JP3034555B2 - ISDN facsimile machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an ISDN facsimile apparatus using ISDN as a transmission line.

[Related Art] In general, when one telephone line is shared by a facsimile apparatus and a telephone terminal, it is necessary to set which terminal function is used to respond to an incoming call when an incoming call is detected.

In addition, facsimile apparatuses having a function of responding to a voice message notifying that the terminal itself is a facsimile terminal have also been put into practical use, and in such facsimile apparatuses,
When the incoming call response is set by the facsimile terminal function, when an incoming call is detected, a facsimile transmission procedure for incoming call is started after responding to the voice message.

Further, a facsimile apparatus having an answering machine function has also been put into practical use, and in such a facsimile apparatus, when an incoming call response is set by a telephone terminal function, and an answering machine is set in an answering mode, when an incoming call is detected, After responding to the guidance message for answering machine, a signal received from the partner terminal is recorded for a certain period.

[Problems to be Solved by the Invention] However, such a conventional apparatus has the following disadvantages.

That is, in a facsimile apparatus that responds to a voice message notifying that its own terminal is a facsimile terminal, if a response to an incoming call is set by the facsimile terminal function, a voice message is always answered when an incoming call is detected. It takes a long time to start, and the transmission time becomes longer.

Also, in a facsimile machine with an answering machine function, when answering an incoming call is set by the telephone terminal function and the answering machine mode is set, when an incoming call is detected, the answering machine always operates, so When the terminal is a facsimile device, there has been a problem that image information cannot be transmitted.

The present invention has been made in view of such circumstances,
It aims to provide an easy-to-use ISDN facsimile machine.

[Means for Solving the Problems] The present invention relates to an ISDN facsimile apparatus using ISDN as a transmission path, wherein a voice response means for generating a predetermined terminal identification voice message signal and a call setting message received at the time of detecting an incoming call are transmitted. Analyzed, if it is determined that the other terminal has a facsimile function, it is shifted to G3 receiving means, and it is determined that the other terminal is a 3.1 KHz audio signal but does not have a G2, G3 facsimile function In this case, after responding to the partner terminal with the terminal identification voice message signal generated by the voice response unit, the process is shifted to the G3 receiving unit, and it is determined that the partner terminal is a voice signal but does not have a telephone terminal function. In such a case, after responding to the other terminal with the terminal identification voice message signal generated by the voice response means, control means for shifting to a G3 incoming call procedure is provided. Those were.

Further, in an ISDN facsimile apparatus using ISDN as a transmission line, a voice response storage means for generating a predetermined response voice message signal and storing a voice signal, and analyzing the contents of a call setting message received upon detection of an incoming call, If it is determined that the device has a facsimile function, the process proceeds to the G3 incoming
If it is determined that the voice response signal is a Hz audio signal but does not have a G2, G3 facsimile function, after answering the answering guidance voice message signal generated by the voice response storage unit to the other terminal, the other When voice storage is started and it is determined that the partner terminal is a voice signal but does not have a telephone terminal function, after answering the answering guidance voice message signal generated by the voice response storage means to the partner terminal, And control means for starting voice storage from the partner terminal.

[Operation] Therefore, even if the device function of the partner terminal is unknown,
Since the voice is temporarily transmitted and the reception procedure of the facsimile transmission procedure is started, the facsimile reception operation can be appropriately performed even when the user of the partner terminal hears the voice and switches to the facsimile function.

In addition, since the answering machine message is also sent to the partner terminal,
On the other hand, the user of the partner terminal can determine appropriately whether to switch to facsimile transmission or to retransmit after canceling the answering machine mode, which is very convenient.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a facsimile apparatus according to one embodiment of the present invention. This facsimile apparatus uses ISDN as a transmission path and has a group 3 facsimile apparatus function, a group 4 facsimile apparatus function, and a telephone call function.

In FIG. 1, a control unit 1 performs an operation control process of the facsimile apparatus, a group 3 facsimile transmission procedure process,
It performs group 4 facsimile transmission procedure processing and call procedure processing of the upper layer. The system memory 2 stores a processing program executed by the control unit 1 and various data necessary for executing the processing program. In addition, it constitutes a work area of the control unit 1.

The parameter memory 3 is used to store various information unique to the facsimile apparatus. The parameter memory 3 may be a non-volatile semiconductor memory device such as an SRAM (static random access memory) backed up by a battery and capable of rewriting data. Become.

The clock circuit 4 is for obtaining the current time information, the scanner 5 is for reading the original image at the resolution set in the group 4 facsimile apparatus, and the plotter 6 is for reading the image in the group 4 facsimile. It is to record and output at the resolution set in the device.

The operation display unit 7 is used for operating the facsimile machine, and includes various operation keys and various display devices such as a liquid crystal display for displaying guidance information to an operator.

The encoding / decoding unit 8 encodes and compresses the image signal by a predetermined encoding method and decodes the image information in the encoded and compressed state into the original image signal. The unit 9 is for mutually converting the pixel densities of the images of the scanner 5 and the plotter 6 when the pixel densities of the images that can be transmitted by the terminal device of the other party are different from each other.

The image storage device 10 is for storing various information such as a transmission image signal, transmission image information, reception image information, and reception image signal.

The ISDN interface circuit 11 is for physically connecting to the ISDN, and the layer 1 signal control unit 12
And a function of integrating / separating a signal of a D channel (signal channel) and a signal of two B channels (information channels).

The D channel transmission control unit 13 uses the D channel to
The CODEC 14 is for performing analog signal / digital data signal conversion processing for transmitting analog signals using the ISDN B channel. is there.

The B channel transmission control unit 15 is for performing layer 2, 3, 4, and 5 transmission control processing in group 4 facsimile transmission control processing using the ISDN B channel (information channel).

The group 3 facsimile modem 16 is for realizing a group 3 facsimile modem function, and is a low-speed modem function (V.21) for exchanging transmission procedure signals.
Modem), and a high-speed modem function (V.29 modem, V.27ter modem) for mainly exchanging image information.

The voice response device 17 outputs, for example, a response voice message signal such as “The facsimile mode is currently set. For a facsimile, press the start button after the beep. For the telephone, please wait for a while. The output signal is group 3
It is applied to the same input terminal of the switch 17 as the transmission signal of the facsimile modem 16.

The switch 18 controls the CODEC 14 by using a group 3 facsimile modem 16 and a voice response device 17, a handset 19 for a telephone call, or a speaker 20 for outputting a ringing tone or the like.
For switching connection to either of the above.

Control unit 1, system memory 2, parameter memory 3,
Clock circuit 4, scanner 5, plotter 6, operation display unit 7,
Encoding / decoding section 8, pixel density conversion section 9, image storage device 1
0, Layer 1 signal control unit 12, D channel transmission control unit 13, C
The ODEC 14, the B channel transmission control unit 15, the group 3 facsimile modem 16, the voice response unit 17, and the switch 18
It is connected to the internal bus 21, and exchange of various information between these elements is mainly performed through the internal bus 21. A hook signal FS indicating a hook state of the handset 19 is transmitted to the control unit 1 via the internal bus 21.
Has been added to

FIG. 2 shows an example of a call control procedure in a circuit switching mode performed by a terminal device connected to ISDN with ISDN.

That is, the originating terminal first sets the circuit switching mode as the transfer mode, and sends a call setup message SETUP specifying the destination terminal to the destination to the ISDN to request a call setup with the destination terminal. A call setup message SETUP is sent to the called terminal to make a call. ISDN also includes a call setup acceptance message CALL_PROC for notifying the call setup status.
To the calling terminal.

Upon detecting an incoming call, the called terminal sends a calling message ALERT to ISDN when the own terminal is ready to receive a call, and the ISDN sends a calling message ALERT to the calling terminal and starts calling the called terminal. Notify.

When the called terminal answers the incoming call, the response message CONN is sent to ISDN.
ISDN sends a response message CONN to the calling terminal to notify that the called terminal has accepted the call.

Also, ISDN sends a response confirmation message CONN_ACK to the called terminal.
To confirm the response of the called terminal, at which point an information channel (B channel) for data transmission is established between the calling terminal and the called terminal.

Thus, data transmission using the information channel is performed between the calling terminal and the called terminal according to the transmission control procedure set for the transmission function of each terminal.

When the data transmission is completed, the originating terminal sends a disconnection message DISC to the ISDN to request release of the information channel, and the ISDN sends a disconnection message DISC to the destination terminal to notify the destination of the restoration of the information channel.

As a result, when the destination terminal responds to the ISDN with a release message REL for notifying the completion of the channel disconnection, the release message REL is transmitted from the ISDN to the calling terminal. When the channel release is completed, the calling terminal sends a release complete message REL_COMP to the IS.
The ISDN sends a release completion message REL_COMP to the destination terminal to notify that fact, and the release of the information channel is established, and the information set between the source terminal and the destination terminal is transmitted. The channel is completely released.

In this way, an information channel is set between the calling terminal and the called terminal, data transmission is performed, and when the data transmission ends, the information channel is released.

As shown in FIG. 3 (a), each message for ISDN call setting includes a protocol identifier for identifying a protocol specification (format, sequence, etc.) for defining a layer 3 call control message, and the message. Call number to identify which call is involved in the message, message type to identify the content of each message, required information elements that are always added to each message, and required for each message And an additional information element added according to. Note that 0, 1, or a plurality of essential information elements are set according to the message type, and 0, 1, or a plurality of additional information elements are arranged according to the situation.

The call setup message SETUP has "transmission capability" as an essential information element as shown in FIG. 3B, and additional information elements such as "calling number", "calling number", "calling subaddress", It has information elements such as “lower layer compatibility”, “higher layer compatibility”, and “user / user”.

 The outline of these information elements will be described.

The "transmission capability" information element uses an information transfer capability indicating whether the content of information to be transmitted is voice, unrestricted digital information, restricted digital information, 3.1KHz audio, 7KHz audio, or video. The switching function includes a transfer mode indicating whether the switching function is a circuit switching or a packet switching, an information transfer speed indicating an information transfer speed, information indicating an information transfer mode, and information indicating a user information protocol.

The "calling number" information element indicates the ISDN number of the calling terminal, and the "calling number" information element indicates the ISDN number of the called terminal. The “destination subaddress” information element is for identifying the intended one of up to eight terminals connected to the same home wiring (passive bus) on the destination side.

However, in this embodiment, a “sub-address” is set for each of the facsimile function and the telephone terminal function, and which function is used by designating the “sub-address” as the content of the “destination sub-address” information element Can be indicated.

The “lower layer compatibility” information element is used for checking communication possibility with the partner terminal, and has the same basic content as the “transmission capability” information element. Further, the "lower layer consistency" information element includes more detailed contents.

The “higher layer compatibility” information element is for use in a consistency check with a partner terminal, and includes, for example, a group
2 / Group 3 facsimile, Group 4 facsimile,
Mixed mode terminals, Teletex, Videotex,
Displays which terminal function is provided among terminal functions such as telex or a message handling system.

With the above configuration, when receiving the call setup message SETUP from ISDN, the control unit 1 executes the processing shown in FIGS. 4 (a) and 4 (b).

That is, first, the information element of the received call setup message SETUP is checked (process 101), and the content of the "transmission capability" information element is "3.1KHz audio", "voice", or "64Kbps, unrestricted". It is checked whether it is "digital" (decisions 102, 103, 104).

The content of the "Transmission capability" information element is "3.1KHz audio"
When the result of the judgment 102 is YES, it is checked whether or not the "high layer compatibility" information element is added and the content is "group 3 / group 2 facsimile" (decision 105).

When the result of the determination 105 is NO, it is checked whether or not the "destination subaddress" information element has been added and the content matches the subaddress for specifying the facsimile function (determination 106).

When the result of the decision 105 is YES and when the result of the decision 106 is YES, the response message CONN is sent to the ISDN
After the call is established and the call is established (process 107), the procedure at the time of the arrival of the group 3 facsimile function is executed (process 108), and the image information is transmitted to the other terminal, and the image information is transmitted. When you finish, start the predetermined line disconnection procedure
The call established with the ISDN is released (step 109).

If the result of the determination 106 is NO, a response message CONN is sent to ISDN to establish a call (processing
110). Group 3 facsimile modem 1 by switch 18
6 and the voice response device 17 are selected, and then the generation of a response voice message signal from the voice response device 17 is started (process 111).

In this state, the procedure signal CNG of the group 3 facsimile procedure is transmitted from the partner terminal and detected, or until the generation of the response voice message signal from the voice response apparatus 17 is completed (NO loop of determinations 112 and 113). ).
The procedure signal CNG is a tone signal, and the group 3 facsimile modem 16 has a detection function.

The partner terminal sends the procedure signal CNG, and the result of decision 112 is
When the determination is YES, the operation of the voice response device 17 is stopped (step 114), and the process proceeds to step 108 to perform the subsequent steps.

In addition, when the generation of the response voice message signal from the voice response device 17 ends and the result of the determination 113 is YES, the process shifts to the process 108 and the subsequent processes are performed.

If the content of the “communication capability” information element is “voice” and the result of the judgment 103 is “YES”, the “high layer compatibility” information element is added and the content is “telephone”.
It is checked whether or not (decision 115).

If the result of the determination 115 is NO, it is checked whether or not the "destination subaddress" information element has been added and its contents match the subaddress designating the telephone terminal function (decision 116).

When the result of the determination 115 is YES, and when the result of the determination 116 is YES, a ringing tone for calling the operator is started from the speaker 20 and a calling message ALERT for ISDN is sent out (process 117). The operator picks up the handset 19 and monitors that the hook signal FS goes off-hook (decision 118).

When the operator goes off-hook and the result of determination 118 is YES, ringing is stopped (step 119) and a response message CONN is sent to ISDN to establish a call (step 12).
0).

As a result, a call is made between the operators, so that the operator goes on-hook and the hook signal FS goes into an on-hook state, receives a disconnection message DISC from ISDN, or a start key (not shown) on the operation display unit 7.
Is operated (NO loop of judgments 121, 122, 123).

If the operator of the terminal itself goes on-hook before the operator of the partner terminal and the result of determination 121 is YES, a disconnection message DISC is sent to ISDN to disconnect the communication path established with the destination terminal. To (processing 12
4) Execute the call release procedure to release the call established with ISDN (process 125), and terminate this process.

If the operator of the partner terminal goes on-hook earlier than the operator of the own terminal, and the result of determination 122 is YES, the process shifts to process 125 to execute the subsequent processes.

When the result of the determination 116 is NO, the process shifts to the process 110 to execute the subsequent processes.

When the content of the “communication capability” information element is “64 Kbps, unrestricted digital” and the result of decision 104 is YES,
It is checked whether the "higher layer consistency" information element is added and its content is "Group 4 facsimile" (decision 126).

If the result of decision 126 is YES, a response message
The CONN is sent to the ISDN to establish a call (process 127), and a predetermined group 4 facsimile procedure is executed to execute image information transmission with the partner terminal (process 128). Then, when the image information transmission is completed, the processing shifts to step 109 to execute the subsequent processing.

Also, when the content of the “transmission capability” information element is neither “3.1 KHz audio” nor “voice” or “64 Kbps, unrestricted digital” and the result of decision 104 is NO, and the result of decision 126 Is NO, the incoming call is ignored (process 129), and this process ends.

As described above, in this embodiment, when an incoming call is detected, whether the partner terminal is a group 3 facsimile terminal, a telephone terminal, or a group 4 facsimile terminal is determined by checking various information elements of the call setup message SETUP. The facsimile function and the telephone terminal function can be used freely by one facsimile machine, and the usability of the function is also improved. Good.

FIG. 5 shows a facsimile apparatus according to another embodiment of the present invention. In this figure, the same parts as those in FIG. 1 and corresponding parts are denoted by the same reference numerals.

This facsimile machine has an answering machine function,
For example, the voice response storage device 22 may say, "I am out of the office. If you want to leave a message, please speak after the beep. Also, because it is in facsimile mode, if you are a facsimile, press START after the beep. Please answer the answering guidance voice message signal, and store the received voice signal.

The input / output terminal of the voice response storage device 22 is connected to the same connection terminal of the switch 18 as the group 3 facsimile modem 16.

With the above configuration, upon receiving the call setup message SETUP from ISDN, the control unit 1 executes the processing shown in FIGS. 6 (a) and 6 (b).

That is, first, the information element of the received call setup message SETUP is checked (processing 201), and the content of the "transmission capability" information element is "3.1KHz audio", "voice", or "64Kbps, unrestricted". It is checked whether it is "digital" (decisions 202, 203, 204).

The content of the "Transmission capability" information element is "3.1KHz audio"
When the result of the judgment 202 is YES, it is checked whether or not the "higher layer consistency" information element is added and the content is "group 3 / group 2 facsimile" (decision 205).

When the result of the judgment 205 is NO, it is checked whether or not the "destination sub-address" information element is added and its contents match the sub-address designating the facsimile function (decision 206).

When the result of the decision 205 is YES and when the result of the decision 206 is YES, the response message CONN is sent to the ISDN
(Step 207), the procedure for receiving a call of the group 3 facsimile function is executed (Step 208), and image information is transmitted to the other terminal, and the image information is transmitted. When you finish, start the predetermined line disconnection procedure
The call established with the ISDN is released (process 209).

If the result of the determination 206 is NO, a response message CONN is sent to ISDN to establish a call (processing
210), Group 3 facsimile modem 1 by switch 18
6 and the voice response storage device 22 are selected, and then the generation of the answering guidance voice message signal from the voice response storage device 22 is started (process 211).

In this state, a procedure signal CNG of the group 3 facsimile procedure is transmitted from the partner terminal and detected, or until the answering guidance voice message signal from the voice response storage device 22 is generated (decision 212). ,twenty one
3 NO loop).

The partner terminal sends the procedure signal CNG, and the result of decision 212 is
When the determination is YES, the operation of the voice response storage device 22 is stopped (step 214), and the process proceeds to step 208 to perform the subsequent processing.

When the generation of the response voice message signal from the voice response storage device 22 ends and the result of the determination 213 is YES, the voice storage operation of the voice synthesis storage device 22 is started (processing 215), and the voice The monitoring is performed until the accumulation time is completed or until the disconnection message DISC is received from ISDN (NO loop of determinations 216 and 217).

The voice storage time of the voice synthesis storage device 22 ends and the
When the result in 216 is YES, the voice storing operation of the voice synthesizing and storing device 22 is stopped, a disconnection message DISC is sent to ISDN (process 218), and a call release procedure is executed to make a call to ISDN. Release (processing 219), and this processing ends.

Also, if the operator of the partner terminal goes on-hook before the voice storage time of the voice synthesis storage device 22 ends, the IS
When the disconnection message DISC is transmitted from the DN and the result of the determination 217 is YES, the process shifts to the process 219 to execute the subsequent processes.

When the content of the “communication ability” information element is “voice” and the result of the determination 203 is YES,
Check if Answering Machine Mode is set (Judge
220). Note that the answering machine mode can be set / released by operating a specific operation key of the operation display unit 7 so that the operator can arbitrarily perform the setting.

Answering machine mode is set and the result of judgment 220 is YES
When it becomes, the process shifts to the process 210 to execute the subsequent processes.

When the result of the judgment 220 is NO, it is checked whether or not the "high layer compatibility" information element is added and the content is "telephone" (decision 221).

When the result of the determination 221 is NO, it is checked whether or not the “subscribed subaddress” information element is added and the content matches the subaddress specifying the telephone terminal function (decision 222).

When the result of the judgment 221 is YES and when the result of the judgment 222 is YES, a ringing sound for calling the operator is started from the speaker 20 and a calling message ALERT for the ISDN is transmitted (step 223). The operator picks up handset 19 and monitors that hook signal FS goes off-hook (decision 224).

When the operator goes off-hook and the result of decision 224 is YES, ringing is stopped (process 225) and a response message CONN is sent to ISDN to establish a call (process 22).
6).

As a result, a call is made between the operators, so that the operator goes on-hook and the hook signal FS goes on-hook, receives a disconnection message DISC from ISDN, or operates the start key of the operation display unit 7. Is monitored (NO loop of judgments 227, 228, 229).

When the operator of the own terminal goes on-hook before the operator of the partner terminal and the result of determination 227 is YES, a disconnection message DISC is sent to ISDN to disconnect the communication path established with the destination terminal. To (processing 23
0), a call release procedure is executed to release the call established with ISDN (process 231), and this process ends.

When the operator of the partner terminal goes on-hook earlier than the operator of the own terminal, and the result of determination 228 is YES, the process shifts to process 230 to execute the subsequent processes.

Further, the meeting for transmitting the image information is completed, the operator turns on the start key, and the result of decision 229 is YES.
When the processing becomes, the processing shifts to processing 208 to execute the processing thereafter.

When the content of the “transmission capability” information element is “64 Kbps, unrestricted digital” and the result of decision 204 is YES,
It is checked whether the "high layer compatibility" information element is added and the content is "Group 4 facsimile" (decision 232).

If the result of decision 232 is YES, a response message
The CONN is sent to the ISDN to establish a call (process 234), and a predetermined group 4 facsimile procedure is executed to execute image information transmission with the partner terminal (process 235). Then, when the image information transmission is completed, the processing shifts to step 209 to execute the subsequent processing.

Also, when the content of the “transmission capability” information element is neither “3.1 KHz audio” nor “voice” or “64 Kbps, unrestricted digital” and the result of decision 204 is NO, and the result of decision 232 Is NO, the incoming call is ignored (process 236), and this process ends.

In this manner, in the present embodiment, even if the answering machine mode is set, if the partner terminal is a facsimile terminal, the facsimile transmission procedure is executed to perform image information transmission, so that the answering machine mode is appropriately set. Can be performed.

Note that the answering machine message stored in the voice response storage device 22 can be notified to the operator through the handset 19 or the speaker 20 by an appropriate method. Also,
It is also possible to allow an operator to listen from outside using ISDN.

By the way, in the above-described embodiment, the group 3 facsimile transmission function and the group 4 facsimile transmission function are provided. However, the present invention can be similarly applied to an apparatus having one of the facsimile transmission functions.

[Effects of the Invention] As described above, according to the present invention, in an ISDN facsimile apparatus using ISDN as a transmission path, voice response means for generating a predetermined terminal identification voice message signal,
Analyzing the contents of the call setup message received at the time of the incoming call detection, if it is determined that the other terminal has a facsimile function, to shift to the G3 incoming procedure, the other terminal is a 3.1KHz audio signal, but G2, If it is determined that the terminal does not have the G3 facsimile function, after responding to the terminal of the terminal identification voice message signal generated by the voice response means, the process proceeds to the G3 receiving procedure, the terminal is a voice signal If it is determined that the terminal does not have the telephone terminal function, the terminal responds to the terminal of the terminal identification voice message generated by the voice response unit to the partner terminal, and then includes control means for shifting to the G3 incoming call procedure. Even if the device function of the terminal is unknown, the voice of the terminal is transmitted temporarily, and the receiving procedure of the facsimile transmission procedure is started, so that the user of the partner terminal listens to the voice, Even when that has switched to Akushimiri function, such an effect that it is possible to perform proper facsimile receiving operation.

Further, in an ISDN facsimile apparatus using ISDN as a transmission line, a voice response storage means for generating a predetermined response voice message signal and storing a voice signal, and analyzing the contents of a call setting message received upon detection of an incoming call, If it is determined that the device has a facsimile function, the process proceeds to the G3 incoming
If it is determined that the voice response signal is a Hz audio signal but does not have a G2, G3 facsimile function, after answering the answering guidance voice message signal generated by the voice response storage unit to the other terminal, the other When voice storage is started and it is determined that the partner terminal is a voice signal but does not have a telephone terminal function, after answering the answering guidance voice message signal generated by the voice response storage means to the partner terminal, Since the control means for starting the voice storage from the partner terminal is provided, the answering machine message is sent to the partner terminal, and the user of the partner terminal,
Since it is possible to appropriately determine whether to switch to facsimile transmission or to retransmit after canceling the answering machine mode, it is possible to obtain a very convenient effect.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a facsimile apparatus according to an embodiment of the present invention, FIG. 2 is a time chart showing an example of a call setup procedure performed between an ISDN and a terminal, and FIG. FIG. 4B is a schematic diagram illustrating a signal format of a message for call setting, FIG. 4B is a schematic diagram illustrating an example of information elements of the call setting message, and FIGS. FIG. 5 is a block diagram showing a facsimile apparatus according to another embodiment of the present invention, and FIGS. 6 (a) and 6 (b) are flow charts showing another example of processing upon detection of an incoming call. . 1 ... Control unit, 2 ... System memory, 3 ... Parameter memory, 16 ... Group 3 facsimile modem, 17 ...
... Voice response device, 18 ... Switch, 22 ... Voice response storage device.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-86674 (JP, A) JP-A-1-177762 (JP, A) JP-A-2-92060 (JP, A) JP-A-1- 233856 (JP, A) JP-A-2-92141 (JP, A) JP-A-2-73762 (JP, A) JP-A-2-15769 (JP, A) JP-A-2-94766 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) H04M 11/00-11/10 H04N 1/00 107

Claims (2)

(57) [Claims] 1. An ISDN facsimile apparatus using ISDN as a transmission line, a voice response means for generating a predetermined terminal identification voice message signal, and analyzing the contents of a call setup message received when an incoming call is detected, and enabling the other terminal to execute a facsimile function. If it is determined that the other terminal has a 3.1KHz audio signal but does not have the facsimile function of G2 and G3, the above-mentioned voice response means After responding to the other terminal with the generated terminal identification voice message signal, the process proceeds to the G3 receiving procedure, and if it is determined that the other terminal is a voice signal but does not have a telephone terminal function, the voice response means ISDN facsimile characterized by comprising a control means for responding to the other terminal with a terminal identification voice message signal generated by the terminal and then proceeding to a G3 receiving procedure. Simiri device. 2. An ISDN facsimile apparatus using ISDN as a transmission line, a voice response storage means for generating a predetermined response voice message signal and storing a voice signal, and analyzing the contents of a call setup message received upon detection of an incoming call. If it is determined that the other terminal has a facsimile function, the process shifts to the G3 incoming procedure, and if it is determined that the other terminal is a 3.1 KHz audio signal but does not have the G2, G3 facsimile function, Responds to the partner terminal with the answering machine guidance voice message signal generated by the voice response storage means, starts voice storage from the partner terminal, and the partner terminal is a voice signal but does not have a telephone terminal function. When it is determined that the answering machine guidance voice message signal generated by the voice response storing means is responded to the partner terminal. , ISDN facsimile apparatus characterized by comprising a control means for starting the voice storage from the remote terminal.