JPS62185444A - Digital telephone set - Google Patents

Abstract

PURPOSE:To allow a caller telephone set to recall in one-touch simply by providing the storage means of a caller number, a toll number eliminating means comparing the caller number with its own preset toll number and eliminating the toll number from the caller number when the comparison result is identical and a dial sending means sending a dial signal based on the caller number via the toll number eliminating means. CONSTITUTION:A caller number via a network control means 13 is written in a caller number memory in a RAM 9 by a central processing means 19. A station number eliminating means 17 reads the caller number from the RAM 9 and compares the number with its own toll number. When both toll numbers are coincident, the toll number is eliminated from the caller number and the result is written in the sending number memory of the RAM 9. When the talking by the incoming call is finished and dialing is applied to the talking party from the incoming side, a return dial switch 12 is depressed. A switch detection means 14 detects the said depression and gives a signal to the central processing means 19. A dial sending means 18 receives a sending number stored in the RAM 9 to send a dial signal.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a digital telephone that digitally encodes and transmits voice.

[Prior Art] In recent years, in order to improve the quality of calls and to enable simultaneous voice and data calls, digital telephones have appeared that can digitally encode and transmit voice and display the number of the other party when a call is received. There is.

FIG. 4 is a block diagram of a conventional digital telephone.
1) is a digital subscriber line, which is a transmission path for digital signals. (2) is the line interface section that terminates at the subscriber line, and (3) is the frame decomposition of the received signal from the line interface section (2), which converts the received signal from the line interface section (2) into audio signals (8) for telephone calls.
, a network, a frame assembly/disassembly unit for separating and assembling the control signal (D); (4) converting the digital signal of the audio signal (B) into an analog signal, and conversely, converting the audio analog signal into a digital signal; codec to be converted; (5) is a handset; (6) is a transmitter; (7) is a processing unit composed of a microprocessor that processes network control signals (D), display processing, and key capture processing; 8) is ROM,
(9) is a RAM, (10) is a keyboard such as dial buttons, and (11) is a display unit that displays dial number 9 and the like.

Figure 5 shows the configuration of the sending/receiving data transmission frame, including the II signal (F), the voice signal (B), and the network control signal (
D).

FIG. 6 shows a sequence diagram of outgoing calls and @ calls by the digital telephone.

Next, the call operation from receiving a call will be explained.

Call from telephone (I) in Figure 6! When you make a call to II (II) (explanation of network control operations between telephone (I) and exchange will be omitted), the exchange will call! Sends an incoming call signal to l(I[). This incoming call signal is inserted into the network control signal (D) of the frame.

The frame signal t from the digital subscription name I (1) is terminated at the line interface section (2), and is transmitted from the transmission path code to N
Converted to RZ code. The frame assembly/disassembly section (3) disassembles the frame signal shown in FIG.
), extract the network t, II all signal (D). The network control signal (D) is sent to a processing section (7), where a judgment process for an incoming call signal is performed.

The processing unit (7) sends out a confirmation signal in response to the @call signal. This confirmation signal is inserted into the network control signal (D) slot in the frame by the frame assembly/disassembly unit (3), and then sent to the digital subscriber line (2) via the line interface unit (2).
1).

When the exchange receives the confirmation signal, it sends out an in-home confirmation signal from the telephone (I) and the calling party number. When the processing section (7) receives this signal and number, it generates a ringtone and displays the calling party's number on the display section (11) to notify the incoming call. When the user picks up the transmitter/receiver in response to this, a response signal is sent out and the user enters a talking state.

[Problems to be Solved by the Invention] Since the conventional digital telephone is configured as described above, it is possible to display the calling party number when receiving a call, but it is not possible to memorize this number. It was not possible to call back or return dial the caller.

Therefore, when the call ends and you want to call again, it is necessary to look up the number and dial again. In addition, with a digital telephone equipped with a network function that can handle both voice and data, when the called party makes a data communication call to the same party during a voice call, the caller number displayed on the There was a problem in that it required dialing and dial operation was troublesome.

This invention was made to solve the above-mentioned problems, and an object of the present invention is to provide a digital telephone that allows a caller to make a call from a called digital telephone to a calling digital telephone with a single touch.

[Means for Solving the Problems] A digital telephone according to the present invention has a storage means for storing a calling number, and a dialing means for dialing the stored calling number with a single touch. be.

[Function] The digital telephone according to the present invention stores the calling number including the area code sent from the network side, and uses this area code as the preset own area code. If they are the same, a dialing number is generated by removing the toll number from the calling party's number, and by pressing a return dial switch that commands dialing, the dialing number is dialed to the network side.

[Embodiment 1 of the Invention Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, in which the same parts as in FIG. 4 are given the same reference numerals,
(12) is a return dial switch for sending dials, and (13) is a network υ that processes network control signals (D).
J IIl 51! (14) is a switch press detection means for detecting the press of the return dial switch (12); (15) is a keyboard processing means for performing the input processing of the keyboard (10); (16) is a display unit (11); ) Display processing means (17) deletes the area code from the calling number when the calling number from the network and the own area code are the same, and displays the outgoing number. (18) is a dial sending means that dials the above-mentioned sending number; (19) is a central processing means that controls each of the above means; processing is carried out by these means (13) to (19). It constitutes part (7).

FIG. 2 is a storage format diagram of calling number, etc. stored in ROM (8) and RAM (9), where (a) is the stored content of the own number, and (b) is the stored content of the calling number. , (C) are the stored contents of the sending number.

FIG. 3 is a processing flow diagram of calling party number, etc., and the operation will be explained based on this processing flow diagram.

First, the user sets his own telephone number, including his own long-distance F4 number, in advance as shown in FIG. 2(a). This includes pressing down on the keyboard (10), keyboard processing means (15) for processing this pressing, and medium heat processing means (1
9).

Next, when the calling party number is sent from the network in response to an incoming call, the calling party number that has passed through the network control means (13) is stored in the calling party number memory of the RAM (9) by the central processing means (19). ni m
Step (3-1°3-2).

The station number deletion means (17) reads out the previously stored calling party number from the RAM (9) via the central processing means (19) and compares it with its own toll number (step 3-3).

When both city numbers match, send! 'f'? Delete the area number from number 3 and write it to the sending number memory of RAM (9) as shown in Figure 2 (C) (step 3-4)
. If there is a mismatch, the calling party number is written as is into the sending number memory (step 3-5).

Next, when the incoming call ends and the called party wants to dial the current party, the return dial switch (12) is pressed (step 3-6). The switch detection means (14) detects this press, and the central processing means (
19) (step 3-7). The dial sending means (18) receives the sending number stored in the RAM (9) via the central processing means (19) and performs dial sending (step 3-8).

With the above operations, when a call is received, the calling party signal sent from the network side can be automatically stored, and by pressing the return Daicel switch, the calling party number can be read out and sent out as a Daicel.

Although omitted in the above operation description, when a call is received or when a call is made, the calling party number and the sending number are displayed on the display section via the display processing means, thereby configuring an easy-to-use telephone set.

In the above embodiment, one calling party number memory is provided, but a plurality of calling party number memories may be arranged. Further, in the above embodiment, the area code deletion means (17) was automatically activated, but an external deletion switch is provided, and when this switch is pressed, the area code deletion means (17) is activated. You can also do it like this.

[Effects of the Invention] As described above, according to the present invention, a digital telephone has a calling number storage means, compares this calling number with its own area number set in advance, and when they are the same, makes a call. The telephone line of the calling party is This has the effect of allowing you to easily call back with just one touch.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing a digital telephone according to an embodiment of the present invention, FIG. 2 is a storage format diagram for caller i, etc., and FIG.
4 is a block diagram showing a conventional digital telephone, FIG. 5 is a diagram showing the structure of a transmission frame, and FIG. 6 is a diagram showing the outgoing and incoming call sequences. In the figure, (7) is a processing unit, (8) is a telephone number memory (ROM), (9) is a calling number memory (RAM), -
(12) is a return Daicel switch, (17) is an area code deletion means, and (18) is a dial sending means. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] When a call is received, a digital telephone that can display the calling party number including the area code sent by the network on the called side,
a calling number memory for storing the calling number; a telephone number memory for storing the telephone number including the own area code; a return dial switch for instructing dialing; and the calling number memory. an area code deletion means for comparing the calling area code stored in the local area code with the own area code and deleting the calling area code when they are the same; 1. A digital telephone set comprising dial sending means for dialing a caller number passed through the network to the network side by pressing the return dial switch.