JP2000196778A - Facsimile equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a facsimile equipment capable of making a call through an ISDN by connecting an analog telephone set by providing a telephone interface means composed of a tone transmission means for transmitting a tone to the reception side of a signal separation means. SOLUTION: A communication analog part 11 executes filter processing of the analog signal of a MODEM part 10 or an NCU part 12 and the switch of a signal route. An I/O control part 25 controls an input/output port in accordance with the instruction of a system control part 21 and controls/state- monitors an analog interface part 27, a TEL interface part 40 and a CODEC part 28. The host interface part 26 transfers a command response and picture information with a host system. A TEL interface part 40 is added to a PSTN communication part 12 and an ISDN communication part 20 with such constitution. Thus, the call can be made through the ISDN of an analog telephone set 60.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus, and more particularly to a control for connecting an analog telephone to an ISDN in a facsimile apparatus.

[0002]

2. Description of the Related Art To make a call over an ISDN line, it is necessary to purchase a digital telephone or to use a terminal adapter connected to an analog telephone.

[0003]

Therefore, a user of a facsimile machine capable of performing G4 communication via ISDN has
Even if it is desired to use an analog telephone for the PSTN line which has been used until then, there is a problem that such a demand cannot be met.

[0004] The present invention has been made in view of the above circumstances, and has as its object to provide a facsimile apparatus capable of connecting an analog telephone and making a telephone call via ISDN.

[0005]

According to one aspect of the present invention, there is provided a facsimile apparatus having a communication function via a PSTN and a communication function via an ISDN. Connecting means for connecting an analog telephone which can be used in the above, DC supply means for supplying DC to the analog telephone, polarity inversion means for inverting the polarity of DC supplied to the analog telephone, and generating a ringing signal. Ringing means for ringing the analog telephone, means for detecting off-hook of the analog telephone and a dial pulse to be transmitted, signal separation means for separating a signal of the analog telephone into a transmission signal and a reception signal, Means for detecting a DTMF signal from the transmitting side of the signal separating means, and tone transmission for transmitting a tone to the receiving side of the signal separating means. It includes a telephone interface means constituted by means, characterized in that to enable the call through the ISDN by the analog telephone.

A facsimile apparatus according to a second aspect of the present invention is the facsimile apparatus according to the first aspect, wherein a frequency of a sound signal generated by a sound means for each country or each region is determined.
Parameter storage means for storing in advance the output voltage level and on / off time, and the parameters of the tone frequency, output voltage level and on / off time transmitted by the tone transmission means, and installation location setting for setting a country or region Means, the frequency, output voltage level and on / off time of the ringing signal, and the frequency, output voltage level and on / off time of the tone transmitted by the tone transmitting means are set by the installation location setting means. Parameter setting means for setting based on a parameter stored in the parameter storage means corresponding to a country or a region.

A facsimile apparatus according to a third aspect is characterized in that, in the facsimile apparatus according to the second aspect, the parameter storage means is provided on the side of the PSTN communication function.

A facsimile apparatus according to a fourth aspect of the present invention is the facsimile apparatus according to the third aspect, wherein the parameter storage means stores the PST as a parameter.
It is characterized in that parameters for communication via the PSTN originally provided in the N communication function are shared.

A facsimile apparatus according to a fifth aspect of the present invention is the facsimile apparatus according to any one of the first, second, third and fourth aspects, wherein the unit including the telephone interface means is provided for a communication function via a PSTN. NC
It is characterized in that it can be replaced with a unit including a U part.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment of the present invention will be described in detail.

First, FIG. 1 shows a block configuration of a facsimile apparatus according to an embodiment of the present invention.

In FIG. 1, a facsimile apparatus is a PS
A PSTN communication unit 1 for communication (including a call) function via TN, an ISDN communication unit 20 for a communication (including a call) function via ISDN, and a TE
And an L interface unit 40.

The system control unit 2 of the PSTN communication unit 1
This is a microcomputer that controls the entire STN communication unit 1. The system memory unit 3 stores information necessary for controlling PSTN communication and parameters necessary for controlling PSTN network connection in each country (dial tone detection frequency, non-detection frequency, detection level, non-detection level, busy tone detection frequency, non-detection frequency, On-time, off-time, detection level, non-detection level, ringing detection frequency, non-detection frequency, on-time, off-time, etc.) are stored. The image memory unit 4 is for storing image information.

The encoding / decoding section 5 is for encoding and decoding image information. The recording unit 6 is for recording image information on recording paper. The reading section 7 is for reading original image information. Operation unit 8 is LC
It is provided with various operation keys such as a display such as D, numeric keys, and keys for selecting and setting a country or region. The I / O control unit 9 controls an input / output port according to a command from the system control unit 2, and the communication analog unit 11, NC
This is for controlling / monitoring the state of the U section 12 and the like.

The modem unit 10 converts a protocol signal and image information into V. 21, V.I. 34, V.I. 17, V.I. Modulation and demodulation in accordance with standards such as H.29, HDLC framing / deframing of data during protocol and ECM transmission / reception, C
This is for performing an RC check, transmitting and receiving a DTMF signal, and transmitting and receiving a tone. Communication analog unit 11
Is for performing a filtering process of an analog signal of the modem unit 10 or the NCU unit 12, switching of a signal path, and the like. The NCU unit 12 is an interface with an analog (PSTN) line, and detects a call signal and the like. Further, an analog telephone 50 for PSTN can be connected to the NCU unit 12, and the NCU unit 12 also controls connection between the analog telephone 50 and the PSTN line.

The system control unit 21 of the ISDN communication unit 20 is a microcomputer that controls the entire ISDN communication unit 20. The system memory unit 22 includes information necessary for system control and parameters necessary for controlling a certain country-specific analog port (dial tone transmission frequency, busy tone transmission frequency, on time, off time, ringing transmission frequency, on time, off time, etc.). Is to be stored.

The image memory section 23 is for storing image information. The encoding / decoding unit 24 is for encoding and decoding image information. I / O control unit 25
Is for controlling input / output ports in accordance with instructions from the system control section 21 and for controlling / monitoring the analog interface section 27, the TEL interface section 40, the codec section 28, and the like. The host interface unit 26 is for exchanging command responses and image information with a host system (PSTN communication unit of the apparatus main body in the case of the present embodiment).

The analog interface unit 27 exchanges analog signals with the host system. The codec unit 28 converts the analog signal into PCM according to the A / μ rule. The B-channel transmission control unit 29 is for transmitting image information as an HDLC frame on the B-channel. The D channel transmission control unit 30 is for performing call control on the D channel. The layer 1 signal control unit 31 is for matching each data of the D channel and the B channel with the layer 1 specification. The ISDN interface 32 is for interfacing with a digital (ISDN) line.

The above-configured PSTN communication unit and 1 and IS
By adding the TEL interface 40 to the DN communication unit 20, an ISDN call using the analog telephone 60 can be made possible.

FIG. 2 shows the configuration of the TEL interface section 40 and the analog interface section 27.

In FIG. 1, SW1 and SW2 of the analog interface unit 27 connect the codec unit 28 to the modem unit 10 via the communication analog unit 11, or
This is for selecting whether to connect to the TEL interface unit 40.

The DC supply / ringing signal generation / off-hook detection unit 41 of the TEL interface unit 40 supplies DC to the analog telephone 60 connected to the TEL interface 40 to detect the off-hook of the analog telephone 60, This is for generating a sound signal in the device 60. The DC supply / polarity inversion / off-hook detection unit 42 supplies DC to the analog telephone 60, detects off-hook and dial pulses of the analog telephone 60, and inverts the polarity of the supplied DC. is there. The 2-wire to 4-wire conversion unit is used for telephone calls (transmission and reception)
Is separated into transmission and reception. DT
The MF receiver section 44 detects the number of the DTMF signal input from the analog telephone 60.
The tone generation section 45 is for generating a pseudo dial tone when making a call from the analog telephone 60 or for generating a pseudo busy tone when the other party is busy or the line is disconnected. The adder 46 is for adding the tone output from the tone generator 45 to the reception signal. However, in order to add the tone output from the tone generation section 45 to the reception signal, the reception signal from the codec section 28 or the tone output from the tone generation section 45 is simply switched by a switch instead of the signal addition by the addition section 46. You may do so.

SW3 is used to switch between connecting the analog telephone 60 to the DC supply / ringing signal generation / off-hook detection unit 41 or the DC supply / polarity inversion / off-hook detection unit 42. During standby, it is connected to the DC supply / sound signal generation / off-hook detection unit 41 side.

In the case of a call from the analog telephone 60,
When the off-hook of the analog telephone 60 is detected by the DC supply / ringing signal generation / off-hook detecting unit 41, S
W3 is switched to the DC supply / polarity inversion / off-hook detection unit 42 side, and SW1 and SW2 are switched to the analog telephone 60 side (TEL
Interface 40), and the tone generator 4
From 5, the pseudo dial tone is generated in the same way as when the PSTN local exchange sends the subscriber terminal to the off-hook subscriber terminal.

When a telephone number is input from the analog telephone 60, the number is DP (dial pulse), the DC supply / polarity inversion / off-hook detection unit of the off-hook detection unit 42, and if the number is a DTMF signal, the DTMF receiver unit. 4
4 and performs call setup via ISDN for the other party.

When the ISDN call is set in this manner, the DC supply / polarity inversion / off-hook detection unit 42 sets the PSTN
When the destination responds and the line is connected, the polarity of the direct current is inverted in the same manner as performed by the local exchange. The transmission / reception signal is separated into a transmission signal and a reception signal by a two-wire / four-wire conversion unit 43, and the transmission signal is converted to a codec unit 28 via SW1.
, The received signal is transmitted from the codec unit 28 via SW2 to 2
The signal is input to the line-to-line conversion unit 43 to enable a telephone call.

When the call by the analog telephone 60 is terminated, the DC polarity is reversed by the DC supply / polarity inversion / off-hook detection unit 42, and the on-hook of the analog telephone 60 is changed to DC supply / polarity inversion / off-hook. Detector 42
, The switches SW1, 2, and 3 are returned to the original state, and the apparatus enters a standby state.

If a call is made from the analog telephone 60 and the other party is busy, the tone generator 45
Generates a pseudo-busy tone from DC supply, polarity reversal,
When the on-hook is detected by the off-hook detection unit 42, the process returns to the standby state.

In the case of an incoming call, after switching SW1 and SW2 to the analog telephone 60 side, the DC telephone supply / ringing signal generation / off-hook detecting unit 41 generates a ringing signal to make the analog telephone 60 ring and detect off-hook. Or the incoming call is disconnected, and the analog telephone 60 continues to ring. When an off-hook is detected, SW3 is switched to the DC supply / polarity reversal / off-hook detection unit 42 side, and a call is made in the same manner as when making a call. However, polarity inversion is not performed. When the on-hook is detected also at the end of the call, the switches 1, 2, and 3 are returned to the original state.

As a result, a call via the PSTN or G3
G3 via facsimile communication and ISDN
In addition to performing facsimile communication and G4 facsimile communication, when there is a call from the analog telephone 60 or an incoming telephone call from ISDN, the IS using the analog 60
Calls can be made via the DN.

The frequency, generated voltage level, and on / off time of the sound signal generated by the DC supply / sound signal generation / off-hook detection unit 41 and the tone signal generated by the tone generation unit 45 are variable. As shown in FIG.
In the system memory unit 22 of the DN communication unit 20, each parameter of a generation frequency, a generation voltage level, and an on / off time of a ringing signal or a tone signal is stored in a parameter table 22.
By storing in advance as a, the DC supply / ringing signal generation / off-hook detection unit 41 generates a ringing signal having a generation frequency, a generation voltage level, and an on / off time according to the stored parameters. The tone signal may be generated by the tone generator 45. In that case, the parameter table 22a stored in the system memory unit 22 is changed according to the characteristics of the ringing signal and tone signal in the country or region where the facsimile machine is installed, so that the parameter table 22a is reliably installed regardless of the country or region where it is installed. Using the analog telephone 60, a call can be made via ISDN.

Also, the frequency, generated voltage level, and on / off time of the ringing signal generated by the DC supply / ringing signal generation / off-hook detecting section 41 and the tone signal generated by the tone generating section 45 are variable. As shown in FIG.
In the system memory unit 22 of the DN communication unit 20, each parameter of a generation frequency, a generation voltage level, and an on / off time of a sound signal or a tone signal for each country or each region is stored in advance as a region-specific parameter table 22 b. The country or region where each facsimile machine is actually installed is set by inputting a predetermined code number from the operation unit 8 or the like.
By storing it as c in the system memory unit 22,
The generated frequency, generated voltage level, and on / off time according to the parameter corresponding to the country or region stored in the regional parameter table 22b corresponding to the country or region set as the set region information 22c, The ringing signal may be generated by the DC supply / ringing signal generation / off-hook detection unit 41, and the tone signal may be generated by the tone generation unit 45. In this case, it is possible to reliably use the analog telephone 60 to make a call via ISDN irrespective of the country or region where the facsimile machine is installed, and to set only the country or region where the facsimile machine is installed after installation. The trouble of setting parameters individually for the facsimile machine can be omitted, and the configuration can be shared regardless of the country or region where the facsimile machine is installed.

The frequency, generated voltage level, and on / off time of the ringing signal generated by the DC supply / ringing signal generation / off-hook detection unit 41 and the tone signal generated by the tone generation unit 45 are variable. As shown in FIG.
In the system memory unit 3 of the TN communication unit 1, the parameters of the generation frequency, the generation voltage level, and the on / off time of the ringing signal and the tone signal for each country or each region are stored in advance as a region-specific parameter table 3a. The country or region where each facsimile machine is actually installed is set by inputting a predetermined code number from the operation unit 8 or the like, and the setting information is stored in the system memory unit 3 as set region information 3b. By doing so, the parameters corresponding to the country or region stored in the regional parameter table 3a corresponding to the country or region set as the set region information 3b are stored in the regional parameter table 3a.
a to the ISDN communication unit 20 side, and the DC signal supply / sound signal generation / off-hook detection unit 41 generates a sound signal of the generated frequency, generated voltage level, and on / off time according to the downloaded parameters. And
The tone signal may be generated by the tone generator 45. In this case, it is possible to reliably use the analog telephone 60 to make a call via ISDN irrespective of the country or region where the facsimile machine is installed, and to set only the country or region where the facsimile machine is installed after installation. The trouble of setting parameters individually for the facsimile machine can be omitted, and the configuration can be shared regardless of the country or region where the facsimile machine is installed. Further, the system memory unit 2 on the ISDN communication unit 20 side
2 can be used effectively.

The frequency, generated voltage level, and on / off time of the sound signal generated by the DC supply / sound signal generation / off-hook detection unit 41 and the tone signal generated by the tone generation unit 45 are variable. As shown in FIG.
In the system memory unit 3 of the TN communication unit 1, the Ps originally stored for PSTN network connection control for each country or each region are stored.
The STN network control parameter 3c is substituted for the regional parameter table 3a in FIG. 5, and the country or region where each facsimile machine is actually installed is input as a predetermined code number from the operation unit 8 for setting. The setting information is used as the setting area information 3b in the system memory unit 3.
, The parameters corresponding to the country or region stored in the regional parameter table 3a corresponding to the country or region set as the set region information 3b are read from the PSTN network control parameters 3c to the ISDN. The ringing signal is downloaded to the communication unit 20 side, and the ringing signal of the generated frequency, the generated voltage level, and the on / off time according to the downloaded parameter is supplied to the DC supply / ringing signal generation / off-hook detection unit 41, and the tone is generated. The signal may be generated by the tone generator 45. In this case, it is possible to reliably use the analog telephone 60 to make a call via ISDN irrespective of the country or region where the facsimile machine is installed, and to set only the country or region where the facsimile machine is installed after installation. The trouble of setting parameters individually for the facsimile machine can be omitted, and the configuration can be shared regardless of the country or region where the facsimile machine is installed. Further, IS
The system memory unit 22 of the DN communication unit 20 can be used effectively. Further, by diverting the PSTN network control parameter table 3c originally possessed by the PSTN communication unit 1, the system memory unit 3 on the PSTN communication unit 1 side of the main unit.
Can also be used effectively.

Further, the facsimile apparatus according to the present embodiment may be configured as shown in FIG.

The figure differs from the one shown in FIG. 1 in that the NCU unit 12 of the PSTN communication unit is omitted and
The difference is that connectors CN1a and CN2a connected to the analog interface unit 27 and connectors CN3a and CN4a connected to the I / O control unit 25 are provided in the SDN communication unit 20.

The connector CN1a, CN2a, CN3a and CN4a are connected to the TEL interface unit 400 shown in FIG. 8 or the NCU unit 12 shown in FIG.
0 can be connected and the TEL interface unit 40
0 and respective connectors CN of the NCU unit 120
1b, CN2b, CN3b and CN4b are respectively
This is a connector paired with the connectors CN1a, CN2a, CN3a, and CN4a.

TEL interface unit 400
Includes, as a configuration, the TEL interface unit 40 in the configuration shown in FIG.
Includes the NCU unit 12 in the configuration shown in FIG. 1 as a configuration.

When the NCU unit 120 is connected, the analog interface unit 27 and the communication analog unit 1
1, the NCU unit 120 and the modem unit 10 are connected, and the NCU unit 120
Under the control of the I / O control unit 25, the same operation as that of the NCU unit 12 in the configuration shown in FIG. 1 can be performed.

When the TEL interface unit 400 is connected, the NCU unit 120 and the modem unit 10 or the codec unit 28 are connected by signal switching by the analog interface unit 27 and the communication analog unit 11, and the TEL interface unit 4 is connected.
00 is controlled by the I / O control unit 25 so that the TEL interface unit 40 in the configuration shown in FIG.
The same operation can be performed.

As a result, one connection interface can be shared by the TEL interface unit 40 and the NCU unit 12, so that the apparatus cost can be reduced.

[0042]

According to the first aspect of the present invention, an effect is obtained in which an analog telephone can be connected to a facsimile apparatus by the analog telephone interface and a call can be made via the ISDN using the analog telephone.

According to the second aspect of the present invention, an analog telephone is connected and used irrespective of the country or region where the facsimile machine is installed. The effect that becomes possible is obtained.

According to the third aspect of the present invention, the parameter storage means having a large amount of data to be stored is provided in the memory on the main body side, and the memory on the component side of the ISDN communication function for downloading only necessary parameters is provided. The effect that can be used effectively is obtained.

According to the invention of claim 4, the PST
In order to divert parameters for communication via the PSTN originally provided in the N communication function as parameters stored in the parameter storage means, an analog telephone is connected and ISD
If an analog telephone only for making a call via N is not connected, there is no need to separately store parameters that are not used, and an effect that the memory on the main body side can be effectively used is obtained.

According to the fifth aspect of the present invention, the connection section of the unit including the telephone interface means, and the PS
Since the connection unit of the unit including the NCU unit for the communication function via the TN can be shared, there is no need to separately provide a connection unit for each unit, the device configuration can be simplified, and the device cost can be reduced. The effect that it becomes possible to connect an analog telephone while suppressing it is obtained.

[Brief description of the drawings]

FIG. 1 is a diagram showing a block configuration of a facsimile apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a facsimile apparatus according to an embodiment of the present invention, such as a TEL interface;

FIG. 3 is a diagram showing contents stored in a system memory unit on the ISDN communication unit side of the facsimile apparatus according to the embodiment of the present invention.

FIG. 4 is another diagram showing the contents stored in the system memory unit on the ISDN communication unit side of the facsimile apparatus according to the embodiment of the present invention.

FIG. 5 is a diagram showing contents stored in a system memory unit on the PSTN communication unit side of the facsimile apparatus according to the embodiment of the present invention.

FIG. 6 is another diagram showing the contents stored in the system memory unit on the PSTN communication unit side of the facsimile apparatus according to the embodiment of the present invention;

FIG. 7 is a diagram showing another block configuration of the facsimile apparatus according to the embodiment of the present invention.

FIG. 8 is a diagram showing a TEL interface unit.

FIG. 9 is a diagram showing an NCU unit.

[Explanation of symbols]

Reference Signs List 1 PSTN communication unit 2 System control unit 3 System memory unit 3a Regional parameter table 3b Setting regional information 3c PSTN network control parameter table 4 Image memory unit 5 Encoding / decoding unit 6 Recording unit 7 Reading unit 8 Operating unit 9 I / O control section 10 Modem section 11 Communication analog section 12 NCU section 13 System bus 20 ISDN communication section 21 System control section 22 System memory section 22a Parameter table 22b Regional parameter table 22c Regional information 23 Image memory section 24 Encoding / decoding section 25 I / O control unit 26 Host interface unit 27 Analog interface unit 28 Codec unit 29 B channel transmission control unit 30 D channel transfer control unit 31 Layer 1 signal control unit 32 ISDN interface unit 33 Sys Bus 40 TEL interface unit 41 DC supply / ringing signal generation / off-hook detection unit 42 DC supply / polarity inversion / off-hook detection unit 43 2-wire to 4-wire conversion unit 44 DTMF receiver unit 45 Tone generation unit 50, 60 Analog telephone CN (1a) , 1b), CN (2a, 2b), CN (3
a, 3b), CN (4a, 4b) Connector SW1, SW2, SW3 Switch

Claims (5)

[Claims] 1. A communication function via a PSTN and an ISDN
A facsimile apparatus having a communication function via a telephone, connecting means for connecting an analog telephone which can be used in the PSTN, DC supply means for supplying DC to the analog telephone, and DC supplying to the analog telephone. Polarity inverting means for inverting the polarity of the analog telephone, ringing means for generating a ringing signal to ring the analog telephone, means for detecting the off-hook of the analog telephone and a dial pulse to be transmitted, and a signal from the analog telephone. A signal separating means for separating the signal into a transmission signal and a reception signal, means for detecting a DTMF signal from the transmitting side of the signal separating means, and tone transmitting means for transmitting a tone to the receiving side of the signal separating means. A telephone interface means for enabling a telephone call via the ISDN by the analog telephone. Facsimile machine. 2. The frequency, output voltage level and on / off time of a ringing signal generated by a ringing means for each country or each region, and the frequency, output voltage level and on / off of a tone transmitted by said tone transmitting means. Parameter storage means for storing time parameters in advance, installation location setting means for setting a country or region, frequency of the ringing signal, output voltage level and on / off time, and the tone transmitted by the tone transmission means. Parameter setting means for setting a frequency, an output voltage level, and an on / off time based on parameters stored in the parameter storage means corresponding to the country or region set by the installation location setting means. Claim 1 characterized by the following:
A facsimile apparatus according to claim 1. 3. The facsimile apparatus according to claim 2, wherein said parameter storage means is provided on the side of a PSTN communication function. 4. A parameter originally stored in the PSTN communication function as a parameter stored in the parameter storage unit.
The facsimile apparatus according to claim 3, wherein parameters for communication via TN are shared. 5. A unit comprising said telephone interface means and an NCU for a communication function via PSTN.
5. The facsimile apparatus according to claim 1, wherein the facsimile apparatus is configured to be exchangeable with a unit including a unit.