JPH02143661A - Automatic private branch exchange with extension incoming call rejection function - Google Patents

Abstract

PURPOSE:To reject only an incoming call from a designated extension telephone set by storing extension incoming call rejection information rejecting only an incoming call from a specific extension telephone set and rejecting the incoming call with the extension incoming call rejection information. CONSTITUTION:A subscriber dials a telephone number of a telephone set 2 used by a subscriber B and a special number requesting an incoming call rejection setting rejecting an incoming call from all extension telephone sets 3,4 other than the telephone set 2 by using its own telephone set. The extension incoming call rejection information requested by the special number is written in an extension incoming call rejection information storage area 11 corresponding to the telephone set 1. When telephone set 2,3 or 4 dial to the telephone set 1, a central controller 5 retrieves the area 11 to connect the line to the telephone set 2 and the line is connected to the telephone set 2 or a signal tone representing the incoming call rejection is informed to the telephone sets 3,4 through an signal tone trunk 8.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic private branch exchange, and particularly to a call rejection system.

[Conventional technology]

With the conventional extension call rejection method in automatic private branch exchanges,
By dialing a specific predetermined number from a certain telephone or by pressing a call rejection button provided on the specific telephone, all incoming calls to that telephone are rejected.

[The evil that the invention attempts to solve]

The conventional extension call rejection method described above has the disadvantage that all incoming calls are rejected or restricted from being connected to the extension subscriber's phone that has rejected the call. The disadvantage is that it is not possible to reject all incoming calls or to reject only certain incoming calls and connect all other incoming calls.

[Means to solve the problem]

The automatic private branch exchange with an extension call rejection function of the present invention has an extension call rejection information storage area, and a subscriber of an extension telephone receives calls from all extension telephones other than this extension telephone along with the telephone number of another specific extension telephone. A first special number that requests a call rejection setting to reject calls or a second special number that requests a call rejection setting to reject calls only from the other specific extension telephone. When dialing , extension call rejection information, which is information requested by the first or second special number, is stored in the extension call rejection information storage area, and if there is an incoming call from the other specific extension telephone, When the extension call rejection information is received, the control means reads the extension call rejection information and rejects the call based on the extension call rejection information.

[Effect]

Corresponding to an extension phone, display extension call rejection information that rejects calls from all extensions other than other specific extensions, or extension call rejection information that rejects calls only from other specific extensions. Incoming call rejection information - Enter this information in the m area and use this extension call rejection information to reject calls, so instead of rejecting calls from all extensions, only calls from the specified extension will be rejected. be able to.

C Embodiment J Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of an automatic private branch exchange with an extension call rejection function according to the present invention.

This embodiment has a main storage device 6 with an extension call rejection information/l area 11, a central control device 5, an exchange switch 7, a signal tone trunk 8, and a trunk details 9.
It accommodates ~4.

In the extension call rejection information storage area 11, the subscriber of extension telephone 1 can reject incoming calls from all extension telephones 3.4 other than extension telephone 2, along with the telephone number of other specific extension telephone 2. When dialing a first special number that requests an incoming call rejection setting that performs the above or a second special number that requests an incoming call rejection setting that performs an incoming call rejection only for incoming calls from the other specific extension telephone 2, Extension call rejection information, which is information requested by the first or second special number, is stored. Each subscriber of extension telephones 2 to 4 may reject incoming calls from all extension telephones other than the other specific extension telephones, or may reject only incoming calls from said other specific extension telephones. Regarding the extension call rejection information when rejecting a call, as in the case of extension telephone 1 described above, each extension telephone PA2 to PA4 is used.
An extension call rejection information storage area (not shown) corresponding to the extension call reception rejection information is provided in the main storage device 6, and this extension call reception rejection information is stored. Furthermore, since this embodiment accommodates four extension telephones, four extension call rejection information storage areas are provided corresponding to each extension telephone.However, when accommodating n extension telephones, , n extension call rejection information storage areas may be provided.

Next, the operation of this embodiment will be explained.

Now, an incoming call to an extension subscriber (hereinafter referred to as subscription fsA) from all extension subscribers (subscribers C and D) other than another specific extension subscriber (hereinafter referred to as subscription iB) It is assumed that incoming calls from subscriber B are rejected and connection to subscriber A is established only in response to incoming calls from subscriber B. In this case, first,
The subscription IA is from telephone 1 to telephone 2 used by subscriber B.
If you dial a special number that requests a call rejection setting that will reject incoming calls from all extensions 3 and 4 other than telephone 2, the information requested by this special number will be displayed. Someday! 5i1 call rejection information corresponds to telephone l! ! Incoming call rejection information storage area t
i (hereinafter referred to as "storage area Ill").Next, when subscriber WB dials the number of telephone 1 used by subscriber A from telephone 2, central control unit 5 indicates that subscriber gB 6 storage area 11 to search whether or not subscriber A has previously stored extension call rejection information in any of the register/m areas in the main storage device 6 using the number of telephone 1 dialed from 2; After searching for what has been written/hidden, the central side (II device 5 is
After comparing the extension call rejection information recorded/displayed in the call area 11 with the number of the telephone 2 used by the subscriber gB and confirming that connection is possible, the telephone 2
and the telephone 1 are connected to the line by controlling the exchange switch 7.

On the other hand, when subscriber C dials the number of telephone 1 used by subscriber A from telephone 3, central control unit 5 searches storage area 11 corresponding to telephone 1 in the same way as described above.
After comparing the extension call rejection information stored in the storage area 11 with the number of the telephone 3 used by subscriber C and confirming that the connection is impossible, that is, the call is rejected, a signal tone is emitted by known means. Exchange switch 7 for trunk 8 and telephone 3
The subscriber C is connected via the signal tone trunk 8 and notified to the subscriber C by a signal tone or a pre-installed voice signal indicating that the connection is not possible, that is, the incoming call is rejected.

When the subscriber gD dials the number of the telephone l used by the subscriber gA from the telephone 4, the same system as the above-mentioned subscription δC is carried out.

In addition, extension call rejection information is provided that indicates that calls will be rejected only from subscriber IBs, and calls from all other extension subscribers (subscribers ffc and D) will be connected to the subscriber. When used, contrary to the above, the signal tone trunk 8 is sent to the telephone 2 used by subscriber B.
A signal tone or a pre-installed audio signal indicating that the connection is rejected is sent out from the exchange switch 7. For subscriber C, telephone 3 used by subscriber C and telephone 1 used by subscriber IA are connected via exchange switch 7.

Subscriber A cancels the setting of the extension call rejection information stored in the storage area 11 corresponding to the telephone 1 provided in the filling device 6 via the central control device 5, and cancels the setting of the extension call rejection information from which subscriber. If it is possible to do so, by transmitting an extension call rejection release number, which is a special number that requests cancellation of the extension call rejection information setting, from the telephone 1 used by the subscribed flA, by known means, The extension call rejection information stored in the storage area 11 is deleted.

Regarding the incoming call rejection control for incoming calls from the trunk group 9, if the originating number etc. of the incoming call from the trunk P19 can be identified by the central control ear device 5, the incoming call from the above-mentioned extension subscriber can be rejected. Similar control becomes possible.

[Effects of the Invention 1 As explained above, the present invention has the following advantages for extension telephones:
By rejecting only incoming calls from all extension telephones other than other specific extension telephones or from other specific extension telephones, there is an effect that incoming calls that can be rejected are not incoming calls from all extension telephones.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an automatic private branch exchange with an extension call rejection function according to the present invention. 1 to 4...-telephone, 5... central control unit,
6... Main storage device, 7... Exchange switch,
8...Signal trunk, 9...-Trunk group, 1
1... Extension call rejection information storage area.

Claims (1)

[Scope of Claims] 1. In an automatic private branch exchange, an extension call rejection information storage area, where a subscriber of an extension telephone receives calls from all extension telephones other than the particular extension telephone along with the telephone number of another specific extension telephone. A first special number that requests a call rejection setting to reject calls or a second special number that requests a call rejection setting to reject calls only from the other specific extension telephone. When dialing , extension call rejection information, which is information requested by the first or second special number, is stored in the extension call rejection information storage area, and if there is an incoming call from the other specific extension telephone, An automatic private branch exchange with an extension call rejection function, characterized in that the automatic private branch exchange has a control means for reading the extension call rejection information and rejecting the call based on the extension call rejection information.