JPH0265557A - Modem built-in telephone set - Google Patents

Abstract

PURPOSE:To attain voice communication and data communication simultaneously without timewise changeover by accommodating two subscriber lines and providing further the 2nd changeover means. CONSTITUTION:A changeover circuit 9 switches the 1st subscriber line and the 2nd subscriber line whether they are used for voice communication utilizing a receiver 15 and a transmitter 16 or data communication utilizing a MODEM 19. When the 1st subscriber line is used for voice communication, the 2nd subscriber line is used for data communication and when the 1st subscriber line is used for data communication, the 2nd subscriber line is used for voice communication. Thus, outgoing and incoming connection are applied entirely independently the same as the presence of two telephone sets.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a modem-inside R telephone connected to a general subscriber network and a private branch exchange and having a built-in modem used for data communication.

C. Prior Art) Some telephones with a built-in modem of this type are connected to a single subscriber line and perform voice calls and data communications. An example of this type of telephone with a built-in modem is shown in FIG. This conventional telephone with a built-in modem has the functions of automatic call/receive, voice call, and data communication under control from the terminal. In FIG. 2, 101 is an incoming call/polarity reversal detection circuit;
2 is a DC circuit opening/closing circuit, 103 is a ringing circuit,
104 is a dial pulse output path, 105 is a DC circuit switching circuit, 106.107 is a DC circuit, 108.109
110 is a receiver, 111 is a transmitter, 112 is an audible display section, 113 is a modem control switching circuit,
114 is a modem circuit, 115 is an audio amplification circuit, 116 is a button signal sending circuit, 117 is a part of the operation key, 1
18 is a visual display section, 119 is a control circuit, 120 is a selection switch, and 121 is a connector.

Such a conventional telephone with a built-in modem has a connector 121
data communication by a terminal connected to the handset 110. Voice communication using the transmitter 111 is performed by switching the switches 105A and 105B of the switching circuit 105 of the DC circuit.

[Problem to be solved by the invention]

The above-mentioned conventional modem-internal R telephone uses voice calls and data communications in a temporally divided manner, and has the disadvantage that voice calls and data communications cannot be carried out simultaneously.

In addition, when a telephone with a built-in modem is in use, other subscribers can send information to the subscriber using the telephone with a built-in modem, whether the telephone is in use for voice calls or data calls. It also has the disadvantage that it is almost impossible to communicate.

SUMMARY OF THE INVENTION The object of the present invention is to eliminate such drawbacks and to provide a telephone with a built-in modem that can perform voice calls and data communications at the same time, and can transmit information from another caller during a call. be.

[Means to solve the problem]

The present invention provides a telephone with a built-in modem that accommodates two subscriber lines, performs voice calls via a handset, and data communications via a modem circuit, and is connected to each of the two subscriber lines, first and second communication means for making connections for making and receiving calls; first converting means for converting the connected two-line subscriber line into four-line to make it compatible with the handset; a second converting means for converting a two-line subscriber line into a four-line to correspond to the modem circuit; first and second communication means; and the first and second converting means. and when the first communication means is connected to the first conversion means, the second communication means is connected to the second conversion means, or the first communication means is connected to the first conversion means. a first switching means that connects the second communication means to the first conversion means when connected to the second conversion means; and a four-wire side output of the first and second conversion means; a second switching means that is connected between the handset and the handset and connects these two 4-wire side outputs to transfer an incoming call at the time of transfer switching; and between the modem circuit and the second switching means. a notification means that is connected to the first and second communication means, the first and second switching means, and the notification means that receives and notifies an incoming call during a voice call; It is characterized by having a control means for controlling the transfer of telephone calls and data communications, and the notification of termination (i) when the subscriber makes a voice call.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

This telephone with a built-in modem accommodates two subscriber lines, a general subscriber network and a private branch exchange, and has incoming call/polarity reversal detection circuits 1 and 2, DC circuit switching circuits 3 and 4, and a ringer. circuits 5 and 6, dial pulse sending circuits 7 and 8, DC circuit switching circuit 9, DC circuits 10 and 11, and 2
4-wire conversion circuit 12, 13, transfer switching circuit 14, receiver 15, transmitter 16, audible display section 17, modem/control switching circuit 18, modem circuit 19, and audio amplification circuit 20. , a selection switch 21, a button signal sending circuit 22, a voice synthesis circuit 23, and a tone detection circuit 2.
4, an operation key part 25, a visual display part 26, a control circuit 27, and a connector 28.

In this embodiment, the first communication means includes an incoming call/polarity reversal detection circuit 1, an opening/closing circuit 3, a ringing tone circuit 5, and a dial pulse sending circuit 7. The first conversion means includes a reversal detection circuit 2, an opening/closing circuit 4, a ringing tone circuit 6, and a dial pulse sending circuit 8. The conversion means 2 includes a DC circuit 11 and a 2-wire 4-wire conversion circuit 13, and the notification means includes a selection switch 2.
1, a speech synthesis circuit 23, and a tone detection circuit 24.

In a telephone with a built-in modem having such a configuration, the incoming call/polarity reversal detection circuit 1 activates the control circuit when detecting an incoming call on the first subscriber line or when detecting an inversion of the polarity of the first subscriber line. 27 of the detection. The same applies to the incoming call/polarity reversal detection circuit 2 corresponding to the second subscriber line.

When the ringing circuit 5 receives a call from the first subscriber, it outputs a ringing signal corresponding to the signal input via the switching circuit 3 to the audible display section 17. The same applies to the ringing tone circuit 6 corresponding to the second subscriber line.

Under the control of the control circuit 27, the dial pulse output path 7 sends a dial pulse to the first subscriber line via the switching circuit 3 when making a call. The same applies to the dial pulse sending circuit 8 corresponding to the second subscriber line.

The switching circuit 9 includes four switches 9A to 9D, and these four switches 9A to 9 are controlled by the control circuit 27.
Operate D. That is, these four switches 9A
~9D, when the first subscriber line transmits signals with the DC circuit 10, the second subscriber line transmits signals with the DC circuit 11. Further, when the first subscriber line transmits signals with the DC circuit 11, the second subscriber line transmits signals with the DC circuit 10.
and transmit signals.

The 2-wire/4-wire conversion circuit converts between 2-wire and 4-wire, and outputs the signal from the DC circuit 10 to the switch 14A of the transfer switching circuit 14, and at the same time outputs the signal from the switch 14B of the transfer switching circuit 14. is output to the DC circuit 10. 2
The four-wire conversion circuit 13 outputs the signal from the DC circuit 11 to the switch 14C of the transfer switching circuit 14, and at the same time outputs the signal from the switch 140 of the transfer switching circuit 14 to the DC circuit 11.

The transfer switching circuit 14 includes four switches 14A to 14D, and operates these four switches 14A to 14D under the control of the control circuit 27. That is, when the 2-wire 4-wire conversion circuit 12 transmits signals to the receiver 15 and the transmitter 16 via the switches 14A and 14B, respectively,
The four-line conversion circuit 13 transmits signals to the selection switch 21 via switches 14C and 14D.

Further, the 2-wire 4-wire conversion circuit 12 includes switches 14A to 14.
Signals are transmitted to the 2-wire/4-wire conversion circuit 13 via D.

Under the control of the control circuit 27, the selection switch 21 transfers the signal from the switch 14C of the transfer switching circuit 14 to the audio amplification circuit 20. Modem circuit 19. It outputs to one of the tone detection circuits 24. At the same time, the selection switch 21
One of the signals from the voice synthesis circuit 23, the modem circuit 19, and the button signal sending circuit 22 is output to the switch 14D of the transfer switching circuit 14.

When a signal is input from the selection switch 21 , the audio amplification circuit 20 amplifies this signal and outputs it to the audible display section 17 .

The audible display section 17 converts the input signal and outputs an audible sound.

Under the control of the control circuit 27, the modem/control switching circuit 18 connects the terminal connected to the connector 28 to the modem circuit 19 for data communication or to the control circuit 27 for network control.

When a terminal connected to the connector 28 performs data communication with a subscriber line, the modem circuit 19 modulates and demodulates the transmitted signal to realize the communication function of the terminal.

The button signal sending circuit 22 includes a selection switch 21
button (PB) to the caller.
Send a signal.

When selected by the selection switch 21, the speech synthesis circuit 23 notifies the caller that the call is busy and also provides an instruction.

Tone detection episode P! 24 is connected to P via the selection switch 21.
When the B-time signal is input, the PB sent from this calling party
Detect and analyze double signal content.

The operation key part 25 and the visual display part 26 operate as a man-machine interface of the telephone with a built-in modem according to this embodiment.

The control circuit 27 is a central control circuit that controls the operation of the telephone with a built-in modem according to this embodiment, and includes a memory element related to control. That is, the control circuit 27 includes a read/write memory for temporarily storing data, and a read-only memory in which a program defining the operating sequence of the telephone with a built-in modem is written. The control circuit 27 includes the incoming call/polarity reversal detection circuits 1 and 2, the opening/closing circuit 3.4, the dial pulse sending circuits 7 and 8, the switching circuit 9, the transfer switching circuit I4, and the selection switch 2. ,
Bush button signal sending circuit 22 and voice synthesis circuit 23
, tone detection circuit 24, modem circuit 19, modem/control switching circuit 18, operation key section 25, and visual display section 26 according to the sequence of a program written in a built-in read-only memory. Control.

Next, the operation of this embodiment will be explained.

The transfer switching circuit 14 is used when interconnecting the first subscriber line and the second subscriber line, but currently, the transfer switching circuit 14 is used to interconnect the first subscriber line and the second subscriber line, but currently it is used to connect two lines and four lines via switches 14A and 14B. The conversion circuit 12 is connected to the receiver 15. It is connected to the transmitter I6, and the 2-wire/4-wire conversion circuit 13 is connected to the selection switch 21 via switches 14C and 14D. The switching circuit 9 connects the first subscriber line and the second subscriber line to the handset 15 . It is possible to switch between using the transmitter 16 for voice communication and using the modem 19 for data communication. And the first
When one subscriber line is used for voice calls, the second subscriber line is used for data communication, and when the first subscriber line is used for data communication, the second subscriber line is used for voice calls. used for. Therefore, the first subscriber line includes an incoming call/polarity reversal detection circuit I, an opening/closing circuit 3, a ringing circuit 5, a dial pulse output path 7, a DC circuit 1O92 line 4-wire conversion circuit 12 or a DC The second subscriber line has an incoming call/polarity reversal detection circuit 2,
Since it has an opening/closing circuit 4, a ringing circuit 6, a dial pulse sending circuit 8, and a DC circuit 11.2-wire 4-wire conversion circuit 13 or a DC circuit 10.2-wire 4-wire conversion circuit 12, the telephone The outgoing connection is completely independent just like the existing one.

Incoming connections can be made.

By the way, among the subscribers of two lines, for example, when the first subscriber line is in the middle of a voice call, there are times when another caller requests a voice call to the second subscriber line.

When such an incoming call is received, the incoming call/polarity reversal detection circuit 2 detects the incoming call, the second subscriber line is connected to the DC circuit 11, and the call is automatically received. When the caller receiving the call to the second subscriber is using a PB telephone, the voice synthesis circuit 23 operates. Then, via the selection switch 21, the voice synthesis circuit 23 notifies the caller that the call is busy and gives instructions. When the caller responds with a PB double signal in response to this instruction, the signal is input to the tone detection circuit 24 via the PB double signal selection switch 21. The tone detection circuit 24 detects and analyzes the response content of this PB multiplied signal. The analyzed response content is sent to the terminal and displayed or stored. This makes it possible to receive a message from another caller during a call.

Next, the incoming call may be transferred due to the absence of the subscriber. In such a case, switch 1 of the transfer switching circuit 14
4A to 14D interconnect the two-wire and four-wire conversion circuits 12 and 13. Registration of the subscriber's absence and transfer destination registration are inputted from the operation key section 25. Furthermore, by incorporating a program for automatic transfer into the control circuit 27, it can also be used as a transfer telephone.

Note that the output signal from the first subscriber line ringer circuit 5, the output signal from the second subscriber line ringer circuit 6, and the output signal from the audio signal amplification circuit 20 are audible. The display unit 17 is manually operated, and when receiving a call or communicating,
Audible sound is output from the audible display section 17. Also, the modem/control switching circuit 18 determines whether the terminal is connected to the modem circuit 19 for data communication or used for network control. B
Switch whether to connect it to the circuit 27 and use it.

〔Effect of the invention〕

As explained above, since the present invention accommodates two subscriber lines and is further provided with a second switching means, voice calls and data communications can be performed completely independently, and voice calls and data communications can be switched in time. This can be done at the same time without having to switch, and it can also be used as a forwarding phone. Furthermore, since the notification means is provided, the subscriber can receive a message from another caller even during a voice call.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of a conventional telephone with a built-in modem. 1.2... Incoming call/polarity reversal detection circuit 3.4... Opening/closing circuit 5.6... Ringing circuit 7.8... Dial pulse sending circuit 9... Switching circuit 10, 11.・・DC circuit 12, 13 ・・2-wire 4-wire conversion circuit 14 ・Transfer switching circuit 15 ・Handset 16 ・Transmitter 17 ・Audible display part 8 ・Modem/control Switching circuit 19...Modem circuit 20...Audio amplifier circuit 21...Selection switch 22...Bush button signal sending circuit 23...Speech synthesis circuit 24...Tone detection circuit 25...Operation Ki part 26...Visible display part 27...Control circuit

Claims (1)

[Claims] (1) A telephone with a built-in modem that accommodates two subscriber lines, performs voice calls via a handset, and data communications via a modem circuit, which is connected to each of the two subscriber lines and makes a call. first and second communication means for making connections for incoming calls; first conversion means for converting the connected two-line subscriber line into four-line to correspond to the handset; between the first and second communication means and the first and second conversion means; and when the first communication means is connected to the first conversion means, the second communication means is connected to the second conversion means, or the first communication means is connected to the second conversion means. a first switching means that connects the second communication means to the first conversion means when connected to the conversion means; four-wire side outputs of the first and second conversion means; and the handset. are connected between these two 4 at the time of transfer switching.
a second switching means for connecting a line side output and transferring an incoming call; and a notification means connected between the modem circuit and the second switching means for receiving and notifying an incoming call during a voice call; , connected to the first and second communication means, the first and second switching means, and the notification means, and is connected to the first and second communication means, the first and second switching means, and the notification means, and is connected to voice communication, data communication, transfer of incoming calls, and incoming calls during subscriber voice calls. 1. A telephone with a built-in modem, characterized in that it has a control means for controlling notifications of.