JPS6135697A - Key telephone system - Google Patents

Abstract

PURPOSE:To judge easily the condition of a circuit by displaying the used state, incoming one, holding one and idle one of the circuit with characters and numerics. CONSTITUTION:When the incoming is obtained on for instance, an L1 of a trunk line 1, an incoming signal is received by a data receiving circuit 241. A display data generator circuit 242 is informed of the received result, and generates display data for expressing the incoming. Said display data is transmitted to a control circuit 44 of each key telephone system through a telephone set interface part 23. Thus each key telephone system display circuit 43 causes an LCD of a trunk line button with display 451 corresponding to the trunk line L1 to display the effect with characters. The holding state, idle state, etc., of the circuit are also displayed with characters and numerics in the same manner. Thus the condition of the circuit can be easily judged.

Description

[Detailed description of the invention] The present invention relates to a button telephone device.

Conventionally, the line status display of this type of key telephone device was ~・
'tiA Lighting a light emitting source such as a photodiode, blinking quickly,
Slow blinking and turning off the light indicate the line's usage status, incoming call status, hold status, and idle status, respectively.
The drawback was that it was difficult to judge the line status.

SUMMARY OF THE INVENTION An object of the present invention is to provide a button telephone device that solves the above-mentioned drawbacks by specifically displaying the status using letters and numbers, and allows the status of the line to be easily determined.

According to the present invention, an I-button telephone device includes a plurality of button telephones and a main device that accommodates a central office line and connects and controls the plurality of button telephones and the central office line, or connects and controls the button telephones to each other. , a central office line button that captures a central office line or an extension button that captures an internal line provided on a button telephone;
These central office line buttons include a display device that can display letters and numbers corresponding to the extension button, and the key telephone set is characterized in that the central office line or extension status is displayed on the display device using letters and numbers. It will be done.

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

In the figure, the main device 2 includes a plurality of central office lines 1 (Ll).

Lx, L+, ..., Ln), and a telephone line 3
a and a control signal line 3b to each button telephone 4"*42. . . +4H.

The main device 2 includes a central office line interface unit 21 that accommodates a plurality of central office lines 1, detects incoming calls, and sends out number information, and a switching unit that connects extension lines to each other and between extension lines and central office lines. a telephone interface section 23 that transmits and receives signals or data between each button telephone, the telephone channel switch section 22 and the control circuit 24, and a telephone interface section 23 that transmits and receives control signals (data). and a control circuit 24 for controlling each section.

The control circuit 24 receives an incoming call signal for each office line from the office line interface unit 21, and also communicates with the telephone incoming signal circuit 41,
and a display data generation circuit 242 that generates display data corresponding to received data.

Here, the display data refers to each button telephone 41. ~4m station line button display with display (liquid crystal display (LC)
D) This is display control data for displaying . When the data reception circuit wr 241 detects pending data or office line usage data, the control circuit 24 controls the call path switch section 22 to hold the office line or connect the office line.

FIG. 2 is a block diagram of the button telephone 41, and other button telephones have the same structure.

In the figure, a telephone circuit 41 connected to the telephone line 3a for receiving or transmitting audio signals, a number button,
Hold button, station line button with display 45 Emperor.

, 45n, etc., a button monitoring circuit 42 that detects pressing of buttons such as
Based on the display data from the control signal line 3b, the station line button with indicator 451. . . , 45n, and a control circuit 44 that sends data by pressing a button, receives various control signals and data, and controls each section. Station line button 4 with display
51. ~, 45n are each stations? It corresponds to aLl, -, Ln.

Next, the l@s button 4 with display on each telephone related to the central office line l.
51. . . , 45n and operations caused by pressing the buttons will be explained.

First, when an incoming call is received on the central office line 1, for example LX, the incoming call is detected by the central office line interface tflS21, and the incoming signal is further received by the data receiving circuit 241. The received result is notified to the display data generation circuit 242, which generates display data representing the incoming call. The display data is transmitted to the telephone interface section 23 and the control signal line 3.
b to the control circuit 44 of each button telephone.

As a result, each button telephone display circuit 43 displays the central office line L1.
As shown in FIG. 3, the characters 1 yakushi/'' are displayed on the LCD of the station line button with display 451 corresponding to the button 451.

The telephone (for example, telephone 43) is called by the incoming call,
When a subscriber presses the central office line button 451 with display, the button monitoring circuit 41 detects the press, and the control circuit 44
sends the office line usage data to the telephone interface section 23 via line 3b. This data is further sent from the telephone interface to control circuitry 24. When this office line usage data is received by the data receiving circuit 241,
The display data generation circuit generates display data indicating that the central office line Ls is in use and that the telephone set 43 is connected to the central office line. Further, the communication path switch section 22 forms a communication path between the office line L1 and the telephone set 43. The generated display data is sent via the telephone interface 23 to the control circuit 44 of each button telephone. As a result, the LCD of the line button 451 with display of each button telephone displays ``1 shot'' and ``3 incident'' as shown in FIG. be. Therefore, by looking at this display, the subscriber can easily determine that the key telephone 43 is using the central office line Ll. - Station line L! When the user presses the hold button on the telephone, the hold data is received by the data receiving circuit 241 of the device including the control circuit 44, and the display data generating circuit 242 generates hold display data. This hold display data is data representing the telephone that outputs the hold data and the central office line to be put on hold. This data, like the line-in-use data described above, is sent to the control circuit 44 of each telephone, and is displayed on the LCD of the line button with indicator corresponding to the station line to be held.
As shown in FIG. 5, the caller's phone number and the number of the key telephone that placed the call on hold are displayed.

In the above explanation, the status display of the station line L1 was shown, but
Each line button with display 452. ~, 45m are also displayed in the same way, so that the station line L2. ~． The state of Ln is also known. In this embodiment, letters or numbers are displayed on the button, so it is easy to distinguish.Furthermore, if the button is on hold or a central office line is in use, the number of the button telephone to be connected is also displayed, so the displayed button telephone If you want to make an extension call, wait until the display disappears before making the call, and the connection will be reliably established unless the telephone is in the middle of an extension call.

The display functions of the station line buttons corresponding to the station lines LX, .
It is also possible to attach a letter and numeric display to the extension button corresponding to 25m and display it as shown in FIGS. 3 to 5. In addition, when a doorbell is connected to the iIcm and the telephone has a button to call the doorphone, an LCD 2 is attached to the button and the usage status of the doorphone can be displayed in letters and numbers by data exchange as in the above-mentioned embodiment.

As described above, the present invention has the advantage of being able to read the line status in detail by displaying the line status using letters and numbers.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a block diagram of a button telephone used in Fig. 1, and Figs. 3, 4, and 85 are displays of central office line buttons with indicators, respectively. It is a perspective view showing a state. l...Station line, 2...Main device, 3a...
. . . Call line, 3b . . . Control signal line, 41. ~+4m...,...button telephone. 2nd 45° 5th @

Claims (1)

[Claims] In a button telephone device that includes a plurality of button telephones and a main device that accommodates a central office line and connects and controls the plurality of button telephones and the central office line or connects and controls the button telephones, a central office provided in the button telephone It includes a central office line button that captures a telephone line or an extension button that captures an extension line, and a display device that can display letters and numbers corresponding to these central telephone line buttons or extension buttons, and displays characters and numbers to indicate the state of the central office line or extension line on the display. A button telephone characterized by displaying numbers.