; for example, if a call is received from a terminal device with a specific subscriber number, connection will be made, or The last number of the subscriber number, etc.
If a specific digit of the subscriber number of the calling terminal device is a specific number, it is not possible to permit incoming calls.

An object of the present invention is to eliminate such drawbacks, and to connect an incoming call from a calling terminal device if the subscriber number of the calling terminal device satisfies certain conditions, and to connect the call from the calling terminal device if the subscriber number does not meet the conditions. The object of the present invention is to provide an electronic exchange that does not make incoming connections.

[Means to solve the problem]

The present invention provides an electronic exchange that employs a storage program system, which includes a receiving means for receiving a subscriber number sent from a subscriber terminal device on a calling side, and storing a subscriber number input from a subscriber terminal device on a called side. a comparison means for comparing at least one digit of the subscriber number received by the receiving means with the number of the subscriber number corresponding to this digit and stored in the storage means; If the digits compared by the comparison means match, an incoming call control means permits the incoming call from the calling subscriber terminal device to the called terminal device, and if the digits compared by the comparing device do not match, the incoming call is The present invention is characterized by comprising information sending means for sending regulation information to the calling side terminal device.

〔Example〕

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

FIG. 1 is a block diagram showing an embodiment of an electronic exchange according to the present invention. Subscriber terminal bags W8, 9 are connected to this electronic exchange 100, and these terminals are accommodated in the time division switch mechanism 4 through subscriber circuits 6.7, respectively. The time division switch mechanism 4 is connected by a trunk circuit 2 to a network 1 capable of transmitting subscriber numbers (for example, an 15DN network), and a control circuit 3 is connected to the trunk circuit 2. A central processing unit 5 is further connected to the time division switch mechanism 4 for controlling it, and the central processing unit 5 is also connected to the control circuit 2 and to the subscriber circuit 6.7.

As shown in FIGS. 2 and 3, the central processing unit 5 is equipped with a table (storage means) 10.11 of subscriber numbers to which each subscriber terminal device 8.9 is permitted to receive calls. In the subscriber number table 10.11, the subscriber number of the calling terminal device to which the user operates each terminal device and is permitted to receive a call is manually entered in advance.

Next, the operation will be explained. The user of each terminal device 8.9 inputs in advance into table 10.11 the subscriber number for which incoming calls are permitted. In other words, the user is using the terminal device 8.9.
When the user presses the special number and enters the subscriber number for which incoming calls are permitted, the central processing unit 5 sequentially receives these through the subscriber circuit 6.7 and stores them in tables 10.11.

Thereafter, when a call is received via the network 1 to, for example, the subscriber terminal device 8, the control circuit 3 operates as a receiving means,
The calling subscriber number, for example 03-434-4215, is received together with the incoming message via the trunk circuit 2 and sent to the central processing unit 5. When the central processing unit 5 receives the subscriber number from the control circuit 3, it operates as a comparing means and compares the received subscriber number with the subscriber number stored in the table 10. Then, if a matching number is stored in the table, the central processing unit 5 (
In the example shown in FIG. 2, it operates as an incoming call control means (in which matching numbers are stored), and controls the time division switch mechanism 4 to connect incoming calls to the subscriber terminal device 8.

On the other hand, when a matching number is not stored in the table 10, the central processing unit 5 operates as an information sending means,
Sends incoming call restriction information to the calling party, informing that connection is not possible.

In this way, in the electronic exchange of this embodiment, when a call is received from a terminal device with a subscriber number stored in advance in the subscriber number table, the connection is made, and when a call is received from any other terminal device, the connection is made. No connection is made to

In this example, an incoming connection is made when the subscriber number of the calling terminal device matches the subscriber number stored in the table, but if part of the calling party's subscriber number is a pre-registered number. It is also possible to make incoming connections at certain times. For example, let the symbol "*" represent any number from O to 9, and from the terminal device 8 "＊＊＊＊＊＊＊＊5
'' is input and stored in the table 10, the central processing unit 5 serving as a comparison means will determine that the numbers match if the end of the calling subscriber number is ``5''. That is, when there is an incoming call from a terminal device whose subscriber number ends with "5", the central processing unit 5 performs the incoming call connection.

It is also possible to make incoming connections for all calls, in which case it is possible to decide, for example, that the symbol "#" represents all subscriber numbers, and to add "#" to the subscriber number table. ”. As a result, the central processing unit 5 serving as a comparison means determines that all caller subscriber numbers match the numbers in the subscriber number table, so the central processing unit 5 determines that all calls are connected to the incoming subscriber number table. will be carried out.

Further, in this embodiment, incoming calls from network 1 are restricted, but from the purpose of the present invention, when calling from one of subscriber terminal devices 8 and 9, which are extension terminal devices, to the other, Similarly, it is possible to restrict incoming calls.

〔Effect of the invention〕

As explained above, the present invention provides an electronic exchange that employs a storage program system, which includes a receiving means for receiving a subscriber number sent from a subscriber terminal device on the calling side, and a receiving means for receiving a subscriber number sent from a subscriber terminal device on the called side. storage means for storing a subscriber number stored in the storage means; and comparison means for comparing at least one digit of the subscriber number received by the reception means with a digit of the subscriber number corresponding to this digit and stored by the storage means. If the digits compared by this comparison means match, the incoming call control means allows the incoming call from the calling subscriber terminal device to the called terminal device, and if the digits compared by the comparing means do not match, the incoming call is and information sending means for sending the regulatory information to the sending terminal.

Therefore, according to the present invention, if at least one digit of the subscriber number of the originating terminal device matches a pre-stored number, an incoming connection is made for the call from that terminal device; can realize an electronic exchange that does not make incoming connections.

By using this electronic exchange, it becomes possible to store a desired subscriber number in the storage means and arbitrarily restrict incoming calls.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an electronic exchange according to the present invention, and FIGS. 2 and 3 are explanatory diagrams showing a subscriber number table used in the embodiment of FIG. 2...Trunk circuit 3...Control circuit 4...Time division switch mechanism 5...Central processing unit 6.7...Subscriber circuit 8.9...Subscriber terminal equipment 10, 11. ...Subscriber number table 100... Yoshiyuki Iwasa, patent attorney representing electronic exchanges Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] (1) In an electronic exchange that adopts the storage program method, there is a receiving means for receiving the subscriber number sent from the subscriber terminal device on the calling side, and a means for storing the subscriber number input from the subscriber terminal device on the called side. storage means; comparison means for comparing at least one digit of the subscriber number received by the receiving means with a digit of the subscriber number corresponding to this digit and stored in the storage means; If the digits compared by the comparison means match, incoming call control means permits incoming calls from the calling subscriber terminal device to the called terminal device, and if the digits compared by the comparison means do not match, incoming call control information. and information sending means for sending the information to the originating terminal device.