JP2608313B2 - Telephone equipment system - Google Patents

Description

The present invention relates to a main unit connected to a telephone line, a dedicated telephone unit connected to the main unit, and a facsimile connected to the dedicated telephone unit. And a telephone device system including the telephone unit.

[Prior Art] Conventionally, there has been no dedicated telephone for a key telephone system which also functions as a facsimile adapter, which is a telephone apparatus system of this kind.

[Problems to be Solved by the Invention] This is because, for example, when a dedicated telephone of a key telephone system is used as a facsimile adapter, the dedicated telephone only needs to be near the facsimile apparatus, but is installed near the facsimile apparatus. In such a case, even if the telephone line from the main unit is connected to a facsimile and facsimile communication is performed, this cannot be known.

For this reason, even if the handset is off-hook, no sound can be heard from the handset, which may cause the operator to misunderstand that it is malfunctioning or to take measures.

[Means for Solving the Problems] The present invention has been made for the purpose of solving the above problems, and has the following configuration as one means for solving the above problems.

That is, a telephone device system comprising a main unit connected to a telephone line, a dedicated telephone unit connected to the main unit, and a facsimile unit connected to the dedicated telephone unit. In the on-hook state, the unit does not change its state when it sends a call signal to the facsimile unit and when it receives an incoming signal from the main unit which is output in response to a call from the telephone line. A second state, a third state which transits to the first state in which a facsimile unit and a calling signal are transmitted in response to reception of the incoming signal, and a communication path with the main unit in the off-hook state. A fourth state of functioning as a normal telephone, detecting the formation of a DC loop in the facsimile unit, connecting the main unit to the facsimile unit, and the facsimile unit capturing the telephone line. In a fifth state, when the main unit notifies the main unit of off-hook, the off-hook notification state is maintained even if the own telephone unit is on-hook, and when the facsimile unit forms a DC loop, the state transits to the fifth state. And a display means for displaying the current state of the dedicated telephone unit.

[Operation] In the above configuration, the state of the dedicated telephone functioning as a facsimile adapter at present can be seen at a glance, and the operator does not excessively recognize the failure state and does not confuse it. Can operate the telephone.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a system configuration diagram of a key telephone system according to an embodiment of the present invention.

In the figure, 1 is a telephone line, 2 is a key telephone main unit, 3 is a two-line communication line between the main unit 2 and the dedicated telephone 5, and 4 is a control line between the main unit 2 and the dedicated telephone 5. It is composed of two lines. 5 is a dedicated telephone with a facsimile adapter function, 6 is a dedicated telephone 5 and a line terminal 8 of a facsimile 7
7 is a facsimile, 10 is a connection line between the facsimile 7 and the facsimile attached telephone 11, and 11 is connected via a telephone terminal 9 of the facsimile 7 and an attached telephone connection line 10. Facsimile attached phone.

FIG. 2 is a block diagram showing the detailed configuration of the dedicated telephone 5 with the facsimile adapter function in the above configuration.

In FIG. 2, 12 is a hook switch for detecting the on / off hook of the handset 16, 13 is an amplifier controlled by a control circuit 21, 14 is a speaker, 15 is a speech circuit, 16 is a handset, 17a and 17b. Is a relay which is turned on / off synchronously with each other under the control of the control circuit 21, 18 is a DC power supply circuit for supplying DC power to the facsimile 7, and 19 is a call signal to the facsimile 7 via the communication line 6. An IR transmission circuit 20 is a DC loop detection circuit for detecting whether or not a DC loop is formed in the communication line 6 by the facsimile 7, and 21 is, for example, FIGS. 4-1 to 4 described later stored in the ROM 21a. -6 A control circuit for controlling the whole of the dedicated telephone according to the embodiment according to the program shown in FIG. 6, a main unit interface 22 for interfacing control signals with the main unit 21, and a display 23 comprising an LCD or an LED. , And the display the current state of the dedicated phone 5. Reference numeral 24 denotes a keyboard including a telephone number key (dial key), a one-touch dial key, and a function key. Pressing of each key is recognized by the control circuit 21, and the key pressing information is transmitted to the main unit interface 22 through the main device interface 22. It is sent to the device 2. The keyboard 24 has a key (speaker key) for inputting an instruction to start / cancel the speaker reception, and sets the dedicated telephone to the facsimile automatic reception mode in the on-hook state or cancels the facsimile automatic reception mode. A key (fax key) for inputting an instruction is included.

The communication line 3 connected to the main device 2 is connected to either the switch 12 or the DC loop detection circuit 20 by two relays (17a, 17b).

When the dedicated telephone 5 is used as a normal telephone,
The relay 17a switches the communication circuit 3 to the switch 12 side. For this reason, in the on-hook state where the handset 16 is placed (the state in which the hook switch 12 shown in FIG. 2 is open), the communication line 3 is connected to the speaker 14 via the amplifier 13.
It is connected to the. In the off-hook state in which the handset is picked up (the hook switch 12 shown in FIG. 2 is closed), the communication line 3 is connected to the handset 16 via the communication circuit 15.
Is connected, and a call is possible. The opening / closing information of the hook switch 12 can be detected by the control circuit 21.

On the other hand, when the dedicated telephone 5 is used as a normal telephone, the relay 17b is switched to the IR transmission circuit 19 side, and the DC power supply circuit 18 is connected to the communication line 6 to the facsimile 7 via the circuit 19, Power is supplied to the facsimile 7.

The control line 4 from the main device 2 is connected to a main device interface 22, and information from the main device 2 is transmitted to the control circuit 21 via the interface 22.

Here, when the dedicated telephone 5 is in the automatic facsimile reception mode (third state), if there is a call from the telephone line 1 connected to the main unit 2, the main unit 2 transmits the call via the control line 4. Incoming command is sent. Dedicated telephone 5
When the incoming command is received via the main device interface 22, the control circuit 21 activates the IR sending circuit 19 and sends a calling signal to the communication line 6 to the facsimile 7. The control circuit 21 monitors the DC loop detection circuit 20 to form a DC loop in the communication line 6 in response to a call request by the off-hook of the facsimile 7 or the facsimile-attached telephone 11 receiving the call signal.
When the facsimile 7 detects that a DC loop has been formed in the communication line 6, it transmits an off-hook code to the main unit 2 via the control line 4, and simultaneously switches the two relays (17a, 17b). Telephone line 3 and facsimile 7
And a facsimile 7 is connected to the main unit 2. At this time, the main unit 2 receives the off-hook code, regards it as a response, forms a communication path between the called telephone line 1 and the communication line 3, and performs facsimile communication.

Next, FIG. 3 shows a detailed block diagram of the facsimile 7 of this embodiment.

In FIG. 3, reference numeral 25 denotes an IR detection circuit for detecting a call signal from a telephone line.
When the automatic reception mode is set by the control circuit 30, when the control circuit 31 detects a call signal, the control circuit 31 forms a DC loop in the communication line 6 by the DC loop forming circuit 26, and connects the relay 28a to the modem 2
Switch to the 9 side and perform facsimile communication thereafter. 26 is a DC loop forming circuit for generating a DC loop in the communication line 6,
Reference numeral 27 denotes a dialing circuit for outputting a call destination telephone number signal (dial pulse signal or DTMF signal) to the communication line 6;
28b is a relay controlled by the control circuit 31, and 29 is a telephone line 6.
A modem (modem) which demodulates the received modulated signal and outputs it to the control circuit 31 and modulates the transmission information from the control circuit 31 and sends it out to the communication line 6; 30 is a start key, stop key, numeric key This is a keyboard composed of a touch dial key, a function key and the like. Reference numeral 31 denotes a control circuit that controls the entire facsimile of this embodiment according to a program stored in a built-in ROM 31a, 32 denotes a DC power supply circuit that supplies power to the attached telephone 11, and the relay 28a is switched to the modem 29 side. In this case, a DC current for detecting the DC loop generation of the attached telephone connection line 10 is supplied. 33 is a figure reading unit for reading a transmission original, etc.
34 is a graphic output unit for printing out received information and the like, 35 is a DC loop detection circuit for detecting the DC loop generation of the attached telephone 11, 36 is a sound source for generating various notification sounds, and 37 is a speaker.

In the normal state, the two relays (28a, 28b) are controlled to the state shown in FIG. 3, and the communication circuit 6 is connected to the telephone terminal 9 via the line terminal 8 and the two relays (28a, 28b). This is because the telephone terminal 9 has a facsimile attached telephone 11
Is connected. Therefore, by off-hook the facsimile attached telephone 11, a DC loop is formed in the attached telephone connection line 10, and it is possible to talk through the communication line 6.

The control operation mainly in the dedicated telephone 5 of the present embodiment having the above configuration will be described below with reference to FIGS. 4-1 to 4-6.

First, in a case where the power of the apparatus is turned on and the apparatus is started, the processing of FIG. 4-1 is executed. Step S1
Is executed by resetting of the control circuit 21 to initialize the dedicated telephone. At this time, each relay 17a, 17b
The state shown in FIG. That is, the relay 17a is switched to the switch 12 and the relay 17b is switched to the DC power supply circuit 18.

Subsequently, in step S2, the display on the LCD of the display unit 23 is turned off, and in the next step S3, the LED of the display unit 23 is turned off. Then, in step S4, the processing flag is set to the cleared state "0". This processing flag is for distinguishing between “state 1” and “state 3” of the telephone 5 for exclusive use of the embodiment described later. In the case of “state 1”, the value of the processing flag is set to “0”. In the case of “state 3”, the value of the processing flag is set to “1”
And

Next, in the loop of steps S5 and S6, the press input of the fax key of the keyboard 24 and the off-hook of the handset 16 are monitored. When the fax key is depressed, the state shifts to "STATE 3" shown in FIG. 4-3 from step S5. "State 3" is a facsimile automatic reception mode (when the incoming command from the main unit 2 is received, the facsimile 7
(Transition mode to “STATE 2” in which a call signal is transmitted to the STA).

When the off-hook is detected, the process proceeds from step S6 to step S7, in which an off-hook code for notifying the off-hook of the dedicated telephone 5 is sent to the main unit 2, and the communication state shown in FIG. ].

Subsequently, the facsimile automatic reception mode 4-3
The control of “state 3” shown in the figure will be described.

"State 3" is basically the same as "State 1" described above, except that the display on the LCD of the display unit 23 is cleared at step S16 as at step S2, and a display indicating that the automatic reception mode is set at step S17. The LED of the unit 23 is turned on. Then, in the next step S18, the processing flag is set to "1". In steps S19 to S21, the reception of the incoming call command from the main unit 2, the pressing input of the facsimile key of the keyboard 24, and the off-hook of the handset 16 are monitored.

Here, when the fax key is depressed, it is determined that the facsimile automatic reception mode has been released, and a transition is made from step S20 to "state 1" following step S2. When an incoming call command is received, the state transits to "state 2" shown in FIG. 4-2 in which a call signal is sent to the facsimile 7.

On the other hand, when the off-hook is detected, the process proceeds from step S21 to step S22, in which the off-hook code is sent to the main unit 2 as in step S17, and the state transits to "STATE 4" shown in FIG. 4-4.

In the state of steps S19 to S21, the main unit 2
When there is a call on the telephone line 1, the main device 2 transmits an incoming call command via the control line 4. For this reason, when an incoming command is received via the main unit interface 22 in the facsimile automatic reception mode of "STATE 3", a call signal shown in FIG. 4-2 is transmitted from step S19 in "STATE 2". ].

In the process of "STATE 2", "FAX call" is first displayed on the LCD of the display unit 23 in step S8, and the LED of the display unit 23 is blinked in step S9 to indicate that it is in "STATE 2". In the next step S10, the IR transmission circuit 19 is activated to transmit a calling signal to the communication line 6 to the facsimile 7.

When a call signal is transmitted to the communication circuit 6, the IR detection circuit 25 of the facsimile 7 detects the call signal. Thus, the facsimile machine 7 forms a DC loop in the communication line 6 by the DC loop forming circuit 26 to capture the line, and the relay 28a
Is switched to the modem 29 side, and the process shifts to a process of starting facsimile 7 communication.

Therefore, in the following steps S11 and S12, whether the DC loop detection circuit 20 detects the generation of a DC loop to the communication line 6 from the facsimile 7, or whether the main unit 2 sends an incoming termination command via the control line 4. To monitor.

When the formation of the DC loop is detected, the process proceeds from step S11 to step S14, in which the IR sending circuit 19 is deactivated to stop sending the calling signal, and in the following step S15, the main unit 2 is connected to the main unit 2 via the main unit interface 22 and the control line 4. Then, an off-hook code is transmitted, and the state transits to "STATE 5" shown in FIG. 4-5.

Further, when the incoming call from the connection telephone line 1 stops, the main device 2 transmits a call termination command to the dedicated telephone 5. For this reason, when receiving the incoming call stop command via the control line 4 and the main device interface 22, the process proceeds from step S12 to step S13, in which the IR sending circuit 19 is deactivated to stop sending the calling signal, and the fourth to third steps are performed. The state transits to “state 3” in the figure.

Next, "State 4" showing the state of a call through the handset 16 of the dedicated telephone shown in FIG. 4-4 will be described.

In "STATE 4", the display on the LCD of the display unit 23 is turned off in step S23, and the LED of the display unit 23 is turned off in step S24. Then, it is monitored whether the fax key is depressed in steps S25 and S26, or whether the telephone is turned on when the call is terminated or the like.

When the fax key is depressed in the "off state" of the "state 4", the state transits from the step S25 to the "state 6" shown in FIG. 4-6.

Further, in this state, when the on-hook is detected, the process proceeds from the step S26 to the step S27, and sends the on-hook code to the main unit 2 via the main unit interface 2 and the control line 4. Then, the value of the processing flag is checked in the following step S28, and if "0", the state transits to "state 1".
If it is not “0”, the state transits to “State 3”.

"State 5" shown in FIG. 4-5 is a state in which the facsimile 7 has captured the line and is performing facsimile 7 communication.

In "State 5", "FAX connection" is displayed on the LCD of the display unit 23 in step S29, and the LED of the display unit 23 is displayed in step S30.
Flashes. Then, in step S31, the relays 18a and 18b are switched to connect the communication line 3 from the main unit 2 to the facsimile machine 7.
In step S32, the DC loop detection circuit 20 monitors whether the facsimile communication or facsimile communication is completed and the DC loop formed in the communication circuit 6 is released.

In the facsimile 7, for example, when the facsimile communication is completed, the relay 28a is returned to the non-modem side as shown in FIG. 3, and the DC loop of the DC loop forming circuit 26 is disconnected. The disconnection of the DC loop is performed by the DC loop detection circuit 20.
When the detection is made in step S32, the process proceeds from step S32 to step S33, where the on-hook code is sent to the main unit 2, and the subsequent step S34
Return the relays 18a and 18b to the initial state, check the value of the processing flag in step S35, and if "0", transit to "state 1".
If it is not “0”, the state transits to “State 3”.

Finally, with reference to FIG. 4-6, "state 6" in which the fax key is pressed in the off-hook state of the dedicated telephone will be described.

In the "state 6", the LCD of the display unit 23 is set in step S36.
Is displayed on the display 23, and in step S37, the LE
Make D blink. Then, in a succeeding step S38, the control waits until the DC loop detection circuit 20 detects the DC loop generation.

In this state, for example, the operator goes to the facsimile 7 and, if necessary,
Is turned off (at this time, a DC loop is formed in the communication line 6), and the start key of the facsimile 7 is pressed.
The facsimile 7 responds to the pressing of the start key,
The DC loop forming circuit 26 is activated to form a DC loop on the communication line 6. Then, the relay 28a is switched to the modem side to start facsimile communication.

Therefore, during the period from when the facsimile-attached telephone 11 is turned off until the facsimile communication ends, the telephone line 6
A DC loop is formed above.

Therefore, the dedicated telephone 5 detects a DC loop in step S38 and makes a transition to "STATE 5" shown in FIG. 4-5.
Therefore, during facsimile communication, step S3 of "State 5" is performed.
The loop of 2 will be repeated.

The above description assumes that the off-hook state is
The above control is performed only for the off-hook state. However, the same control can be performed by setting the speaker receiving state or the hands-free talking state to the off-hook state.

Also, the case where these controls are performed by the control circuit 21 of the dedicated telephone 5 has been described as an example, but the same control is performed by the control circuit of the main unit 2, and the dedicated telephone 5 is controlled by a command from the main unit 2. It is also possible to consider a key telephone system adapted to be used.

As described above, according to the present embodiment, means for connecting to the facsimile 7 is provided, and the dedicated telephone 5 in the so-called key telephone system functioning as a facsimile adapter receives an incoming command from the main unit 2 in the on-hook state. A first state in which the state does not change even if the state changes, a second state in which a calling signal is transmitted to the facsimile machine 7, and a third state in which a transition is made to the second state when an incoming command is received from the main unit 2 in the on-hook state. In the off-hook state, the telephone line 3 from the main unit 2 is connected to the dedicated telephone 5
Functioning as a normal telephone connected to the communication circuit 15 of the fourth
And the communication line 3 from the main unit 2 is connected to the facsimile 7
The handset 16 is turned off in the fifth state in which the facsimile 7 forms a DC loop in the line and captures the line, and when the main unit 2 is notified of the off-hook state. Even if the on-hook code is not sent to the main unit 2, the formation of the DC loop to the communication line 6 with the facsimile 7 is monitored, and when the facsimile 7 forms the DC loop, the state shifts to the fifth state. There are six states, the above six states are divided into several groups, and means for displaying which group is currently in the display unit 23 of the dedicated telephone 5 is provided. This is an excellent effect that it is possible to provide a dedicated telephone that can be used as a facsimile adapter, making it easy for the operator to make a mistake, and to undoubtedly function as a facsimile adapter.

[Effects of the Invention] As described above, according to the present invention, the state of a dedicated telephone functioning as a facsimile adapter can be clearly understood at present, and the operator does not need to recognize that the telephone is in a failure state. Also, the dedicated telephone can be operated without any doubt.

[Brief description of the drawings]

1 is a system diagram of a key telephone system according to one embodiment of the present invention, FIG. 2 is a detailed block diagram of a dedicated telephone shown in FIG. 1, FIG. 3 is a detailed block diagram of a facsimile shown in FIG. FIGS. 4-1 to 4-6 are control flow charts of the telephone for this embodiment. In the figure, 1 ... phone line, 2 ... key telephone main unit, 3,
6: Call line, 4: Control line, 5: Dedicated telephone, 7
... facsimile, 8 ... line terminal, 9 ... telephone terminal,
11 Phone with facsimile, 12 Phone switch, 13 Amplifier, 14, 37 Speaker, 15 Phone line, 16 Handset, 17, 28 Relay, 18, 32 DC power supply Circuit, 19 ... IR sending circuit, 20,35 ... DC loop detecting circuit, 21,31 ... Control circuit, 22 ... Main device interface, 23 ... Display unit, 24,30 ... Keyboard, 25 ... … IR
Detection circuit, 26 DC loop formation circuit, 29 Modem,
31 ... Control circuit.

Claims (2)

(57) [Claims] 1. A telephone device system comprising a main unit connected to a telephone line, a dedicated telephone unit connected to the main unit, and a facsimile unit connected to the dedicated telephone unit. In the on-hook state, the dedicated telephone unit receives a first state in which a call signal is sent to a facsimile unit and an incoming signal from the main unit output in response to a call from a telephone line. A second state in which the state does not change; a third state in which a transition is made to the first state in which a call signal is transmitted to a facsimile unit in response to reception of the incoming signal; and a telephone call with the main unit in an off-hook state. A fourth state of forming a path and functioning as a normal telephone, and detecting the formation of a DC loop of the facsimile unit, connecting the main unit and the facsimile unit, and connecting the facsimile unit to a telephone line. A fifth state in which the main unit is notified of the off-hook, and a state in which the off-hook notification state is maintained even if the own telephone unit is on-hook while the facsimile unit forms a DC loop. And a display means for displaying the current state of the dedicated telephone unit. 2. The telephone system according to claim 1, wherein said display means divides said six states into predetermined groups and displays which group is currently in said group.