JPH05300274A - Terminal adaptor with recording function - Google Patents

Abstract

PURPOSE:To record signals from a facsimile equipment and a telephone set when they are not connected with respect to the adaptor of an existing terminal equipment to an ISDN. CONSTITUTION:A FAX/telephone relevant signal generating section 5 is provided to the adaptor and the connection between a facsimile equipment of an ISDN side and a facsimile equipment of a terminal adaptor 7 is simulated by a simulating FAX connection function. The connection between a telephone set of the ISDN side and the telephone set at the terminal adaptor 7 is simulated by the simulated telephone connection function, a TA control section 6 is provided to validate the simulated FAX connection function or the simulated telephone connection function based on the arrival of a facsimile signal or a telephone signal from the ISDN in response to the setting of the non-connection state of the existing terminal equipment. When the facsimile equipment or the telephone set is not connected to the terminal adaptor 7 connecting the existing terminal equipment to the ISDN, the facsimile signal or the telephone signal from the ISDN is received in response to the setting by the TA control section 6 to record it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adapter for using an existing terminal for data communication with ISDN, and in particular, when a telephone signal or a facsimile signal is not received, it is possible to receive and store these signals. The present invention relates to a terminal adapter with a recording function.

When a terminal for data communication which has been manufactured and used not for ISDN, such as a personal computer or a workstation, is used for ISDN, an external interface for communication which these terminals have is used. A terminal adapter (TA) is used to convert to the one for ISDN.

When such an existing data communication terminal does not have a function of receiving a telephone signal or a facsimile signal, the terminal adapter to which they are connected records these signals to reproduce and receive them later. It would be convenient if possible.

[0004]

2. Description of the Related Art ISDN line interface, data interface (data port), analog standard telephone interface (analog port) as a terminal adapter for connecting a data communication terminal such as a personal computer or workstation to an ISDN line. A normal terminal adapter with is used.

FIG. 3 shows a configuration of a conventional terminal adapter, showing only an analog interface part, 1 is a codec for converting an analog signal to a digital signal and 2 is a codec. An existing analog interface section for converting the analog interface of the existing terminal and the D channel protocol of the ISDN network, 3 is a ringer signal generating section for sending a ringer signal to the terminal, and 4 is for sending a ringer signal. Is a switching unit.

The codec 1 has a digital side input terminal D _{in and an} output terminal D _out connected to the exchange side via an S / T point interface control section (not shown), and has an analog side input terminal A _{in and an} output terminal A _out existing analog. By being connected to the interface unit 2, the digital signal in the ISDN line and the analog signal on the terminal side are mutually converted.

The existing analog interface section 2 has an analog port for connecting a facsimile machine and a telephone, and has an existing analog standard telephone interface and ISD.
By converting the D channel protocol of the N network, the facsimile device or telephone connected to the analog port is connected to the ISDN network via the codec 1. The ringer signal generator 3 sends various signals such as a ringing signal to the telephone or the facsimile machine via the switch 4 which is switched according to the control information given by the D channel.

[0008]

In the conventional terminal adapter as shown in FIG. 3, when a telephone is connected to the analog port and a facsimile signal is transmitted, this signal is received. I can't.

When sending a facsimile there, the telephone is confirmed in advance by a telephone to confirm that there is a facsimile device, and then the facsimile is sent. If you cannot send a fax, call again and ask to connect the fax machine. It was often troublesome twice, such as.

Further, in such a conventional terminal adapter, when the telephone is not connected to the analog port, naturally there is a problem that the telephone signal cannot be received.

The present invention is intended to solve such a problem of the prior art, and in the terminal adapter for connecting the existing terminal to the ISDN network, when the facsimile machine or the telephone is not connected, the ISDN network is connected. The purpose is to enable recording and reception of facsimile signals and telephone signals from.

[0012]

According to the present invention, as shown in the principle structure of FIG. 1, the existing terminal is converted by converting the analog interface function of the existing terminal and the D channel protocol of the ISDN network. In the terminal adapter 7 for connecting the ISDN to the ISDN network, the FAX / telephone corresponding signal generation unit 5 is provided, and the ISDN has
The pseudo telephone connection function simulates the connection between the facsimile machine connected via the network and the facsimile machine connected to the terminal adapter 7, and is connected to the telephone and the terminal adapter 7 connected via the ISDN network. Simulates a connection with a telephone. Further, when the TA control unit 6 is provided to set the unconnected state of the existing terminal, the IS
The pseudo-fax connection function or the pseudo-phone connection function is validated by receiving a facsimile signal or a telephone signal from the DN network. Thus, when the facsimile device or the telephone is not connected to the terminal adapter 7, the facsimile signal or the telephone signal from the ISDN network can be received and recorded according to the setting in the TA control unit 6.

Further, according to the present invention, in this case, when the TA controller 6 sets the unconnected state of the existing terminal, the FAX
/ Enables the pseudo FAX connection function and the pseudo phone connection function in the telephone corresponding signal generation unit 5. By this, I
A facsimile signal from the SDN network and a telephone signal are mixed and can be recorded.

[0014]

[Function] In the FAX / telephone correspondence signal generation unit 5, the pseudo FA
By the X connection function, a connection signal is transmitted / received to / from a facsimile machine connected via the ISDN network, and a connection operation when the facsimile machine is connected to the terminal adapter 7 is simulated. Also, by the pseudo telephone connection function,
A signal for connection is transmitted / received to / from a telephone connected through the ISDN network to simulate a connection operation when the telephone is connected to the terminal adapter 7.

In the TA control unit 6, when it is set that the existing terminal is in the unconnected state, the pseudo FAX connection function is made effective by receiving a facsimile signal from the ISDN network, or a telephone signal is received from the ISDN network. Enable the pseudo-phone connection function by.

As a result, a facsimile signal or a telephone signal from the ISDN network can be recorded in the tape recorder device according to the setting in the TA control unit 6, and the facsimile device can be recorded in the terminal adapter 7 by reproducing it. Alternatively, a facsimile signal or a telephone signal can be received even when the telephone is not connected.

In this case, when the TA control unit 6 sets the unconnected state of the existing terminal, both the pseudo FAX connection function and the pseudo phone connection function in the FAX / telephone correspondence signal generation unit 5 are enabled. You can As a result, the facsimile signal and the telephone signal from the ISDN network can be mixed and recorded.

[0018]

2 shows an embodiment of the present invention, in which the same elements as those in FIG. 3 are designated by the same reference numerals. Reference numeral 5 denotes a FAX / telephone compatible signal generator, which is an IS
It has a function of transmitting and receiving a connection signal corresponding to the facsimile device and the telephone set to and from the DN line side and simulating the connection with these.

Reference numeral 6 denotes a TA control unit which, when it is set that the existing terminal is not connected, determines that the incoming signal from the ISDN line side is a facsimile signal or a telephone signal, and sends a fax / telephone signal. The pseudo connection function with the facsimile or the telephone in the telephone corresponding signal generator 5 is enabled.

FAX / telephone compatible signal generator 5 and TA
The control unit 6 constitutes the terminal adapter 7 together with the portion shown in FIG. Reference numeral 8 is an existing tape recorder device provided outside the terminal adapter 7.

Further, in the FAX / telephone correspondence signal generation section 5, 9 is a timing control section for controlling the timing of generation of each control signal in the pseudo connection function of the FAX / telephone correspondence signal generation section 5 with a facsimile machine or a telephone.
Is a signal generator for generating each control signal in the FAX / telephone corresponding signal generator 5. A1 to A4 are amplifiers, T1 and T2 are transformers, and R1 to R4 are resistors.

In the existing analog interface unit 2, when the facsimile device or the telephone is not connected to the analog port, the TA control unit 6 is set to that effect.
Now, when a facsimile signal arrives from the ISDN line side, the TA control unit 6 detects from the analog signal output of the codec 1 that it is a facsimile signal, and the FAX signal is received.
/ Makes the telephone-compatible switching signal into the FAX state and outputs it.

As a result, in the FAX / telephone correspondence signal generation unit 5, the signal generation unit 10 generates a response signal and sends it through the resistor R1 and the amplifier A3. This signal is returned to the ISDN line side via the codec 1.

After that, since a connection signal between the facsimiles is sent from the facsimile machine of the other party through the exchange, the FAX / telephone correspondence signal generating section 5 is controlled at a predetermined timing based on the control of the timing control section 9. A signal corresponding to the connection signal from the partner facsimile machine is sent from the signal generator 10. This signal is sent to the facsimile machine of the other party through the same route as the response signal, and the processing for connecting the facsimile is performed in a pseudo manner, so that the facsimile machine of the other party sends the facsimile data.

The connection signal from the partner facsimile machine and the subsequent facsimile data are supplied to the amplifier A2 and the transformer T provided on the analog output side of the codec 1.
After 2 the data is recorded by the tape recorder device 8.

When a facsimile machine is connected to the analog port of the existing analog interface section 2, the tape recorder 8 reproduces the recorded data and outputs it through the transformer T1 and the amplifier A1. Since it is sent from the amplifier A4 to the facsimile machine via the existing analog interface unit 2, the facsimile machine can output and receive it as an image.

Further, when a telephone signal is received from the ISDN line side, the TA control unit 6 detects from the analog signal output of the codec 1 that it is a telephone signal and outputs a FAX / telephone correspondence switching signal to the telephone state and outputs it. To do.

As a result, in the FAX / telephone correspondence signal generation unit 5, the signal generation unit 10 generates a response signal and sends it through the resistor R1 and the amplifier A3, and thereafter, a message is further sent from the signal generation unit 10 to the same route. To send.

As a result, a message is sent from the partner telephone, and the analog signal output of the codec 1 is recorded by the tape recorder device 8 via the amplifier A2 and the transformer T2.

When a telephone is connected to the analog port of the existing analog interface section 2, the tape recorder 8 reproduces the recorded data and the transformer T1
And output through the amplifier A1. This signal is
4 and the amplifier A4 to the telephone via the existing analog interface unit 2, so that the subscriber can hear this. Alternatively, the tape recorder device 8 can directly reproduce and listen.

In the embodiment shown in FIG. 2, the tape recorder device 8 may be built in the terminal adapter 7 instead of being provided outside the terminal adapter 7. Further, by setting the FAX / telephone correspondence switching signal to both the FAX state and the telephone state in the TA control unit 6, it is possible to record the telephone signal and the facsimile signal in a mixed state.

[0032]

As described above, according to the present invention, in the terminal adapter for using the existing terminal for data communication in ISDN, by adding one connection interface, the facsimile machine or the telephone set can be added to the analog port. When a fax signal or a telephone signal is sent from the ISDN line side when the is not connected, the procedure of pseudo incoming call of the fax is performed to record the fax signal, and the procedure of sending a message for recording is performed. Since it is possible to go and record telephone signals, these signals can be received at any time without making them unreceivable.

[Brief description of drawings]

FIG. 1 is a diagram showing a principle configuration of the present invention.

FIG. 2 is a diagram showing an embodiment of the present invention.

FIG. 3 is a diagram showing a configuration of a conventional terminal adapter.

[Explanation of symbols]

 5 FAX / telephone compatible signal generator 6 TA controller 7 Terminal adapter

Claims (2)

[Claims] 1. A terminal adapter (7) for converting an analog interface function of an existing terminal and a D channel protocol of the ISDN network to connect the existing terminal to the ISDN network, which is connected via the ISDN network. Pseudo fax connection function for simulating the connection between the facsimile machine and the facsimile machine connected to the terminal adapter (7), and ISD
Telephone connected to the N network and the terminal adapter (7)
FAX / telephone corresponding signal generation unit (5) having a pseudo telephone connection function for simulating a connection with a telephone connected to the terminal, and a facsimile signal from the ISDN network when the unconnected state of the existing terminal is set. Alternatively, a TA control unit (6) for enabling the pseudo FAX connection function or the pseudo telephone connection function by receiving a telephone signal is provided, and when the facsimile device or the telephone is not connected to the terminal adapter (7), the TA control unit is provided. A terminal adapter with a recording function, which can receive and record a facsimile signal or a telephone signal from an ISDN network according to the setting in (6). 2. The TA control unit (6) enables the pseudo FAX connection function and the pseudo phone connection function in the FAX / telephone correspondence signal generation unit (5) when the unconnected state of the existing terminal is set. The terminal adapter with a recording function according to claim 1, wherein the facsimile signal from the ISDN network and the telephone signal can be mixed and recorded.