JPS63236442A - Communication equipment - Google Patents

Abstract

PURPOSE:To perform automatic incoming in spite of the communication system of an opponent, by discriminating the communication system from reception data, and selecting a communication control part and a modem corresponding to the communication system. CONSTITUTION:Firstly, a call issuing side, in the case of transmitting data with the communication system recommended by the Ministry of Posts and Telecommunications, sends fixed control data called as a CST signal. Then, a communication system discriminating part 18, in the case of detecting the CST signal via an incoming detecting part 15, switches switching parts 12a-12c so as to connect the communication control part 13a and the modem 14a to a line. In such a way, it is possible to receive the incoming call of the transmission data of the call issuing side by the above mentioned system automatically. Also, when the call issuing side transmits the data with a BSC procedure, the fixed data called as a polling signal is transmitted. Then, similarly the discriminating part 18, in the case of detecting the polling signal, connects the communication control part 13b and the modem 14b to the line, then, the automatic incoming can be performed. Also, the discriminating part 18, in the case of detecting neither, connects a handset 16 and a telephone control part 17 to the line, which forms a speech path.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a communication device that performs data communication with other communication devices such as a host computer and a perfk-j computer via the same line.

2. Description of the Related Art Conventionally, as shown in FIG. 2, this type of communication device performs communication control processing such as transmission control and error control on transmission data and reception data from a transmission request processing unit 1 according to a predetermined communication method. It is generally composed of a communication control unit 2 that executes the above, and a modulation/demodulation device 3 that modulates the data sent from the communication control unit 2 according to the communication method and demodulates the data received from the line via the incoming call detection unit 4. has been done.

Further, as shown in FIG. 3, another conventional communication device is provided with communication control units 2a, 2b and modulation/demodulation devices 3a, 3b of different communication methods, respectively, and has changeover switches SW, .
The switch is configured to be manually switched to connect the communication control unit and modem of a desired communication method to the line, and to perform data communication with the other party using a different communication method.

Problems to be Solved by the Invention However, since the former communication device is composed of a communication control unit 2 and a modem device 3 of one communication method, the other party with which data communication can be performed is limited. There is.

On the other hand, although the latter communication device solves the above problem, it has the problem that it cannot automatically receive a call because the communication method is selected by manually switching the changeover switches SW5 and SW2.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a communication device that can automatically receive a call regardless of the communication method of the other party.

Means for Solving the Problems In order to solve the above problems, the present invention determines the communication method based on the received data, selects the communication control unit and modem device corresponding to the determined communication method, and connects the line to the communication method. It is characterized by being configured to connect.

Effect of the Invention With the above configuration, the present invention can automatically receive a call regardless of the communication method of the other party because the communication method is determined based on the received data.

EXAMPLES Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic block diagram showing an embodiment of a communication device according to the present invention.

In FIG. 1, reference numeral 11 denotes a call request processing unit for inputting and outputting transmitted/received data and processing a call request input in the case of a call, and 12 a , 12 b , and 12 c respectively correspond to the other party's side as described later. This is a switching unit that can be switched depending on the communication method with.

13a is a communication control unit that performs communication control processing using, for example, a communication system recommended by the Ministry of Posts and Telecommunications, and 13b is a communication control unit that performs communication control processing using, for example, a BSO procedure communication method.

14a and 14b are communication control units 13a and 13b, respectively.
It modulates the transmission data output from the line via the switching unit 12b according to the communication method, and also modulates the transmission data output from the line via the switching unit 12b.
6. A modulation/demodulation device that demodulates data received via the switching unit 12c.

15 is an incoming call detection unit that detects incoming calls from the line; 16;
17 is a telephone controller for forming a communication path between the handset 16 and the telephone of the other party, and 18 is a telephone controller for communicating with the other party, as will be described later. This is a communication method determining unit that switches the switching units 12a, 12b, and 12c accordingly.

Next, the operation of the embodiment according to the above configuration will be explained.

First, when the calling side sends data using the communication method recommended by the Ministry of Posts and Telecommunications, it sends fixed control data called an O8T signal.

Therefore, when the communication system determination unit 18 detects this O8T signal via the incoming call detection unit 15, the communication system determination unit 18 switches the switching unit 12a so that the communication control unit 13a and the modem 14a are connected to the line.
, 12b, and 12C.

The received data is demodulated by the modulation/demodulation device 14a and controlled by the communication control unit 13a. Therefore, this communication device can automatically receive data transmitted by the calling party using the communication method recommended by the Ministry of Posts and Telecommunications. Calling party is BSC
When transmitting data in a sequential manner, fixed control data called a polling signal is sent out.

Therefore, when the communication system determination unit 18 detects this polling signal via the incoming call detection unit 15, the communication control unit 13b
and the modem 14b are connected to the line.
Switch between 2a, 12b, and 12C.

The received data is demodulated by the modulation/demodulation device 14b and controlled by the communication control unit 13b. Therefore, this communication device can automatically receive data transmitted by the calling side in the ESC procedure.

If neither the C8T signal nor the polling signal is detected, the communication method determining unit 18 determines that the call is made by a telephone, and switches the switching unit so that the handset 16 and the telephone control unit 17 are connected to the line. 12a, 12b, and 12e are switched.

The telephone control unit 17 generates a ringing signal and sounds a ringing tone, and when the handset 16 is taken off-hook, a communication path with the calling side telephone is established.

Incidentally, in the case of this incoming call, since the calling side telephone is charged, it is desirable to make a ring tone for a predetermined period of time and disconnect the line if the handset 16 is not off-hook.

Therefore, according to the above embodiment, it is possible to automatically receive a call using the communication method recommended by the Ministry of Posts and Telecommunications and the communication method using the BSO procedure.

Next, the operation when making a call will be explained. In this case, the calling party selects the communication method via an input unit (not shown).

When the selected communication method is input to the call request processing section 11, the communication method determination section 18 switches the switching sections 12a, 12b, and 12c according to the selected communication method.

Therefore, the transmission data from the transmission request processing section 11 is
The signal is output to the communication control unit via the switching unit 12a, is controlled by the communication control unit, is output to the modulation/demodulation device via the switching unit 12b, is modulated by the modulation/demodulation device, and is sent to the switching unit 12c and the incoming call detection unit 15. Sent to the intermediary line.

Although the above embodiment is configured to automatically receive calls using the communication method recommended by the Ministry of Posts and Telecommunications and the communication method using the BSO procedure, the communication control unit and the modulation/demodulation device are provided, Of course, by determining predetermined control data of the communication system, it is possible to automatically receive data of other communication systems.

Further, even if the communication systems are different, if a modulation/demodulation device can be used in common, the modulation/demodulation device can be omitted, and an inexpensive communication device can be realized.

As described in detail, the present invention is configured to determine the communication method based on received data, select the communication control unit and modem device corresponding to the determined communication method, and connect to the line. , it is possible to automatically receive calls regardless of the communication method of the other party.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram showing an embodiment of a communication device according to the present invention, FIG. 2 is a schematic block diagram showing a conventional example,
FIG. 3 is a schematic block diagram showing another conventional example. 12a, 12b, 12C... switching section, 13a, 13b
... Communication control unit, 14a, 14b... Modulation and demodulation device,
18... Name of communications system agent Patent attorney Satoshi Nakao and one other person Figure 2

Claims (1)

[Claims] a plurality of communication control units each using a different communication method; a plurality of modulation/demodulators each modulating transmission data of the communication method and demodulating received data; means for determining the communication method based on the received data; A communication device comprising a control section and a communication control section corresponding to a communication method determined by the discriminating means from a modem and a modem, and means for selecting a modem and connecting the modem to a line.