JP2000059526A - Dial-in communication terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To operate a connected dial-in line without any change of setting even if it is further subscribed to a caller number notification service by executing an FSK signal detection mode or a DTMF signal detection mode based on a call signal pattern from a line wire to decode a dial-in number and connecting a designated terminal device. SOLUTION: When a call signal detecting part 4 detects an incoming call from a line wire L, a signal processing part 1 of a facsimile machine F discriminates whether the detected calling signal is a normal call signal (CI) or a terminal starting signal (CAR). When it is a CI, the signal processing part 1 closes the contacts (a) of an NC switch SW1 and changeover control switch SW2A and SW2B to carry out a DTMF signal detection mode, then detects a DTMF signal transmitted continuously from an exchange by a DTMF signal detecting part 2, decodes a dial-in signal from the DTMF signal and performs the following steps.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a dial-in communication terminal device capable of receiving a dial-in service, wherein a connected dial-in line (a telephone line subscribed to the dial-in service) is further improved. The present invention relates to a dial-in communication terminal device capable of operating without changing any settings even if a subscriber is subscribed to a caller ID notification service.

[0002]

2. Description of the Related Art Conventionally, a dial-in service has been provided, and a dial-in communication terminal device (PBX or the like) installed in a hotel, a company, or the like, using this service.
However, when an incoming call is received from an outside line, a terminal (telephone or the like) designated for dial-in (extension designation) is called.

In this service, a communication procedure as shown in FIG. 4 is performed between an exchange installed in a telephone station and a dial-in communication terminal device (PBX or the like). That is,
When a dialing call is made at a caller with dial-in designation (extension designation), first, the polarity of the current flowing on the telephone line is reversed in the exchange. Next, a call signal (CI) is sent from the exchange to the dial-in terminal device.

The call signal (CI) is a signal which is intermittently transmitted every second with an off time of 2 seconds as shown in FIG. 6 (a). (CI) is transmitted for one wave. When the dial-in communication terminal device detects a calling signal (CI) from the exchange, it closes the telephone line and forms a DC loop with the exchange, and this DC loop is formed as a primary response signal by the exchange. Upon detection, a DTMF signal, which is dial-in data, is transmitted from the exchange to the dial-in communication terminal device.

In the dial-in communication terminal device, the DT
When the MF signal is detected, the DC loop formed between the exchange and the exchange is released, a dial-in designation reception completion signal is sent to the exchange, and the designated dial-in number is assigned to the terminal. To send a pseudo bell signal to make the terminal ring. When the dial-in communication terminal detects the off-hook of the terminal, the terminal connects to the telephone line and closes the DC loop with the exchange.

When the switching of the DC loop is detected as a secondary response signal by the exchange, the exchange reverses the polarity of the current flowing on the telephone line to make the dial-in designated terminal (extension designated). And establish a communication path to enable communication. Note that the exchange sends a ringback tone to the transmission source between the time when the dial-in communication terminal device detects the dial-in designated reception completion signal and the time when the secondary response signal is detected.

[0007]

On the other hand, recently, NT
T provides a caller ID notification service,
The number of telephone lines subscribing to this service is increasing. One of these services is a modem dial-in service. In order to use this service, it is necessary to change the incoming call setting of the dial-in communication terminal device in accordance with the sequence shown in FIG. Is the actual situation.

That is, in this sequence, unlike FIG. 4, when a call is made by specifying dial-in from the caller, a terminal activation signal (CAR) is sent from the exchange to the dial-in communication terminal device. . This terminal activation signal is a signal specially prepared for the caller ID notification service, and as shown in FIG. This is the signal sent to

When the dial-in communication terminal detects a terminal activation signal (CAR) from the exchange, it closes the telephone line and forms a DC loop with the exchange. When detected as a signal by the exchange, the exchange sends an FSK (frequency modulation) signal, which is dial-in data, to the dial-in communication terminal device.

At this time, the exchange can send the caller ID data together with the dial-in data to the dial-in communication terminal device as an FSK signal. Upon detecting this FSK signal, the dial-in communication terminal device obtains dial-in data from the FSK signal, releases the DC loop formed with the exchange, and sends a dial-in designation reception completion signal to the exchange. Is sent. The exchange that has detected the dial-in designated reception completion signal sends a call signal (CI) to the terminal designated for dial-in via the dial-in communication terminal device to ring the terminal. When the terminal goes off-hook, a DC loop is formed with the exchange.

When the formation of this DC loop is detected as a secondary response signal by the exchange, the exchange reverses the polarity of the current flowing on the telephone line and communicates with the dial-in designated (extension designated) terminal. Create a way to make calls. In this way, normal dial-in service,
Since the sequence after the incoming call is different from that of the modem dial-in service, there is a problem that if the incoming call setting of the dial-in communication terminal device is wrong, the operation does not work properly.

[0012] The present invention has been made in view of the above circumstances, and can be used even if a connected dial-in line (a telephone line subscribed to a dial-in service) further subscribes to a caller ID notification service. It is an object of the present invention to provide a dial-in communication terminal device capable of operating without changing any settings.

[0013]

According to a first aspect of the present invention, there is provided a dial-in communication terminal apparatus, comprising: a FS based on a call signal pattern from an outside line;
A K signal detection mode or a DTMF signal detection mode is executed to decode a dial-in number and connect a terminal designated for dial-in.

This dial-in communication terminal device proposes the first invention, and when there is a call from an outside line, a call signal pattern sent from the exchange is determined, and the type of the call signal is determined by the terminal. If it is a start signal (CAR), FS
While executing the K signal detection mode, the type of the calling signal is
If the call signal is a normal call signal (CI), the DTMF signal detection mode is executed, so that the dial-in line (the telephone line subscribed to the dial-in service) which has been connected up to now is further changed to the caller ID notification service. Even if you subscribe, you can operate properly without changing any settings.

The second aspect of the present invention proposes a dial-in communication terminal device according to the present invention, in which after a call signal from an outside line arrives, the received signal is an FSK signal, a DTM signal.
It discriminates which of the F signals, if it is an FSK signal, connects the called outside line to the terminal dial-in designated by the FSK signal, while if it is a DTMF signal, it designates the dial-in by the DTMF signal A pseudo bell signal is sent to the terminal that has been set.

In this dial-in communication terminal device, after receiving a call signal from an outside line and receiving an incoming call, dial-in data transmitted from the exchange changes to FSK (frequency modulation).
Signal or a DTMF (dual tone multi-frequency) signal. If the signal is an FSK (frequency modulation) signal, an external line is connected to a terminal designated for dial-in and called, In the case of a DTMF signal, a pseudo-bell signal is sent to a terminal designated for dial-in and called, so that the dial-in line (the telephone line subscribed to the dial-in service) which has been connected up to now can be used. Even if the subscriber is subscribed to the caller ID notification service, the operation can be performed correctly without changing any settings.

According to a third aspect of the present invention, the dial-in communication terminal device according to any one of the first and second aspects is a facsimile device. This dial-in communication terminal device can be used as a facsimile device for transmitting and receiving image data of a document, and if a dial-in number is assigned to its own device, it can be used in response to a call from an outside line. Since facsimile transmission / reception can be performed between the terminal and the transmission source, the utility value of the apparatus is increased.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an example of the internal configuration of the dial-in communication terminal device of the present invention. Note that, in this example, the configuration of the facsimile apparatus F is shown as an example of the dial-in communication terminal apparatus, but is not limited thereto.
An apparatus having a circuit switching function such as a PBX may be used. As an example of a terminal, two external telephones T
EL1 and TEL2 are connected so that switching control can be performed for one telephone line L. However, the present invention is not limited to this.
More than one unit may be connected. Further, the terminal is not limited to an external telephone, but may be a built-in telephone or a facsimile machine itself.

The facsimile apparatus F includes a CPU and the like, and controls a signal processing section 1 for controlling the following sections, a DTMF signal detecting section 2 for detecting a DTMF signal transmitted from an exchange, and modulates image data to be transmitted and received. Alternatively, a modem 3 for demodulating or receiving an FSK signal transmitted from the exchange, a call signal detection unit 4 for detecting a call signal transmitted from the exchange, and terminals (in this example, external telephones) TEL1 and TEL2 Power supply for detecting off-hook, and for terminals TEL1 and TEL2,
A pseudo-bell signal generator 6 for transmitting a pseudo-bell signal, a ROM 7 for storing various programs required for the operation of the facsimile apparatus F, a terminal TEL1, TEL
2, a RAM 8 for storing dial-in numbers assigned to the facsimile apparatus F, and a timer for measuring a time during which the pseudo-bell signal generator 6 transmits a pseudo-bell signal to the terminals TEL1 and TEL2. Unit 9, a display unit 10 including a liquid crystal screen and various lamps, an operation unit 11 including a dial-in switch 11A, an image memory 1.
3, a print output unit 12 for printing the image data and the like on recording paper set in advance, an image memory 13 for temporarily storing image data for facsimile transmission and image data received by facsimile, a set original A reading unit 14 for reading and converting image data into image data
Hook detector 1 for detecting off-hook of L1 and TEL2
5A and 15B, an NC switch SW1 for controlling connection and disconnection of the telephone line L to the facsimile apparatus F, and switching control switches SW2A and SW2B for controlling connection and disconnection of the telephone line L to the terminals TEL1 and TEL2.

In this facsimile machine F,
By operating the dial-in switch 11A, it is possible to select whether or not to execute the dial-in function when a call is received from the outside line L. Next, the operation of the facsimile machine F will be described. FIG.
It is a flowchart explaining the basic operation | movement of 1st this invention (100-114).

When the facsimile apparatus F waits for an incoming call,
NC switch SW1 and changeover control switch SW2
A and SW2B have their b contacts closed. When the call signal detector 4 detects an incoming call from the outside line L (10
0), it is determined whether the call is a call using the caller ID notification service or a normal dial-in service. That is, the signal processing unit 1 determines the pattern based on the paging signal detected by the paging signal detection unit 4, and the detected paging signal is a normal paging signal (CI). It is determined whether the received signal is a terminal activation signal (CAR) (101).

The detected calling signal is a normal calling signal (C
If I) (102), the signal processing unit 1 executes the DTMF signal detection mode (103), so that the contact a of the NC switch SW1, the switching control switches SW2A and SW2B
Is closed, the DTMF signal detector 2 detects a DTMF signal (dial-in data) subsequently transmitted from the exchange, and decodes the dial-in number from the DTMF signal (dial-in data) (104). .

When the decoding of the dial-in number is completed, the signal processing section 1 refers to the RAM 8 and determines the type of the decoded dial-in number. That is, if the dial-in number is the facsimile machine F, the terminal TEL1, TEL2
Is determined, and the switching control switches SW2A and SW2B are switched to connect the terminal corresponding to the dial-in number to the telephone line L.

At this time, if the DTMF signal designating the dial-in number sent from the exchange is assigned to the facsimile machine F, the signal processing unit 1
Temporarily closes and opens the NC switch SW1 to the b side, closes the NC switch SW1 again to the a side, connects to the transmission source, and performs facsimile reception according to a normal facsimile communication procedure.

On the other hand, a DTMF signal designating a dial-in number sent from the exchange is transmitted to a terminal, for example, T
If the signal is assigned to EL1, the signal processing unit 1
Closes the NC switch SW1 and the changeover control switch 2B to the b side and opens them, and closes the contact a of the changeover control switch SW2A provided in correspondence with the terminal TEL1 and simulates the pseudo with respect to the terminal TEL1. Bell signal generator 6
A pseudo bell signal is transmitted (105). At the same time, the signal processing unit 1 activates the timer unit 9 and measures the time during which the pseudo bell signal is transmitted (106).

In the timer section 9, the time for transmitting the pseudo bell signal is arbitrarily set in advance. As a result, in the terminal TEL1, the pseudo call bell rings. Terminal TE
If there is a response operation on the L1 side, the hook detection unit 15A detects this (107), so that the signal processing unit 1 stops the measurement by the timer unit 9 and generates the pseudo bell signal by the pseudo bell signal generation unit 6. The output is stopped (108).

Thereafter, the signal processing section 1 closes the switch SW2A, which has closed the contact a, to the side b, and connects the terminal TEL1 to the telephone line L to enable communication (109). ). Here, the pseudo bell signal generator 6
However, since a DC current is applied to the terminal TEL1, the change in the voltage causes the hook detection unit 15A to cause the terminal TE
Off-hook of L1 can be detected.

Here, in step 107, when there is no response operation on the terminal TEL1 side and the hook detection unit 15A does not detect off-hook, the terminal TEL1 continues to ring the pseudo bell until the measurement time by the timer unit 9 elapses. If a preset time has elapsed (110), the signal processing unit 1 stops the output of the pseudo bell signal by the pseudo bell signal generation unit 6 and disconnects the line with the exchange (11).
1).

On the other hand, if the detected calling signal is the terminal activation signal (CAR) in step 102, the signal processing section 1 executes the FSK signal detection mode (step 11).
2) After the contact a of the NC switch SW1 is closed, the modem 3 detects the FSK signal (dial-in data) subsequently transmitted from the exchange.
The dial-in number is decoded from the signal (dial-in data) (113).

When the decoding of the dial-in number is completed, the signal processing section 1 refers to the RAM 8 to determine the type of the decoded dial-in number. That is, if the dial-in number is the facsimile machine F, the terminal TEL1, TEL2
Is determined, and the switching control switches SW2A and SW2B are switched to connect the terminal corresponding to the dial-in number to the telephone line L.

At this time, if the FSK signal designating the dial-in number sent from the exchange is assigned to the facsimile machine F, the signal processing unit 1
Since the NC switch SW1 is temporarily closed to the b side and opened, a call signal (CI) is transmitted from the exchange which detects this. Since this calling signal (CI) is detected by the calling signal detecting unit 4, the signal processing unit 1 switches the NC switch SW1 closed on the b side to the a side, and then performs facsimile communication according to a normal facsimile communication procedure. Perform reception.

On the other hand, an FSK signal designating a dial-in number sent from an exchange is transmitted to a terminal, for example, TE.
If the signal is assigned to L1, the signal processing unit 1
The NC switch SW1 and the switching control switch SW2B are closed and opened to the b side, and the contact b of the switching control switch SW2A provided corresponding to the terminal TEL1 is closed to connect the terminal TEL1 and the telephone line L. (11
4).

Then, a call signal (CI) is transmitted from the exchange, and the terminal TEL1 receiving the call signal (CI)
When a ringing tone sounds and a response operation is performed on the terminal TEL1, communication with the caller is started. Next, the second invention will be described. FIG. 3 is a flowchart for explaining an example of the operation of the second present invention (200 to 21).
2).

When the facsimile apparatus F waits for an incoming call,
Each of the changeover control switches SW2A and SW2B has a closed contact. When the call signal detector 4 detects an incoming call from the outside line L (200), the signal processor 1 detects the call signal sent from the exchange by the call signal detector 4, so that the signal processor 1 The contact a of the NC switch SW1 is closed, a temporary response signal is sent to the exchange, and the signal type is determined from the dial-in number sent from the exchange (201).

That is, when the DTMF signal detector 2 detects the DTMF signal (dial-in data) (202), the signal processor 1 decodes the dial-in number from the DTMF signal (dial-in data) (203). ).
When the decoding of the dial-in number is completed, the signal processing unit 1
Determines the type of the decoded dial-in number with reference to the RAM 8. That is, it is determined whether the dial-in number designates the facsimile machine F or the terminal TEL1 or TEL2, and the switching control is performed to connect the terminal corresponding to the dial-in number to the telephone line L. The switches SW2A and SW2B are switched and controlled.

At this time, if the DTMF signal designating the dial-in number transmitted from the exchange is assigned to the facsimile machine F, the signal processing unit 1
After temporarily closing the C switch SW1 to the b side and opening it,
Close again to the a side, connect to the source, and perform facsimile reception according to the normal facsimile communication procedure. On the other hand, if the DTMF signal specifying the dial-in number transmitted from the exchange is assigned to a terminal, for example, TEL1, the signal processing unit 1 sets the NC switch SW1 and the switching control switch SW2B to the b side. The pseudo bell signal is transmitted from the pseudo bell signal generation unit 6 to the terminal TEL1 while closing and opening the terminal TEL1 while keeping the contact a of the switching control switch SW2A provided corresponding to the terminal TEL1 closed (204). ), The timer unit 9 is started, and the time during which the pseudo bell signal is transmitted is measured (205).

It should be noted that the time for transmitting the pseudo bell signal can be arbitrarily set in the timer section 9 in advance. As a result, in the terminal TEL1, the pseudo call bell rings. If there is a response operation on the terminal TEL1, the hook detection unit 15A detects this (206), so that the signal processing unit 1 stops the measurement by the timer unit 9 and the pseudo bell by the pseudo bell signal generation unit 6. The output of the signal is stopped (207).

Thereafter, the signal processing section 1 closes the switch SW2A, which closed the contact a, to the side b to connect the terminal TEL1 to the telephone line so that communication can be performed (208). . Here, the pseudo bell signal generation unit 6
Since the direct current is applied to the terminal TEL1, the voltage change causes the hook detection unit 15A to cause the terminal TEL1.
Off-hook can be detected.

Here, in step 206, when there is no response operation on the terminal TEL1 side and the hook detecting unit 15A does not detect off-hook, the terminal TEL1 continues to ring the pseudo bell until the measurement time by the timer unit 9 elapses. When a preset time has elapsed (209), the signal processing unit 1 stops outputting the pseudo bell signal of the pseudo bell signal generation unit 6, and disconnects the line with the exchange (210).

On the other hand, in step 202, the modem 3
Detects the FSK signal (dial-in data), the signal processing unit 1
, The dial-in number is decrypted (211). When the decoding of the dial-in number is completed, the signal processing unit 1
With reference to M8, the type of the decrypted dial-in number is determined. That is, it is determined whether the dial-in number designates the facsimile machine F or the terminal TEL1 or TEL2, and the switching control is performed to connect the terminal corresponding to the dial-in number to the telephone line L. The switches SW2A and SW2B are switched and controlled.

At this time, if the FSK signal designating the dial-in number transmitted from the exchange is assigned to the facsimile machine F, the signal processing unit 1
Since the NC switch SW1 is temporarily closed to the side b and opened, and then closed again to the side a and connected to the transmission source, a call signal (CI) is transmitted from the exchange which detects this.
Since this calling signal (CI) is detected by the calling signal detecting unit 4, the signal processing unit 1 thereafter performs facsimile reception according to a normal facsimile communication procedure.

On the other hand, an FSK signal designating a dial-in number transmitted from the exchange is transmitted to a terminal, for example, a TE.
If the signal is assigned to L1, the signal processing unit 1
The NC switch SW1 and the switching control switch SW2B are closed and opened to the b side, and the contact a of the switching control switch SW2A provided corresponding to the terminal TEL1 is once closed and opened, and then closed again to the contact b side. , Terminal TEL
1 and the telephone line L are connected (212).

Then, a call signal (CI) is transmitted from the exchange, and the terminal TEL1 receiving the call signal (CI)
When a ringing tone sounds and a response operation is performed on the terminal TEL1, communication with the caller is started.

[0044]

As can be understood from the above description, in the dial-in communication terminal device according to the first aspect of the present invention, if there is a call from an outside line, the call signal pattern sent from the exchange is determined. If the type of the call signal is a terminal activation signal (CAR), the FSK signal detection mode is executed.
Since the MF signal detection mode is executed, even if the dial-in line (the telephone line subscribed to the dial-in service) that has been connected so far further subscribes to the caller ID notification service, there is no change in the incoming call setting. Can work properly.

In the dial-in communication terminal device according to the second aspect, after receiving a call signal from an outside line and receiving an incoming call, the dial-in data transmitted from the exchange has FSK.
(Frequency modulation) signal or DTMF signal. If the signal is an FSK (frequency modulation) signal, an external line is connected to a dial-in designated terminal and called, while a DTMF signal is used. If so, a pseudo-bell signal is sent to the terminal designated for dial-in and called, so the dial-in line (the telephone line subscribed to the dial-in service) that has been connected up to now
However, even if the user subscribes to the caller ID notification service, it can operate correctly without any change in the incoming call setting.

According to the third aspect of the present invention, the dial-in communication terminal device can be used as a facsimile device for transmitting and receiving image data of a document. Since a facsimile transmission / reception can be performed between the own apparatus and the transmission source in response to a call from the user, the utility value of the apparatus is increased.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of an internal configuration of a dial-in communication terminal device of the present invention.

FIG. 2 is a flowchart illustrating an example of an operation of the dial-in communication terminal device.

FIG. 3 is a flowchart illustrating another example of the operation of the dial-in communication terminal device.

FIG. 4 is a diagram showing an incoming call procedure in a dial-in service.

FIG. 5 is a diagram showing an incoming call procedure in a caller ID notification service (modem dial-in service).

6A is a diagram illustrating a transmission pattern of a call signal (CI), and FIG. 6B is a diagram illustrating a transmission pattern of a terminal activation signal (CAR).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Signal processing part 2 ... DTMF signal detection part 3 ... Modem 4 ... Paging signal detection part 6 ... Pseudo bell signal generation part 9 ... Timer part 15A, 15B ... Hook Detector F: Facsimile machine L: Telephone line TEL1, TEL2: Terminal SW1: NC switch SW2A, SW2B: Switching control switch

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] November 11, 1998 (1998.11.
11)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0022

[Correction method] Change

[Correction contents]

The detected calling signal is a normal calling signal (C
If I) (102), the signal processing unit 1 closes the contact point a of the NC switch SW1 to execute the DTMF signal detection mode (103), and then the DTMF signal detection unit 2 sends the signal from the exchange. The received DTMF signal (dial-in data) is detected, and the dial-in number is decoded from the DTMF signal (dial-in data) (104).

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

When the decoding of the dial-in number is completed, the signal processing section 1 refers to the RAM 8 and determines the type of the decoded dial-in number. That is, if the dial-in number is the facsimile machine F, the terminal TEL1, TEL2
Is determined, and in order to connect the terminal corresponding to the dial-in number to the telephone line L, an NC switch SW1, a switching control switch SW2A,
SW2B is switched and controlled.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

That is, if the DTMF signal designating the dial-in number transmitted from the exchange is assigned to the facsimile machine F, the signal processing unit 1
Temporarily closes and opens the NC switch SW1 to the b side, closes the NC switch SW1 again to the a side, connects to the transmission source, and performs facsimile reception according to a normal facsimile communication procedure.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Change

[Correction contents]

On the other hand, a DTMF signal designating a dial-in number sent from the exchange is transmitted to a terminal, for example, T
If the signal is assigned to EL1, the signal processing unit 1
Closes and opens the NC switch SW1 to the b side and closes the contact a of the switching control switch SW2A provided corresponding to the terminal TEL1, so that the pseudo bell signal generation unit 6 A pseudo bell signal is transmitted (105). At the same time, the signal processing unit 1 activates the timer unit 9 and measures the time during which the pseudo bell signal is transmitted (106).

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0030

[Correction method] Change

[Correction contents]

When the decoding of the dial-in number is completed, the signal processing section 1 refers to the RAM 8 to determine the type of the decoded dial-in number. That is, if the dial-in number is the facsimile machine F, the terminal TEL1, TEL2
Is determined, and in order to connect the terminal corresponding to the dial-in number to the telephone line L, an NC switch SW1, a switching control switch SW2A,
SW2B is switched and controlled.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction contents]

That is, if the FSK signal designating the dial-in number sent from the exchange is assigned to the facsimile machine F, the signal processing unit 1
Since the NC switch SW1 is temporarily closed to the b side and opened, a call signal (CI) is transmitted from the exchange which detects this. Since this calling signal (CI) is detected by the calling signal detecting unit 4, the signal processing unit 1 switches the NC switch SW1 closed on the b side to the a side, and then performs facsimile communication according to a normal facsimile communication procedure. Perform reception.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0032

[Correction method] Change

[Correction contents]

On the other hand, an FSK signal designating a dial-in number sent from an exchange is transmitted to a terminal, for example, TE.
If the signal is assigned to L1, the signal processing unit 1
While closing and opening the NC switch SW1 to the b side,
The contact b of the changeover control switch SW2A provided corresponding to the terminal TEL1 is closed to connect the terminal TEL1 and the telephone line L (114).

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction contents]

When the facsimile apparatus F waits for an incoming call,
NC switch SW1, switching control switch SW2A, SW
In each of 2B, the b contact is closed. When the call signal detector 4 detects an incoming call from the outside line L (200), the signal processor 1 detects the call signal sent from the exchange by the call signal detector 4, so that the signal processor 1
The contact a of the NC switch SW1 is closed, a temporary response signal is transmitted to the exchange, and the signal type is determined from the dial-in number transmitted from the exchange (20).
1).

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction contents]

That is, when the DTMF signal detector 2 detects the DTMF signal (dial-in data) (202), the signal processor 1 decodes the dial-in number from the DTMF signal (dial-in data) (203). ).
When the decoding of the dial-in number is completed, the signal processing unit 1
Determines the type of the decoded dial-in number with reference to the RAM 8. That is, it is determined whether the dial-in number designates the facsimile machine F or the terminal TEL1 or TEL2, and the NC switch SW1 is connected to connect the terminal corresponding to the dial-in number to the telephone line L. The switching control switches SW2A and SW2B are switched.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction contents]

That is, if the DTMF signal designating the dial-in number sent from the exchange is assigned to the facsimile machine F, the signal processing unit 1
After temporarily closing the C switch SW1 to the b side and opening it,
Close again to the a side, connect to the source, and perform facsimile reception according to the normal facsimile communication procedure. On the other hand, if the DTMF signal designating the dial-in number transmitted from the exchange is assigned to a terminal, for example, TEL1, the signal processing unit 1 closes and opens the NC switch SW1 to the b side and opens it. , The terminal T
The contact point a of the changeover control switch SW2A provided corresponding to EL1 is closed, a pseudo bell signal is transmitted from the pseudo bell signal generation unit 6 to the terminal TEL1 (204), and the timer unit 9 is started. Then, the time during which the pseudo bell signal is transmitted is measured (205).

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0038

[Correction method] Change

[Correction contents]

Thereafter, the signal processing section 1 closes the switching control switch SW2A, which closed the contact a, to the side b to connect the terminal TEL1 to the telephone line L so that communication can be performed (208). ). Here, the pseudo bell signal generator 6
However, since a DC current is applied to the terminal TEL1, the change in the voltage causes the hook detection unit 15A to cause the terminal TE
Off-hook of L1 can be detected.

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0040

[Correction method] Change

[Correction contents]

On the other hand, in step 202, the modem 3
Detects the FSK signal (dial-in data), the signal processing unit 1
, The dial-in number is decrypted (211). When the decoding of the dial-in number is completed, the signal processing unit 1
With reference to M8, the type of the decrypted dial-in number is determined. That is, it is determined whether the dial-in number designates the facsimile machine F or the terminal TEL1 or TEL2, and the NC switch SW is used to connect the terminal corresponding to the dial-in number to the telephone line L.
1. Switching control switches SW2A and SW2B are switched.

[Procedure amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0041

[Correction method] Change

[Correction contents]

That is, if the FSK signal designating the dial-in number sent from the exchange is assigned to the facsimile machine F, the signal processing unit 1
The NC switch SW1 is temporarily closed to the b side and opened.
After that, the call signal (C
When the call signal detecting section 4 detects I), the signal processing section 1
Closes the contact a of the NC switch SW1 and performs facsimile reception according to a normal facsimile communication procedure.

[Procedure amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0042

[Correction method] Change

[Correction contents]

On the other hand, an FSK signal designating a dial-in number transmitted from the exchange is transmitted to a terminal, for example, a TE.
If the signal is assigned to L1, the signal processing unit 1
The terminal TE is closed by opening the NC switch SW1 to the b side and then opened, and then closing the contact a of the switching control switch SW2B of the terminal TEL2 and opening the terminal TE.
L1 and the telephone line L are connected (212).

Claims (3)

[Claims] (1) based on a calling signal pattern from an outside line,
A dial-in communication terminal device for executing a FSK signal detection mode or a DTMF signal detection mode to decode a dial-in number and connect a terminal designated for dial-in. 2. After arriving at a call signal from an outside line, it is determined whether the received signal is an FSK signal or a DTMF signal.
A dial-in communication terminal device for connecting to a terminal designated for dial-in by a K signal and transmitting a pseudo-bell signal to a terminal designated for dial-in by a DTMF signal when the terminal is a DTMF signal. 3. The dial-in communication terminal device according to claim 1, wherein the dial-in communication terminal device is a facsimile device.