JP3134397B2 - Telephone exchange - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone exchange.

[0002]

2. Description of the Related Art Conventionally, in a hybrid private branch exchange which can use both a key telephone and a normal standard single telephone or an answering machine and a data terminal (hereinafter referred to as a general terminal), an extension is connected to the same extension port. As a connection device, a key telephone and a general terminal device can be used in parallel connection. When an incoming call occurs at the extension, the bells of both the key telephone and the general terminal device are ringed.

[0003]

In the conventional system, when an incoming call is received at one extension port connected in parallel, the bells of both the key telephone and the general terminal are always ringed, and the key telephone is called. It is not possible to make only one of the terminal and the general terminal device ring. For this reason, the bell of the extension connection device that is not the extension person who wants to call is also ringed, and the extension person who is not the caller may answer.

An object of the present invention is to provide a telephone exchange which can designate and call one of the extension connecting devices when a key telephone and a general terminal device are connected in parallel to the same extension port. .

[0005]

In order to solve the above problems, according to the present invention, a single extension port communicates with a data communication line.
Talk lines are also provided, and the data communication of this extension port is performed.
The key telephone is connected via both the credit line and the call line.
Same as the extension port to which this key telephone is connected
To the extension line of the extension
A telephone exchange to which a general terminal device can be connected, comprising: a DC loop current monitoring means for monitoring a DC loop current of an extension communication line; and a data communication means for exchanging data with a key telephone via a data communication line. A bell signal generating means for transmitting a bell signal to the telephone line, a central line trunk interface means for controlling an interface with a central line trunk, and a telephone line for an internal telephone line and a central line trunk interface means. Call path to connect or release
Means and said call for lines, and a control unit that controls each unit within the system analyzes the information which come transmitted via the data communication line and the central office trunk interface means, the caller under the control of said control means Dialed from extension
And Dial-analysis means for analyzing the information, button phone and one
General terminal equipment connected to the same extension port
When a call arrives at the line port, the dial analysis
Based on the analysis result from the means, the analysis result is key telephone
Data communication by data communication means
Bell ringing data is sent to the key telephone via the service line
When a general terminal device is indicated, the bell
The general terminal device via a telephone line by signal generation means
Is controlled to transmit a bell signal .

[0006]

With the above configuration, when an incoming call to an extension port connected in parallel between a key telephone and a general terminal device occurs, the extension connection device specified by the dial analysis means is analyzed. Thus, each extension connecting device can be individually designated and called.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A private branch exchange will be described below as an embodiment of the telephone exchange of the present invention with reference to the drawings. FIG. 1 is a block diagram of a private branch exchange and an extension terminal according to the present embodiment.

In FIG. 1, reference numeral 1 denotes a private branch exchange.
Reference numeral 2 denotes a key telephone connected as an extension terminal of the private branch exchange 1. Reference numeral 3 denotes a standard telephone connected as an extension terminal of the private branch exchange 1. Reference numeral 4 denotes a data communication line connected to the key telephone 2. Reference numeral 5 denotes a telephone line connected to both the key telephone 2 and the standard telephone 3.

In the private branch exchange 1, reference numeral 6 denotes data communication means for exchanging data with the key telephone 2 via the data communication line. Reference numeral 7 denotes DC loop current monitoring means for monitoring the DC loop current of the communication line 5 and monitoring the pulse dial transmitted from the standard telephone 3. Reference numeral 8 denotes a bell signal generating means for transmitting a bell signal to the communication line 5.

Reference numeral 9 denotes an office line. Reference numeral 10 denotes an office trunk interface means for performing an electrical interface with the office 9. Reference numeral 11 denotes a communication path means for connecting or opening a voice communication path between the plurality of communication lines 5 and the office line trunk interface means 10. 12 receives information from the data communication means 6, the DC loop current monitoring means 7, and the local trunk interface means 10, and receives data communication means, DC loop current monitoring means, bell signal generation means, dial analysis means, and parallel connection. Control means for controlling the enable / disable control means and the calling method storage means. Numeral 13 is a dial analyzing means for analyzing a dial dialed from an extension under the control of the control means 12. Reference numeral 14 denotes a parallel connection enable / disable control unit that stores the enable / disable of the parallel connection between the key telephone and the general terminal device. 15 selects whether to ring the bell of both the key telephone and the general terminal device or the ring of only one of the key telephone and the general terminal device when an incoming call occurs in the extension of the parallel connection during the parallel connection. This is a calling method storage means. Reference numeral 16 denotes an extension interface.

Next, the configuration of the key telephone 2 will be described. Reference numeral 17 denotes data communication means for exchanging data with the data communication means 6 in the private branch exchange 1 via the data communication line 4. Reference numeral 18 denotes an audible tone generating means for generating a bell sound. Reference numeral 19 denotes operation means provided with an outside line button, a dial button, a function button, and the like. Reference numeral 20 denotes a receiver. Reference numeral 21 denotes a communication circuit means for enabling a telephone call with the receiver 20 via the communication line 5. A control unit 22 controls each unit based on an input from the data communication unit 17 or the operation unit 19. Reference numeral 23 denotes a display unit for displaying a lamp in use of the own terminal or a lamp in use of another terminal to the user.

The operation of the embodiment constructed as described above will be described with reference to FIG. FIG. 2 is a flowchart in which the control means 12 of the private branch exchange controls each unit when an incoming call to the connected extension occurs.

First, when an extension arrives (step 1), the control unit 12 refers to the parallel connection possible / impossible storage means and determines whether or not parallel connection is set (step 2). If it is set to, it is determined whether the extension connection device of the received extension is a key telephone or a general terminal device (step 3). If it is a key telephone, the bell ringing data is transmitted to the key telephone 2 via the data communication line 4. The data communication means 6 is controlled so as to send a call (step 4).
The bell signal generator 8 is controlled to transmit a bell signal to the standard telephone 3 (step 5).

On the other hand, if it is set to be connectable in parallel,
Next, refer to the calling method storage means for selecting the ringing method of the bell of the extension connection device at the time of parallel connection, and be sure to ring the bell of both the key telephone and the general terminal device or the extension ringing by the extension connection device designation number. It is determined whether the connected device can be designated (step 6). If the mode is set so that both the key telephone and the general terminal ring the bell, the bell is ringed to the key telephone 2 via the data communication line 4. The data communication means 6 is controlled so as to transmit data (step 7), and the bell signal generator 8 is controlled so as to transmit a bell signal to the standard telephone 3 for the communication line 5 (step 8). .

On the other hand, if the mode is set so that the extension connected device to be sounded by the extension connected device designation number can be designated, control is performed so that the extension connected device specified by the dial analyzing means is analyzed (step 9). If the key telephone is designated, the data communication means 6 is controlled so as to transmit the bell ringing data to the key telephone 2 via the data communication line 4 (step 10). The bell signal generator 8 is controlled so that a bell signal is transmitted to the standard telephone 3 for the service line 5 (step 11).

In step 10, the bell of the standard telephone 3 rings. In step 11, the data communication unit 17 receives the bell ringing data via the data communication line 4 and transfers it to the control unit 22 in the key telephone 2. The control unit 22 controls the audible tone generation unit 18 according to the received bell sounding data to generate a bell sound.

FIG. 3 shows an example of data in the parallel connection possible / impossible storage means. FIG. 4 shows an example of data in the calling method storage means.

[0018]

As described above, according to the present invention, there is provided means for analyzing the extension connection equipment number following the extension number, and based on the analysis result, only one of the key telephone or the general terminal apparatus is provided. By ringing the bell, it is possible to specify and call an extension connecting device. For example, when a key telephone and a general terminal device are connected in parallel to one extension and used by different people, the bell of the extension connection device that is not the caller is not ringing, so the person who is not the caller is not Will not respond. When a facsimile or the like is connected as a general terminal device, if the operator responds to an incoming call from an outside line and wants to use the facsimile of the extension to be called, the facsimile is directly specified by specifying the extension connection device designation number of the general terminal device. Since the call can be forwarded to the other party, the call can be forwarded without any trouble of the extension person at the forwarding destination.

[Brief description of the drawings]

FIG. 1 is a block diagram of a private branch exchange and an extension terminal according to an embodiment of the present invention.

FIG. 2 is a flowchart showing control when an incoming call to an extension occurs in the private automatic exchange;

FIG. 3 is an explanatory diagram showing an example of data in a parallel connectable / impossible storage unit;

FIG. 4 is an explanatory diagram showing an example of data in a calling method storage unit;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Private branch exchange 2 Button telephone 3 Standard telephone 6 Data communication line 7 DC loop current monitoring means 8 Bell signal generation means 10 Local line trunk interface means 11 Communication path means 12 Control means 13 Dial analysis means 15 Calling method storage means

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04M 3/42 H04Q 3/58-3/62

Claims (1)

(57) [Claims] 1. A telephone line for data communication with a single extension port
With the extension line, data communication of this extension port
The key telephone is connected via both the
And the same as the extension port to which this key telephone is connected
Generally used in parallel with the key phone for the extension line
A telephone exchange to which a terminal device can be connected, a DC loop current monitoring means for monitoring a DC loop current of an extension communication line, and a data communication means for performing data exchange with a key telephone via a data communication line. Connecting a bell signal generating means for transmitting a bell signal to the communication line, an office trunk interface means for controlling an interface with the office trunk, and an internal communication line and a communication path of the office trunk interface means. Or communication path means to be released, control means for analyzing information sent via the communication line, data communication line and central office trunk interface means to control each unit in the system, and Controlled dialing from calling extension
Dial analysis means for analyzing the information received, and the key telephone and general terminal device are connected to the same extension port
Incoming calls to that extension port
Analysis based on the analysis result from the dial analysis means
Data communication means when the result indicates a key telephone
To the key telephone via the data communication line
To send ringing data and to indicate a general terminal device.
The bell signal generating means
Control to send the bell signal to the general terminal device.
A telephone exchange characterized by the following .