JP3812114B2 - Communication terminal device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a communication terminal device that can efficiently perform facsimile communication or telephone communication using a caller telephone number display service.
[0002]
[Prior art]
In a communication terminal device (for example, a facsimile device) using a telephone line, after the line is closed between the calling side and the called side, the calling side sends the source information such as its own telephone number to the called side. Some have a function of transmitting.
[0003]
[Problems to be solved by the invention]
By the way, Nippon Telegraph and Telephone Corporation (NTT) has been implementing a pilot telephone number display service in a specific area on a trial basis, and this service will be implemented nationwide as “Number Display” from 1998. In this caller telephone number display service, an NTT telephone exchange that has received a connection request from a calling telephone sets the calling telephone number in advance to the called telephone (before the line is closed). And the caller telephone number is displayed on the display provided on the telephone while the handset of the called telephone is kept on-hook. As a result, the called-side user can select whether or not to answer the telephone whose ringing bell is ringing by looking at the displayed caller telephone number.
[0004]
Incidentally, a similar service is already implemented as “Caller-ID” in the North American region. According to the caller ID, as shown in FIG. 5, when an intermittent call signal C1 (oscillation period: 2 seconds / stop period: 4 seconds) is transmitted to the called party based on the calling party's call. During the suspension period of the call signal C1, data related to the telephone number on the calling side is simultaneously provided as a modem signal C2 of 1200 bps. Then, in the communication terminal device on the called side, the modem signal C2 is extracted from the line signal C0 and analyzed, so that the user on the called side knows the telephone number on the calling side before the incoming call (before the line is closed). be able to.
[0005]
An object of the present invention is to provide a communication terminal device capable of making the communication processing after the incoming call in the called communication terminal device more efficient by using the above-described caller telephone number display service. It is in.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, a telephone number detection unit for analyzing a line signal from a telephone exchange at the time of an incoming call and detecting a telephone number on the calling side, and a type of a partner communication terminal corresponding to the partner telephone number are determined. A determination unit; and a storage unit that stores a result of the type determination by the determination unit together with the other party telephone number. The determination unit determines whether the calling side is a non-voice terminal after the line is closed when the telephone number of the calling side detected by the telephone number detection unit is not stored in the storage unit. In the case of a terminal, a first type representing a facsimile device is assigned to the detected telephone number, and if it is not a non-voice terminal, a second type representing a telephone is assigned to the detected telephone number, and the telephone number detection is performed. When the telephone number of the calling party detected by the communication unit is stored as the first type in the storage unit, it is determined whether or not the facsimile communication procedure is established after the line is closed. Comprises a type assigning means for assigning a third type It is a communication terminal device.
[0007]
Note that “at the time of an incoming call” means that a line signal (including a call signal) from the telephone exchange reaches the communication terminal device on the called side, but the telephone line is not closed.
According to the communication terminal apparatus of the first aspect, the telephone number detection unit analyzes the line signal from the telephone exchange when receiving a call and detects the telephone number on the calling side. The determination unit determines the type of the partner communication terminal corresponding to the telephone number. A memory | storage part memorize | stores the result of the classification determination by the said determination part with an other party telephone number. As described above, since the other party telephone number and the corresponding type of the other party communication terminal are stored together in the storage unit, it is detected by the telephone number detection unit at the time of the incoming call before the line is closed. It is possible to determine whether or not the telephone number is already stored in the storage unit. If the detected telephone number matches the one already stored in the storage unit, the type of the calling communication terminal (for example, whether it is a telephone or a facsimile machine) is used as a clue. ) Can be accurately predicted.
[0008]
On the other hand, when the telephone number detected by the telephone number detection unit is not stored in the storage unit, the data amount of the recording unit can be obtained by additionally registering the detected partner telephone number and the type determination result in the recording unit. Can be enriched. Needless to say, the frequency of successful type prediction of the calling communication terminal device is affected by an excessive amount of data stored in the storage unit regarding the other party telephone number and type code.
[0010]
Claim 1 According to the communication terminal device of When the telephone number of the calling party detected by the telephone number detection unit is not stored in the storage unit, Based on the determination as to whether or not the calling party is a non-voice terminal, the telephone number detected by the telephone number detection unit is added to the first type (indicating that it is a facsimile machine) or the second type (that is, a telephone). The detected telephone number and the assigned type are stored as a pair in the storage unit. By repeating the detection of the calling party telephone number, the assignment of the type, and the registration to the storage unit, the amount of data stored in the storage unit will be increased, or the data already stored will always be updated with the latest information. (Renewal) is possible. Also, When the telephone number on the calling side detected by the telephone number detection unit is stored as the first type in the storage unit, A determination is made as to whether or not the facsimile communication procedure can be established, and if the procedure is not established, a third type is assigned to deal with a case where the calling communication terminal apparatus cannot be easily distinguished from either the facsimile apparatus or the telephone. It becomes possible.
[0011]
Claims 1 The determination as to whether or not the terminal is a non-voice terminal and the subsequent assignment of the first or second type is based on the processes of S7, S8, and S18 in the flowcharts of FIGS. . The determination of whether or not the facsimile communication procedure can be established and the provision of the third type are contents conforming to the processes of S22 and S23.
[0012]
Claim 2 The invention of claim 1 In the communication terminal device described, The type determination result stored in the storage unit can be changed by an operation from an operation unit provided in the communication terminal device. It is characterized by that.
[0013]
Claim 2 According to the communication terminal device, the user can change the type stored in the storage unit to manual by an operation from the operation unit. Therefore, the degree of freedom of correspondence corresponding to the situation increases.
[0014]
Profit from this Is Claim 1 In the communication terminal device of Profit Since the user can replace the type by his / her own judgment, it becomes possible for the human side to follow the part where the machine has not succeeded in automatically identifying the type of the calling communication terminal, and the communication terminal device of the present invention The convenience is improved.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a main body 10 of a facsimile apparatus includes a signal processing unit 11 including a central processing unit (CPU), a read-only memory (ROM) 12, and a random access memory as a storage unit that can be written and read. (RAM) 13, reading unit 14, recording unit 15, display unit 16, operation unit 17, monitor speaker 18, modem processor 19, network control unit (NCU) 20, and timer T.
[0016]
The apparatus main body 10 is provided with an attached telephone 31. The attached telephone 31 is provided with a hook switch 31a for detecting whether the handset (so-called handset) is removed (off-hook state) or hooked (on-hook state). The hook switch 31 a provides a hook state detection signal corresponding to the state of the handset to the signal processing unit 11 of the apparatus body 10.
[0017]
The ROM 12 in the apparatus main body 10 stores various control programs for controlling the apparatus main body 10. The signal processing unit 11 controls each unit constituting the apparatus main body 10 according to the various control programs. The signal processing unit 11 includes a determination unit 11a, which determines a telephone number detected by the modem processor 19 and a telephone number registered in the RAM 13 in a specific case as will be described later. In addition to functioning as a number comparison means for comparison, it functions as a type assignment means for assigning a specific type code to the telephone number detected by the modem processor 19 as will be described later.
[0018]
The RAM 13 as a storage unit includes an image data storage unit 13a and an incoming call history storage unit 13b. The image data storage unit 13a is a memory area reserved for temporarily storing received image data and image data read by the reading unit 14. The incoming call history storage unit 13b is a memory area reserved for storing the incoming call history table (see FIG. 4).
[0019]
As shown in FIG. 4, this incoming call history table is made up of columns of “the other party telephone number”, “registration type”, and “latest incoming call date / time”. Yes. “Registration type” indicates whether the partner communication terminal corresponding to the telephone number is a telephone or a facsimile machine. When the partner communication terminal is a facsimile machine, a “FAX” type code (first type code) is recorded, and when the partner communication terminal is a telephone, a “TEL” type code (second type code) is recorded. ) Is recorded, and if the other communication terminal is a telephone / facsimile device, or if it is unclear whether it is a telephone or a facsimile device, the classification code (third classification code) of “TEL / FAX” is To be recorded. The RAM 13 temporarily stores various information other than the image data and the incoming call history.
[0020]
The timer T starts counting based on the start command from the signal processing unit 11 and informs the signal processing unit 11 of the elapsed time thereafter. For example, the timer T measures the elapsed time from the start of a call or detection of a specific signal in an outside line call or the like. The time-up time of the timer T can be set from the signal processing unit 11, and when the elapsed time from the start of the count reaches the set time-up time, the timer T time-ups the signal processing unit 11. A signal to that effect is output.
[0021]
The reading unit 14 reads an image on a document and outputs monochrome binary image data (image data). The recording unit 15 includes an electrophotographic printer, and records received image data and image data read by the reading unit 14 on a recording sheet.
[0022]
The display unit 16 includes a liquid crystal display (LCD) or the like, and displays various information such as the operation state of the apparatus. The display unit 16 can also display data stored in the incoming call history storage unit 13b so that the user can check the contents of the incoming call history table.
[0023]
The operation unit 17 includes various operation keys (not shown) such as a numeric keypad (including * and # keys) 17a for inputting a telephone number and the like, a one-touch dial key, and a start key for starting a facsimile communication operation. ing. In addition, the user can change (rewrite), delete, and add data accumulated in the incoming call history table by key operation of the operation unit 17. For example, the type code “TEL / FAX” currently assigned to the other party telephone number “444-4444” in the incoming call history table of FIG. 4 is changed to either “TEL” or “FAX” at the discretion of the user. be able to. When the other party telephone number is changed, the number related to the change can be changed to a new number by a key operation.
[0024]
The monitor speaker 18 emits a ringing tone and a key press sound in response to a call from a partner terminal via the telephone line L and a key press operation such as a numeric keypad.
The NCU 20 is a kind of line interface for connecting the facsimile apparatus main body 10 and the attached telephone 31 to an external telephone exchange 32 via a telephone line L. The NCU 20 closes and opens the telephone line L, and has a basic function of detecting transmission and reception of dial pulses corresponding to the telephone number and fax number of the partner communication terminal 33 (telephone or facsimile apparatus).
[0025]
When the other communication terminal 33 is calling and calling us (the facsimile machine in this case), the telephone exchange 32 sends a line signal C0 as shown in FIG. 5 to us. As described above, the line signal C0 is composed of the ringing signal C1 having a predetermined oscillation frequency and the modem signal C2 superimposed on the stop period of the ringing signal C1, and the data related to the telephone number on the caller side by the modem signal C2 ( Source information) is conveyed.
[0026]
The NCU 20 includes a call signal detection circuit 21, a transformer 22, a switching circuit 23, and an AC coupling unit 24.
The call signal detection circuit 21 detects a call signal C1 sent from the telephone exchange 32 via the telephone line L to the facsimile apparatus, and notifies the signal processing unit 11 that the call signal C1 has been detected.
[0027]
The transformer 22 is arranged at a so-called folded end portion of the telephone line L, and a primary coil thereof connects the pair of telephone lines L. The secondary coil of the transformer 22 is connected to the modem processor 19. The transformer 22 allows an analog carrier wave (signal) to be exchanged between the telephone line L and the modem processor 19.
[0028]
The switching circuit 23 is provided in the middle of the telephone line L, and closes and opens the telephone line L based on a command from the signal processing unit 11. An AC coupling unit 24 is provided in parallel with the switching circuit 23. The AC coupling unit 24 is a series circuit of a resistor and a capacitor. Even when the telephone line L is opened by the switching circuit 23, the AC analog carrier wave (for example, the line signal C0) is transmitted to the modem processor 19 and the attached telephone 31. Allowing exchanges with the telephone exchange 32 is allowed.
[0029]
The modem processor 19 itself incorporates a CPU, ROM, RAM, and the like (not shown), and can process and analyze signals in a microcomputer manner. The function of the modem processor 19 includes a function for detecting and generating a protocol signal (for example, a CNG signal) necessary for executing a facsimile communication procedure, a function for generating a push tone signal corresponding to the telephone number of the other party, and The modem signal C2 and transmission / reception data are modulated and demodulated. Further, in the modem processor 19, a telephone number detection unit 19a composed of its own CPU, ROM and RAM is constructed. The telephone number detector 19a detects the modem signal C2 from the analog carrier wave (in this case, the line signal C0) provided via the transformer 22, and analyzes the signal to obtain data relating to the telephone number (source information). Is provided to the signal processing unit 11.
[0030]
In this case, in the case where communication is performed with the external communication terminal 33 as the calling side and the facsimile apparatus (10, 31) in FIG. There is a feature in the update. This point will be mainly described with reference to the flowcharts of FIGS. The procedure from S6 (meaning of step 6, the same applies hereinafter) to S17 in FIG. 2 relates to automatic telephone / facsimile switching. Further, the procedure after S20 in FIG. 3 after the affirmative (YES) determination is made in S3 in FIG. 2 relates to incoming call control based on the type code stored in the incoming call history table.
[0031]
First, when the signal processing unit 11 is not performing a transmission operation, the signal processing unit 11 is in a standby state and waits for the call signal C1 to be detected (S1). When the call signal C1 is detected by the call signal detection circuit 21 (that is, an incoming call), the signal processing unit 11 causes the modem processor 19 to capture the modem signal C2 and the telephone number detection unit 19a receives the data of the caller telephone number data. Receive provision (S2). Then, the determination unit 11a (number comparison means) in the signal processing unit 11 compares the provided caller telephone number with each of the other party telephone numbers registered in the incoming call history table, and whether or not there is a match. Is determined (S3).
[0032]
If the caller telephone number does not match any of the other party telephone numbers registered in the incoming call history table, the signal processing unit 11 determines whether or not there is a free memory area in the incoming call history storage unit 13b (that is, in the incoming call history table). It is checked whether there is room for additional registration (S4). When there is no free memory area in the incoming call history storage unit 13b, the signal processing unit 11 deletes the incoming call history data with the oldest time stamp to create a free memory area (S5). For example, if the incoming call history table shown in FIG. 4 is already full, the registration data relating to the other party telephone number “111-1111” of the oldest incoming date and time (January 1st 13:00) is deleted.
[0033]
After the process of S4 or S5, the telephone line L is closed by the switching circuit 23 (S6). Then, the signal processing unit 11 determines whether or not the modem processor 19 has detected a calling tone signal (CNG signal) (S7). The CNG signal is a tone signal of 1100 Hz for 0.5 seconds, and is a signal indicating that the calling side is a non-voice terminal (that is, a facsimile machine).
[0034]
When a CNG signal is detected in S7, the signal processing unit 11 (determination unit 11a) registers the caller telephone number detected in S2 in the incoming call history table together with the type code of “FAX” and its incoming date and time (S8). ). Thereafter, facsimile communication (reception of image data) is performed in accordance with a regular method (S9), and after completion of the communication, the telephone line L is released (S10), and the reception process is terminated.
[0035]
If no CNG signal is detected in S7, that is, if the calling side is a telephone, the signal processing unit 11 causes the monitor speaker 18 to ring a pseudo bell (S11). At the same time, the timer T is started (S12), and it is determined whether or not the attached telephone 31 is off-hook (S13). The determination in S13 is continued until the timer T expires (S13, S14). When the timer T expires, the pseudo bell ringing by the monitor speaker 18 is stopped (S14a).
[0036]
If the signal processing unit 11 detects that the attached telephone 31 is off-hooked by a signal from the hook switch 31a before the timer T expires, the ringing of the pseudo bell from the monitor speaker 18 is stopped (S15). ). Then, the telephone call (S16) using the attached telephone 31 is continued until the attached telephone 31 is on-hooked (S16, S17).
[0037]
After the end of the call in S16 or the time-up in S14, the signal processing unit 11 (determination unit 11a) displays the caller telephone number detected in S2 in the incoming call history table together with the type code of “TEL” and its incoming date and time. Register (S18). Then, the telephone line L is released (S10), and the reception process is terminated.
[0038]
Now, in the determination at S3, when the detected caller telephone number matches any of the other party telephone numbers registered in the incoming call history table, the incoming date and time of the other party telephone number in the incoming call history table is updated (S3a). ). Subsequent reception processing is performed according to the flowchart of FIG. In this case, the signal processing unit 11 (determination unit 11a) first determines whether or not the type code given to the other party telephone number that matches the detected caller telephone number is “FAX” (S20). .
[0039]
If the type code is “FAX”, the telephone line L is closed (S21), and then it is determined whether or not the facsimile communication procedure is established (S22). Whether or not the facsimile communication procedure has been established is determined based on whether or not a digital command signal (DCS signal) has been transmitted from the calling facsimile apparatus. If the facsimile communication procedure is established, facsimile communication (reception of image data) is performed as usual (S9). After the communication is completed, the telephone line L is opened (S10), and the reception process is terminated.
[0040]
On the other hand, if the facsimile communication procedure is not established in S22, the caller telephone number detected in S2 is registered in the incoming call history table together with the type code of “TEL / FAX” and its incoming date and time (S23). In this case, since the facsimile communication cannot be performed because the facsimile communication procedure is not established, the signal processing unit 11 performs the processing from S27 onward so that it can be handled as an incoming call. This will be described later.
[0041]
If the type code is not “FAX” in the determination in S20, the signal processing unit 11 (determination unit 11a) determines that the type code assigned to the other party telephone number that matches the caller telephone number detected in S2. It is determined whether it is “TEL / FAX” (S24).
[0042]
When the type code is “TEL / FAX”, the signal processing unit 11 closes the telephone line L (S25), and determines whether or not the modem processor 19 detects a CNG signal (S26). When a CNG signal is detected in S26, the signal processing unit 11 performs facsimile communication (reception of image data) as usual (S9), opens the telephone line L after the communication is completed (S10), and ends the reception process. .
[0043]
When no CNG signal is detected in S26, the signal processing unit 11 causes the monitor speaker 18 to ring a pseudo bell (S27). At the same time, the timer T is started (S28), and it is determined whether or not the attached telephone 31 is off-hook (S29). The determination in S29 is continued until the timer T expires (S29, S30). When the timer T expires, the ringing of the pseudo bell by the monitor speaker 18 is stopped (S30a).
[0044]
If the signal processing unit 11 detects that the attached telephone 31 is off-hooked by a signal from the hook switch 31a before the timer T expires, the ringing of the pseudo bell from the monitor speaker 18 is stopped (S31). ). Then, the call using the attached telephone 31 (S32) is continued until the attached telephone 31 is on-hooked (S32, S33). When the attached telephone 31 is on-hooked at S33 and when the timer T expires at S30, the signal processing unit 11 releases the telephone line L (S10) and ends the reception process.
[0045]
Note that the processing from S25 to S33 in FIG. 3 is a standby operation for telephone or facsimile communication when the registration type is “TEL / FAX”.
In the determination in S24, if the type code assigned to the other party telephone number that matches the caller telephone number detected in S2 is not “TEL / FAX”, that is, the type code is “TEL” ( If so, the signal processing unit 11 causes the monitor speaker 18 to ring a ringing bell (S34), and determines whether the attached telephone 31 is off-hook (S35).
[0046]
In S35, when the signal processing unit 11 detects that the attached telephone 31 is off-hook by a signal from the hook switch 31a, the ringing of the calling bell is stopped (S36), and the telephone line L is closed (S37). ). Then, the call using the attached telephone 31 (S32) is continued until the attached telephone 31 is on-hooked (S32, S33). When the attached telephone 31 is on-hooked in S33, the signal processing unit 11 releases the telephone line L (S10) and ends the reception process.
[0047]
If the signal processing unit 11 cannot detect the off-hook of the attached telephone 31 in S35, the signal processing unit 11 determines whether the call signal C1 is intermittently received (S38). As long as the call signal C1 is intermittently received, the signal processing unit 11 repeats the determination of S35 (S35, S38). On the other hand, when the intermittent reception of the calling signal C1 is interrupted, the signal processing unit 11 determines that the sending of the calling signal C1 from the telephone exchange 32 has stopped, and stops ringing of the calling bell (S39). . In this way, the reception process is terminated without closing the line.
[0048]
The embodiment described in detail above has the following effects.
The determination unit 11a of the signal processing unit 11 in this communication terminal device serves as a type assigning unit, assigning an appropriate type code to the telephone number detected by the telephone number detecting unit 19a at the time of incoming call, Is stored as appropriate. For this reason, this communication terminal device can autonomously enhance the amount of data stored in the incoming call history storage unit 13b in the RAM 13 serving as a storage unit, or can always update the already stored data with the latest information.
[0049]
By using the incoming call history table in the RAM 13 as a storage unit, the type of the partner communication terminal can be grasped to some extent accurately based on the calling party telephone number detected by the telephone number detection unit 19a at the time of the incoming call. .
[0050]
The user of this communication terminal device can freely change the type code in the incoming call history table by his / her own intention through the operation from the operation unit 17. Therefore, the registration type in the incoming call history table is always appropriate, and the efficiency of the reception process can be improved. In addition, the convenience of the communication terminal device can be improved by enabling the setting change of the type code.
[0051]
In addition, the said embodiment can also be changed and actualized as follows.
In the above embodiment, when the calling communication device is a facsimile device, the facsimile communication is performed without ringing (S3, S4, S6, S7, S8 and S9, S3, S3). S20, S21, S22 and S9, and the flow of S3, S20, S24, S25, S26 and S9). In this case, automatic ringing may be performed while ringing a pseudo bell.
[0052]
In the above embodiment, three types of type codes are used. However, the fourth, fifth, or sixth type codes may be prepared according to the increase in the types of communication terminal devices using the telephone line L.
[0053]
The technical ideas other than those described in the claims that can be grasped from the disclosed items include the following.
(Supplementary note 1) In the communication terminal device according to any one of claims 1 to 3, the determination unit is a partner telephone in which the calling party telephone number detected by the telephone number detection unit is stored in the storage unit And a number comparison means for determining whether or not the number matches, and if both match, if the type assigned to the matched telephone number is the first type representing the facsimile apparatus, the facsimile When a call is automatically received as communication, and the type assigned to the matched other party telephone number is the second type representing a telephone, the call bell is ringed from the monitor speaker without closing the line (see FIG. 2 S3, see S20, S21, S22, S24, S34 in FIG. 3).
[0054]
According to this configuration, it is possible to quickly respond to a communication request from the calling side.
Supplementary Note 2: In the communication terminal device according to any one of claims 1 to 3 and Supplementary Note 1, it is determined whether or not the calling side is a non-voice terminal after the line is closed, and the calling side is a non-voice terminal Includes a signal processing unit that automatically performs facsimile communication and causes a pseudo bell to ring from a monitor speaker when the calling side is not a non-voice terminal (see S7, S8, and S11 in FIG. 2).
[0055]
According to this configuration, it is possible to quickly respond to a communication request from the calling side.
(Supplementary note 3) In the communication terminal device according to claim 2 or 3, the type assigning means determines whether the calling side is based on whether or not a modem processor connected thereto detects a calling tone signal (CNG signal). It is determined whether or not the terminal is a non-voice terminal (see S7 in FIG. 2 and S26 in FIG. 3).
[0056]
According to this configuration, the type of the calling communication terminal can be easily determined using the CNG signal from the telephone exchange.
[0057]
【The invention's effect】
Claim 1, 2 According to the described invention, since the telephone number detection unit, the determination unit, and the storage unit are provided in the communication terminal device, the type of the calling communication terminal device is set to a certain frequency at the time of the incoming call before the line is closed. As a result, the communication processing after closing the line can be performed quickly and efficiently.
[0058]
Also, Claim 1, 2 According to the described invention, since the determination unit of the communication terminal device includes the type assigning unit, it is possible to appropriately store these in the storage unit while assigning an appropriate type to the telephone number detected at the time of the incoming call. . Accordingly, the amount of data stored in the storage unit can be increased, or the data that has already been stored can be constantly updated with the latest information, and the capability of the communication terminal apparatus can be increased autonomously.
[0059]
Claim 2 Since the type in the storage unit can be changed by an operation from the operation unit provided in the communication terminal device, the degree of freedom in correspondence according to the situation increases and the user can Convenience when using the communication terminal device is enhanced.
[Brief description of the drawings]
FIG. 1 is a block circuit diagram of a facsimile apparatus according to an embodiment.
FIG. 2 is a flowchart (first half) showing a processing procedure after an incoming call.
FIG. 3 is a flowchart (second half) showing a processing procedure after an incoming call.
FIG. 4 is an incoming call history table.
FIG. 5 is a diagram showing an outline of a line signal in a caller telephone number display service.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... The main body of a facsimile machine, 11 ... Signal processing part, 11a ... Judgment part (comprising a classification provision means and a number comparison means), 13 ... RAM (composing a memory | storage part), 13a ... Image data storage part, 13b ... Incoming call history storage unit, 17 ... operation unit, 19 ... modem processor, 19a ... telephone number detection unit, 31 ... attached telephone (10 and 31 constitute a communication terminal device), 32 ... telephone exchange, C0 ... line signal, C1 ... Paging signal, C2 ... Modem signal.

Claims (2)

A telephone number detector that detects the telephone number of the calling party by analyzing the line signal from the telephone exchange when an incoming call is received, a determination part that determines the type of the partner communication terminal corresponding to the partner telephone number, and the partner telephone number And a storage unit for storing the result of the type determination by the determination unit ,
The determination unit
When the telephone number on the calling side detected by the telephone number detection unit is not stored in the storage unit, it is determined whether or not the calling side is a non-voice terminal after the line is closed. A first type representing a facsimile device is assigned to the telephone number, and if it is not a non-voice terminal, a second type representing a telephone is assigned to the detected telephone number;
If the calling party telephone number detected by the telephone number detection unit is stored in the storage unit as the first type, it is determined whether the facsimile communication procedure is established after the line is closed; A communication terminal device comprising a type assigning means for assigning a third type if not established. The result of the type determination stored in the storage unit is
The communication terminal device according to claim 1, which can be changed by an operation from an operation unit provided in the communication terminal device.

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