JPH01288052A - Data communication equipment - Google Patents

Abstract

PURPOSE:To select automatically data communication and voice communication even in a data communication equipment connected to a prescribed data communication network such as a facsimile communication network by generating a call tone when a detection means does not detect an object signal so as to attain voice communication. CONSTITUTION:A means detecting the reception of a signal representing an opposite station to be a nonvoice terminal equipment and a means detecting the reception of a call signal from a line network for exclusive use of data communication are provided, and when any of each detection means detects an object signal, data communication is attained and when each detection means detects no object signal, a call tone is generated to conduct voice communication. That is, when an opposite station receives a CNG signal representing a nonvoice terminal set or a FC signal being a call signal from a facsimile communication network, the automatic reception of a facsimile equipment is applied and in other case, the opposite station is discriminated to be a voice terminal set to apply conventional telephone incoming call processing. Thus, proper communication mode is always selected according to the property of the opposite station.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a data communication device, particularly a data communication device that is connected to a terminal of a telephone line, has a voice communication section and a data communication section, and performs voice communication via the telephone line. The present invention also relates to a data communication device that connects to a predetermined data communication network via a telephone line and performs predetermined data communication.

[Prior Art] Facsimile devices that are connected to a telephone line terminal and transmit and receive image data using analog modulation have been known. As reception modes of such devices, automatic reception mode and manual reception mode are known. The difference between automatic reception and manual reception in each mode lies in whether the call is received using a telephone built into the device or connected to the line together with the device. That is, in the automatic reception mode, the circuit of the facsimile device is connected to the telephone line and attempts to receive image data. - Method 1: In the case of manual reception, the incoming call is always made by the telephone, if the other party's station is a voice terminal, the call continues as is, and in the case of image communication, the signal tone of the other party's station is checked, etc. The line is switched to the facsimile machine side by operating a predetermined switch.

[Problems to be Solved by the Invention] Conventionally, only two reception modes, the above automatic reception mode and manual reception mode, could be selected, which caused the following problems.

First, if you set the automatic reception mode, it will automatically attempt to receive a fax even if the other party is calling from a telephone, which may result in sending an unpleasant fax signal to the caller. In this case, it is not possible to make a phone call.

On the other hand, if the manual reception mode is set, there will be no problem if a call is made from a telephone, but even if a call is received from a facsimile machine, the operator will always answer and perform the specified operations. Therefore, facsimile reception cannot be performed unless the operator is near the device, and if manual reception mode is set during an unattended period such as at night, facsimile reception cannot be performed at all. .

In view of the above problems, conventionally, when receiving a CNG signal (a calling tone indicating that the calling station is a non-voice terminal: a 1100Hz tone signal of 0 and 5 seconds repeated every 3 seconds), etc. A device has been proposed that automatically receives a facsimile and, in other cases, rings the bell of the telephone to allow the telephone to receive a call. According to such a configuration, it is possible to automatically detect a call from a facsimile device and use one line for telephone calls and facsimile communications.

On the other hand, in recent years, services for storing and exchanging image data via facsimile communication networks have been started. Even in image communication using a facsimile communication network, a facsimile device can be connected to the facsimile communication network via a telephone line. An exchange in a facsimile communication network stores image data received via a telephone line, and then transmits the stored image data to a receiving station. In communication using such a facsimile communication network, a normal telephone network call signal or CNG signal is not sent to the receiving station, but an FC signal (facsimile call signal: 1300H2, tone signal with a maximum length of 10 seconds) is sent. be done. Therefore, in the above-described control for automatic facsimile reception based on the detection of a CNG signal, there is a problem in that it is not possible to switch between automatic reception and manual reception.

The above problems are not limited to facsimile machines, but are common to telephone line networks and devices connected to a predetermined data communication network via telephone lines.

An object of the present invention is to solve the above problems and to enable a data communication device connected to a predetermined data communication network such as a facsimile communication network to automatically select data communication or voice communication.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a device that is connected to a terminal of a telephone line, has a voice communication section and a data communication section, and performs voice communication via the telephone line. In addition, in a data communication device that connects to a predetermined data communication network via a telephone line and performs predetermined data communication, means for detecting reception of a signal indicating that the other party is a non-voice terminal, and a means for detecting reception of a signal indicating that the other party is a non-voice terminal, means for detecting reception of a paging signal from the line network, and if any of the detection means detects the target signal, the data communication is performed, and each of the detection means detects the target signal. We adopted a configuration that generates a ring tone and allows voice communication to occur if it is not detected.

[Function] According to the above configuration, not only a signal sent via the telephone network indicating that the other party is a non-voice terminal, but also a paging signal from the data communication network is detected and data communication or You can appropriately choose whether to use voice communication.

[Example] Hereinafter, the present invention will be described in detail based on an example shown in the drawings. In the following, a facsimile device that has a handset for telephone calls and performs both voice communication and facsimile communication will be exemplified.

In FIG. 1, the reference numeral 9 is a CPU composed of a microprocessor, etc., and this CPU 9 is connected to a system bus B consisting of an address bus, a data bus, etc.
control each part of the device connected to the , and perform image communication.
Each part of the device will be explained below.

First, reference numeral 3 denotes an NCU (network control unit), which switches the line connection between the handset 2 for telephone calls and line control and the facsimile machine after the modem 4, and maintains the line loop. A circuit that detects a calling signal (CI) from a telephone network, an FC signal which is a calling signal from a facsimile communication network, and a CNG signal transmitted when the device receives a call from a facsimile machine via the telephone network. Detection results of these signals are reported to the CPU 9 via the system bus B. handset 2
is connected to the NCU 3 via a speech network circuit or the like.

The modem 4 performs analog modulation and demodulation of image signals and procedure signals, and has a known configuration.

Document recording and reading are performed by printer 6 and scanner 5. The printer 6 is composed of a thermal printer, etc., and the scanner 5 is composed of a CCD line sensor, a document conveyance system, etc.

Communication operations are controlled via the keyboard 7.

The operation panel is provided with a keyboard 7 consisting of a numeric keypad for inputting telephone numbers, various functions, and keys. The keyboard 7 is also provided with a one-touch key for making a call to a partner station by operating one key.

Additionally, a CRT display 8 is connected to the system bus B for use in displaying communication status, speed dial telephone numbers set in the device, telephone numbers registered in one-touch keys, time display, and other data. .

This display 8 is interfaced with the operator through zero or more keyboards 7 and a CRT display 8, which may be constructed from an LCD panel or the like having a display area of one to several lines.

Two memories indicated by reference numerals 9a and 9b are connected to the CPU 9. The ROM 9a is used to store a control program to be described later. The RAM 9b is used as an image memory and a work area for the control section 1.

Further, in this embodiment, an FM sound source 11 and a speaker 12 for generating audio signals such as hold tone and ring tone are connected to the system bus B. The FM sound source 11 is composed of a known dedicated LSI or the like.

A telephone line 1 is connected to the NCU 3 in FIG. Also,
It is assumed that a user of the apparatus shown in FIG. 1 has a contract for facsimile communication using a facsimile communication network, and can connect to the facsimile communication network via a telephone line l. Therefore, the device shown in FIG. 1 is capable of making telephone calls via the telephone line, and in terms of facsimile communication, it can also receive facsimile messages via the telephone line, and connect to the facsimile communication network via the telephone line 1. You can send and receive facsimile using .

Next, the operation in the above configuration will be explained. Second
The figure shows that a received signal is detected by the C stored in the ROM 9a in Figure 1. When a calling signal from a telephone network or an FC signal from a facsimile communication network is received, the CPU is notified of the reception of these signals, and then steps are performed. NCU in S2
After performing predetermined response processing such as switching the modem 3 to the modem 4 side, a reception signal detection routine in steps S3 and S4 is performed.

First, in step S3, the signal received from the other party is CNG.
Detect whether there is a signal. If the CNG signal is being received, go to step S8; if not, go to step S
Move on to 4. In step s4, it is detected whether the received signal is an FC signal. If the FC signal is received, step S8
If it has not been received, the process moves to step S5.

If the call is made from a facsimile machine via a normal telephone network, a CNG signal is received, so the process goes to step S8.If the call is made from a facsimile communication network, an FC signal is received, so the process goes to step S8. Move to.

In step S8, facsimile reception is performed using the same procedure as in the past.
The line connection of the CU 3 continues as is, and the modem 4 receives and demodulates the procedure signal and image signal.

On the other hand, if both steps S3 and S4 are negative, that is, if neither the CNG signal nor the FC signal is received, the FM sound source 11 is controlled to generate a ringing sound signal in step S5, and the speaker 12. This generates a ringing sound similar to a normal telephone.

Here, in step S6, the operator
When you answer by going off-hook, you can make a call in the same way as a normal telephone in step S7. In this case, the line connection is from the NCU.
3 to the speech network circuit connected to the handset 2.

Note that when making a call, in the case of voice communication, the connection between the speech network and the line is established by detecting that the handset 2 is off-hook, while in the case of facsimile communication, a connection is made by pressing the start key on the keyboard 7, etc. By operating a predetermined key, the NCU 3 is switched to the modem 4 side, and images are transmitted in the same manner as known procedures.

According to the embodiments described above, in a device where there is a possibility that a call is made from a telephone or facsimile device or a call is made from a facsimile communication network via the telephone @ line, the other party is a non-voice terminal. F, which is a CNG signal indicating that there is a
If a C signal is received, the facsimile will be automatically received.
In other cases, it is determined that the other party is a voice terminal, and normal incoming call processing is performed.

Therefore, even if a call is made from a facsimile device via a facsimile communication network or a telephone network, automatic facsimile reception can be performed reliably. Therefore, you can reliably select between automatic facsimile reception and manual reception (call mode) using the telephone, and there is no possibility that facsimile communication will become impossible or that you will not be able to make calls as in the past. This configuration is very effective especially when one telephone line is used for facsimile communication and telephone calls.

Although the above example has been exemplified as a device in which the functions of a facsimile device and a telephone are integrated, it goes without saying that the same technique can be implemented even if the telephone and facsimile device are separate devices.

Furthermore, the technology of the present invention is not limited to facsimile machines, but can also be implemented in data communication devices that transmit and receive character data and other data. In that case, when detecting a paging signal from the data communication network, the paging signal from the communication network is detected instead of the FC signal.

[Effects of the Invention] As is clear from the above, the present invention is connected to a terminal of a telephone line, has a voice communication section and a data communication section, and performs voice communication via the telephone line. In a data communication device that performs predetermined data communication by connecting to a predetermined data communication network via means for detecting reception of a calling signal, and if any of the detection means detects the target signal, the data communication is performed, and none of the detection means detects the target signal. Since the system uses a configuration that generates a ring tone and performs voice communication, it is possible to receive not only a signal sent via the telephone network indicating that the other party is a non-voice terminal, but also a call from the data communication network. Since the signal can be detected and data communication or voice communication can be selected, an inappropriate communication mode will not be selected as in the past.
An excellent effect is that an appropriate communication mode can always be selected according to the characteristics of the other station.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a data communication device employing the present invention, and FIG. 2 is a flowchart showing a control procedure of the CPU of FIG. 1. l...Telephone line 2...Handset 3...N
CU 4...Modem 5...Scanner 6.
...Printer 7...Keyboard 8...CRT display 9...CPU 11...FM sound source 1
2...Speaker chestnut 2 diagram

Claims (1)

[Claims] 1) Connects to a terminal of a telephone line, has a voice communication section and a data communication section, performs voice communication via the telephone line, and connects to a specified data communication network via the telephone line to perform specified data communication. In a data communication device that performs If any of the detection means detects a target signal, the data communication is performed, and if none of the detection means detects the target signal, a ring tone is generated and voice communication is performed. data communication equipment.