KR19980074589A - How to distinguish a call type from a fax machine with a mobile device - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

The present invention relates to a method for distinguishing a trunk line call from an extension call in a dual-use fax machine having a portable device.

I. The technical problem to be solved by the invention

The user can be distinguished from CO line calls and extension calls.

All. Summary of Solution of the Invention

The ringing sound that is output when there is a trunk line call and when there is an extension call enables the user to distinguish the type of call even when the ringing sound is heard.

la. Important uses of the invention

It is used to distinguish between a CO line call and an extension call in a dual-use fax machine having a portable device.

Description

How to distinguish a call type from a fax machine with a mobile device

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wireless telephone combined fax, and more particularly, to a method of distinguishing call types in a wireless telephone combined fax.

In general, a facsimile machine combined with a cordless phone enables facsimile message transmission, reception or telephone call between facsimile machines as well as a facsimile body and a mobile device. Therefore, the combined fax machine outputs a ring to the main body and the mobile device as in the case of a CO line call even when there is an extension call. In the above, the extension call refers to a call for a telephone call between the facsimile body and the portable device, and the trunk line call refers to a fax message transmission or a call for the other party's facsimile through the telephone line.

However, the conventional wireless telephone combined fax has output the same ring sound when there is a C.O.line call or an extension call. For this reason, the user was uncomfortable because he could not distinguish between a CO line call or an extension call only by listening to the ring sound.

As described above, the conventional ring tone is output regardless of the type of call when there is a CO line call or an extension call in the dual-purpose fax machine. Therefore, there is a problem in that the user cannot distinguish between a CO line call or an extension call.

Accordingly, an object of the present invention is to provide a method for allowing a user to easily distinguish whether a call is a trunk line call or an extension call even if only the ring sound is heard.

1 is a block diagram of a conventional wireless telephone combined use fax having a portable device;

2 is a flow chart for processing a trunk line call in a dual-use fax machine according to an embodiment of the present invention;

Figure 3 is a flow chart for processing an extension call in a dual-use fax machine according to an embodiment of the present invention.

The present invention for achieving the above object is characterized in that the ring sound is output when the call and the extension call.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Many specific details are set forth in the following description and in the accompanying drawings to provide a more general understanding of the invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

First, referring to FIG. 1 showing a block diagram of a conventional wireless telephone combined fax machine to which the present invention is applied, the wireless telephone combined fax machine includes a portable device 30 for a wireless telephone separately from the main body 28. The central processing unit 10 of the main body 28 controls the operation of the facsimile including the portable device 30 according to the program stored in the memory unit 18. The memory unit 18 stores an operation program, a protocol control program, and various reference data of the central processing unit 10, and temporarily stores data according to program execution of the central processing unit 10. An operating panel (hereinafter referred to as an OPE) 14 has a plurality of numeric keys, function keys, and a display device, and applies key data according to key input to the central processing unit 10 and the central processing unit 10. The various states of the fax are displayed under the control of. The scanner 16 scans an original or a document and outputs image data according to the original image. Image data output from the scanner 16 is processed by the central processing unit 10 and stored in the memory unit 18 and transmitted by a modem (modulator-demodulator) 22 or printed by the printer 20. Is output. The modem 22 modulates the output data and the image data of the central processing unit 10 into an analog signal and transmits them to the telephone lines T and R through the LIU (Line Interface Unit) 24. Demodulate the analog signal received from R). The LIU 24 forms a line between the telephone lines T and R and the modem 22 under the control of the central processing unit 10, and detects ring signals received through the telephone lines T and R. Inform the central processing unit 10. The printer 20 prints an image under the control of the central processing unit 10. The sensor unit 12 detects a state of each part of the facsimile, including the remaining amount of recording paper, the facsimile message detection, and provides the central processing unit 10. The wireless portable device connection unit 26 modulates a voice signal and a data signal into a radio frequency (RF) signal under the control of the central processing unit 10, and transmits it to the portable device 30 through an antenna and is received through the antenna. The RF signal of the device 30 is demodulated into a voice or data signal.

The wireless telephone combined fax machine outputs the same ring sound regardless of whether the call is a trunk line call or an extension call. Accordingly, there is a problem that the user can not distinguish between a call or an extension call only by listening to the ring sound.

In order to solve the above problems, a flow chart for outputting ring sounds differently in a combined fax machine according to an embodiment of the present invention is divided into a case of a trunk line call and an extension call, respectively, as shown in FIGS. 2 and 3. Shown. The operations according to the flowcharts of FIGS. 2 and 3 are programmed in the memory unit 18 to be performed by the CPU 10 of FIG. 1.

First, when there is a trunk line call, the CPU 10 checks whether a ring signal is received through the LIU 24 in step 200 of FIG. If no ring signal is received, the central processing unit 10 continues to stand by. In contrast, if a ring signal is received in step 200, the ring signal is detected by the LIU 24, and the LIU 24 notifies the CPU 10 of the reception of the ring signal. Then, the central processing unit 10 proceeds to step 202 in response to this in step 200 of FIG. 2 to control the modem 22 as in the usual case, to turn on the ring, and to connect the wireless portable device 26. Wirelessly transmits a command to the portable device 30 to turn on the ring. Accordingly, a tone signal of a preset frequency is generated from the modem 22 and applied to the LIU 24 to output the first ring sound from the main body 28 and the portable device 30. At this time, if the user hooks off the telephone or portable device attached to the main body in response to the first ring sound output in step 202, the hook-off is detected in the LIU 24 and the LIU 24 is hooked. The CPU 10 is notified of the detection of the OFF. In response to this in step 204 of FIG. 2, the CPU 10 returns to the routine for receiving the other party's facsimile and facsimile messages or making a phone call as in the normal case. Unlike this, if the central processing unit 10 does not detect the hook-off in step 204, the process returns to step 202 again and continues to output the first ring sound.

Unlike the above, when there is an extension call, the central processing unit 10 checks whether there is a call from the main body 28 to the portable device 30 in step 300 of FIG. 3 or through the wireless portable device connection unit 26. Check if there is a call from 30. If there is no call from the main body 28 or the portable device 30, the central processing unit 10 remains in a standby state. On the contrary, if there is a call from the main body 28 or the portable device 30 in step 300 of FIG. 3, the central processing unit 10 controls the modem 22 in step 302 of FIG. Turn on the ring. At this time, the frequency of the tone signal generated from the modem 22 and applied to the LIU 24 is set differently from that of the trunk line call. Accordingly, a second ring sound different from the first ring sound output in step 202 of FIG. 2 is output to the main body 28 or the portable device 30. At this time, if the user hooks off the telephone or portable device attached to the main body in response to the second ring sound output in step 302, the hook-off is detected in the LIU 24 and the LIU 24 hooks. The CPU 10 is notified of the detection of the OFF. The CPU 10 then returns to the routine for an extension telephone call between the main body 10 and the portable device 30 as in the normal case in step 304 of FIG. On the contrary, if the central processing unit 10 does not detect the hook-off in step 304, it returns to step 302 again and continues to output the second ring sound.

Therefore, by changing the ring sound, the user can easily distinguish whether a call is a trunk line call or an extension call only by listening to the ring sound.

As described above, the present invention outputs a ringing sound when the combined fax machine is a CO line call or an extension call, so that the user can distinguish whether a CO line call or an extension call is made by listening to the ring sound. We can plan sex.

Claims (1)

In the wireless telephone combined use fax machine having a portable device, A method for distinguishing call types, characterized by outputting ring sounds differently when making a CO line call or when making an extension call.