JPS63248271A - Communication equipment - Google Patents

Abstract

PURPOSE:To automatically detect a calling from a non-voice terminal and to attain a prescribed system communication by connecting a communication line to the communicating means of the prescribed system to communicate when a prescribed signal to show that a calling station is the non-voice terminal is received. CONSTITUTION:Even when transmitted from a facsimile equipment, the receiving detection is executed by detecting a calling signal with a receiving detecting circuit 3 and by a ringer circuit 19 of respective telephone sets, a bell is made rung. An operator picks up a handset 24 from a hook, and thus, a line control circuit 13 forms a direct current loop and a line is established. When the line is established, the facsimile equipment of an opponent station transmits a CNG signal. When the CNG signal is received, a CML relay 21 is switched to an F side and a transmitting receiving part 11 is connected to lines L1 and L2. Thereafter, the completely same facsimile receiving or transmitting action as the conventional one is executed by a facsimile transmitting receiving part 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication device, and particularly to a communication device in which jti number of terminal devices are connected to a common main device.

[Prior Art] Communication systems configured by connecting a plurality of 1rL telephones to a common main device have been known. When connecting a non-voice terminal such as a facsimile device that performs communication using a predetermined method to such a communication system, conventionally, the facsimile device itself was usually provided with communication control means for line control and call control. .

However, in this configuration, functions such as line control and call control are redundantly provided, which is extremely disadvantageous in terms of cost.

Therefore, configurations have been considered, such as making the main unit that performs line control and call control for multiple telephones and facsimile machines common and integrating it with the facsimile machine, or providing only one main unit independently. There is.

[Problems to be Solved by the Invention] When a system such as the one described above is connected to a single communication line, at the time a paging signal is received, it is difficult to determine whether the call is to a voice terminal or to a facsimile machine. It is not possible to determine what it is. Therefore, in such a system, when a ringing signal is received, the bells of the facsimile machine or telephone ring all at once to prompt the operator to respond, and if the call is made from a telephone, the conversation continues, but the facsimile When making a call from the device, the operator had to perform facsimile communication using manual procedures, such as by listening to a signal tone through the handset.

[Means for Solving the Problems] In order to solve the above problems, in the present invention, communication means for communicating with a plurality of voice terminals in a predetermined manner are communicated via a common main device for line control. Control means is provided for connecting a communication line to the communication means and causing communication in a predetermined method to be performed when a communication device connected to the circuit receives a predetermined signal indicating that one calling station is a non-voice terminal. The configuration was adopted.

[Operation] According to the above configuration, when a call is received from a non-voice terminal, it is automatically detected, and communication can be performed by connecting a communication means of a predetermined method instead of a voice terminal. can.

[Example] The present invention will be described in detail below based on an example shown in one drawing.

FIG. 1 shows the structure of a communication system employing the present invention. In this embodiment, a facsimile is considered as a communication device, and a telephone or a telephone as a voice terminal is connected to the facsimile through a common main device. The main device for line control is integrated inside the facsimile machine.

In FIG. 1, the reference numeral 12 indicates a facsimile machine, and this facsimile machine 12 has a built-in main unit l. The main device 1 includes an incoming call detection circuit 3 connected to subscriber lines Ll and L2, and a dial signal generation circuit 4 for making a call. and CNG indicating that the other station is a non-voice terminal.
It has a CNG signal detection circuit 5 for detecting a signal (calling tone).

The main type AL also has a data transmission control circuit 7 for transmitting and receiving predetermined data such as communication data to and from the telephone 2, and a power supply circuit 8 that supplies power necessary for the operation of the telephone 2. There is. The main device 1 also has a CML relay 21 for switching line connections between the facsimile device and the telephone 2.

The main device 1 described above is controlled by a control section 6 including a microprocessor or the like that controls the operation of the facsimile device 12 as a whole. facsimile? The configuration for facsimile communication of the i-station 12 is exactly the same as the conventional one,
Therefore, it is shown here simply as three blocks. That is, the reading section 9 is composed of a CCD line sensor and the like for reading the original image. A recording unit 1O1 includes a thermal printer used to record received original images, and a transmitting/receiving unit 11 includes circuits for modulating and demodulating procedure signals and image signals, and encoding and decoding image signals.

The control unit 6 performs line-based iJD according to a program to be described later, and the program at that time is stored in the ROM 23. The facsimile device 12 and the telephone 2 are connected to the signal line L3
, L4 and L5. Signal line L
3. L4 is a line for voice communication, and is a line for other telephones 4j1 (
or a facsimile machine).

The signal line L5 is for data communication between the facsimile machine and the telephone, and is also connected in parallel with other telephones (or facsimile machines). Signal line L3. L4 is connected to the line control circuit 13 of the telephone 2.

The line control circuit 13 is connected to the line L1. 0 to switch internal calls between connected phones along with external calls to L2
The line control circuit 13 is connected to a handset 24 configured in exactly the same manner as in the prior art via a telephone line network 14 consisting of a speech network circuit and the like for 1 m.

The operation of the line control circuit 13 is controlled by a control section 17 composed of a microprocessor or the like. This control unit 17 causes a ringer circuit 19 composed of a bell circuit or the like to ring in response to the input of a calling signal, or performs data communication with one unit of the facsimile machine 12, and performs various communication controls. Do the following.

For this control, operation input is performed from the operation unit 18 consisting of a keyboard such as a numeric keypad and function keys, and the data is sent to the main device l via the data transmission control circuit 16, and dialing is performed using speed dialing or one-touch keys. This includes operations such as inputting the telephone number and abbreviation of the other party's station.

Each circuit of the telephone Ij12 is operated by power supplied from the main device 1 side. One power supply circuit 15 supplies the power supply voltage supplied from the 1 side to each part 6 In the configuration shown in FIG. 1, when making a call from the telephone a2, since the telephone 2 does not have a calling means, The telephone number input on the operation unit 18 is transferred to the main device 1 side, and the first unit 2TL generates a dial signal of a predetermined method such as a dial tone or dial pulse using the dial signal generation circuit 4 based on the transferred telephone number data. The signal is generated and transmitted to the first line Ll and L2.

On the other hand, the calling signal is from line L1. When the call signal is input from L2, the incoming call detection circuit 3 on the main device L side detects this call signal, and based on this detection, the control unit 6 sends data to the telephone f.
Command i2 to ring the ringer circuit 19. When the operator makes a call, by removing the handset 24 from the hook, a DC loop is formed by the line control circuit 13, and the handset 24 and the lines L1 and L2 are connected.

Next, referring to FIG. 2, a description will be given of the processing when the calling station is a facsimile machine. FIG. 2 shows the control procedure of the control unit 6 stored in the ROM 23.

Even if the call is from a facsimile machine, incoming call detection is performed by detecting the ringing signal with the incoming call detection circuit 3.
In step Sl, the ringer circuit 19 of each telephone rings the bell in the same manner as described above. In the initial state, the CML relay 21 is connected to the T side in the figure.

Next, in step S2, when the operator lifts the handset 24 from the hook, the line control circuit 13 forms a DC loop and the line is established.

Once the line is established, the other party's facsimile machine is a CNG
It sends a signal. The CNG signal is a 1100 Hz audio signal that is transmitted for 0.5 seconds every 3 seconds with a calling tone indicating that one calling station is a non-voice terminal as specified by the CCITT recommendations.

This CNG signal is detected by a CNG signal detection circuit. The control unit 6 determines this detection result in step S3 of FIG. Then, if the CNG signal is being received, the process moves to step S4, and if the CNG signal is not being received, the process moves to step S5.

In step S4, the CML relay 21 is switched to the F side in the figure, and the transmitter/receiver 11 is connected to the lines LL and L2. Thereafter, the facsimile transmitting/receiving section 11 performs facsimile reception or transmission operations in exactly the same manner as in the prior art.

After the CML relay 21 is switched, the line connection is maintained by the facsimile transmitting/receiving section 1, so the on-footer or off-book on the telephone 2 side becomes irrelevant to the communication operation.

According to the configuration described above, when the calling station is a facsimile machine, there is no need to control facsimile communication through cumbersome manual procedures, and the facsimile communication is automatically executed when the line is established and the CNG signal is input. A facsimile machine is connected to the line, and facsimile communications are subsequently performed through automatic procedures.

In the above procedure, the operator has to control the incoming call by going off-hook, but it is possible to automate this.For example, when an incoming call is received, a DC loop is automatically formed by means such as a coil, and then Predetermined time C
If the NG signal is not received and the CNG signal is not received, the ringer circuit on the telephone 2 side is operated for the first time to call the operator. According to this configuration, in the case of facsimile communication, the operator There is no need to raise the hook.

In the above, a facsimile device has been exemplified as a communication device that is connected to a line together with a telephone, but the present invention is not limited to a facsimile device, and it is also possible to connect data communication devices of other types to the line together with a telephone.

[Effects of the Invention] As is clear from the above description, according to the present invention, communication means for communicating with a plurality of voice terminals in a predetermined manner are connected to a communication circuit via a common main device for line control. The communication device employs a configuration including a control means that connects a communication line to the communication means to perform communication in a predetermined method when a predetermined signal indicating that the calling station is a non-voice terminal is received. To provide an excellent communication device that can automatically detect a call from a non-voice terminal and perform communication using a predetermined method without requiring troublesome operations by an operator. Can be done.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the structure of a communication system employing the present invention, and FIG. 2 is a flowchart showing the control procedure of the control section 6 of FIG. 1. l...Main device 2...Telephone 3...Call detection circuit 5...CNG signal detection circuit 6.17...
・Special g11 part

Claims (1)

[Claims] A predetermined signal indicating that a calling station is a non-voice terminal in a communication device in which communication means for communicating with multiple voice terminals in a predetermined manner is connected to a communication circuit via a common main device for line control. 1. A communication device comprising: a control means for connecting a communication line to the communication means to perform communication using a predetermined method when the communication means receives the communication means.