JPH06244943A - Private branch exchange - Google Patents

Abstract

PURPOSE:To selectively reject the arrival of an incoming call of only a caller whose call is desired to be rejected. CONSTITUTION:A storage section 5 is provided, which stores a caller being an object of incoming call reject as to plural extension telephone sets 2. Incoming call rejection to a caller is registered in the storage section 5 by a key operation in said called extension telephone set 2 by the arrival of an incoming call by a registration means 41 of a central processing unit 4. When a call comes from the same caller, a discrimination means 42 references the storage section 5 as to the called extension telephone set 2 to discriminate the rejection of the incoming call.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a private branch exchange having a call rejection service function.

[0002]

2. Description of the Related Art Conventionally, in a private branch exchange, when a multifunction telephone is connected to the main body of the exchange and the call rejection is set on the telephone side, a busy tone is output in response to an incoming call from the caller and the incoming call is accepted. Some have a call rejection service function that rejects calls.
As a general rule, those having such a call rejection service function are configured to reject the call regardless of the calling party when the call rejection is set.

However, this is often inconvenient in operation, and, for example, when it is desired to reject only an incoming call from a specific partner,
I had to reject all incoming calls, and sometimes miss important calls.

[0004]

Thus, in the conventional private branch exchange having the call rejection service function, once the call rejection is set, all the calls are received regardless of the caller unless the setting is canceled. Since it refuses, there is a problem that it may not be possible to answer an important incoming call.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a private branch exchange having a call rejection service function capable of selectively rejecting callers who want to reject calls. To do.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a storage means for storing a caller who is an object of call rejection or call acceptance for each extension telephone, and a call rejection for the callee by an operation on the callee when receiving a call. Alternatively, it is constituted by means for registering the incoming call permission in the storage means, and means for deciding the incoming call rejection or the incoming call permission with respect to the incoming call from the calling party by referring to the storage means for the destination telephone.

[0007]

As a result, according to the present invention, for example, in the case of the caller who wants to reject or allow the call after the second time, by registering the call reject or the call permit to the caller by operating the key of the called telephone, It is possible to reject or allow incoming calls only for a specific calling party, which avoids unnecessary calls and can reliably answer other incoming calls that have significant meaning.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes an exchange main body, and the exchange main body 1
Has an exchange circuit 11 and connects a plurality of extension circuits 12 _{1 to} 12 _n to the exchange circuit 11 and a plurality of outside line circuits 13 _{1 to} 13 _n .

The extension circuits 12 _{1 to} 12 _n are connected to multifunction telephones 2 ₁ to 2 _n , respectively, and the outside line circuit 1 is connected.
Subscriber lines 3 _{1 to} 3 _n are connected to 3 _{1 to} 13 _n .
Further, the central processing unit 4 is connected to the exchange circuit 11, and the storage unit 5 and the maintenance terminal 6 are connected to the central processing unit 4.

FIG. 2 shows a schematic configuration of the extension telephones 2 ₁ to 2 _n having multiple functions. In this case, 21 is the extension telephone main body, and the telephone main body 21 is provided with a handset 23 via a hook mechanism 22. The surface of the telephone body 21 has a dial mechanism 24 having “0 to 9”, “*”, and “#”, a liquid crystal display unit 25, and various service keys 26. In this case, these service keys 26 include an extension DN key 261 and a specific terminal-designated incoming call rejection function key (hereinafter abbreviated as DDS key) 262.

Here, when the DDS key 262 is pressed when the liquid crystal display unit 25 finds that the incoming call is from the other party, the incoming call from the same party is rejected thereafter. In addition, if you press it when you know that it is an incoming call from the other party you want to reject while in a call, if you press the following call from the same party,
By rejecting the call and operating it twice in succession, the registration of the call rejection can be cleared.

The central processing unit 4 controls each section. Here, the DDS key 26 in the extension telephone 2 of the destination is designated.
The registration means 41 for registering the rejection of the incoming call to the calling party by the operation of 2 in the storage section 5, and the judging means 42 for determining the rejection of the incoming call from the calling party by referring to the storage section 5 for the extension telephone 2 of the called party. have. FIG. 3 shows a schematic configuration of the storage unit 5.

The storage unit 5 has a header table 51, a pointer table 52, and an incoming call rejection telephone number registration table 53. The incoming call rejection telephone number is registered in the incoming call rejection telephone number registration table 53 and the incoming call rejection telephone number is registered. Number registration table 5
The header table 51 and the pointer table 5 have a chain structure capable of responding to dynamic data fluctuation in
It is composed of two.

Here, the header table 51 is for each extension 1
The pointer table 52 stores pointers a and b to the head and tail of the chain for
For n, a pointer c to the next chain and a pointer d to the incoming call rejection telephone number registration table 53 are stored. Then, in the incoming call rejection telephone number registration table 53, each extension 1 to n
The flag indicating whether the registered incoming call rejection is being registered (0: no incoming call rejection registered, 1: incoming call rejection registered) is stored.

Thus, as an example, when the extension numbers A, 2, 5 from extension A are to be rejected as shown in FIG.
Pointers a and b to the head and tail of the chain are designated, and the pointer table 52 is designated by these pointers a and b.
In, a chain structure is formed by pointers c, c ′, c ″ to the next chain, and pointers d, d ′, d ″ to the incoming call rejection telephone number registration table 53 are instructed to Telephone numbers 1, 2, 5 of registration table 53
Will be set as a call rejection target. Next, the operation of the embodiment configured as described above will be described with reference to the flowchart of FIG. When the caller dials the telephone number (step 401), the caller gives a call setting request to the called party (step 402).

Here, it is confirmed whether or not the caller's number is obtained from the information of the call setup limit of the call setup request (step 403). Then, when the caller number is obtained, this caller number is displayed on the liquid crystal display unit 25 of the called telephone (step 404).

In this state, it is checked whether the caller's telephone number is registered in the incoming call rejection telephone number registration table 53 (step 4).
05). In this case, for the destination extension, the pointer table 5 formed by the instruction of the pointer to the chain head and tail of the header table 51 as described in FIG.
Call rejection number registration table 5 according to the chain structure of 2
The target of the incoming call rejection registered in 3 is checked.

Here, if the incoming call rejection telephone number registration table 53 includes the telephone number of the caller, the call setting is rejected (step 406), a busy tone is sent to the caller, and the process is terminated (step 406). Step 407). On the other hand, when the caller's telephone number is not included in the call rejection telephone number registration table 53, it is checked whether or not there is a call rejection telephone number registration request for the caller number displayed on the liquid crystal display unit 25 at the destination. (Step 408).

Here, if there is no request for the incoming call rejection telephone number registration, the call setting is accepted (step 409), a call is made with the called party (step 410), and the processing is ended by the end of the call thereafter (step 410). Step 411). On the other hand, if the caller ID displayed on the liquid crystal display unit 25 is requested to register the incoming call rejection telephone number, when the DDS key 262 is pressed on the called telephone (step 412), the caller at this time is called. The telephone number is registered in the incoming call rejection telephone number registration table 53 (step 413). In this case, for the destination extension,
According to the chain structure as shown in FIG. 4, the incoming call refusal target is registered in the incoming call rejection telephone number registration table 53. In this case, the ringing tone is continuously output to the caller (step 414), and the process is terminated after waiting for the caller to hook on (step 415).

On the other hand, if the caller number cannot be obtained from the call setting primitive information of the call setting request given to the called party by the calling party (step 403), the calling party number is the liquid crystal of the called telephone. It is not displayed on the display unit 25.

In this state, it is checked whether the caller telephone number is registered in the incoming call rejection telephone number registration table 53 (step 416). Also in this case, the pointer table 5 formed by the chain head of the header table 51 and the pointers to the tails as described with reference to FIG.
Call rejection number registration table 5 according to the chain structure of 2
The target of the incoming call rejection registered in 3 is checked.

If the incoming call rejection telephone number registration table 53 contains the caller's telephone number, the call setting is rejected (step 406), the busy tone is sent to the caller, and the process ends (step 406). 407). On the other hand, if the call rejection telephone number registration table 53 does not include the telephone number of the caller, the call setting is accepted (step 417) and the call with the called party becomes possible (step 418).

It is checked whether or not there is a call rejection call number registration request to the caller during the call (step 419). Here, if there is no request for the incoming call rejection telephone number registration, the call is continued, and the process ends when the call ends (step 41).
1).

On the other hand, when the caller in the call is requested to register the incoming call rejection telephone number, the DDS key 262 of the destination telephone is pressed (step 420). Is registered in the incoming call rejection telephone number registration table 53 (step 421). In this case, for the extension of the call destination, the call rejection object is registered in the call rejection telephone number registration table 53 according to the chain structure as shown in FIG. In this case, the call is continued, and the process ends when the call ends (step 411). Next, the above operation will be described more specifically.

First, the operation of rejecting the designated terminal incoming call is as shown in FIG. In this case, when a call setup request is given from extension A to extension B,
Along with the calling operation, the caller number from extension A is displayed on the liquid crystal display 25. In this case, the extension B sends a call notification to the extension A to notify that the call is in progress.

In this state, when the caller number of the extension A displayed on the liquid crystal display unit 25 is rejected, if the DDS key 262 is pressed with the extension B, the caller's telephone number at this time is rejected. Extension B is registered in the telephone number registration table 53.
The calling operation at is stopped. In this case, the extension A is continuously notified that the call is being made, and the process is terminated after waiting for recovery.

Next, the operation for registering the incoming call rejection terminal telephone number during a call is as shown in FIG. In this case, when a call setup request is given from the extension A to the extension B, a call notification is sent from the extension B to the extension A to notify that the call is being made. Then, when the extension B responds to the call setup request from the extension A, a response notice is sent to the extension A, and the extensions A and B enter into the call state. In this state, when the incoming call is rejected to the extension A during a call, if the DDS key 262 is pressed on the extension B, the caller's telephone number at this time is registered in the incoming call rejection telephone number registration table 53, and thereafter. Incoming calls to extension A will be rejected.

The signal sequence when the incoming call is rejected is as shown in FIG. In this case, when a call setup request is given from extension A to extension B, it is checked whether the caller's telephone number at this time is registered in the incoming call rejection telephone number registration table 53, and if it corresponds to the incoming call rejection designated terminal. For example, a release completion notification indicating the call rejection is sent to the extension A, and the busy tone is output as the connection restriction sound.

Therefore, in this way, when it is desired to reject the incoming call from the caller at the callee, by pressing the DDS key 262 on the callee's telephone, the caller's call at that time is called. No. is incoming call rejection telephone number registration table 5
If the same caller receives an incoming call again after being registered in No. 3, by referring to the incoming call rejection telephone number registration table 53 for the destination telephone, it is possible to reject the incoming call for that caller. become. As a result, it is possible to reject the second and subsequent incoming calls for a particular calling party, so that it is possible to avoid useless calls and reliably respond to other important incoming calls.

The present invention is not limited to the above-mentioned embodiments, but can be carried out by appropriately modifying it without departing from the scope of the invention.
For example, in the above-described embodiment, the case of rejecting the incoming call is described, but conversely, the case of permitting the incoming call can be applied. Also,
In the above, the case where the caller is an extension has been described.
The same can be applied to an incoming call from a switching network such as a DN network in the same manner as described above by registering a source number to be rejected.

[0031]

According to the present invention, for example, in the case of the caller who wants to reject or allow the call after the second time, the call rejection or the call permission for the caller can be specified by operating the key of the called telephone. Since it is possible to reject or permit the incoming call only for the other party, it is possible to avoid useless calls and surely respond to incoming calls having important meaning. Also, the user
While performing the work, the work can be continued without being disturbed by the response to the useless incoming call, which is also effective in improving the work efficiency.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing a schematic configuration of an extension telephone used in one embodiment.

FIG. 3 is a diagram illustrating a schematic configuration of a storage unit according to an embodiment.

FIG. 4 is a diagram for explaining registration of an incoming call rejection telephone number in the storage unit of FIG.

FIG. 5 is a flowchart for explaining the operation of the embodiment.

FIG. 6 is a diagram for explaining a specific operation of the embodiment.

FIG. 7 is a diagram for explaining a specific operation of one embodiment.

FIG. 8 is a diagram for explaining a specific operation of the embodiment.

[Explanation of symbols]

1 ... exchange body 11 ... exchange circuit, 12 ₁ to 12 _n ... extension circuit, 131 -13N ... external circuit, 2 ₁ to 2 _n ... extension telephone, 3 ₁ to 3 _n ... subscriber line, 4 ... central processing unit ,
41 ... Registration means, 42 ... Judgment means, 5 ... Storage section, 6 ... Maintenance terminal, 21 ... Extension telephone main body, 22 ... Hook mechanism, 23 ... Handset, 24 ... Dial mechanism, 25 ... Liquid crystal display section, 26 ... Various service keys, 261, ... Extension D
N key, 262 ... Specific terminal-specified incoming call rejection function key, 51
... header table, 52 ... pointer table, 53 ... incoming call rejection telephone number registration table.

Claims (1)

[Claims] 1. A storage unit for storing a caller who is subject to call rejection or call permission for each extension telephone, and a call rejection or call permission for the caller to the callee by an operation on the callee telephone when receiving a call. A private branch exchange comprising: a unit for registering; and a unit for deciding whether to reject or allow an incoming call by referring to the storage unit for the destination telephone with respect to an incoming call from the calling party.