JPS62171259A - Talking call control system - Google Patents

Abstract

PURPOSE:To attain talking at any time by allowing the communication control section of a data communication equipment to control a network control section and a telephone set without manual switching. CONSTITUTION:In a data communication system connecting data communication equipments 1 and 2 via a public communication network 4, the data communication equipments 1, 2 are provided with a network control section 101 connected to the public communication line 4, a communication control section 104 connected to the network control section 101 via a modulation/demodulation section 103, a telephone set 102 connected to the network control section 101 and the communication control section 104 and a buzzer 106 connected to the communication control section 104, and in sending a talking request text a head the talking when a data communication equipment at the caller side calls the data communication equipment of the called party, the communication control section 104 connects the public communication line 104 to the telephone set 102 at the called party to apply the control raising a buzzer 106.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a call control system, and more particularly to a call control system for calling a called party between telephone-equipped data communication devices using public communication lines.

[Conventional technology]

Conventionally, in data communication systems in which data communication devices with telephones of this type are connected via a public communication network, calls and data communication have been performed by switching a manual changeover switch in a network control unit or the like.

[Problems to be Solved by the Invention] In the conventional data communication system described above, in order to make a call, the call/data communication changeover switch is switched to the calling side in advance by another means, for example, at a set time, and the call/data communication switch is switched to the calling side. Either you have to call the other party using the subscriber line, or you have to call the other party using the subscriber line and then switch the switch. This is because if the switch is set to the data side, the telephone bell will not ring, so called number 1! ! l
is unable to confirm the call.

As described above, the conventional data communication system has the disadvantage that it is not possible to make calls at any time.

[Means for solving problems]

The call control method of the present invention provides a data communication system in which data communication devices are connected via a public communication network, in which each data communication device has a network control unit connected to a public communication line and a modulation/demodulation unit. a communication control unit connected to the network control unit via the network control unit; a telephone set connected to the network control unit and the communication control unit; and a buzzer connected to the communication control unit; When the called party sends a call request text prior to the call when calling the data communication device of the called party, on the called party, the communication control unit connects the public communication line to the telephone and then controls the buzzer to sound. I do.

ε Example] Next, the present invention will be explained with reference to the drawings.

FIG. 1 shows an embodiment of the call control method of the present invention,
(a) is a professional diagram of a data communication system, (1) is a circuit block diagram showing an example of data communication equipment in (a), and Figs. 2 and 3 are respectively the communication output in Fig. 1. Flowchart showing control operation, Time Senya-1
− is.

In FIG. 1(a), the data communication system consists of data communication equipment 1 and 2 connected to an exchange 3 via a public communication line 4, respectively. The data communication equipment 1.2 has the same configuration, and as shown in FIG.
5 and a network control unit (hereinafter referred to as NC) connected to this LN105.
1J) 101 and the modulation/demodulation unit (
Hereinafter, M, "D > 103, and M, /D103.NCU
Communication control unit (hereinafter referred to as CCtJ) 104 connected to IOl
, NCUIOl, telephone connected to CCTJ 104] 02, and a buzzer connected to CCU 104 (hereinafter B)
Z, >106. Note 2. M/'DI03 and c
The interface with the cu 104 is I I S-C-
6361 standard.

Next, the operation of this embodiment will be explained with reference to FIGS. 2 and 3.

On the calling side, the data communication device 1 calls the data communication device 2 of the called side using a generally known automatic dialing method or the like.
CC, tJ 104 of data communication equipment 1 is public communication line 4. When it detects the completion of the connection via AC+1!1 machine 3, it turns on the data ready signal (hereinafter referred to as DR) and sends a call request text from the terminal (hereinafter referred to as 5ND) to M, /'D1
03, N (2 U 10 L, L N I O5
is transmitted to the public communication line 4 and waits for a response text from the data communication device 2. Next, the receiving terminal (hereinafter REC
) sends the response text to LN105. NCU]O],
When it receives M,...,Dl 03, it turns on the remote hook-up signal (hereinafter referred to as R, HS). In the telephone 102, the remote hook switch is a relay contact in parallel with the hook switch.
has the same meaning as off-hook), and then when the DR is turned off, the public communication line 4 is switched by N CUlol and connected to the telephone set 102. When the caller picks up the handset, the hook-up is switched off.・Sochi signal (hereinafter H
S) is turned on and RHS is turned off, but since H3 is turned on, the public communication line 4 is not disconnected.

Communication control by the data communication device 1 is now completed, and the device remains off-duty until the called party picks up.

On the other hand, on the called side, the CCIJ 104 constantly monitors calling indication signals (hereinafter referred to as CI). N
When CI from C1J 101 turns on, CCLi
At step 104, DR is turned on and the text sent from the data communication device 1 is received at R and EC.

The operation up to this point is the same as that of normal data communication. Next, when the received text is recognized as a call requester kiss 1-, the SND transmits a response text. Next, when you turn on the RHS, you will receive a buzzer signal (hereinafter referred to as BZ).
The BZ 106 rings to notify the incoming call request, and then the DR is turned off and the public communication line 4 is switched to the telephone 102 side by NCUlol.

(: The CU 104 monitors the time while the DR is off, and if the caller turns off the DR during the timeout period of this monitoring time, the BZ 106 will stop ringing and the call will be possible. 7. If the tsuku is delayed and times out, the public communication line 4 is disconnected because the RH 3 is turned off.

In addition, in FIG. 1(b), the reference symbol ER is an equipment ready signal, R3 is a request to send signal, and C3 is an equipment ready signal.
represents a clear cent signal, CD represents a carrier detect signal, SG represents a signal guard signal, and DIAL represents a dial signal, but since they are the same as in the conventional CCU, their explanation will be omitted.

〔Effect of the invention〕

As described above, the present invention has the advantage that the communication control section of the data communication device controls the network control section and the telephone set, so that calls can be made at any time without any manual switching.

[Brief explanation of drawings]

FIG. 1 is a process diagram showing an embodiment of the call control method of the present invention, and FIGS. 2 and 3 are flowcharts 1 and 1 showing the call control operation in FIG. 1, respectively.
Char 1. ], 2... Data communication equipment, 3... Exchange, 4...
・Public communication line, 101...Network control unit (NCLI>,
102...Telephone, 103''L 7X key part (M, 'D
> , 1 (1・1... Communication control unit (CC, U)
, 1 (15... line input/output terminal (LN), 10
6...Buzzer (RZ). Figure 1 (Kyu) Giant Figure 3

Claims (1)

[Claims] In a data communication system in which data communication devices are connected via a public communication network, each of the data communication devices is connected to the network control unit via a network control unit connected to a public communication line and a modulation/demodulation unit. a telephone set connected to the network control unit and the communication control unit; and a buzzer connected to the communication control unit, and the calling side data communication device connects the called side data communication device to the called side data communication device. When making a call, when a call request text is sent prior to the call, the communication control unit on the called side connects the public communication line to the telephone and then controls the buzzer to sound. control method.