JPS6367953A - Incoming call rejecting system - Google Patents

Abstract

PURPOSE:To receive an urgent incoming call from a specific subscriber without being disturbed by another termination by providing the titled system with a 1st storing area for storing the incoming call rejecting sings corresponding to plural telephone sets and a 2nd storing area for storing the telephone number of an originating telephone set by which the incoming call rejection is to be released. CONSTITUTION:An incoming call rejection discriminating memory area 7 consists of a discrimination area 7a and a storage area 7b, an incoming call rejection service executing sign D is written in the LSB or MSB of the area 7a and the telephone number of an originating side terminal by which the incoming call rejection is to be released is written in the area 7b. When a terminal 4 is originated from a terminal 6, a CPU reads out the memory area 7 in a memory device 3 corresponding to the terminal 4, reads out subscriber's telephone numbers N3-N0 from the area 7b and compares the subscriber's telephone number of the terminal 6 with these numbers N3-N0. When the subscriber's number coincides with any one of the read numbers N3-N0, normal calling processing is executed and call can be available between the terminals 6 and 4.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a call rejection method for an electronic exchange that accommodates a plurality of telephones, and particularly relates to a call rejection method that accepts only incoming calls from arbitrary subscribers. .

[Prior Art] Traditionally, electronic exchanges generally provide subscribers with a call rejection service that prevents all incoming calls from being accepted, in case the subscriber is too busy to answer the phone. Ta.

[Problems to be solved] In the conventional telephone exchanges mentioned above, each subscriber can receive calls from all unspecified subscribers through the switching function, or all calls can be rejected by the call rejection service provided by the electronic exchange. There were only two possible situations: either they would not accept calls from unspecified subscribers, or they would not accept calls. Therefore, if a subscriber expects to receive a call from another specific subscriber, the problem is that receiving a call from someone other than that specific subscriber prevents the subscriber from receiving a call from the specific subscriber that the subscriber is expecting. was occurring. Furthermore, when a subscriber sets a setting to reject incoming calls, there is a restriction in use that it is not possible to receive all incoming calls, including those from specific subscribers who are expecting to receive calls.

For example, this applies when a subscriber applies for an international call, etc. to a relay console and is waiting for a call back from the relay console, or when the subscriber is waiting for a response to an urgent request to another subscriber. There has been an inconvenience in that the subscriber, who is expecting a call from a third party, cannot receive a call back from the relay stand or a response from another subscriber.

[Means for solving the problem] This invention was made in view of the above circumstances, and provides a method for rejecting calls in an electronic exchange that accommodates a plurality of telephones.
A plurality of first storage areas are provided corresponding to each of the plurality of telephones and store an incoming call rejection sign instructing execution of the incoming call rejection service; a storage means having a plurality of second storage areas in which telephone numbers of caller telephones whose rejection is to be canceled are stored, and a call rejection sign is placed in the first storage area corresponding to the telephone according to an instruction from the telephone; a first writing means for writing, a second writing means for writing the telephone number of the calling telephone to cancel the incoming call rejection in the second storage area corresponding to the telephone according to an instruction from the telephone; A first judgment m1 means reads the first storage area corresponding to the incoming telephone and determines whether or not the incoming call rejecting sign is present, and the incoming call rejecting sign is written based on the determination result of the first determining means. a second determining means for reading the second storage area corresponding to the receiving telephone and determining whether or not the same telephone number as the telephone number of the calling telephone is written therein; Based on the judgment result of the judgment means, if the same phone number as the calling phone is written, a busy tone will be returned to the calling phone, but if the same phone number is written, the call will be answered. The present invention is characterized by comprising a processing means for making a call to the telephone.

[Example 1] An example of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an electronic exchange to which an embodiment of the present invention is applied. In this figure, 1 is a switch circuit network that connects three subscriber terminals A, B, and C (hereinafter referred to as terminal 4).
, 5.6). Here, this terminal 4
, 5.6 each have a telephone number.

2 is a CPU (central processing unit), which controls the electronic exchange.

Further, 3 is a storage device, and this storage device 3 includes:
Call rejection identification memory area 7.7. corresponding to each of the terminals 4, 5.6. ,, are provided. This incoming call rejection identification memory area 7 is an identification area 7 as shown in the first part.
a and a storage area 7b, and the identification area 7a has a storage area 7b.

An incoming call rejection service execution sign D is written in S, B or M, S, and H, and the telephone number of the calling terminal whose incoming call rejection is to be canceled is written in the storage area 7b.

In the above configuration, when an incoming call rejection is input manually from the terminal 4 by dial operation, the CPU 2 sets an incoming call rejection service execution sign D in the identification area 7a of the incoming call rejection identification memory area 7 corresponding to the terminal 4 in the storage device 3. .

Next, when an arbitrary subscriber's telephone number is entered manually from the terminal 4 following the input of the call rejection, the CPU 2 sets the subscriber's telephone number in the storage area of the incoming call rejection identification memory area 7 corresponding to the terminal 4. In this case, when a predetermined special number is dialed, the call rejection service is performed without inputting the subscriber's telephone number. If a special number is dialed without entering the subscriber's telephone number manually, the conventional call rejection service will be provided.

Now, the subscriber phone number "N3" from terminal 4 to terminal 5,
When "N2, Nr, No" is input, the CPU 2 stores the subscriber telephone numbers N3.N2.Nl, N in the storage area 7b of the incoming call rejection identification memory area 7 corresponding to the terminal 4.
Write 3. The call rejection service execution sign D and subscriber number N3 set above. N2, Nl, and No are held until the registration of the call rejection service is canceled by dialing. In this state, from 6 to terminal 4
When a call is made to the terminal, the CPU 2 reads the call rejection identification memory area 7 corresponding to the terminal 4 in the storage device 3,
First, it is determined whether or not the incoming call rejection service execution sign D is set. If not set, normal call processing is followed. On the other hand, when the incoming call rejection service execution sign D is set, the subscriber telephone number N3°N2. N, , No are read out and compared with the subscriber telephone number of the terminal 6 which is the calling party.

In this case, the set subscriber telephone number N3. N2
, Ns, and No belong to terminal 5, so they do not match the subscriber telephone number of terminal 6, which is the calling party, and therefore C
PU2 returns a busy tone in response to a call from terminal 6.

On the other hand, when the terminal 5 makes a call to the terminal 4, the subscriber telephone number N3. set in the storage area 7b is called. N
2, Nl, No and the subscriber number of terminal 5, which is the caller, match, so normal call processing is performed and terminal 5 and terminal 4
It is now possible to make calls between.

Although relay stations are distinguished from general subscribers, by assigning an individual number to each relay stand, they are also regarded as one subscriber and can be used as a reference for this call rejection service.

[Effects of the Invention] As explained above, according to the present invention, in a call rejection system of an electronic exchange accommodating a plurality of telephones, a call rejection service is provided corresponding to each of the plurality of telephones, and is configured to execute a call rejection service. a plurality of first storage areas in which incoming call rejection signs to instruct are stored; and a plurality of second memories provided corresponding to each of the plurality of telephones, and in which the telephone number of the calling telephone whose incoming rejection is to be canceled is stored; storage means having a storage area; a first writing means for writing the incoming call rejection sign in the first storage area corresponding to the telephone according to an instruction from the telephone;
a second writing means for writing the telephone number of the calling telephone to cancel the incoming call rejection in the second storage area corresponding to the same telephone; a first determining means for determining the presence or absence of an incoming call rejection sign; and a second storage area corresponding to the incoming telephone when the incoming call rejecting sign is written based on the determination result of the first determining means; a second determination means for reading out and determining whether or not the same telephone number as the telephone number of the calling telephone is written;
Based on the judgment result of the second judgment means, if the same telephone number as the calling telephone number is written,
Since the subscriber is equipped with a processing means that returns a busy tone to the same calling telephone and calls the receiving telephone if the same telephone number is written, the subscriber can receive an emergency call from a specific other subscriber. When the user expects to receive a call, he or she can receive the expected call without being hindered by other calls. Furthermore, it is possible to provide a call rejection service that secures incoming calls for emergency calls and rejects incoming calls from an unspecified number of other subscribers.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an electronic exchange to which an embodiment of the present invention is applied. 1: Switch network 2: CPU (central control unit) 3: Storage device 4: Subscriber (terminal) A 5: Subscriber (terminal) B 6: Subscriber (terminal) C 7: Call rejection identification memory area

Claims (1)

[Claims] In a call rejection system for an electronic exchange accommodating a plurality of telephones, a plurality of first storage areas are provided corresponding to each of the plurality of telephones and store a call rejection sign instructing execution of a call rejection service; a storage means that is provided corresponding to each of the plurality of telephones and has a plurality of second storage areas in which the telephone number of the calling telephone whose incoming call rejection is to be canceled is stored; a first writing means for writing the call rejection sign in the corresponding first storage area; and a calling telephone for canceling the call rejection in the second storage area corresponding to the telephone according to an instruction from the telephone. a second writing means for writing a telephone number; a first determining means for reading the first storage area corresponding to the receiving telephone when a call is received; and determining whether the incoming call rejection sign is present; and the first determining means. Based on the judgment result, if the incoming call rejection sign is written, the second
a second determining means for reading the storage area of and determining whether or not the same telephone number as the telephone number of the calling telephone is written; and based on the determination result of the second determining means,
If the same phone number as the calling phone is written, a busy tone is returned to the calling phone; if the same phone number is written, the processing means calls the receiving phone. An incoming call rejection method characterized by comprising: