JPH0326148A - System for reporting situation of person to be called - Google Patents

Abstract

PURPOSE:To decides the fact that an extension subscriber to be a person to be called does not use a telephone set to be shared and to report a message to be registered beforehand, namely, the situation of the person to be called that the shared telephone set is being used but the person to be called is not busy by comparing each extension subscriber number corresponding to each telephone set stored in a main storage with an in-use extension subscriber number. CONSTITUTION:In order that plural extension subscribers receive telephone services, each extension subscriber registers which to use among telephone sets 1-3 beforehand to a main storage device 7. When an incoming is executed to the extension subscriber except for the extension subscriber using the telephone set 1 in a condition in which a call with the extension subscriber registered to the telephone set 2 is continued by executing an ordinary transmission connection, a central control unit 6 collates an extension subscriber number in the middle of using corresponding to the telephone set 1 stored in the main storage device 7, a connection through a switch 4 to a message storage circuit 8 is executed, and the message registered in a message storage circuit 8 beforehand that the person to be called is not the extension subscriber using the telephone set 1 but the person to be called is not busy is sent to a calling person.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a called party status notification system for automatic private branch exchange equipment.

[Conventional technology]

With conventional automatic private branch exchanges, there is no notification of the status of the called party, and if multiple extension subscribers share and use one telephone, one extension subscriber may use this telephone. When an incoming call arrives to another extension subscriber, a busy tone is sent to the caller of the incoming call even though that extension subscriber is present.

[Problem to be solved by the invention]

In the above-mentioned conventional automatic private branch exchange system, when multiple extension subscribers share a single telephone, if one extension subscriber receives an incoming call to another extension subscriber while the telephone is in use, The system only sends a busy tone to the caller of this incoming call, and has the disadvantage that it is not known whether the extension subscriber is busy or not.

[Means to solve the problem]

The called party status notification system of the present invention is an automatic private branch exchange system in which one telephone is shared by a number of extension subscribers, and each extension subscriber has a memory circuit for registering use when using the telephone. The present invention is characterized by comprising a control means for sending a pre-registered message to the calling party when a certain extension subscriber receives a call while another extension subscriber is using the telephone set. do.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of an automatic private branch exchange device showing an embodiment of the called party status notification system of the present invention.

In Fig. 1, 1 to 3 are telephones, 4 is a switch, 5 is a group of office line trunks, 6 is a central control unit, 7 is a main memory, and 8 is a message storage for registering the usage status of extension subscribers. It is a circuit.

Next, Fig. 2 is a diagram showing an example of the sharing relationship between the telephone number registered in advance in the main memory that can be clicked in Fig. 1 and each extension subscriber, and Fig. 3 is a diagram showing an example of the sharing relationship between the telephone number and each extension subscriber. 4 and 5 are diagrams showing examples of messages registered in the message storage circuit of FIG. 1; Figure 4 shows a message registered by an extension subscriber notifying that the extension subscriber is not absent but the shared telephone line is being used by another extension, and Figure 5 is similar to Figure 4. The case where a message is registered for each telephone is shown. This embodiment will be explained with reference to FIG.

Since a plurality of extension subscribers receive telephone service by pressing the button on the first section, each extension subscriber determines which of telephones 1 to 3 to use in advance by a known method in the main memory as shown in FIG. If 7 VC registration and p.

As a result, an incoming call to a certain extension subscriber drives an incoming call display circuit (not shown) of the corresponding telephone according to the telephone number registered in the main storage device 7.

However, if any extension subscriber is on a call using one of telephones 1 to 3, and an extension subscriber other than the extension subscriber currently using this telephone receives a call, the incoming call will be answered. Then, the called extension subscriber stores a message indicating that the subscriber is not busy in the message storage circuit H via the switch 4 under the control of the central control unit Id6 1611 by known means.

For example, when an extension subscriber who has registered the telephone IK makes a call and registers the use of the telephone 1 by known means, the use registration is stored in the main memory 7 via the central control unit 6. It is assumed that a normal outgoing connection is then made and a conversation is continued with a certain extension subscriber registered in the telephone set 2.

In this state, if there is an incoming call from the office line trunk group 5 or the telephone 3 to an extension subscriber other than the extension subscriber who has registered the above usage and is using the telephone 1, the central control unit [6] The extension subscriber information possessed by the call is analyzed and stored in the main memory 7.
It is identified which telephone set the extension subscriber stored in is associated with (see FIG. 2). Next, the central control unit #6 checks the extension subscriber number in use corresponding to the telephone set 1 stored in the main storage device 7 in order to confirm the number of the subscriber who is using the telephone set 1. Thereafter, when the central control device 6 determines that the call has been received by someone other than the extension subscriber who is using the telephone 1, the central control device 6 either calls the central office line trunk details 5 or the telephone 3, which is the calling party.
is connected to the message storage circuit 8 via the switch 4 by known means.

Then, a message is sent to the caller to the effect that the called party is not the extension subscriber using the telephone 1 and that the called party is not busy, which is registered in the message storage circuit 8 in advance. Send.

As a result, telephone number 1 is shared, but even if a certain extension subscriber receives a call while telephone number 1 is being used by another extension subscriber, that extension subscriber will not be able to respond to the caller of the incoming call. It is possible to notify that the call is not busy.

〔Effect of the invention〕

As explained above, when an extension subscriber who shares a telephone uses the telephone and makes a call after registering for use from the telephone, the i1TII control means is stored in the main memory. By comparing each stored extension subscriber number corresponding to each telephone with the extension subscriber number in use, it is determined that the extension subscriber who is the called party is not using the shared telephone. , a pre-registered message to the caller can notify the called party of the situation, such as that the shared telephone is in use but the called party is not busy. be.

[Brief explanation of drawings]

FIG. 1 shows an automatic private branch exchange system which shows one embodiment of the called party status notification system of the present invention! Figure 2 is a diagram showing an example of the sharing relationship between the telephone number and each extension subscriber, which are registered in advance in the main memory as shown in Figure 1, and Figure 3 is a diagram similar to Figure 1. Figures 4 and 5 show examples of messages registered in the message storage circuit of the xmvch button. It is a diagram. 1-3...Telephone, 4...--Switch, 5
. . . Office line trunk group, 6 . . Central control unit, 7 . . . Main storage device, 8 . . . Message storage circuit.

Claims (1)

[Claims] In an automatic private branch exchange device having a memory circuit shared by a plurality of extension subscribers of one telephone and in which each extension subscriber registers use when using the telephone, a certain extension subscriber uses the telephone. 1. A called party status notification system characterized by comprising a control means for sending a pre-registered message to a calling party when a call is received by another extension subscriber.