JPH05207542A - Automatic private branch exchange - Google Patents

Abstract

PURPOSE:To attain the arrival of a call to a specific extension telephone set in the private branch of automatic exchange having an incoming call distribute function. CONSTITUTION:The exchange is provided with a caller number storage section 27 using and storing a caller number sent from a station, a subscriber number storage section 30 limiting a called extension in response to the caller number, an extension information storage section 31 and a called information storage section 29. When the call having the caller number comes from the station, an extension telephone set in response to the caller number is selected to implement distribution incoming calls As a result, a caller without any notice makes only an extension telephone set relating to the caller as an objective called party from an incoming call distribute object extension telephone set group and it is reduced that an extension telephone set user independently of the caller interrupts its job and makes reception of the call.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a private automatic branch exchange capable of distributing incoming calls from a central office line to a plurality of extension telephones.

[0002]

2. Description of the Related Art The structure of a conventional private automatic branch exchange will be described below with reference to the drawings. FIG. 3 is a block diagram showing a configuration of a conventional private automatic branch exchange having a call distribution function, and FIG. 4 is a data configuration diagram of an incoming call information storage unit which is a part of a storage unit in the private automatic branch exchange.

Reference numeral 5 in FIG. 3 is a private branch exchange for performing a switching process. It consists of a group of station lines 4 composed of station lines 1 to 3 and connecting to stations, and a plurality of extension telephones (extension numbers 100 to 109). The extension telephone group 6 configured as described above is connected. In the extension telephone group 6, extension numbers 100 to 103 are group 1, extension numbers 102 to 105 are group 2, and extension numbers 104 to 104.
109 are used after being divided into 3 groups called group 3.

The private branch exchange 5 is connected to an extension telephone group 6 and a station line interface section 7 for controlling the DC loop closure / opening of the station lines 1 to 3 and detecting an incoming call from the station lines 1 to 3. The extension interface unit 8 that controls the ringing of the extension telephone and detects operations such as incoming call response, call origination, and dialing, and the control unit 9 that controls the interface units 7 and 8 and performs exchange processing. It is composed of a data transmission unit 10 for transmitting data between the interface units 7 and 8 and a storage unit 11 for storing exchange information. The storage unit 11 is provided with an incoming call information storage unit 13 in which data is registered at the terminal 12.

The incoming call information storage unit 13, as shown in FIG.
Information is recorded for each incoming call group table, and an incoming call of the office line 1 is stored so as to be an incoming call to the extension telephones 100 to 103 belonging to the group 1. Similarly, the office line 2 is the group 2 and the office line 3 is the Incoming calls are distributed to and stored in group 3.

The operation of the conventional private automatic branch exchange constructed as described above will be described below on the assumption that an incoming call has occurred on the central office line 1. When an incoming call generated on the office line 1 is detected by the office line interface unit 7, the incoming call detection data is transmitted to the control unit 9 via the data transmission unit 10. Upon receiving the incoming call detection data, the control unit 9 reads out the incoming call destination information on the central line 1 from the incoming call information storage unit 13 in the storage unit 11 to select the incoming call destination extension telephone, and the target incoming call destination is the group. Confirm that the extension number is 100 to 103. Extension interface unit 8 is group 1
The extension telephone group 6 is ringed to transmit incoming data to the extension interface unit 8 via the data transmission unit 10 so as to notify the called party that an incoming call has occurred on the office line 1. When the extension interface unit 8 receives the incoming call data, processing for starting ringing of the extension telephones of extension numbers 100 to 103 which are the incoming call targets is executed, and processing for starting ringing of the corresponding extension telephones is performed. .

[0007]

However, in the above-mentioned incoming call distribution function in the conventional private automatic branch exchange, when the called party who the calling party intends to answer, the call is transferred to the call as it is, but there is no problem. , The probability is inversely proportional to the number of registered extension numbers for distribution of incoming calls, so the probability that the incoming call responder is an unintended person of the caller naturally increases,
There is a problem that an incoming call responder unintended by the calling party is interrupted in the work, and in addition, work such as calling or transfer of the called party intended by the calling party is imposed.

The present invention solves the above problem and makes it possible to increase the probability that the called party who the caller intends will respond, and to reduce the work of answering and forwarding the call by a party unrelated to the caller. The purpose is to provide a private automatic exchange.

[0009]

In order to solve the above problems, the present invention has a configuration using a service of a station in which a caller's number is transmitted together with an incoming signal when an incoming call from the station is received, and the call is issued to a storage unit. The caller number storage unit and the extension information storage unit for limiting the ringing extension corresponding to the calling number are provided.

[0010]

With the above configuration, when an incoming call is received from a station, the extension telephone set to ring is determined according to the caller's number by referring to the extension information storage unit. Therefore, the extension telephone set associated with the caller is determined. It is possible to distribute incoming calls to the caller, and the callee's intended callee is more likely to answer.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a private branch exchange of an embodiment according to the present invention. Since the station line group 4 and the extension telephone group 6 are the same as the conventional ones, the description thereof will be omitted.

The private branch exchange 21 controls the closing / opening of the DC loops of the office lines 1 to 3 and the office line interface 22 for detecting the incoming signal from the office lines 1 to 3 and the calling number.
And the extension telephone group 6 are connected to each other, and an extension interface section 23 for controlling ringing of the extension telephone and detecting operations such as incoming call response, outgoing call, and dial, and each interface section.
A control unit 24 as a selection unit that controls the 22 and 23 and performs exchange processing, a data transmission unit 25 that performs data transmission between the control unit 24 and each interface unit 22 and 23, and a storage that stores exchange information. And part 26.

The storage unit 26 is registered by the caller number storage unit 27 for storing the caller number transmitted from the station and the input at the terminal 28, and is registered as a destination of the call to each of the office lines 1 to 3. An incoming call information storage unit 29 in which information is stored, and a subscriber number storage unit 30 registered by inputting at the terminal 28 or a special number + subscriber number after off-hook at the extension telephone group 6, When registering the subscriber number in this subscriber number storage unit 30,
It is provided with an extension telephone having an extension number designated by the terminal 28 and an extension information storage unit 31 for storing information of the extension telephone which has registered the subscriber number. Here, FIG. 2 shows an example of the data configuration of each storage unit in the storage unit 26.

The operation of the private automatic branch exchange constructed as described above will be described below with respect to the subscriber line 1234 on the station line 1.
It will be described in detail with reference to FIGS. 1 and 2 assuming that an incoming call of 567 has occurred.

Incoming signal from station and calling party number 123
When 4567 is detected by the local line interface unit 22,
Data transmission unit for incoming call detection data and calling party number data
It is transmitted to the control unit 24 via 25. Upon receiving the incoming call detection data and the calling party number data, the control unit 24 refers to the data in the incoming call information storage unit 29 of the storage unit 26 and confirms that the called party is the group 1 and calls the calling party number. The calling party number data is written in the storage section 27, and it is searched whether or not this calling party number data is registered in the subscriber number storage section 30.

If there is no registration in the subscriber number storage unit 30, the extension number data of the group 1 is read out, and the incoming data is transmitted to the extension interface unit 23 via the data transmission unit 25, the extension interface which has received the data. Department
23 starts ringing extension phones with extensions 100-103.

If the subscriber number storage unit 30 is registered, the extension to be ringed with this subscriber number is read from the extension information storage unit 31, and it is confirmed that the extension numbers to be ringed are 100, 104, and 109. The extension number other than group 1 obtained from the incoming call information storage unit 31 is deleted from the data to derive the extension number 100, and it is confirmed that this incoming call is the extension number 100, and the extension number 100 is the extension telephone. When the incoming data for ringing is transmitted to the extension interface unit 23 via the data transmission unit 25, the extension interface unit
23, the ringing of the corresponding extension telephone is started.

As a result, the extension telephone set irrelevant to the calling party does not ring and the probability of the called party response intended by the calling party is increased.

[0019]

As described above, according to the present invention, in the private automatic branch exchange having the incoming call distribution function, it becomes possible to select the extension telephone of the called party according to the calling party number. Does not ring the unrelated extension telephone, the probability of the called party's intended caller response is increased, and the work interruption of the unrelated party does not occur.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a private automatic branch exchange according to an embodiment of the present invention.

FIG. 2 is a data configuration diagram of each storage unit in the private branch exchange.

FIG. 3 is a block diagram showing a configuration of a conventional private automatic branch exchange.

FIG. 4 is a data configuration diagram of each storage unit in a conventional private automatic branch exchange.

[Explanation of symbols]

 4 Station line group 6 Extension telephone group 21 Private branch exchange 22 Station line interface section 23 Extension interface section 24 Control section 25 Data transmission section 26 Storage section 28 Terminal 27 Caller number storage section 29 Incoming information storage section 30 Subscriber number storage Section 31 Extension information storage section

Claims (1)

[Claims] 1. A station line interface unit for controlling connection / disconnection of a station line and taking an electrical interface, an extension interface unit for ringing a connected extension telephone, and data enabling transmission of control data. Transmission line,
Calling party number storage means for storing a calling party number transmitted from a station line when an incoming call is made to the station line interface section, and a plurality of extension telephones to be ringed in response to the incoming call from the calling party number to the calling party number. An automatic private branch exchange that includes an extension information storage unit that stores related extension telephones, and selects and limits the extension telephones that ring according to a calling number.