JPS63107347A - Private branch exchange - Google Patents

Abstract

PURPOSE:To eliminate the need for a caller to repeat redialing by incorporating a voice storage device and storing a message of a caller in the presence of a call request from 3rd party during talking and receiving the message after the end of talking. CONSTITUTION:A trunk line subscriber 2 dials an extension 9 of a PBX 4 via a public network 3. A CC6 informs the busy state to the subscriber 2 via the public network 3 and stores the message to the storage device 7. When the CC6 is in on-hook, the content of the storage device is informed to the called party 9.

Description

[Detailed description of the invention] [Technical field] The present invention relates to a private branch exchange.

[Conventional Example] Conventionally, in this type of device, when the called party is on the phone,
This system has the disadvantage that a busy tone indicating that the call is busy is returned to the caller, and the caller then calls again after waiting a while.

[Objective] The object of the present invention is to eliminate the drawbacks of the above-mentioned prior art and to eliminate the need for the caller to call again when a call is busy.

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

FIG. 1 shows the configuration of this embodiment. 1.2 is a public network, 4 is a PBX, 5 is a central office line interface, 6 is a central processing unit, and 7 is a storage device. Messages when the phone is busy are stored. 8 is an extension interface section, 9.10,
n is an extension subscriber. Next, suppose that in the above configuration, central office line subscriber 1 and extension subscriber 9 are currently busy, and then central office line subscriber 2 makes a call to extension subscriber 9 of PBX 4 via public network 3. Then, the calling signal is transmitted to the central processing unit (CC) 6 via the central office line interface 5. Next, the CC 6 sends a message via the extension interface 8 indicating that the called party 9 is currently busy. Recognize, then CC16
notifies the central office line subscriber 2 via the central office line interface 5 and the public network 3 that a conversation is in progress, and stores the message in the storage device 7.

Next, the CC 16 detects whether the called party 9 is on-hook via the extension interface 8, and if it is on-hook, notifies the called party 9 of the contents of the storage device described above.

FIG. 2 is a flowchart showing the operation of this embodiment. A program for controlling the operation based on the flowchart shown in FIG. 2 is stored in the program memory of the central controller 6.

When a calling signal from the public 1 network 3 is detected in step S1 of FIG. 2, the process proceeds to step S2, and step S2
After connecting the line, enter the extension phone number from the other party. Then, when the extension telephone number is input, it is determined in step S3 whether or not the telephone with the input extension telephone number is in use, and if it is in use, the process advances to step S4, where a busy tone is sent to the called party, and then the call is made. The voice message from the destination is stored in the storage device 7. When the accumulation of voice messages from the called party is completed, the process proceeds to step S5 and step S2
The end of use of the telephone connected to the extension telephone number entered in is monitored, and when the use is completed, the process proceeds to step S6, where a call is made to the above extension telephone number, the other party's operator is called, and then a voice message from the storage device is sent. .

On the other hand, if the telephone set to the telephone extension number entered in step S3 is not in use, the process proceeds to step S7, where the line is connected to the telephone set corresponding to the telephone extension number entered and a call is made.

As described above, in this embodiment, when the called party is busy, the PBX
recognizes that the called party is busy, answers the caller, MIMs the caller's message to a storage device, and responds to the caller when the called party's phone is no longer busy. By transmitting the caller's message to the called party from the storage device, there is no need to repeat calling or re-calling, and efficient service becomes possible.

[Effect] As described above, according to the present invention, when making a call to a busy person,
It has become possible for both the calling party and the called party to receive prompt service without wasting time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of this embodiment, and FIG. 2 is a flowchart showing the operation of this embodiment. l, 2 are central office line subscribers, 3 is a public network, 4 is a private branch exchange, 5 is a central office line interface unit, 6 is a central processing unit, 7 is a storage unit, 8 is an extension interface unit, 9.10, n is an extension line I am a subscriber.

Claims (1)

[Claims] The private branch exchange has a built-in voice storage device, so that the third
A private branch exchange characterized in that when a caller requests a call from a person, the private branch exchange stores the caller's message in the voice storage device, and after the call ends, the message is transmitted from the voice storage device. .