JPS61150445A - Display system for information on incoming call - Google Patents

Abstract

PURPOSE:To enable an extension subscriber to call back the subscriber at the remote side after a conversation is over by looking at the information on an incoming call addresses to the extension subscriber himself/herself during a busy mode displayed on a display device. CONSTITUTION:The extension subscriber 3 calls an extension subscriber 1 while the subscriber 1 is talking with an extension subscriber 2 via a switch SW4 and an IOT6. In such a case, a CPU11 performs the busy connection control to send the busy tones to the subscriber 3 in a generally known way. At the same time, the CPU11 writes the information on the subscriber 3 to the address bus of an LEN00, for example, of the subscriber 1 in a memory area 120 within an MM12 via a bus 14 and also transfers said information to a D7 owned by the subscriber 1 via the bus 14 and a DC10 for display. Thus the subscriber 1 looks at the display of the D7 to know in detains not only the waiting tones but the incoming call information showing the calling subscriber.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for displaying incoming call information, and more particularly to a method for displaying incoming call information in an automatic private branch exchange apparatus having a display for extension subscribers.

[Conventional technology]

Traditionally, this method of displaying information has been such that when an extension subscriber attempts to receive a call from another subscriber while the subscriber is on the line, a busy tone is sent to the calling subscriber who attempted to receive the call; A method of sending a waiting tone to extension subscribers was popular.

[Problem that the invention seeks to solve]

The above-mentioned conventional call receiving system has the disadvantage that it is not possible to call back the calling subscriber after the call ends, since the incoming call information to the extension subscriber who is currently talking cannot be known.

[Means for solving problems]

The present invention provides an automatic private branch exchange device having a display for each extension subscriber, which is equipped with a memory circuit for storing incoming call information for each extension subscriber, and in which a call is received to the extension subscriber who is currently talking. Information about the calling subscriber who attempted the extension is displayed on the display of the extension subscriber.

〔Example〕

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

FIG. 1 is a block diagram showing an embodiment of the incoming call information display method of the present invention, and FIG. 2 is a memory configuration diagram showing an example of the main storage device in FIG. 1.

In FIG. 1, extension subscribers 1, 2.3 connected to a switch (hereinafter referred to as 5W) 4 are connected to a display unit (hereinafter referred to as D) 7, respectively.
8.9, and SW4 has a central office line trunk (hereinafter referred to as TRK).
5. Local trunk (hereinafter referred to as 10T) 6. A central office relay stand (hereinafter referred to as ATT) 13 is connected. Further, SW4 is connected to a central control unit (hereinafter referred to as CPU) 11, a main memory unit (hereinafter referred to as MM) 12, and a display control unit (hereinafter referred to as DC) 10 via a bus 14, and the DCIO transmits incoming call information to D7, 8, and 9. Display control is performed.

In addition, the MM12, as shown in FIG.
Storage position at W4 (hereinafter referred to as LEN) 00.01. - Correspondingly, a memory area 120 is provided for storing incoming call information.

Next, the operation of this embodiment will be explained.

In FIG. 1, when extension subscriber 3 calls extension subscriber 1 while extension subscriber 1 is talking to extension subscriber 2 via 8W4 and 10T6, CPU II calls extension subscriber 1 as is generally known. 3, performs busy connection control to send a busy tone. At the same time, the CPU II loads the subscriber information of the extension subscriber 3 into the address of the LBN (for example, LHNOO) of the extension subscriber 1 in the memory area 120 in the MM 12 via the bus 14, and also transfers the information to the bus 14. It is transferred to D7 of extension subscriber 1 via DClo and displayed.

Therefore, by looking at the display D7, the extension subscriber 1 can know not only the waiting tone but also the incoming call information about where the call came from during the call.

Further, in FIG. 1, when a call arrives at TRK 5, ATT 13 normally responds to the call first, as is generally known. When the connection request destination from TRK5 is extension subscriber 1, the operator inputs extension subscriber 10 number from ATT13, but since extension subscriber 1 is already on the phone with common subscriber 2, CPUUI 1. ATT13 via 8W4
Sends a busy tone to. When a central office line trunk message is input from the ATT 13, the CPU II writes the central office trunk information to a predetermined address (for example, the address of LHNOO) in the memory area 120 in the MM12, and also sends the information to the extension subscriber 1 through the DCIO. The information is transferred to D7 owned by the extension subscriber 1, and the information is displayed, allowing the extension subscriber 1 to know that there is a peripheral incoming call.

Furthermore, when extension subscriber 1 dials a specific number at 8 in FIG. The extension subscriber 1 is able to know the trt information of all incoming calls to him/her during the call.

〔Effect of the invention〕

As explained above, the present invention allows each extension subscriber to call back the caller after the call ends by viewing the incoming call information for himself/herself displayed on the display. Therefore, new services that could not be realized in the past can be provided, which has the effect of improving service quality.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the incoming call l# report display method of the present invention, and FIG. 21 is a memory configuration diagram showing an example of the main storage device in FIG. 1. 1.2.3... Extension subscriber, 4...-Switch (SW), 5... Central office trunk (TRK)
), 6... In-house trunk (IOT), ? , 8
．． 9...Display device (D), 10...Display control device (DC), 11...Central control device (C
PU), 12... Main memory (MM), 13.
...Station line relay stand (ATT), 14 ... Bus, 120 ... Memory area.

Claims (1)

[Claims] In an automatic private branch exchange device having a display for each extension subscriber, each extension subscriber is provided with a memory circuit for storing incoming call information to that extension subscriber, and an attempt is made to receive a call to an extension subscriber who is currently on a call. An incoming call information display method characterized by displaying information of a calling subscriber on a display of the extension subscriber.