JPS63204853A - Digital telephone set - Google Patents

Abstract

PURPOSE:To attain quick correspondence to an absence incoming call by storing a caller number at the absence call and using a simple operation by a telephone set at a visiting place or at a remote location so as to apply transfer connection to the telephone set of the caller number. CONSTITUTION:In a channel B2, with the presence of a call command from a channel B1, a caller number stored in a caller ID storage memory 24, i.e., a caller number received in the absence is set as a caller dial number and dialing is given to the telephone set having the caller number. When the opposite party replies, the channels B1, B2 are connected by the operation of the channel switch circuit 23. Through the channel connection, the telephone set at a visiting place and the caller telephone set making a call during the absence are connected to attain the communication.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a digital telephone connected to a digital network (ISDN) having a plurality of information channels, and particularly relates to transfer of missed calls. It is something.

[Prior Art] As a conventional digital telephone compatible with I5DN, there is one shown in FIG. 3, for example. This is IEICE Technical Report SE85
-92.

In the figure, the l5DN (1) is connected to the line interface (I/F) circuit (2), and the information channels (B, ), (B2) and signal channel (D) are multiplexed and output. It has become so.

The line 1/F circuit (2) has an information channel (B),
(B2) and the signal channel (D), which is used to separate and multiplex the information channel (B1).

(B2) is connected to the switch section (3), and the signal channel (D) is connected to the central processing unit (4). The switch section (3), based on the instructions from the central processing unit (4),
Information channel (B1).

(B2), a codec (5), and a data interface (hereinafter referred to as data I/F) (6).

Next, the codec (5) is connected to an audio circuit (7), and the audio circuit (7) is connected to a receiver (8) and a transmitter (9).
) are connected to each other. The audio circuit (7) is also connected to the I10 controller (10) in addition to the central processing unit (4). This audio circuit (a) is connected to the receiver (8).
and controls the transmitter (9).

” The dual I10 controller (10) has a key (
11) and a ringer (12) for generating a ringtone are connected to each other. In addition, the central processing unit (4) is connected to the line! /F
In addition to the circuit (2), switch section (3), and audio circuit (7), there is also an I10 controller (10) and a display LCD (1).
3) and thereby an information channel (B1) based on the input signal of the key (11) from the I10 controller (10) and the signal of the signal channel (D).

(B2) connection control, LCD (13) display control, etc. are performed.

In addition, the information channels (B) and (B2) mentioned above
■ can be used for both telephone and data communications, and the calling number is stored in case of missed calls.

Next, the operation of the conventional example as described above will be explained. l
When a call is received from 5DN (1), the central processing unit (
4), the calling party number is displayed on the LCD based on the information of the signal channel (D) separated by the line 1/F circuit (2).
(13) is displayed.

Furthermore, the switch unit (3) is controlled to switch the information channel (
B') or (B2) is connected to the codec (5) side, and the I10 controller (10) is instructed to ring the ringer (12).

Next, when the telephone on the called side responds according to the ringer (12), a response signal is sent from the central processing unit (4) to the signal channel (D) (mi) via l5 through the opposite route from when the call was received.
The voice circuit (7) operates based on the instruction from the central processing unit (4) while being transmitted via the DN (1), and enters into a talking state.

The voice of the called party's telephone is sent from the transmitter (9) to the codec (5) as an analog voice signal. Here, it is converted into a digital signal and the information channel (B1
) or (B2) and is sent to the line I/F circuit (2).

In the line 17F circuit (2), the information channel (B1),
(B2) and the signal channel (D) are multiplexed,
It is sent to l5DN (1) and transmitted to the other party.

On the other hand, the other party's voice is transmitted through the reverse route and is
5), the digital signal is converted into an analog signal and sent to the receiver (8).

If communication by a data terminal occurs during a call as described above, the central processing unit (4) switches the switch section (3
) is controlled, and the one that is not used among the information channels (B) and (B2) is connected to the data I/F (6). Data communication also takes place in this way, information channel (B).

■ Simultaneous communication according to (B2) is performed.

Furthermore, if a call is made while the user is absent, the number of the caller is stored in the central processing unit (4).

[Problems to be Solved by the Invention] Conventional telephones are configured as described above, and caller numbers of missed calls are stored. Therefore, you can know the other party by displaying it on the LCD.

However, in order to perform such operations, it is necessary to directly operate the telephone, and it is necessary to go home once.

Therefore, there is a problem in that the device cannot respond well when going out for a long period of time or when an emergency is required, and the device cannot fully perform its functions.

This invention has been made in view of the above points, and it is possible to easily check whether or not there are missed calls from a telephone outside the home, that is, from a telephone located at a remote location, and if there are missed calls, the call is automatically missed. The purpose is to provide a digital telephone that can transfer an incoming call to the caller.

[Means for Solving the Problems] The present invention provides channel switching means for switching and combining separated information channels, memory means for storing the calling party number of the called party, and prerecorded voice. The apparatus includes a recording and reproducing means for reproducing and outputting, and a receiver means for decoding a predetermined code received through any of the information channels, and further includes a missed call control means, an automatic call control means, and a forwarding means for controlling these means. The invention is characterized by comprising a control means.

[Function] According to the present invention, when there is a missed call, the missed call control means automatically answers the call, drives the recording and reproducing means, and furthermore, the calling party number of the other party is stored in the memory means.

Then, when the receiver means decodes the call, the automatic call control means automatically places a call using the idle information channel to the other party who received the call when he or she was absent.

At this time, when the other party responds, the information channel on which the code of the receiver means has been received and the information channel connected to the other party are connected under the control of the channel switching means by the transfer control means, and the telephone call is transferred to the other party. be exposed.

[Example 1] Hereinafter, an example of the present invention will be described with reference to the accompanying drawings. Note that the same reference numerals are used for the same components as in the prior art described above.

FIG. 1 shows an embodiment of the invention.

In this figure, a recording/playback section (21) is connected in parallel to the above-mentioned audio circuit (7) and a central processing unit (20). Furthermore, there is a DT between the audio circuit (7) and codec (5) and the central processing unit (20).
An MF receiver (22) is connected. In addition, the central processing unit (20) includes a line 1/F circuit (2), an I10 controller (10), an LCD (13), a channel switching circuit (23), and a calling ID storage memory (24). It is connected. Furthermore, a channel switching circuit (23
) are connected to a line 1/F circuit (2), a codec (5), and a data I/F (6), respectively.

Of the above parts, the recording/playback part (21) is the transmitter (
9) has the function of recording the human voice input, playing it back and sending it as a message during automatic response.

The DTMF receiver (22) then decodes the DTMF tones into dialed digits. Further, the channel switching circuit (23) is an information channel (B1) separated by the line 1/F circuit (2).

(B2) to codec (5) or data I/F (6)
or change the connection to the information channel (B),
(B2) are connected to each other.

Furthermore, the caller ID storage memory (24) stores all calling numbers at the time of missed calls.

Next, the overall operation of the above embodiment will be explained with reference to the flowchart of FIG. In addition, (A) in the same figure
indicates the operation regarding the channel (Bl).

First, the channel (Bl) side will be explained.

It is assumed that the user of the digital telephone sets the telephone of FIG. 1 to automatic answering mode and is out of the house.

In this case, if there is an incoming call (Fig. 2 (A)
), the calling number information sent via the l5DN (1) by the signaling channel (D) is sent to the line 1/F circuit (2).
separated by This separated calling number information is sent to the central processing unit (20) and then sent to the calling ID storage memory (20).
4) (see step SN).

Next, the central processing unit (20) first sends a predetermined response signal to the other party via the signal channel (D) via the 15DN (1), starts the recording/playback unit (21), and starts recording. message will be conveyed to the caller (see step 5CSSD).

Here, when the calling party disconnects the call after listening to the message content (see step SN), a disconnection signal is transmitted and the telephone returns to the empty state (see step SN).

Next, suppose that the user of the telephone shown in Figure 1 uses a telephone outside the home (not shown) to make a call to the telephone shown in Figure 1 at home, and for example, the call arrives on channel (B1). shall be.

The telephone becomes in a talking state by the operations in steps SA to SD. At this time, the user uses the PB button (not shown) on the out-of-home phone to enter a predetermined password, etc.
When sent as a sound, this is detected by the DTMF receiver (22), which decodes the dialed digits and sends them to the central processing unit (22).
0) (see step SN).

Next, the central processing unit (20) judges the entered dial number (see step SN), and if it is correct, the caller ID stored in the caller ID storage memory (24) is used to determine the number of calls sent by the user. The user number (outside number) is deleted (see step SN). Furthermore, if there is another calling number in the calling ID storage memory (24), an instruction to make a call is issued to an unused channel (B2) (step S
(see J, SK). This calling number was received when the caller was absent.

Next, the channel (B2) side will be explained.

When the channel (B2) receives a calling instruction from the channel (B1) (see step SN in FIG. 2(B)). The calling party number stored in the calling ID storage memory (24), that is, the calling party number that received the call when the user was absent, is set as the outgoing dial number (see step 9M), and a call is made to the telephone set with that calling party number. is performed (see step SN).

If the other party responds here (see step SN), the channel switching circuit (23) operates to switch to channel B).
, (B2) is made (see chip SP). By this channel connection, the telephone at the outing location and the telephone of the caller who made the call when the caller was absent are connected via the telephone of FIG. 1, and both parties are able to talk.

It should be noted that the present invention is not limited to the above embodiments; for example, in the above embodiments, channel (B) is the receiving side and channel (B2) is the calling side; B2) may be replaced with ■.

Further, in the above embodiment, the information channel is (B),
(B2) is the case of two channels, but it can be similarly applied even when there are more information channels.

[Effects of the Invention] As explained above, according to the present invention, the calling party number in the case of a missed call is stored, and the stored calling party number can be retrieved by a simple operation using a telephone outside the home or a remote telephone. Since a transfer connection is made to the designated telephone number, there is an effect that a missed call can be quickly responded to.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the configuration of a digital telephone according to an embodiment of the present invention, Fig. 2 is a flowchart showing the operation of the embodiment of Fig. 1, and Fig. 3 shows an example of a conventional digital telephone. It is a block diagram. In the figure, (1) is l5DN, (2) is line 1/F circuit, (5) is codec, (6) is data I/F, (2) is
0) is the central processing unit, (21) is the recording/playback section, and (22) is the central processing unit.
) is a DTMF receiver, (23) is a channel switching circuit, (24) is a sender ID storage memory, (B), (B
2) is a channel. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Agent: Patent attorney Masuo Oiwa (and 2 others) Figure 2 (A) CB) Procedural amendment (
(Spontaneous) Month, Day 1, Showa, Display of the incident Tokuhan Showa. . -036°35 No. 2
, Title of the invention Digital telephone 3, Relationship to the case of the person making the amendment Patent applicant address 2-2-3 Marunouchi, Chiyoda-ku, Tokyo Name (601) Mitsubishi Electric Corporation Representative Moriya Shiki 4, Agent Address: 2-2-3-5 Marunouchi, Chiyoda-ku, Tokyo
, hiiiE's claims, detailed description of the invention, and brief description of the drawings. The above patent claims provide a digital telephone in which communication is performed by multiplexing and separating a plurality of information channels and control signal channels, and a channel switching means for switching and combining the separated information channels; A memory means for storing a calling party number, a recording and reproducing means for reproducing and outputting a prerecorded voice, a receiver means for decoding a predetermined code received through any of the information channels, and automatically answering a missed call. , a missed call control means for driving the recording and reproducing means and further storing the caller number of the other party in the memory means; automatic call control means for controlling the signal channel so as to automatically call the other party using the available information channel using data stored in the memory means, and the other party responds when the automatic call is made; a digital telephone, comprising transfer control means for controlling the channel switching means to connect the information channel on which the code of the receiver means has been received and the information channel connected to the other party. .

Claims (1)

[Claims] In a digital telephone that communicates by multiplexing and separating a plurality of information channels and a control signal channel, there is provided a channel switching means for switching and combining the separated information channels; A memory means for storing a calling party number, a recording and reproducing means for reproducing and outputting a prerecorded voice, a receiver means for decoding a predetermined code received through one of the information channels, and an automatic response in the case of a missed call. and a missed call control means for driving the recording and reproducing means and further storing the calling party's calling number in the memory means; automatic call control means for controlling the channel switching means to automatically make a call using a free information channel using the data stored in the memory means; , transfer control means for controlling the channel switching means to connect the information channel on which the code of the receiver means has been received and the information channel connected to the other party.