JP3567858B2 - Communication terminal device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a communication terminal device having a transfer function.
[0002]
[Prior art]
A function (call transfer function: voice warp) of transferring a call received from one's own telephone to another telephone has been realized. As an embodiment of such a transfer function, an unconditional transfer mode in which an incoming call is directly transferred to a predetermined transfer destination without ringing a bell, and a predetermined transfer destination A non-response transfer mode in which a call is forwarded to a non-response, and a post-response transfer mode in which a telephone once answered is transferred to a predetermined transfer destination.
[0003]
By the way, a normal telephone call may be made to a facsimile machine having an attached telephone. In such a case, conventionally, an alarm signal is transmitted to an attached telephone to ring the bell of the telephone.
[0004]
[Problems to be solved by the invention]
Such a conventional facsimile apparatus has a problem that a dedicated circuit for sending an alarm signal to ring a telephone bell and call is required.
[0005]
The present invention has been made in view of such circumstances, and provides a communication terminal device capable of calling a telephone when a normal telephone call is received without using a conventional dedicated circuit for calling. The purpose is to do.
[0006]
[Means for Solving the Problems]
A communication terminal device according to the present invention is a communication terminal device having a communication transfer function via an exchange , wherein a terminal device main body and a telephone to which a first line and a second line having different telephone numbers are respectively assigned, Means for transmitting a telephone number of the second line to the exchange via the first line, when a signal indicating that the communication is from a non-voice terminal is not received when the line is received; Means for determining whether or not the second line is in use, performing transfer to the telephone when the second line is not in use, and performing transfer to the telephone when the second line is in use. The feature is that it is not performed .
[0009]
In the communication terminal device of the present invention , for example, a plurality of ISDN lines are used, and a signal (for example, a CNG signal) indicating that communication is from a non-voice terminal when the first line on the terminal device body side is received. Is not received, the telephone number of the second line of the attached telephone to be transferred to is transmitted to the exchange via the first line. This eliminates the need for a dedicated circuit for calling as in the prior art, and enables high-speed and efficient transfer when a normal telephone call is received. Further, it is determined whether or not the second line is in use. If the second line is not in use, transfer is performed. If the second line is in use, transfer is not performed. Therefore, when the device is in use, no wasteful transfer is attempted and the process is efficient.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be specifically described with reference to the drawings showing the embodiments.
FIG. 1 is a block diagram showing a configuration of a facsimile machine 20 as a communication terminal device of the present invention. The facsimile apparatus 20 includes a main control unit 1, a reading unit 2, a recording unit 3, a display unit 4, an operation unit 5, a ROM 6, a RAM 7, an image memory 8, a timer 9, a modem 10, a DSU (Digital Service Unit) 11, and an attached unit. The telephone 12 is provided.
[0013]
The main control unit 1 is specifically constituted by a CPU, is connected to the above-described hardware units of the facsimile machine 20 via the bus 13, controls these units, and is stored in the ROM 6. Performs various software functions according to a computer program.
[0014]
The reading unit 2 reads a document with a scanner using a CCD, for example, and outputs dot image data. The recording unit 3 is an electrophotographic printer device, and prints out image data received by facsimile communication or image data of a document read by the reading unit 2 as a hard copy.
[0015]
The display unit 4 is a display device such as a liquid crystal display device or a CRT display, and displays the operation state of the facsimile device 20, and displays image data of a document read for transmission or received image data. The operation unit 5 includes character keys, numeric keys, speed dial keys, one-touch dial keys, various function keys, and the like necessary for operating the facsimile machine 20. It should be noted that some or all of the various keys of the operation unit 5 can be substituted by using the touch panel type as the display unit 4.
[0016]
The ROM 6 stores various software programs necessary for the operation of the facsimile machine 20 in advance. The RAM 7 is composed of an SRAM, a flash memory, or the like, and stores temporary data generated when executing software. The image memory 8 is composed of a DRAM or the like, and stores image data to be transmitted or received image data. The timer 9 measures a predetermined time.
[0017]
The modem 10 has a D / A conversion / A / D conversion function and a facsimile communication function. The DSU 11 is hardware for performing the operation of connecting and disconnecting the ISDN line L with the exchange 30 in the digital network (ISDN), and connects the modem 10 to the digital network as needed. The telephone 12 is connected to the modem 10 and is used during a normal call.
[0018]
The facsimile apparatus 20 is assigned two ISDN lines having different telephone numbers. One of the two lines is used for transmitting and receiving image data in facsimile communication, and the other second line is normally used by the telephone 12. Used when calling.
[0019]
In the facsimile apparatus 20 of the present invention, when an incoming call is received on the first line, the communication is not image data communication, that is, when the communication is normal telephone communication, the first line for the telephone 12 is used by using the first line. The telephone numbers of the two lines are transmitted to the exchange 30, and the telephone 12 is called to perform the transfer.
[0020]
Next, the operation will be described. FIG. 2 is a flowchart showing the procedure of the processing operation of the facsimile machine 20.
[0021]
When the main control unit 1 detects an incoming call from an arbitrary transmission source on the first line (step S1: YES), the transmission signal from the transmission source indicates that the calling station is a non-voice terminal. It is determined whether or not the indicated CNG signal (call tone) is included (step S2). When the CNG signal is included (S2: YES), since the communication is the image data, the main control unit 1 receives the transmitted image data (step S11).
[0022]
When the CNG signal is not included (S2: NO), the main controller 1 determines whether the second line is in use (step S3). When not in use (S3: NO), the main controller 1 hooks the first line (step S4) and dials the telephone number of the second line via the first line (step S5). If the second line is in use (S3: YES), the main control unit 1 transmits a message "Absent. Please call again later" to the transmission source (step S10).
[0023]
Then, the main control unit 1 determines whether or not there is a response to the dial call in S5, in other words, whether or not the second line has gone off-hook (step S6). This determination of the presence or absence of the response is repeated within a predetermined time measured by the timer 9 (step S8: NO). When there is a response within the predetermined time (S6: YES), the main control unit 1 releases the first line (step S7). Thus, the transfer to the telephone 12 is completed.
[0024]
If there is no response from the second line within a predetermined time (S8: YES), the main control unit 1 releases the hooking of the first line (step S9), and "is absent. Please call again later." Is transmitted to the transmission source (step S10).
[0025]
In the above-described example, the facsimile apparatus is provided with an attached telephone, and an external telephone is transferred to the telephone. However, different from this example, different telephone lines (telephone numbers) are used. The present invention is similarly applicable to a configuration in which a facsimile apparatus and a normal telephone are provided side by side and communication processing is performed independently of each other instead of using a common modem and DSU as in the above example. Of course, it can be applied.
[0026]
【The invention's effect】
As described above, according to the present invention, when a signal (CNG signal) indicating communication from a non-voice terminal is not received after the line is closed at the time of an incoming call, the telephone number of the telephone is transmitted to the exchange. Thus, the transfer to the telephone is performed, so that a normal telephone can be easily transferred to a predetermined telephone. At this time, a conventional dedicated circuit for calling the telephone is not required, and the calling can be easily performed.
[0027]
Further, in the present invention, a plurality of ISDN lines are used, and when the first line is received, the telephone number of the second line as the transmission destination is transmitted to the exchange via the first line. Transfer can be performed efficiently.
[0028]
Further, according to the present invention, it is determined whether or not the second line is in use, and if the second line is in use, the transfer is not performed. Can be efficiently prevented.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a facsimile apparatus of the present invention.
FIG. 2 is a flowchart showing a procedure of a processing operation of the facsimile apparatus of the present invention.
[Explanation of symbols]
1 Main control unit 6 ROM
7 RAM
8 Image memory 10 Modem 11 DSU
12 telephone 20 facsimile machine 30 exchange

Claims (1)

In a communication terminal device having a communication transfer function via an exchange, a terminal device main body and a telephone to which a first line and a second line having different telephone numbers are respectively assigned, and a non-voice terminal when receiving the first line. Means for transmitting a telephone number of the second line to the exchange via the first line, and determining whether the second line is in use, if no signal indicating communication is received; Means for transferring to the telephone when the second line is not in use, and not transferring to the telephone when the second line is in use. Communication terminal device.

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