JPH0197096A - Direct in dial system in key telephone system - Google Patents

Abstract

PURPOSE:To detach a direct in dial(DID) controller from a key telephone system with extreme facility and to optionally add or detach a DID function by usually connecting the DID controller with the connection port of a main equipment and handling the DID controller in the same way as a normal slave unit. CONSTITUTION:When incoming arrives in the installed specified line wire, the main equipment 1 transmits incoming display codes with respect to the specified line with only to the DID controller 5. When the DID controller 5 detects the own use display codes, it transmits a guide message from a sound generator 51 to a line 3m as audible display signals for response. A DTMF receiver 52 receives the number of prescribed digits, which displays an extension slave unit designation dial from a caller, and it transmits line wire transfer processing command codes to the main equipment 1. The main equipment 1 receives the codes, transmits the transfer command of the specified line wire to the designated slave unit, causes the specified line wire to set line wire incoming regulation to all the key telephone sets 4 except for the DID controller 5.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a direct in dial (hereinafter referred to as DID) in a button telephone device.
This is related to the improvement of the system.

[Conventional technology]

All the DID functions in conventional key telephone devices are built into the system, and perform the following operations, for example.

That is, when an outside caller dials the central office line number, the system's built-in DID function activates and automatically answers the central office line. If the called party's extension is subsequently dialed, the central office line is connected to the called party's key telephone designated by that extension, completing the call path and leaving the outside caller without any intermediate intervention. The caller will directly communicate with the called party.

[Problem that the invention seeks to solve]

However, the DID@ function in the above system must be added from the beginning of the system installation, so if you want to introduce the DID function later, you will have to add the DID function to the entire system. There was a problem that it had to be reinstalled.

[Means for solving problems]

The present invention has been made in view of the above-mentioned problems, and includes a DID control device connected to the button telephone connection port of the main device, and an incoming call response, data and response audible response based on outside line incoming display data transmitted from the main device. In addition to sending the display signal back to the main device side, it also transmits outside line transfer information to the designated extension button telephone based on the individual incoming call designation dial to the main device, and also transmits all calls other than the DID control device to the specified outside line. This allows the extension button telephone to be set to restrict incoming outside calls.

[For production] The DID control device can be easily attached to and detached from the button telephone device.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

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

In the same figure, 1 indicates the main device, and this main device 1 includes:
External line 2 (2,
~2. ．． ) is connected, and the connector CN (C
A button telephone (handset) 4 (4, to 4.-1) and a DID control device 5 are connected via lines 3 (3I to 3ffi) each consisting of a pair of communication lines and a signal line (N, ~CN,) and a pair of communication lines and signal lines. The outside line is 21-2. , are each connected to the communication path switch 12 via the outside line interface 11 (111-11.,). On the other hand, the communication path switch 12 and the lines 3I to 31 from each handset 41 to 41-1 and the DID control device 5 are connected via the telephone interface 13 (131 to 131I), and the analog Exchange connections are made by crosspoints of switches or relay contacts. In addition, outside line interface 111-11fi
The call path switch 1 has functions such as incoming call detection, forming a DC loop for outside lines, holding calls, and dialing calls using pulse signals or composite voice frequency (hereinafter referred to as MF) signals.
2 is connected between the outside lines 2I to 2n and the handset 41''41!1-1 and the DID control device 5, and further between the handset 4. 〜4゜−
1 and the DID control device 5. Also, telephone interface 13. ~131I is
Handset 4. ~4□1 and the DID control device 5 are supplied with power for communication via a communication line, and also transmit/receive data signals and supply power for control via a signal line.

These controls are provided by a processor unit 14, such as a well-known microprocessor, and a fixed memory (ROM) 15.
In a control unit consisting of a variable memory (RAM) 16 and a variable memory (RAM) 16, the processor unit 14 executes a program in the fixed memory 15 while accessing predetermined data to the variable memory 16, as will be described later.

On the other hand, in each handset 41 to 4□1, the communication line 4
A communication circuit 42 is connected to the signal line 41A, and a processor unit 44, which is similar to the control circuit of the main device 1 but smaller in scale, is connected to the signal line 41B via a transmission circuit 43.
A control section consisting of a fixed memory 45A and a variable memory 45B is connected to the main device 1 via a transmission circuit 43.
In response to the control signal sent from the controller, in response to the emitting of an incoming ring tone, the operation of each button on the keyboard 46, and the operation of the hook switch H3, the past data indicating these conditions is sent to the main unit via the transmission circuit 43. Send to device 1. Further, various information is displayed on the display 47.

Note that the transmission circuit 43 has a power supply separation function, and the signal line 4
Extract the power supplied from the main device 1 side via 1B,
After stabilizing this power, it is supplied as local power to each part that requires it.

In addition, in the DID control device 5, the audio generator 51. is connected to the line 3. A transmission circuit 53 similar to the DTMF receiver 52 and the handset 4 is connected, and the handset 4 is connected to the DTMF receiver 52.
Similarly, the control circuit is similar to that of the main device 1, but the processor unit 54 and fixed memory 55A are smaller in scale.
, a control section consisting of a variable memory 55B is connected.

The audio generator 51 is for recording and reproducing audio and generating tones, and the DTMF receiver 52 is for receiving the PB multiplied signal from the main device 1.

Here, the connection parts between the main device 1, the slave devices 41 to 4E, and the DID control device 5 are all configured in the same manner as shown in FIG. 2.

In the figure, the telephone interface 13 includes a transformer 13A connected to the communication path switch 12, a transmitting/receiving circuit 13B connected to the processor unit 14, a transformer 13C1 connected to the output of the transmitting/receiving circuit 13B, and these transformers 13A, The power supply circuit 13D is connected to the neutral point of the secondary side of the power supply circuit 13C.

The secondary output of each transformer 13A, 13C is connected to the slave unit 4I through connector CN (modular connector, etc.).
4. -1 and DID control device 5 are all similarly connected.

This button telephone device has an outside line incoming call restriction function that displays incoming calls to a specified outside line on a button phone that does not have the incoming call restriction setting, and a function that allows calls to be transferred to any key phone that responds to an incoming outside line call. It is also equipped with an external line transfer function for transferring external lines.

In such a configuration, when setting system data, D
For a desired outside line to have an ID function, the system is set in advance to display an incoming call for this outside line. - When an incoming call arrives on the set specific outside line, the main device 1 transmits an incoming call display code for this specific outside line only to the DID control device 5. The DID control device 5 detects this incoming call display code via the transmission circuit 53 and transmits a specific outside line response command to the main device 1. Upon receiving this, the main device 1 captures the specific outside line, closes the communication path, and transmits the self-use display code to the DID control device 5. When the DID controller 5 detects this self-use display code, it sends a dial tone or a prerecorded guidance message from the voice generator 51 to the line 3. DTMF code is sent as a response audible display signal to prepare for reception of the DTMF code. After the DTMF receiver 52 receives a number with a predetermined number of digits representing the extension designated dial from the calling party, the external line transfer process of the call processing software already installed in the main device 1 is performed based on this number. An external line transfer processing command code is transmitted to the main device 1 to execute the process.

Upon receiving this code, the main device 1 transmits a transfer command for the specific outside line to the designated slave unit, and also puts this specific outside line on hold. At the same time, all key telephones 4 other than the DID control device 5 are set to restrict incoming calls to specific outside lines. The DID control device 5 can determine whether the designated handset has responded to the specific outside line by detecting the display code of the specific outside line.

In addition, if the specified handset remains unresponsive for a predetermined period of time,
The DID control device 5 sends a command to reacquire the specified external line to the main device 1, and after reacquiring the specified external line, sends a hold code to put the specified external line on hold again, and furthermore, sends the specified external line to the main device 1. A command to generate a hold alarm sound (an external call ringtone may also be used) is sent to the main device l. Therefore, if the designated slave unit does not respond, one of the slave units will respond.

Next, the operation of this embodiment will be explained in further detail with reference to a flowchart.

FIG. 3 is a flowchart showing the main processing program by the processor unit 14 of the main unit W1.

In the figure, when the power is turned on and the reset is released, the processor unit 14 checks whether the RAM 16 is backed up (step 101).
If it has not been backed up, the operational data memory ma
In step 102), a predetermined default value stored in the ROM 15 is set for each item, and the exact same default value is also set in the temporary registration memory mb.
, the speed dial memory provided using the same < predetermined area of the RAM 16 is cleared (step 103). If it has been backed up in step 101, all data in the operational data memory ma is transferred to the temporary registration memory mb (step 116). Next, other memories are also cleared (step 104), each part is brought into a state according to the operational data set in the operational data memory ma (step 105), and a timer for timer interrupt is set (step 106). From then on, each time the timer time arrives,
An interrupt processing program as shown in FIG. 4 is executed.

In FIG. 4, the processor unit 14 performs incoming ringing timing processing (step 201). for example,
When an oscillator for generating an incoming ring tone is built into the main device 1, its output is sent to the corresponding handset as an intermittent tone. This step is a processing step for determining the timing of the interruption. In addition, when an oscillator is provided on the handset side, a control signal is sent to cause an incoming ring tone to be emitted at a desired timing via the processor unit 44, 55 of the handset.

Next, the processor unit 14 checks the presence or absence of input data from each child device, and if there is input data, sets a flag indicating this, and stores the input data in the huffing memory. In addition, although omitted in FIG. 1, the main device 1 of this embodiment has a function to connect a DSS in addition to a slave unit, and the same processing will be applied to future human power data and human power data from an outside line. (Steps 202-2
03). Furthermore, if it is necessary to output data for these, the data accumulated in the buffer is subjected to SMDR output processing and the data is output (step 204).
~206).

Therefore, in the main process of FIG. 3, when a flag indicating data input from the slave unit or DSS is sent (step 107), data processing of the slave unit or DSS is performed according to the data (step 10). Similarly, if there is an input from an outside line (step 109
), an outside line call reception or call cancellation process is performed (step 110).

Further, FIG. 5 is a flowchart showing the main processing program of the DID control device 5.

In the figure, when the power is turned on and the reset is released, the processor unit 54 initializes (step 301) and waits for an outside line incoming display code to be transmitted from the main device 1 (step 302). When the outside line incoming call display code is received, a capture command code for this specific outside line is sent to the main unit W1 (step 303).

Next, start a timer (Step 304), and wait for the self-use display code for the specific outside line to be sent from the main device 1 within a certain period of time determined by this timer (Step 3).
05). If the code is not sent within a certain period of time, the process returns to step 302 (step 306), and if the code is sent, a dial tone or guidance message is sent to the line 36 (step 307).

Next, the timer is started again (step 308), and the main device 1 waits for the number of the handset designation dial to be sent within a certain period of time determined by the timer (step 309). If the code is not sent within a certain period of time (step 310
), Sends a hold code command for this specific outside line to the main device 1 (Step 311), Sends a command to the main device 1 to generate a hold alarm sound for all slave units (Step 312),
Return to step 302. When the code is sent within a certain period of time, this specific outside line transfer code command is sent to the main device 1 (step 3-13), and the timer is started again (step 314).

The timer waits for a transfer destination response from the main device 1 to be returned within a certain period of time (step 315), and if no response is received within a certain period of time (step 316), the main device 1 acquires a specific external line. Step 317: Send command code
), the processing from step 311 onwards is performed. If a response is returned within a certain period of time, it is assumed that the DID function has worked effectively and the process returns to the first step 302.

FIG. 6 is a flowchart showing the timer interrupt processing of the DID control device 5. Although this timer interrupt is not shown in the flowchart of FIG. 5, it is an interrupt process that communicates with the main device 1 at regular intervals during main processing.

In the figure, when a timer interrupt occurs, various timer calculation processes are performed (step 401), and data transmission processing with the main device 1 is executed (step 402). Then, audio reproduction processing (step 403) and DTMF number reception processing (step 404) are performed.

As described above, in this embodiment, the DID control device 5 is connected to the connection port of the main device l to which the button telephone 4, which is a handset, is normally connected, and the DID control device 5 is treated like a normal handset. By doing so, it has become possible to attach and detach the DID control device 5 to and from the button telephone device extremely easily, and it has become possible to add or remove the DID function as desired.

It should be noted that the above-mentioned embodiment produces similar effects even when applied to a digital key telephone device.

〔Effect of the invention〕

As explained above, the present invention connects a DID control device to the button telephone connection port of the main device, and transmits incoming call response data and an audible response display signal to the main device based on the outside line incoming display data transmitted from the main device. Along with sending it back to
Transmits external line transfer information to the designated extension button telephone based on the individual incoming call designation dial to the main device, and sets external call incoming restriction for the specified external line on all extension button telephones other than the DIDIII control device. As a result, the DID control device can be easily attached to and detached from the button telephone device, and there is no longer a need to fix or add the DID function from the beginning of system installation as in the past, and the DID function can be used at any time. This has the effect that it is possible to add the DID function if one wants to introduce it, and the DID function can be removed at any time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG.
The figure is a circuit diagram of the connection between the main device and the slave device, FIG. 3 is a flowchart showing the main processing program of the main device, FIG. 4 is a flowchart showing the timer interrupt processing program of the main device, and FIG. 5 is a DID- FIG. 6 is a flowchart showing the main processing program of the control device. FIG. 6 is a flowchart showing the timer interrupt processing of the DID control device. 1...Main device, 2...Outside line, 3...Line, 4...
- Key telephone, 5... DID (direct in dial) control device, 51... voice generator, 52...
DTMF receiver, 53...Transmission circuit, 54...Processor unit, '55A...ROM, 55B...
RAM, 11...External line interface, 12...
Call path switch, 13...telephone interface,
14... Processor unit, 15... ROM51
6...RAM.

Claims (1)

[Claims] There is an outside line incoming call restriction function that displays incoming calls to a specified outside line on key phones that do not have incoming call restriction settings, and an outside line transfer function that transfers outside calls to any key phone by operating the forwarding operation of the button phone that responds to an incoming outside line call. In the key telephone device, a direct in-dial control device is connected to the key telephone connection port of the main device, and the direct in-dial control device generates incoming call response data and response data based on outside call incoming display data transmitted from the main device. The audible display signal is sent back to the main device side via the signal line and the call line, respectively, and the outside line transfer information to the designated extension key telephone based on the individual incoming call designation dial transmitted to the call line is sent to the signal line. In the button telephone device, the transmission is transmitted to the main device via the main device, and an outside call incoming restriction is set for all extension key telephones other than the direct in dial control device for a specific outside line. Direct in-dial method.