JPH0537675A - Order wire equipment with 2-wire facsimile interface - Google Patents

Abstract

PURPOSE:To realize the equipment enabling communication between its own station and other station through the use of a facsimile equipment via an order wire. CONSTITUTION:At least one of input signals received via an order wire 1 is a specific signal including its own station number and an input control signal and the input control signal designates whether a receiver is a handset 6 or a facsimile equipment 15. When the facsimile equipment is designated, the facsimile equipment receives the input signal via the order wire via a branch circuit 2, a line connection switch 5, a handset - facsimile equipment changeover switch 7, a 4/2-wire changeover circuit 8, a 2-wire changeover switch 9 and a facsimile interface 12. When the reception is finished, a control signal detection circuit 3 detects an input end control signal from an input single signal received by the branch circuit, the control circuit 14 outputs an input interruption signal and the line connection switch disconnects the branch circuit from the handset - facsimile equipment changeover switch 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device using an order wire in communication between a local station and another station by a handset and a facsimile. The present invention uses an order wire without using a public line.

[0002]

2. Description of the Related Art Generally, an order wire is a 4-wire type. This type of device receives and transmits a 4-wire input signal and a 4-wire output signal via an order wire. At least one of the input signals includes the station number signal of the own station, which indicates the supply of the specific signal to the own station. Similarly, at least one of the output signals includes the station number signal of the other station indicating the transmission of the specific signal to the other station. Conventionally, this type of device is connected to an order wire and branches to process an input signal into an input single signal including the station number signal of the own station and an output independent signal into an output signal including the station number of another station. It has a circuit. The output-only signal is generated by the handset of the own station.

The input detection circuit is connected to the branch circuit, and the input control signal is detected as a detection signal from the input single signal.

The input determination circuit is connected to the input detection circuit,
It is determined whether or not the detection signal indicates the supply of the input single signal to the own station. When the input determination circuit determines that the detection signal indicates the supply of the input single signal to the own station, it outputs the input connection signal indicating the own station.

The instruction signal generating circuit outputs an instruction signal indicating that the output-only signal is generated by the own station. The output determination circuit is connected to the instruction signal generation circuit and outputs an output connection signal indicating connection to another station.

The supply circuit is connected to the output judgment circuit and receives the output connection signal and supplies the output independent signal to the station number signal of the other station indicating that the output independent signal is supplied to the other station.

The connection unit is connected to the input judging circuit,
If the input connection signal indicates the local station, connect the branch circuit to the handset of the local station. The connection unit is connected to the output determination circuit and receives the output connection signal and connects the branch circuit to the handset of the own station.

The inventor of the present application has found that even when there is no public line between stations, communication between stations can be performed by a handset via an order wire.

[0009]

However, when communicating between stations by facsimile, it is necessary to use a public line. As a result, it has been impossible for the conventional apparatus to communicate between offices by facsimile without a public line.

Therefore, a technical object of the present invention is to provide an apparatus which enables communication between a local station and another station by facsimile via an order wire.

[0011]

According to the present invention, a plurality of input signals are received via an order wire, and at least one of the input signals is a specific signal having an input control signal,
The input control signal is an order wire device with a two-wire facsimile interface that indicates the supply of the specific signal to either the handset or the facsimile, is connected to the order wire, and inputs the plurality of input signals. A branch circuit for processing to, a control signal detection circuit that is connected to the branch circuit, detects the input control signal from the input single signal as a detection signal, and is connected to the control signal detection circuit, and the detection signal is It is determined which one of the handset and the facsimile indicates the supply of the input single signal, and the detection signal indicates the supply of the input single signal to either the handset or the facsimile. If it is determined that the input connection signal that indicates either the handset or the facsimile And a connection means that is connected to an input determination circuit and connects the branch circuit to either the handset or the facsimile when the input connection signal indicates either the handset or the facsimile. An orderwire device with a two-wire facsimile interface is obtained.

Further, according to the present invention, a plurality of output signals are output through the order wire, and the output signals are
One is a specific signal having an output control signal, and the output control signal is a two-wire facsimile interface-equipped order wire device that indicates the generation of the specific signal by either the handset or the facsimile, and is connected to the order wire. A branch circuit for processing the output-only signal generated by either the handset or the facsimile into the plurality of output signals; and which of the handset and the facsimile generated the output-only signal. Is connected to the instruction signal generating means for generating an instruction signal indicating that the instruction signal indicates the generation of the output single signal by either the handset or the facsimile. However, the instruction signal is the output-only signal transmitted by either the handset or the facsimile. Output determination circuit that outputs an output connection signal indicating either the handset or the facsimile when it is determined that the output connection signal is output. Output connection means for connecting the branch circuit to either one of the handset and the facsimile when showing one of the handset and the facsimile, and the output connection connected to the output determination circuit. An order wire device with a two-wire facsimile interface, comprising: a supply circuit that supplies the output-only signal to the output control signal when a signal indicates either the handset or the facsimile. To be

[0013]

Embodiments of the present invention will now be described with reference to the drawings. The apparatus of this embodiment receives and transmits a 4-wire input signal and a 4-wire output signal via the order wire 1. At least one of the input signals is a specific signal including the station number signal of the local station and the input control signal. The station number signal of the own station indicates the supply of the specific signal to the own station. The input control signal indicates the supply of a specific signal to either the handset 6 or the fax simulator 15.

At least one of the output signals is a specific signal including a station number signal of another station and an output control signal. The station number signal of another station indicates the supply of a specific signal to another station. The output control signal indicates the generation of the output-only signal by either the handset 6 or the facsimile 15.

The case where the present apparatus receives a 4-wire input signal by either the handset 6 or the facsimile 15 will now be described.

A branch circuit 2 is connected to the order wire 1 and processes a 4-wire input signal into a single input signal including a calling number signal and an input control signal of its own station.

The input detection circuit 3 is connected to the branch circuit 2,
The station number signal of the own station and the input control signal are detected as detection signals from the input single signal. The control circuit 14 is connected to the input detection circuit and operates as an input determination circuit. The input determination circuit determines whether or not the station number signal of the own station indicates the supply of a single input signal to the own station, and the input control signal supplies the single input signal to the handset 6 and the facsimile 15. Determine whether to show. When the input judging circuit judges that the detection signal indicates the supply to the own station and the input signal is supplied to either the handset 6 or the facsimile 15, either the handset 6 or the facsimile 15 The input connection signal indicating one is output.

When the input connection signal indicates the supply of the input single signal to the handset 6 at the local station, the input determination circuit outputs the ringing signal. The operation unit 13 is connected to the control circuit 14 and operates as a calling circuit when a calling signal is supplied. The calling circuit receives the calling signal and notifies the operator of the calling of the own station. The calling circuit outputs a response signal when the handset 6 is taken off-hook by the operator. When the input judgment circuit detects the response signal, it stops the output of the calling signal of the calling circuit and supplies the input connection signal to the connection unit 20.

The connection unit 20 is connected to the control circuit 14 and has a line connection switch 5 and a handset / facsimile changeover switch 7 which are connected in series with each other. The line connection switch 5 is connected to the input determination circuit and receives the input connection signal and connects the branch circuit 2 to the handset-facsimile changeover switch 7. The handset-facsimile selector switch 7 is connected to the handset 6 and the facsimile 15 and connects a branch circuit to the handset 6 when the input connection signal indicates the supply of a single input signal to the handset 6.

When the handset communication by the handset 6 ends, the branch circuit 2 receives the input end control signal via the order wire. The input detection circuit 3 detects an input end control signal from the input single signal. The input determination circuit receives the input end control signal and outputs the input disconnection signal. The line connection switch 5 receives the input disconnection signal and disconnects the branch circuit 2 from the handset / facsimile switch 7.

When the input control signal indicates the supply of a single input signal to the facsimile 15 in the own station, the input determination circuit supplies the input control signal to the connection unit 20. The connection unit 20 further has a two-wire changeover switch 9. When the input connection signal indicates supply to the facsimile 15 as an input single signal, the two-wire changeover switch 9 receives the input connection signal which is a facsimile call signal and connects the input determination circuit to the facsimile call signal oscillation circuit 10.

The facsimile calling signal oscillation circuit 10 receives the facsimile calling signal and generates a calling signal, and the facsimile interface 1 is operated via the changeover switch 9.
The call signal is sent to 2. The facsimile interface 12 sends a calling signal to the facsimile 15. The facsimile 15 receives the calling signal and forms a DC loop similar to the calling state in the public line relay device.

In the connection unit 20, the DC loop detection circuit 11 is connected to the facsimile 15 via the facsimile interface 12, detects the DC loop of the facsimile 15 and outputs a loop signal. The input determination circuit is connected to the DC loop detection circuit 11 and receives a loop signal. The input determination circuit outputs a 2-line selection signal indicating the supply of the input single signal to the facsimile 15 and sends a 2-line switching signal to the 2-line switching switch 9.

The connection unit 20 further has a 4-wire / 2-wire conversion circuit 8. The conversion circuit 8 is connected to the handset-facsimile changeover switch 7 and the two-line changeover switch 9,
The input single signal is converted into a two-line type signal corresponding to the facsimile 15. The conversion switch 9 receives the 2-line switching signal and connects the conversion circuit 8 to the facsimile interface 12.

The line connection switch 5 receives the input connection signal and connects the branch circuit 2 to the handset-facsimile changeover switch 7. The handset-facsimile selector switch 7 connects the branch circuit 2 to the conversion circuit 8, receives the input control signal, and outputs the input single signal to the conversion circuit 8.

As can be seen from the above description, the facsimile 15 receives the input signal through the order wire from the branch circuit 2, the line connection switch 5, the handset-facsimile changeover switch 7, the two-wire conversion circuit 8, the two-wire changeover switch 9, and the like. It is received via the facsimile interface 12.

When the facsimile communication by the facsimile 15 ends, the input detection circuit 3 detects the input end control signal from the input single signal received by the branch circuit 2 via the order wire.

In response to the input end control signal, the input judgment circuit outputs the input disconnection signal. The line connection switch 5 receives the input disconnection signal and disconnects the branch circuit 2 from the handset / facsimile switch 7.

Next, the present apparatus operates the handset 6 and the facsimile 1.
The case of transmitting a 4-wire output signal by either one of 5 and 5 will be described. The operation unit 13 functions as an instruction signal generation circuit when the handset 6 or the facsimile 15 is operated by an operator in the own station. The instruction signal generation circuit indicates the supply of the output independent signal to the other station and outputs the instruction signal indicating the generation of the output independent signal by either the handset 6 or the facsimile 15.

The control circuit 14 is connected to the instruction signal generating circuit and operates as an output judging circuit. The output judging circuit outputs an instruction signal as an independent signal. The handset 6 or the facsimile 1
It is determined by which of 5 the above is generated. When the output determination circuit determines that the instruction signal indicates that the output-only signal is generated by either the handset 6 or the facsimile 15, it outputs an output connection signal indicating either the handset 6 or the facsimile 15. Output.

The line connection switch 5 is connected to the output judgment circuit, receives the output connection signal, and sends the branch circuit 2 to the handset-
Connect to the facsimile changeover switch 7. The handset-facsimile selector switch 7 connects the branch circuit to the handset 6 when the output connection signal indicates that the output-only signal is generated by the handset 6 of the own station.

The supply circuit 7 is connected to the output determination circuit and supplies the output control signal to the output independent signal.

The branch circuit 2 receives the output-only signal having the output control signal, processes the output-only signal into a 4-wire output signal, and transmits the 4-wire output signal to another station via the order wire. When the handset communication by the handset 6 ends, the instruction signal generation circuit outputs an output end control signal.

The output judging circuit receives the output end control signal,
Outputs an output disconnect signal. The supply circuit 4 receives the output disconnection signal, generates an end signal, and sends the end signal to the branch circuit 2. The branch circuit 2 processes the end signal as a single output signal into a 4-wire output signal, and sends the output signal to another station via the order wire.

When the output connection signal indicates that the output-only signal is generated by the facsimile 15 of the own station,
The output determination circuit outputs an output connection signal indicating the generation of the output-only signal by the facsimile 15 of its own station.

In the connection unit 20, the DC loop detection circuit 11 detects the DC loop of the facsimile 15 via the facsimile interface 12 and outputs a loop signal.

The output judging circuit is connected to the DC loop detecting circuit 11 and receives a loop signal. The output determination circuit outputs a 2-line selection signal indicating the generation of the output-only signal, and sends the 2-line selection signal to the 2-line selection switch 9.

The 2-line selection switch 9 receives the 2-line selection signal and connects the conversion circuit 8 to the facsimile 15 via the facsimile interface 12. The conversion circuit 8 converts the output single signal into a 4-wire type signal.

The line connection switch 5 receives the output connection signal and connects the branch circuit 2 to the handset-facsimile selector switch 7. The handset-facsimile selector switch 7 connects the branch circuit 2 to the conversion circuit 8, receives an output connection signal, and sends a 4-wire type signal, which is an output-only signal, to the branch circuit.

As described above, the output determination circuit receives the instruction signal generated by the instruction signal generation circuit and outputs the output connection signal, but the output determination circuit directly receives the loop signal and outputs the output connection signal. Is also good.

[0041]

According to the present invention, communication between a handset and a facsimile can be performed via an order wire without using a public line.

[Brief description of drawings]

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

[Explanation of symbols]

1 order wire 2 branch circuits 3 Control signal detection circuit 4 Control signal supply circuit 5 line connection switch 6 handset 7 Handset-fax switch 8 4-wire / 2-wire conversion circuit 9 2-wire switch 10 Facsimile calling signal oscillation circuit 11 DC loop detection circuit 12 Facsimile interface 13 Operation unit 14 Control circuit 20 connection units

Claims (2)

[Claims] 1. A plurality of input signals are received via an order wire, at least one of the input signals is a specific signal having an input control signal, and the input control signal is transmitted to either one of a handset and a facsimile. A order wire device with a two-wire facsimile interface showing the supply of the specific signal, a branch circuit connected to the order wire and processing the plurality of input signals into an input single signal, and a branch circuit connected to the branch circuit The input control signal from a single signal, the control signal detection circuit for detecting as a detection signal, and connected to the control signal detection circuit, the detection signal, the input single signal to either the handset or the facsimile It is determined whether the input signal is supplied to either the handset or the facsimile. If it is determined that the
An input determination circuit that outputs an input connection signal that indicates either the handset or the facsimile, and is connected to the input determination circuit, and when the input connection signal indicates either the handset or the facsimile, An order wire device with a two-wire facsimile interface, comprising: connecting means for connecting the branch circuit to either the handset or the facsimile. 2. A plurality of output signals are output via an order wire, at least one of the output signals is a specific signal having an output control signal, and the output control signal is output by either a handset or a facsimile. An order wire device with a two-wire facsimile interface that indicates the generation of the specific signal, wherein an output single signal that is connected to the order wire and that is generated by either the handset or the facsimile is processed into the plurality of output signals. A branch circuit, an instruction signal generation unit that generates an instruction signal indicating whether the output single signal is generated by the handset or the facsimile, and is connected to the instruction signal generation unit, the instruction signal, Whether the output handset signal is generated by the handset or the facsimile If it is determined that the instruction signal indicates the generation of the output-only signal by either the handset or the facsimile, the output connection signal indicating either the handset or the facsimile. And an output determination circuit for outputting the output determination circuit, and if the output connection signal indicates one of the handset and the facsimile, to either the handset or the facsimile. Output connection means for connecting the branch circuit, connected to the output determination circuit, when the output connection signal indicates either the handset or the facsimile, the output single signal to the output control signal An order wire device with a two-wire facsimile interface, comprising: a supply circuit for supplying.