JPH08317080A - Telephone system - Google Patents

Abstract

PURPOSE: To use one line of a 2-line telephone set which is used exclusively for a facsimile equipment for dialing with priority when the facsimile equipment is not in use. CONSTITUTION: The system is made up of an accessory telephone set 11 using two lines A, B and connecting to the line A, a line selection circuit 23, a hook detection switch 33 in interlocking with a hook switch 32, an extension connector connecting to the line B, a facsimile equipment 12 connecting to the extension connector 3, a line current detection circuit 26 detecting the operating state of the facsimile equipment 12, and a control circuit 25 controlling the 2-line telephone set. The control circuit 25 monitors the operating state of the lines A, B, a handset 10 and the line current detection circuit 26 to discriminate the state and to control the line selection circuit 23 thereby deciding an available line. When the line B is not in use, the line B is set with priority as a speech line through which dialing is sent externally. The line A is made idle as an external speech reception line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone device composed of a plurality of lines, and more particularly to a structure in which a line assigned for FAX is used for communication.

[0002]

2. Description of the Related Art A conventional example will be described with reference to FIGS. FIG. 4 shows a conventional telephone having two lines (hereinafter, simply referred to as “two-line telephone”), and one line has a communication device other than a communication device (hereinafter, this is represented as a facsimile and simply referred to as “facsimile”). FAX ”) is connected.

Explaining the telephone shown in FIG. 4, a line A is connected to the connector 1, a line B is connected to the connector 2, and a FAX is connected to the line B.
Each line is terminal 5 of line select button 35
The line connected to the circuits 2 and 53 and selected by the switching operation of the line select button 35 is guided to the speech circuit 24 via the terminal 54 and the hook switch 32. The hook switch 32 is turned on and off in conjunction with the handset 10. Further, bells 141 and 142 for notifying an incoming call are provided on each line.

Bell 1 of line A having the above-mentioned line configuration
When 41 is sounded and there is an incoming call, the line select button 35 is operated to connect the terminals 52 and 54, and the handset 10 is picked up, the hook switch 32 is turned on, the transmission signal is guided to the speech circuit 24, and the handset 10 is received. You can make a call via. Also, if you try to make a call on line A, line select button 35
By operating to connect terminals 52 and 54, and handset 1
0 is picked up and the hook switch 32 is turned on to make a call.

On the other hand, if there is an incoming call on the line B, the bell 142 is used because this line is exclusively for FAX 12
FAX 12 operates after the sound of. In this case, if there is no call on line A, the handset 10 is ON,
That is, the hook switch 32 is OFF, and the FAX 12 operates normally even if the terminals 53 and 54 of the line select button 35 are closed. Further, if a call is being made on the line A, the terminal 53 of the line select button 35 is opened, and again the operation of the FAX 12 is not disturbed.

In the above line configuration, when the line B is not used, the terminal 53 and the terminal 54 of the line select button 35 are connected and the line B is used to make a call from the handset 10 to the outside. You can
Terminal 5 of the line select button 35 during reception by FAX 12.
Handset 1 with 3 and terminal 54 connected
If 0 is taken, there is a drawback that it interferes with reception of FAX 12.

Next, with reference to FIG. 5, a configuration for connecting the 1-line telephone and the FAX to independent lines will be described. As shown in the figure, this is to dedicate each of the two lines to the telephone 11 and the FAX 12, and in this case, the line assigned to the FAX 12 is used as a communication line even if the FAX 12 is not in use. It cannot be used.

[0008]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is, in a telephone having two lines, a first line dedicated to a call and a second line dedicated to another communication device represented by FAX. In such a case, the second line is generally used for a shorter time than the first line, and it has been desired that the two lines can be used efficiently and evenly. That is, when the FAX or the like is not used, the second line is automatically made available for outgoing calls.

[0009]

The present invention has been made in view of the above points, and has two connectors for connecting a first line and a second line, and a telephone provided on the second line. Other communication device expansion connector, bell detection circuit to detect incoming calls on each of the first line and the second line, handset, hook switch, hook detection switch, speech circuit, first line And a line selection circuit that selects the second line, a control circuit that determines the usage status of the first line and the second line and controls the line selection circuit, and a communication device connected to the extension connector is in use. A telephone is configured to include a line current detection circuit that detects whether or not it is present.

The communication device is not limited to a FAX, and may be a signal modulating / demodulating device (hereinafter simply referred to as "MODEM") or a cordless telephone.

A device for manually selecting a line is added to the line selection circuit.

The ringing tone is generated by the CPU constituting the control circuit instead of the bell circuit.

The line switching portion in the line selection circuit is composed of a relay or an analog switch.

The above problem is solved by using a transmission / reception circuit of a cordless telephone, FAX, or MODEM instead of the speech circuit.

[0015]

In a telephone composed of two lines, if the first line is dedicated to a call and the second line is dedicated to another communication device, the second line is automatically used when it is not used. Set the second line ready for outgoing calls.

[0016]

Embodiments of the present invention will be described with reference to FIGS.

First, FIG. 1 shows a two-line telephone device 100 according to the present invention, which is characterized by a connector 1 for connecting a first line (hereinafter, simply referred to as "line A").
And a connector 2 for connecting a second line (hereinafter, simply referred to as "line B"), and a communication device other than a communication device added to the line B (hereinafter, this will be referred to as a facsimile, simply referred to as "FAX"). 2) is connected, the telephone 1 is connected in parallel to the connector 1 as shown in FIG. 2, and the FAX 12 is connected to the additional connector 3.

Next, the configuration of the telephone device 100 will be described with reference to FIG. The line A is connected to the connector 1, and the bell circuit 211, the speaker 131, and the bell detection circuit 2 are connected.
21 is provided and is connected to the terminal 41 of the line selection circuit 23. A line B is connected to the connector 2, a bell circuit 212, a speaker 132, and a bell detection circuit 222 are provided, and a terminal 42 of the line selection circuit 23 is provided.
It is connected to the. The line selection circuit 23 has a terminal 41,
Switch 30 composed of 42 and 43, and the switch 30
A relay 31 for driving the
3 is ON HOOK and OFF HO of the handset 10.
It is connected to the terminal 44 of the hook switch 32 that opens and closes by OK, and the communication signal is guided to the speech circuit 24 via the terminal 45 of the hook switch 32.

Further, a hook detection switch 33 interlocking with the hook switch 32, a line current detection circuit 26 for detecting whether or not the FAX 12 of the line B is in use,
I / O, ROM for controlling the operation of the telephone device 100,
There is a control circuit 25 including a RAM and a CPU.

The hook detection switch 33 comprises a grounded terminal 46 and a terminal 47 which is kept at a high potential via a resistor R1, and turns the handset 10 OFF.
By K, the contacts 46 and 47 are closed and the terminal 47 becomes zero potential, and the control circuit 25 detects this potential and determines the state of the handset 10.

The line current detection circuit 26 comprises a coil 34 for generating a magnetic field by an operating current and a contact 51, one of which is grounded and the other of which is kept at a high potential via a resistor R2, and the FAX 12 is in use. If so, the contact 51 is closed by the magnetic field generated by the current flowing through the coil 34, and the contact 5
1 has a zero potential, and the control circuit 25 detects this potential and determines whether or not the FAX 12 is in use. still,
The hook detection switch 33 and the line current detection circuit 26 are not limited to the above-described structures, and may have the same functions.

In addition to the signals from the hook detection switch 33 and the line current detection circuit 26, the detection output of the bell detection circuits 221 and 222 is input to the control circuit 25, and the operation signal of the relay 31 is further output. ing.

Next, the operation of the telephone device 100 having the above configuration will be described. First, at the time of an incoming call, the bell signal coming in from the line A or the line B causes the respective bell circuits 211 and 212 to operate, and the bell sounds are generated from the speakers 131 and 132. The bell detection circuits 221 and 222 detect the bell signal and notify the CP of the control circuit 25 that there is an incoming call.
Notify U, CPU receives line A or line B
And the line closing by the handset 10 is permitted only when an incoming call from the line A is received. Therefore, when the handset 10 is turned off, the user can talk on the line A.

When the incoming call is on the line B, the FAX 12 connected to the extension connector 3 operates. The fact that the FAX 12 is operating is detected by the line current detection circuit 26, and is known to the control circuit 25. Therefore, in this case, the command from the control circuit 25 causes the terminal 4 of the line selection circuit 23 to operate.
1 and 43 are connected to each other, the speech circuit 24 is connected to the line A, and while the FAX 12 is operating, the handset 10 is turned OFFHOOK for the user to make a call, that is, even if the hook switch 32 is turned ON, the line A is automatically turned on. Therefore, the line B is not disturbed.

Next, during standby, the control circuit 25 indicates that "line B is not ringing" or "line current detection circuit 26".
Does not detect current, that is, the FAX 12 is not in use ", and the terminals 42 and 43 of the line selection circuit 23 are confirmed.
And the speech circuit 24 is connected to the line B.
Otherwise, the speech circuit 24 is connected to line A as described above. Therefore, when the FAX 12 is not in use, the call to the outside automatically uses the line B, and the line A can be left for the incoming call.
In addition, the telephone 11 connected to line A is connected to line B.
At the same time, you can make a call.

Further, the control flow in the above-mentioned control circuit 25 will be described with reference to the flowchart of FIG.

First, it is determined whether or not the line A is receiving a call (reference numeral 61). If YES, the line A is selected (reference numeral 65), and if NO, then it is determined whether or not the line B is receiving an incoming call (reference numeral 62). If YES, then the line A is selected (reference numeral 65), and if NO, then it is determined whether or not the line B is in use (reference numeral 63). After all Y
If ES, the line A is selected (reference numeral 65), and if NO, the line B is selected (reference numeral 64). At this point, when the line B is vacant, the line B is automatically set to be preferentially used for outgoing call.

Next, it is determined whether or not the handset 10 is an OFF hook (reference numeral 66), and if NO, the process returns to the start (reference numeral 61). If YES, it is in a state where a call can be made on the line B (reference numeral 68), and it is then determined whether or not the hook is an ON hook (reference numeral 70). ),Also,
If the answer is NO, it means that the call is still in progress and the process returns to the reference numeral 68.

When the line A is selected in the flow described above (reference numeral 65), it is determined whether or not the handset 10 is the OFF hook (reference numeral 67), and if NO, the process returns to the start (reference numeral). 61), if YES, line A
Then, it is judged whether or not it is an ON hook (reference numeral 71), and if YES, it means that the call is finished and the process returns to the start (reference numeral 61). On the other hand, if the answer is NO, it means that the call is still in progress and the process returns to the reference numeral 69.

According to the two-line telephone device 100 described above, for example, when a user who uses two lines does not use the fax frequently, when the line assigned for the fax is transmitted to the outside. Since it can be used as a priority line and other lines can be set aside for incoming calls, it is possible to reliably receive external calls.

The present invention can be applied not only to the two-line structure but also to the case where the number of lines is large. Further, a cordless telephone, a MODEM or the like may be used instead of the FAX.

[0032]

EFFECTS OF THE INVENTION In a telephone device composed of two lines, even if one line is assigned to a communication device other than a communication device represented by FAX, it is automatically used when the communication device is not used. Since it is ready to be used for telephone calls, the two lines can be used efficiently. Particularly in a small-scale office, the two lines can be effectively used, and the economical effect is large.

[Brief description of drawings]

FIG. 1 is a perspective view of a telephone device according to the present invention.

FIG. 2 is a configuration block diagram of a telephone device according to the present invention.

FIG. 3 is a flowchart showing a control flow of the telephone device according to the present invention.

FIG. 4 is an example of a configuration of a conventional two-line telephone.

FIG. 5 is a diagram showing a case where each of two telephone lines is dedicated to a telephone and a FAX.

[Explanation of symbols]

 1, 2 connector 3 expansion connector 10 handset 11 telephone 12 FAX 131, 132 speaker 141, 142 bell 211, 212 bell circuit 221, 222 bell detection circuit 23 line selection circuit 24 speech circuit 25 control circuit 26 line current detection circuit 30 switch 31 Relay 32 Hook switch 33 Hook detection switch 34 Coil 35 Line select button 41-47, 52-54 Terminal 51 contact

Claims (11)

[Claims] 1. A first connector for connecting a first line, a second connector for connecting a second line, and a third connector provided on the second line for connecting a communication device other than a telephone. Connector, a first bell detection circuit for detecting an incoming call of the first line, a second bell detection circuit for detecting an incoming call of the second line, a handset, a hook switch, and a hook detection switch A speech circuit; a line selection circuit for selecting the first line and the second line; and a control circuit for the line selection circuit by determining the use states of the first line and the second line. A telephone device comprising a control circuit and a line current detection circuit for detecting whether or not the communication device connected to the third connector is in use. 2. The telephone device according to claim 1, wherein the communication device is a FAX. 3. The telephone device according to claim 1, wherein the communication device is a MODEM. 4. The telephone device according to claim 1, wherein the line selection circuit is provided with a device for manually selecting a line. 5. The ring tone is a CPU constituting the control circuit.
The telephone device according to claim 1, wherein the telephone device is generated by: 6. The telephone device according to claim 1, wherein the line switching portion in the line selection circuit is configured by a relay. 7. The line switching part in the line selection circuit is constituted by an analog switch.
The telephone device according to claim 1. 8. The telephone device according to claim 1, wherein a cordless telephone circuit is added to the first line, and a 202 type configuration is added together with the speech circuit. 9. The telephone device according to claim 1, wherein a transmission / reception circuit of a cordless telephone is used instead of the speech circuit. 10. The telephone device according to claim 1, wherein a fax transmission / reception circuit is used in place of the speech circuit. 11. A MODE instead of the speech circuit
2. The telephone device according to claim 1, wherein M transmission / reception circuits are used.