JPH07226810A - Telephone set - Google Patents

Abstract

PURPOSE:To eliminate complicated operation of the connection/interruption of a telephone line at every call by permitting a callee telephone set to transmit a facsimile data signal in response to a pseudo signal which can be received. CONSTITUTION:When a caller-side is in a facsimile equipment and it requests facsimile communication, a telephone set 1 spuriously transmits a standby signal showing that the facsimile data signal can be received. Since the facsimile equipment receiving the standby signal transmits the facsimile data signal, the telephone set 1 is prevented from repeatedly being called by a dial function with which the facsimile equipment is provided. Thus, the troublesome operation that an operator connects/interrupts the telephone line at every call of the telephone set 1 can be eliminated. The pseudo signal is transmitted when an identification signal showing that the caller-side is the facsimile equipment is detected. Thus, the caller-side is prevented from being operated and called by a redialing function.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone that makes a voice call with a calling party through a telephone line, and in particular, can prevent a re-call from a facsimile machine that performs information communication using the telephone line. Regarding phones.

[0002]

2. Description of the Related Art A telephone converts a voice into an electric signal, sends the electric signal to the other party through a telephone line, and reproduces the electric signal sent from the other party through the telephone line into a voice to make a call. , A function of selecting a desired subscriber from a large number of telephone subscribers, transmitting a signal for connecting and calling, and a function of receiving a calling signal and notifying an incoming call, Consists of a transmitter, receiver, call circuit, dial circuit and bell.

In making a call, the calling party inputs the dialed number of the selected called party. As a result, a signal for selecting the called party is generated in the dial circuit, and the signal is sent from the telephone set to the exchange of the central office connected through the telephone line. The exchange that has received the signal sends a ringing signal indicating an incoming call to the called party to notify the called party of the incoming call. That is, on the called side, the bell responds to the call signal. When the called party turns off the hook switch by picking up the handset or the like to connect the line, voice communication becomes possible through the handsets of each other. That is, the voice is converted into an electric signal by the transmitter, and the electric signal is sent to the other party through the telephone line. The received electric signal is converted into voice at the handset.

On the other hand, a facsimile machine has become widespread as an information communication apparatus using the telephone line. The facsimile apparatus has an image communication function, and in addition to the components of the telephone, an image reading unit that reads an image to be transmitted and converts it into data, and a recording unit that outputs the received data as an image on recording paper. And a modem for modulating / demodulating a transmission / reception signal.

[0005]

During a voice call using the telephone set or an image communication using a facsimile machine, the caller selects a called party by inputting a dial number for identifying the called party. Done by The dialed number is entered by the caller himself and may be entered incorrectly in some cases.

When the calling party has only the telephone function, the called party can make a voice call if it has at least the telephone function. If the calling party has a telephone function and a facsimile function and the called party has only a telephone function, only the voice call can be performed. If the called party has a telephone function and a facsimile function, voice call and image communication can be performed.

When image communication is performed using the facsimile device, if a telephone number having only a telephone function is selected due to an incorrect dial number input as described above, the telephone is reactivated by the redial function provided in the facsimile device. Will be called repeatedly.

The redial function is a function of making a call again after a predetermined time has elapsed, for example, when the other facsimile machine is communicating with another facsimile machine and data cannot be transmitted. It is provided in almost all popular facsimile machines.

Although the called party connects the telephone line by the response of the bell of the selected telephone, the telephone line is cut off because the calling side is the facsimile machine. Therefore, the facsimile device cannot transmit data, and the redial function operates. If the number of re-calls is set in advance, the called party will handle the number of times, and if not, it will be handled until the caller notices that it is selected incorrectly. It is very annoying to the called party.

An object of the present invention is to provide a telephone which can prevent a call from being reissued from a facsimile machine and reduce the troublesome operation of a called party.

[0011]

SUMMARY OF THE INVENTION The present invention provides pseudo signal output means for outputting a pseudo signal indicating that a facsimile data signal is receivable in a telephone that makes a voice call with a calling party via a telephone line. It is a telephone characterized by comprising.

The pseudo signal output means of the present invention is activated when the detection means detects an identification signal indicating that the calling side is a facsimile machine, or when the operator performs a switch operation. It is characterized by

[0013]

According to the present invention, the telephone which makes a voice call with the caller through the telephone line is provided with the pseudo signal output means for outputting the pseudo signal indicating that the facsimile data signal can be received.

The pseudo signal is, for example, a response signal in response to a calling signal from the calling side, a mode setting signal for setting a transmission mode, and a transmission requesting the calling side to transmit a facsimile data signal. This is a request signal, and preferably, the detecting means provided in the telephone automatically sends out when an identification signal indicating that the calling side is a facsimile machine is detected. Alternatively, it is sent when the operator judges that the calling party is the facsimile machine by the signal sound heard from the receiver and operates the switch. The facsimile machine that has received the pseudo signal transmits a facsimile data signal.

Therefore, even if the facsimile apparatus has a redial function for making a call again when the facsimile data signal cannot be transmitted, the telephone is not called again. Therefore, it is possible to eliminate the troublesome operation of connecting / disconnecting the telephone line each time the called party is called again.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing the electrical construction of a telephone 1 which is an embodiment of the present invention. The telephone 1 is used by being connected to the subscriber line 2, and is used as a system control circuit 3, a communication control circuit 4, a call bell 7, a speech circuit 8, a handset 9, a dial circuit 10, a ten-key pad 11, a voice signal detection circuit 12, and an identification. It is configured to include a signal detection circuit 13, a standby signal generation circuit 14, and a switch 15.

The system control circuit 3 controls the entire telephone 1, and includes a modem 5, a network control circuit 6, a calling bell 7, a dial circuit 10, a voice signal detection circuit 12, an identification signal detection circuit 13 and a standby signal. Generation circuit 14
Control. Network control circuit 6 connected to subscriber line 2
Performs a line control operation and an automatic reception operation for connecting a telephone line in response to dialing from the caller side. The network control circuit 6 is connected to the system control circuit 3 via the modem 5.
Connected to. The modem 5 transmits / receives via the subscriber line 2.
Modulates and demodulates the received signal. The communication control circuit 4 is configured to include the modem 5 and the network control circuit 6.

A call bell 7 is connected to the network control circuit 6, and a dial circuit 10 is connected to the call bell 7.
The call bell 7 rings in response to a call signal indicating an incoming call from the exchange of the telephone office, and notifies the incoming call. Also, call bell 7
Is a handset 9 including a transmitter and a receiver, which the operator can hold and talk with, is connected via a speech circuit 8 for preventing sidetones and enabling voice communication. It The dial circuit 10 performs a dial transmission operation in accordance with the input of the dial number from the ten-key pad 11 at the time of calling.

The voice signal detection circuit 12 detects a voice signal sent through the subscriber line 2 during a voice call. The identification signal detection circuit 13 detects an identification signal indicating that the caller side is a facsimile machine when receiving a call. The standby signal generation circuit 14 is a switch 1 connected to the standby signal generation circuit 14 when the identification signal is detected by the identification signal detection circuit 13.
5 is activated when operated by the operator, and the telephone 1
Outputs a standby signal which is a pseudo signal indicating that the facsimile data signal can be received.

When the calling side of the telephone 1 is a facsimile machine and the facsimile machine selects the telephone 1 by mistake, the telephone 1 is recalled by the redial function provided in the facsimile machine. It has a function to prevent Therefore, it is assumed that the telephone set 1 is the called party side and the general facsimile machine having the redial function is the calling party side, and the operation of the telephone set 1 when the facsimile machine requests the facsimile communication will be described. To do.

FIG. 2 is a flow chart showing the operation of the telephone 1. In step a1, the telephone 1 which receives the calling signal from the exchange by dialing the facsimile machine sends a ringing tone from the calling bell 7 to notify the called party of the incoming call.

At step a2, it is judged whether or not the hook switch is turned off by the called party lifting the handset 9. When it is determined that the hook switch is off, the process proceeds to step a3 and the telephone line is connected. If it is determined that the hook switch is not turned off, the process returns to step a1 to continue sending the ringing tone and notify the called party of the incoming call.

At step a4, it is judged whether the signal sent through the subscriber line 2 is an identification signal indicating that the calling side is a facsimile machine. If it is determined that the signal is the identification signal, the process proceeds to step a5. If it is determined that the signal is not the identification signal, the process proceeds to step a10. This determination is made by the identification signal detection circuit 13. The determination in step a4 can also be made depending on whether or not the operator operates the switch 15 in response to the signal sound heard from the handset of the handset 9.

At step a5, the telephone 1 sends out a standby signal indicating that the telephone 1 can receive a facsimile data signal. This standby signal is sent by operating the standby signal generation circuit 14 in response to the detection result of the identification signal detection circuit 13. Also, it is sent by the operator operating the switch 15.

In step a6, the facsimile machine receiving the standby signal sends out a facsimile data signal, and the telephone set 1 receives the facsimile data signal.

At step a7, it is judged whether or not there is a data end signal indicating that the facsimile data signal sent from the facsimile device has ended. If it is determined that the data end signal is present, the process proceeds to step a8, and if it is determined that the data end signal is not present, the process returns to step a6 and the facsimile data signal is received.

At step a8, the telephone set 1 sends an end signal indicating that the reception of the facsimile data signal has been completed.

At step a9, the telephone line is cut off.

If it is determined in step a4 that the signal is not an identification signal, that is, if a voice call is to be made, it is determined in step a10 whether the hook switch is on. The telephone line is connected during the period when the hook switch is off, and voice communication is performed during the period. If it is determined that the hook switch has been turned on, the process proceeds to step a9 to disconnect the telephone line. If it is determined that the hook switch is not on, the state of the hook switch is monitored in step a10.

As described above, the telephone set 1 is a facsimile machine on the caller side, and when the facsimile communication is requested, the telephone 1 pseudo-transmits a standby signal indicating that the facsimile data signal is receivable. Since the facsimile apparatus which has received the standby signal sends out the facsimile data signal, the telephone 1 is not repeatedly called by the redial function of the facsimile apparatus. Therefore, it is possible to eliminate the troublesome operation in which the operator connects / disconnects the telephone line each time the telephone 1 is called.

FIG. 3 is a diagram showing a transmission procedure (hereinafter referred to as a phase) and a main function during general facsimile communication between the facsimile devices. Also, FIG.
FIG. 4 is a diagram showing a specific signal sequence. The transmission phase during facsimile communication is composed of phases A to E. Phase A is a sequence of call setup and line establishment. Phase B is a sequence for confirming the states of terminals, transmission paths, etc. and controlling the terminals. Phase C includes a phase for transmitting a facsimile data signal and a phase for performing control during transmission, and is a process for transmitting data, confirming the data, and maintaining synchronization. Phase D is a process of terminating the facsimile data signal and confirming reception. Phase E is a process of recovering the call, that is, disconnecting the line.

Specifically, referring to FIG. 4, a calling signal from the calling terminal on the caller side (transmission side) is a call signal, and CNG (indicating that the caller side is a non-voice terminal). Calling To
ne) signal is sent. Then, a CED (Called Station Ide) which is a called terminal identification signal from the called party (reception side).
ntification) signal is transmitted. Here, call setup and line establishment are performed.

Further, the CED signal is sent out for 75 m.
After sec ± 20 msec, the called party will start DIS (Digi
tal Identificatioin Signal) signal is transmitted. DI
The S signal informs the calling party of all the functions possessed by the called party, that is, the facsimile group number, the transmission / reception function, the terminal constant, and the like. Next, from the caller side, DCS (DigitalCom
mand Signal) signal is transmitted. The DCS signal selects and specifies a desired function from the functions indicated by the DIS signal. As a result, it is determined that the calling party performs the transmitting operation and the called party performs the receiving operation. After that, all command signals are transmitted from the transmitting side, and response signals to the signals are transmitted from the receiving side.

Next, 75 for switching to the high speed modem
After a rest period of msec ± 20 msec, a training signal for adjusting a high-speed modem for transmitting a facsimile data signal is transmitted from the transmitting side, and a reception preparation confirmation signal is further transmitted from the receiving side, and a facsimile data signal is transmitted to the transmitting side. CFR (Confirmation to Receive)
The signal is sent out.

Further, the facsimile data signal is transmitted from the transmitting side following the transmission of the training signal. 1
When the page of facsimile data is transmitted, subsequently, an RTC (Return to Control) signal indicating that the transmission of one page of the facsimile data is completed and the control signal is transferred is transmitted. Then, for example, when the facsimile data to be transmitted is completed for one page, an EOP (End of Pro) indicating that there is no original to be continuously transmitted from the transmitting side.
Cedures) signal is transmitted, and an MCF (Message Confirmation) signal which is a message confirmation signal is transmitted from the receiving side. If there are manuscripts to be sent continuously, EOP above
Instead of a signal, an MPS (MultipageSignal) signal or an EOM (End of Message) signal is transmitted, and the procedure according to each operation is repeated.

Further, a DCN (Disconnect) signal, which is a disconnection command signal, is sent from the transmitting side which has received the MCF signal to disconnect the telephone line.

FIG. 5 is a flowchart showing the operation of the facsimile machine on the calling side (sending side). Step b
In 1, the facsimile machine on the caller side is connected to the telephone line. At step b2, a CNG signal which is a calling signal is transmitted. At step b3, it is judged whether or not the called party receiving the CNG signal connects the telephone line and the line between the calling party and the called party is in the DC circuit closed state. When it is determined that the DC circuit is closed, the process proceeds to step b4, and when it is determined that the DC circuit is not closed, the process proceeds to step b10.

At step b10, the telephone line is cut off,
Move to step b11. In step b11, a predetermined time T1 is measured, and when the time T1 has elapsed, the process returns to step b1 and the above-described operation is repeated again. This operation is what is called a redial function.

At step b4, the DCS signal is transmitted. At step b5, it is judged whether or not the CFR signal prompting the transmission of the facsimile data signal is transmitted from the called party side. If it is determined that the CFR signal is present, step b6
If it is determined that there is no CFR signal, the process proceeds to step b10.
Then, the operation by the above-mentioned redial function is performed.

At step b6, the facsimile data signal is transmitted. At step b7, the EOP signal indicating the end of the facsimile data signal is transmitted.

At step b8, it is judged whether or not there is an MCF signal from the called party who has received the EOP signal, which indicates that the reception of data has been completed. If it is determined that the MCF signal is present, the process proceeds to step b9, and if it is determined that the MCF signal is not present, the process proceeds to step b12.

At step b12, the time T2 is measured, and when the predetermined time T2 has elapsed, step b
The process moves to 13 to display an error, and then to step b9. If the time T2 has not elapsed in step b12, the process returns to step b8. At step b9, the telephone line is cut off.

FIG. 6 is a flowchart showing the operation of the facsimile machine on the called side (reception side). Step c
In 1, the facsimile machine on the called side is connected to the telephone line. At step c2, it is judged whether or not there is a CNG signal from the calling party side. If it judges that there is a CNG signal,
The process proceeds to step c3, and if it is determined that there is no such information, the process waits at step c2.

In step c3, the CED signal and the DIS signal are transmitted, and then D from the facsimile machine on the calling side is sent.
Further CFR signals are transmitted in response to the CS signals.
In step c4, the facsimile data signal from the facsimile machine on the calling side is received. At step c5, the received facsimile data signal is printed out.

At step c6, it is judged whether or not there is an EOP signal from the facsimile machine on the calling side. If it is determined that the EOP signal is present, the process proceeds to step c7, and if it is determined that it is not present, the process returns to step c4. In step c7, MCF
The signal is sent out. At step c8, the telephone line is cut off.

The signals transmitted and received during general facsimile communication are as described above, and the telephone set 1 of this embodiment identifies that the calling party is a facsimile machine by a CNG signal or a DCS signal, for example. Recognize that you are requesting facsimile communication. Further, the standby signal transmitted by the telephone 1 and indicating that the telephone 1 can receive the facsimile data signal is, for example, a CED signal, a DIS signal and a CFR signal.

In the operation of the telephone 1, even if the telephone line is cut off immediately after the standby signal is transmitted in step a5, no inconvenience due to the redial function of the facsimile machine occurs. In this case, since the MCF signal is not detected on the side of the facsimile device that has made the call, an error is displayed.

[0048]

As described above, according to the present invention, the telephone set on the called side outputs a pseudo signal indicating that the facsimile data signal can be received to the calling side. Further, preferably, the pseudo signal is transmitted when an identification signal indicating that the calling side is a facsimile machine is detected.

Therefore, since the caller side sends out the facsimile data signal in response to the pseudo signal, the caller side does not repeatedly make a call by the redial function, and a telephone call is made each time a call is made. The troublesome operation of connecting / disconnecting the line can be eliminated.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a telephone 1 which is an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of the telephone 1.

FIG. 3 is a diagram showing a transmission phase and main functions during general facsimile communication between facsimile apparatuses.

FIG. 4 is a diagram showing a specific signal sequence.

FIG. 5 is a flowchart showing the operation of the facsimile machine on the calling side (sending side).

FIG. 6 is a flowchart showing the operation of the facsimile machine on the called side (reception side).

[Explanation of symbols]

 1 Telephone 2 Subscriber Line 3 System Control Circuit 4 Communication Control Circuit 5 Modem 6 Network Control Circuit 7 Calling Bell 9 Handset 13 Identification Signal Detection Circuit 14 Standby Signal Generation Circuit 15 Switch

Claims (2)

[Claims] 1. A telephone for making a voice call with a calling party via a telephone line, comprising a pseudo signal output means for outputting a pseudo signal indicating that a facsimile data signal can be received. 2. The pseudo signal output means is operated when the detection means detects an identification signal indicating that the calling side is a facsimile machine, or when the operator performs a switch operation. The telephone set according to claim 1, wherein: