JPS6085696A - Key telephone set - Google Patents

Abstract

PURPOSE:To cut wasteful process of catching unnecessary circuits once on connecting extension by refereing to circuit condition and circuit number into which a key telephone set can outgo at the time of depressing a dial button and by providing a means capable of automatically selecting, catching and outgoing a vacant circuit into which the telephone set can dispatch a message. CONSTITUTION:When one of key telephone sets T1-Tn is hookedoff, its information is transmitted to a controller 7 through a telephone set interface 2. Then, when an operator handles a dial, the information is transmitted to the controller 7 similarly, and the controller 7 judges for the first time that the operator tries to dispatch a message into circuits L1-Lk. The controller 7 sends control instructions to a circuit selection part 6, which selects an avialable circuit refering to storing contents of a circuit condition memory 5 and a circuit button number setting part 4, and sends connecting control instructions to a circuit interface 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to an automatic line acquisition function of a button telephone device when making a call.

[Description of prior art]

Conventional key telephone devices are configured so that the operator manually captures the line when making a call.

Some devices automatically capture this line, but you can set the line to be captured on the key telephone in advance, and when the handset is lifted or the speaker button is pressed, the set line is automatically captured. It was configured to capture automatically. With such devices, even when making an extension call from a key telephone, the previously set line is selected when the handset goes off-hook or the speaker button is pressed, and the user then has to reacquire the desired extension. Become.

[Purpose of the invention]

The present invention facilitates the operation of a button telephone device, and also
The purpose is to eliminate the waste of seizing an unnecessary line when calling an extension.

[Features of the invention]

The present invention enables the button telephone to make a call by referring to the line number and line status to which the button telephone can make calls when the dial button is pressed after the handset off-hook or the speaker button of the button telephone is pressed. The present invention is characterized in that it includes a means for automatically selecting and capturing an idle line to make a call.

That is, a plurality of line terminals for connecting telephone lines, a line interface unit connected to the line terminals, a plurality of telephone terminals for connecting to a button telephone, a telephone interface unit to which the telephone terminals are connected, and the line interface section connected to the line terminals. A call path switch section configured to connect the call paths of the interface section to each other; In a button telephone device comprising a control circuit that sends a control signal to the call path switch unit and the line interface unit based on control information, the control circuit is configured in advance to set a line to which a call can be made for each of the telephone terminals. and a line status memory section that stores the currently used line; and means for selecting one of the line terminals connected to the line interface by referring to the contents stored in the line status memory section.

[Explanation based on the first embodiment] The figure is a block diagram of the key telephone device according to the first embodiment of the present invention. Line terminal L accommodated in the above button telephone device
1, L2...Lk are connected to the line interface section 1, and are connected to the button telephone terminals T1, T2...T of the terminal.
n is connected to the telephone interface section 2. The line interface section 1 and the telephone interface section 2 are connected to a call path switch section 3. The line button number setting section 4 and the line status memory section 5 are connected to the line selection section 6. These line interface section 1, telephone interface section 2, call path switch section 3, line button number setting section 4, line status memory section 5, and line selection section 6
is connected to and controlled by the control section 7.

The line interface unit 1 captures the line under the control of the control unit 7 and sends a dial signal to the line side. The telephone interface unit 2 connects the communication path of the button telephone to the communication path switch unit 3, takes in operation information of the telephone to the control unit 7, and sends display information from the control unit 7 to the telephone. The communication path switch section 3 is constituted by a matrix switch so that the line interface, the ace section 1, and the telephone interface section 2 can be exchanged and connected, and the connection is controlled by the control section 7. The part surrounded by a dashed line 11 in the figure is a control circuit. The line button number setting section 4 stores line button numbers that can be used to make calls for each button telephone. The contents stored in the line button number setting section 4 are set by a specific button telephone. The line status memory section 5 stores the control status of the line. The control state of the line is written by the control section 7. Based on the number of the button telephone set outputted from the control section 7, the line selection section 6 refers to the stored contents of the line button number call setting section 4 and the line status memory section 5, and selects an empty line to which the button telephone set can make a call. and control section 7
Output to.

In a device configured in this way, key telephones T1 to
When one of the T11 goes off-hook, the information is transmitted to the control unit 7 through the telephone interface unit 2. The device of the present invention does not yet perform line selection in this state. Next, when the operator operates the dial, the information is similarly transmitted to the control unit 7, and it is determined for the first time that the operator is attempting to make a call to the lines L1 to Lk.

As a result, the control unit 7 sends a control command to the line selection unit 6, and the line selection unit 6 refers to the stored contents of the line status memory unit 5 and line button number setting unit 4, selects an available line, and selects a line that can be used. A connection control command is sent to the interface section 1. During this time, the dial information sent from the telephone is temporarily held in the line button number setting unit 4, and after a dial tone is received on the selected line, it is translated into a dial signal by the control unit 7 and sent to that line. Ru. When the transmission of the dial signal is completed, the control section 7 sends a connection control command to the call path switch section 3 to connect the calling telephone to the line to which the dial signal was sent.

On the other hand, if one of the telephones T1 to Tn is off-hook and the extension selection button is operated instead of the dial, the control unit 7 temporarily stores the extension number and the telephone interface unit 2 A control command is sent to the extension number, and a ringing signal is sent to the telephone set corresponding to that extension number. When the extension telephone responds, the control unit 7 sends a connection control command to the call path switch unit 3 to connect the call path of the extension telephone to the call path of the telephone that made the call.

〔Effect of the invention〕

As explained above, according to the present invention, a line is not automatically selected when the handset goes off-hook, and a call to an outside line is determined only after dialing is performed, and the line is automatically selected. Since a line is selected automatically, there is no need for the operator to select a line, and the operation is as simple as with a stand-alone telephone. Another advantageous feature is that once a line is selected, unnecessary operations such as determining that it is an extension call and releasing that line are not performed.

[Brief explanation of the drawing]

The figure is a block diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Line interface part, 2... Telephone in 1 interface part, 3... Call path switch part, 4...
・Line button number setting section, 5... line status memory section,
6... Line selection section, 7... Control section, 11... Control circuit, L1-Lk... Line terminal, T1-T1. ...
button telephone terminal. Patent applicant: NEC Corporation, - Representative: Patent attorney Naoki Ide. 1.1・；ゝ′、1
．． ! n

Claims (1)

[Claims] (1) A plurality of line terminals for connecting telephone lines, a line interface section to which these line terminals are connected, a plurality of telephone terminals for connecting to a button telephone, and a telephone interface section to which these telephone terminals are connected; a call path switch unit configured to connect the call paths of the line interface unit and the telephone interface unit; and the line interface unit;
a control circuit connected to the telephone interface section and the line switch section, and configured to send a control signal to the telephone interface section and the line interface section based on control of a button telephone that arrives at the telephone interface section. In the button telephone device, the control circuit includes a line button number setting section that presets a line to which a call can be made for each terminal of the telephone, and a line status memory section that stores the currently used line; Furthermore, the control circuit is configured to connect to the line interface by referring to the stored contents of the line button number setting unit and the line status memory unit based on dial operation information received from the telephone terminal to the telephone interface unit. 1. A button telephone device comprising means for selecting one of the selected line terminals.