JPH02215261A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To manage a facsimile equipment with one telephone line by providing a call signal detecting circuit from the telephone line, a circuit to switchingly connect a modem for facsimile communication or telex and a modem for electronic mail communication to the telephone line, and a switching control circuit. CONSTITUTION:When facsimile equipment 1 receives an incoming, at first, a modem 4 for telex and electronic main communication is connected to the telephone line, the connection mutually between modems is tried, and when the connection can be executed, the incoming procedure is started. When the connection cannot be executed in a definite time by a timer 8, the telephone line is connected to a modem 5 for facsimile communication. In such a way, since the modems 4 and 5 are connected to one telephone line by switching a switching circuit with a control circuit 7, in both cases of the incoming from the facsimile and of the incoming from the telex and electronic mail, an identifying signal detection is correctly detected, the switching control is executed, the communication matched to an opponent destination can be executed, one telephone line is sufficient, and an installation charge and a contract quantity can be saved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a facsimile machine, and particularly to a facsimile machine that can switch between a modem for facsimile communication and a modem for telex and e-mail communication.

(Prior Art) A conventional facsimile device has two parts: a modem for facsimile communication and a telephone for conversation. Select it and connect to the telephone line. In this case, for example, the facsimile machine on the called side uses a voice response circuit to instruct the operator on the calling side to select between facsimile communication and conversational communication (telephone call), and detects the selection signal instructed by the operator. The telephone line is switched between connecting to the modem on the facsimile side and connecting to the telephone (Japanese Patent Application Laid-Open No. 63-1999).
No. 74264).

(Problems to be Solved by the Invention) However, in the above-mentioned conventional facsimile machine,
Even if you have a telex modem instead of a telephone and use a single telephone line for both telex and facsimile communications, the telex exchange does not have the ability to receive and recognize the voice response from the voice response circuit and issue a selection signal. ,
When an incoming call is received from a telex exchange, even if the voice response circuit issues a voice response, there is no selection signal from the telex exchange, and therefore no selection signal from the telex exchange can be received. Unable to switch connection to line. Therefore, conventionally, when performing telex communication and facsimile communication, telephone lines were assigned to each, and communication was carried out using two telephone lines.

In this way, two telephone lines were required to carry out telex communication and facsimile communication.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a facsimile device that can perform telex communication and facsimile communication using a single telephone line, thereby saving telephone line installation fees and contract fees. .

(Means for Solving the Problems) The present invention provides a facsimile communication modem and a telex communication modem.
In a facsimile apparatus having a modem for e-mail communication, a ring signal detection circuit detects a ring signal from a telephone line, and a switch for connecting the facsimile communication modem or the telex or e-mail communication modem to the telephone line. and a control circuit that switches the switching circuit under certain conditions after detecting a calling signal.

(Function) Therefore, when a ringing signal is detected by the ringing detection circuit (
when an incoming call is received), the control circuit connects the telephone line to a predetermined one of the facsimile communication modem or the telex or e-mail communication modem, and attempts to connect the modems to each other; When the communication connection is established, the communication is transferred to the one modem and the communication reception procedure is started.) When the communication connection is established under certain conditions (
If this is not possible (for example, within a certain period of time), the telephone line is connected to the other modem. This allows telex, e-mail communication and facsimile communication to be carried out on a single telephone line, thereby saving telephone line installation fees and contract fees.

(Example) Next, an example of the invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of a facsimile apparatus according to the present invention, in which reference numeral 1 denotes a facsimile apparatus, and this facsimile apparatus 1 includes a ringing signal detection circuit 2 for detecting a ringing signal from a telephone line; An off-hook relay 3 for connecting to a telephone line, a modem 4 for telex and e-mail communication, a modem 5 for facsimile communication, and a modem 4 for telex and e-mail communication and a modem 5 for facsimile communication are switched and connected to the telephone line. A relay 6, a control circuit 7 that controls the facsimile machine 1, and a timer in which an arbitrary time value t1 is set by the control circuit 7, which counts time using a start signal e, and outputs a timeout signal f when the set value 1+ is reached. 8 and telex provided as needed.

It consists of a telex and e-mail identification signal detection circuit 9 that recognizes identification signals from an e-mail exchange.

Note that 10 is a line connection terminal connected to a telephone line. Telex here.

The e-mail communication modem 4 is a modem for telex communication or e-mail communication, and is usually a modem capable of full-duplex communication, for example, according to CCITT Recommendation V, 22 bis.
, V, 22. V, 21 or Be1l 212A, 103
J etc. Nomotem. Also, modem 5 for facsimile communication
is a modem for facsimile communication, which complies with CCITT Recommendation V, 29. This is a half-duplex communication modem consisting of V, 27ter, V, and 21 modems.

In addition, a is a detection output signal of a calling signal which is an output of the calling signal detection circuit 2, b is a transmission request signal instructing carrier transmission of the modem 4 for telex and e-mail communication, and C is a signal for instructing the modem 4 for telex and e-mail communication. a received carrier detection signal indicating that a regular handshake carrier has been received from the other party's modem, d is received data, g is telex, and off-hook relay 2 connects modem 4 for e-mail communication and modem 5 for facsimile communication to the telephone line. This off-footer signal is output from the control circuit 7. In addition, h is a modem 4 for telex, e-mail communication, or a modem 5 for facsimile communication.
This switching signal is output from the control circuit 7 and instructs which one of them should be connected to the telephone line.

i is a transmission request signal in accordance with the CCITT Recommendation (3) for modems for facsimile communication, instructing transmission of the carrier of the recommended child dem. j is a transmission data line for transmitting procedure data in connection procedure phase B of CCITT Recommendation T, 30. Further, k is a telex/email identification signal detection signal output from the telex/email identification signal detection circuit 9.

Further, the off-hook relay 3 and the relay 6 constitute a switching circuit 11 according to the present invention for connecting the facsimile communication modem 4 or the telex or e-mail communication modem 5 to a telephone line.

Next, the operation shown in FIG. 1 will be explained with reference to FIGS. 2 to 5. Furthermore, Fig. 2 is a flowchart for explaining the operation of Fig. 1, Fig. 3 is a diagram showing an example of the signal flow when an incoming call is received from a telex or e-mail exchange, and Fig. 4 is a diagram showing an example of the signal flow when a call is received from a telex or e-mail exchange. FIG. 3 is a diagram showing a signal flow when receiving an incoming call from a mobile phone.

When the facsimile machine 1 receives an incoming call from a telex or e-mail exchange, the control circuit 7 operates the off-hook relay 3 with an off-hook signal g based on the detection output signal of the paging signal detection circuit 2, and closes the relay switch. Then, the relay 6 is activated by a switching signal, and the relay switch is switched to the modem 4 side for telex and e-mail communication (steps 81 to S3 in FIG. 2).

Next, the control circuit 7 sets a time value t1 to the timer 8, and the timer 8 counts the time based on the start signal e (steps S4 and S5 in the figure). Next, the control circuit 7 supplies a transmission request signal to the modem 4 for telex and e-mail communication, which instructs the modem 4 for telex and e-mail communication to transmit the carrier signal. A carrier signal is sent to the telephone line via the switch, the switch of the off-hook relay 3, and the line connection terminal 10 (step S6 in the figure). If the telex and e-mail communication modem 4 receives a regular handshake carrier from the partner modem and supplies the received carrier detection signal C to the control circuit 7 before the timer 8 times out (t,), the telex , and shifts to e-mail communication (steps S7 and 38 in the figure). In other words, the telex/email communication modem 4 is connected to the other party's modem. Note that step S9 is added in case the modem 4 for telex and e-mail communication erroneously sends out the received carrier detection signal C to the control circuit 7 due to the influence of external noise. , the predetermined control data from the e-mail exchanger is sent to the telex and e-mail communication modem 4.
The received data d is received by the demodulation circuit of the control circuit 7.
The control data is detected by the judgment section in the control circuit 7, and then the communication is shifted to telex or e-mail communication.If there is no influence of noise, step S9 is not necessary, and the above-mentioned There is also no need for a judgment section.

Further, in step S7, if the telex/email communication modem 4 does not receive a regular handshake carrier from the partner modem, and therefore does not send the received carrier detection signal C to the control circuit 7, the timer 8 times out. , the control circuit 7 cancels the transmission of the transmission request signal to the modem 4 for telex and e-mail communication, and switches the switch of the relay 6 to the modem 5 for facsimile communication by the switching signal (step S7 in the figure).゜SIO, 5l
l). Next, the control circuit 7 supplies the transmission request signal i to the facsimile communication modem 5, and when the facsimile communication modem 5 receives this transmission request signal i, it transfers the carrier signal via the switching circuit 11, that is, the switch of the relay 6. and sends it to the telephone line via the switch of the off-hook relay 3 (step 512 in the figure). Next, the control circuit 7 sends a digital identification signal (DigitalIde nti
It is called a fication signal, abbreviated as DIS. ) Send data to facsimile communication modem 5''
(Step 513 in the figure), the digital identification signal is modulated by the facsimile communication modem 5 and output to the telephone line via the switching circuit 11. From now on, the system will be shifted to facsimile communication.

As can be seen from the above, when receiving a call from a telex or e-mail exchange, step 8 in Figure 2
1 to S9, the communication will proceed to telex and e-mail communication, and the signal flow in this case is shown in FIG.

Further, when receiving an incoming call from the other party's facsimile machine, steps S1 to S7 in FIG. SION5
After 13 years, we decided to switch to facsimile communication.
The signal flow in that case is shown in FIG. In addition, the fourth
In the figure, the calling side facsimile machine is CCITT
Compared to the timeout value T, (=35±5 seconds) specified in Sections 5.4 and 3.1 of Recommendation T, 30, the setting value t of timer 8 is about 5 seconds, so there is a sufficient margin. , there is no problem with the connection procedure.

Next, depending on the telex or e-mail exchange, when the facsimile machine 1 on the called side goes off-hook, that is, when the switch of the off-hook relay 3 is closed by the off-footer signal g due to the incoming call, the off-footer is detected and the facsimile machine 1 on the called side goes off-hook. Some mail exchangers transmit telex and e-mail identification signals. In such a case, you can tell when you set the facsimile device 1 to the telephone line in advance, so the telex/email identification signal detection circuit 9
is installed in the facsimile machine 1 as shown in FIG. 1, connected to a telephone line via the switch of the off-hook relay 3 and the line connection terminal 10, and detects transmitted telex and e-mail identification signals. Then, the telex/email identification signal detection signal k from the telex/email identification signal detection circuit 9 is supplied to the control circuit 7. Therefore, the control circuit 7 is set in advance to operate as follows depending on whether there is a telex or e-mail identification signal. That is, when set to the mode with telex and e-mail identification signals, if there is a telex and e-mail identification signal detection signal k before the timer 8 times out, the control circuit 7 shifts to telex and e-mail communications.

E-mail communication control operation begins (step 5 in Figure 2).
14 to 516), in the mode with the telex/email identification signal, if the timer 8 times out without sending the telex/email identification signal detection signal k, the operations from step S6 described above are performed. enter,
Transition to facsimile communication. On the other hand, when the mode is set to no telex or e-mail identification signal, steps 81 to S5 in FIG. 2 described above. After passing through S14, the operation starts from step S6 described above.

Thus, the control flow when there is a telex/email identification signal from the telex/email exchange is shown as adding steps 314 to S16 in block A of FIG.

FIG. 5 shows the flow of signals when an incoming call is received from a telex or e-mail exchange in the presence of a telex or e-mail identification signal. As can be seen from the figure, the start signal e from the control circuit 7 to the timer 8 is
It is sent at the time when the off-footer signal g is sent from.

As can be seen from the above explanation, when this facsimile machine l receives an incoming call, it first connects the telex/email communication modem 4 to the telephone line, attempts to connect the modems to each other, and when a communication connection is established. enters the telex and e-mail incoming procedures.

On the other hand, if communication connection cannot be established within a certain period of time, the telephone line is connected to the facsimile communication modem 5. By switching and connecting the modem 4 for telex and e-mail communications and the modem 5 for facsimile communication to one telephone line in this way, even if the calling party's device is not a telex or e-mail but a facsimile, it is possible to send telex or e-mail communications. Instead of the communication modem 4, the facsimile communication modem 5 can be connected to the telephone line. Therefore, whether it is an incoming call from a facsimile, telex, or e-mail, communication can be made correctly depending on the recipient, and only one telephone line is required. You can save on fees and contract fees.

In this embodiment, the modem 4 for telex and e-mail communication is first connected to the telephone line, and if communication cannot be established within a certain period of time, the modem 5 for facsimile communication is connected to the telephone line.
Although the present invention is not limited to this, the order in which the modem 4 for telex and e-mail communication and the modem 5 for facsimile communication are connected to the telephone line may be reversed. . The connection switching of the telephone line from the facsimile communication modem 5 to the telex/email communication modem 4 is performed by detecting whether or not a calling tone (CNG) sent from the other party's facsimile is received. become. In this case, it goes without saying that the configuration of FIG. 1 and the flowchart of FIG. 2 will be modified accordingly.

Further, in this embodiment, the switching circuit 11 is composed of the off-hook relay 3 and the relay 6, but the present invention is not limited to this. For example, the switching circuit 11 may omit the off-hook relay 3 and short-circuit the relay. When the facsimile machine 1 is not in use, the switch 6 may be placed in a neutral state (intermediate position) without being connected to the modem 4 for telex or e-mail communication or the modem 5 for facsimile communication.

(Effects of the Invention) As described above, by using the present invention, it is possible to switch and connect a modem for telex and e-mail communication and a modem for facsimile communication to a telephone line. Since only one telephone line is required, telephone line installation fees and contract fees can be saved, which is extremely effective.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a facsimile apparatus according to the present invention, FIG. 2 is a flow chart for explaining the operation of FIG. 1, and FIG. 3 is a case in which an incoming call is received from a telex or e-mail exchange. A diagram showing an example of the signal flow of
Figure 4 shows the flow of signals when a call is received from a facsimile machine, and Figure 5 shows the signal flow when a call is received from a telex or email exchange when there is a telex or email identification signal. It is a diagram showing a flow. DESCRIPTION OF SYMBOLS 1...Facsimile machine, 2...Call signal detection circuit, 4...Modem for telex and e-mail communication, 5...
... Modem for facsimile communication, 7... Control circuit, 8
...Timer, 11...Switching circuit. ,-1 Facsimile Machine Patent Applicant: Oki Electric Industry Co., Ltd. Block diagram showing one embodiment of the present invention FIG.

Claims (1)

[Scope of Claim] A facsimile device having a modem for facsimile communication and a modem for telex or e-mail communication, comprising: a ringing signal detection circuit for detecting a ringing signal from a telephone line; A facsimile apparatus comprising: a switching circuit for connecting a mail communication modem to the telephone line; and a control circuit for switching the switching circuit under certain conditions after detecting a calling signal.