JPH11262041A - Key telephone device and its calling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable calling by means of a second voice channel by receiving a new call request through reception during communication, when a request is made during communication. SOLUTION: When an extension telephone set 1 is called by the extension telephone set 2 while the set 1 is under communication with the telephone set of an outer line by a channel B1, the central arithmetic part of the set 2 transmits the key number to a time compassion transmission LSI 105B connected to an extension transmission path 108 after the set 2 calls. A central arithmetic part 102 of the main device executes a report to the set 1 with a data selector 106 by way of a time compression transmission LSI 105A and the extension transmission path 107. After receiving it, the extension telephone set 1 reports that communication has been executed with the set 2 by the channel B2 to the part 102 of the main device. The part 102 instructs the usage of the channel B2 to a time switch 101 and forms a communication path in the B2 channel. When communication with the outer line is executed by a hand-set, the second call is executed by a loudspeaker and a microphone.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key telephone apparatus comprising a main device and a plurality of telephones, each of which has two voice channels, and a method of communicating with the key telephone apparatus.

[0002]

2. Description of the Related Art The key telephone apparatus has been remarkably advanced with the transition to digital and advanced functions, and the transmission system between the telephone and the main unit has also evolved from analog to digital. In particular, in a telephone having two voice communication channels and one information transmission channel, one channel is used for external (extension) communication of the telephone, and the other channel is used for data communication of a personal computer or FAX connected to the telephone. It is characterized in that data communication can be performed on another channel while talking on one channel. However, the number of telephones to which a personal computer or a facsimile is connected is very small, and other channels of the telephone are usually not used.

[0003] Further, when an emergency is generated for a user of a telephone while a telephone connected to the key telephone apparatus is making an outside line (extension), a so-called "busy call" function is used. In most cases, a call is made to a telephone user. However, the function of "calling busy" was as follows. (1) While a telephone user is performing an outside line (extension) call using a handset, a certain operation is performed from another telephone to mix the outside call (extension) call from the receiver of the telephone handset. A beep is transmitted to notify the telephone user that another telephone is calling. (2) While the telephone user is performing an outside line (extension) call using the handset, a signal sound is transmitted from the telephone speaker by performing a certain operation from another telephone, and the telephone user receives another signal. Notify that you are being called from your phone.

[0004]

However, the above conventional example has the following disadvantages. (1) During an outside line (internal line) call, a signal sound is output mixed with the incoming call, so that it becomes difficult to hear the sound of the incoming call. In addition, for how long it will urgency for the signal sounds, do not know at all what kind of if the contents are. (2) Since a signal tone is output from the speaker during an outside line (extension) call, the signal tone is often not noticed, and even if noticed, the contents are completely unknown.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and a key telephone apparatus capable of accepting a new call request during a call on a first voice channel and performing a call on a second voice channel. The purpose is to provide a method of calling.

[0006]

According to the present invention, there is provided a key telephone apparatus comprising a main device and a plurality of telephones, each of the plurality of telephones having two voice channels. A first call unit for making a call using one voice channel; a call receiving unit for receiving a new call request during a call by the first call unit; and a call receiving unit for receiving a call received by the call receiving unit. And second communication means for performing communication using the second voice channel.

Preferably, the first communication means performs a call using a handset, and the second communication means performs a hands-free communication using a speaker and a microphone.

[0008] Further, there is provided a means for responding to the call request using the second voice channel and recording / reproducing a voice message during a call by the first call means, and It is characterized by recording a voice message.

[0009] Further, there is provided a display means for displaying that a voice message from the other party has been recorded during the call by the first call means.

According to another aspect of the present invention, there is provided a method of communicating a key telephone apparatus comprising a main device and a plurality of telephones, each of the plurality of telephones having two voice channels. A first call step of making a call using a voice channel, a call receiving step of receiving a new call request during a call in the first call step, and a second call receiving step of receiving the call received in the call receiving step. And a second communication step using the voice channel.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

[First Embodiment] FIG. 1 is a block diagram showing a configuration of a main device of a key telephone apparatus according to an embodiment. In the figure, reference numeral 101 denotes a time switch,
Two channels (B1 channel and B
(2 channels) to form a voice data communication path.
A central processing unit 102 controls a time switch 101, a data selector for transmitting and receiving control data to and from an external line interface and an extension telephone, which will be described later. An external line interface 103 controls communication of voice signals, data, and the like with a public network according to a predetermined communication protocol. Reference numeral 104 denotes a telephone line. In the present embodiment, the main device accommodates one or a plurality of telephone lines. 105A is an LSI that performs two-wire time division transmission (ping-pong transmission) (hereinafter, referred to as an LSI).
It is a ping-pong transmission LSI) and has a voice channel (B1 and B2 channels) with the extension phone 1 and a channel for transmitting and receiving control data. 105B is ping-pong transmission LS
I and the voice channel (B1 and B
2 channels) and a channel for transmitting and receiving control data. Reference numeral 106 denotes a data selector for selecting control data when transmitting and receiving control data between the main unit and each extension telephone. Reference numeral 107 denotes an extension transmission line for connecting the extension telephone 1 to the main device. Reference numeral 108 denotes an extension transmission line for connecting the extension telephone 2.

FIG. 2 is a block diagram showing a configuration of an extension telephone connected to the main unit shown in FIG. In FIG. 1, reference numeral 201 denotes a ping-pong transmission LSI, which performs two-line time-division transmission (ping-pong transmission) with a main device in an extension telephone. A central processing unit 202 controls the entire telephone. 203 is a codec A, which is a ping-pong transmission LS
The digital signal of the first audio channel output from I201 is converted into an analog signal, and the audio input from a microphone of a handset described later is converted into a digital signal. Reference numeral 204 denotes a codec B, which converts a digital signal of the second audio channel output from the ping-pong transmission LSI 201 into an analog signal, and converts audio input from a microphone described later into a digital signal.

Reference numeral 205 denotes a display, which displays a caller number, a caller name, and the like sent from the public network at the time of an incoming call. 206 is a handset receiver amplifier, and 207 is a handset microphone amplifier. 208 is a speaker amplifier, and 209 is a microphone amplifier. Reference numeral 210 denotes a handset, which includes a receiver and a microphone (not shown). 211 is a speaker, and 212 is a microphone. Reference numeral 213 denotes a key, which includes an outside line button, various function keys, and a numeric keypad.

The above-mentioned central processing units 102 and 202
Are a CPU that performs processing in accordance with a predetermined program, a ROM that stores a program and control data for the CPU,
The PU is constituted by a RAM or the like in which a work area and various tables used by the PU when executing the processing are defined.

The operation when the extension telephone 1 connected to the main unit via the extension transmission line 107 in the above configuration makes an external call will be described.

First, when the external line 1 button in the key 213 of the extension telephone is pressed, the central processing unit 202 causes the ping-pong transmission LSI 201 and the ping-pong transmission LSI 1 of the main unit to operate.
An external line supplementation request is transmitted to the central processing unit 102 via 05A. Thus, when the central processing unit 102 of the main unit receives the external line capture request via the data selector 106, it issues a supplementary command for the external line 104 to the external line interface 103. When the outside line is captured, the central processing unit 10
2 sends a tone signal to the extension telephone indicating that the outside line has been captured.

Next, the user of the extension telephone uses the key 213 to input the telephone number of the other party with whom the user wants to talk. As a result, the central processing unit 202 transmits the input dial information to the central processing unit 102 via the ping-pong transmission LSI 201 of the extension telephone and the ping-pong transmission LSI 105A of the main unit. Thus, when the central processing unit 102 of the main unit receives the dial information via the data selector 106, it instructs the external interface 103 to transmit the dial information. Then, a dial is transmitted from the external line interface 103 to the external line 104.

Thereafter, when a response is received from the other party, the external line interface 103 notifies the central processing unit 102 of the response. As a result, the central processing unit 102 issues a command to the time switch 101 to form a communication path between the outside line 104 and the extension telephone. The voice received from the other party is transmitted to the ping-pong transmission LSI 105 via the B1 channel which is a communication path from the time switch 101 to the extension telephone.
A, ping-pong transmission LSI 201, codec A 203,
The signal is sent to the receiver amplifier 206 and the handset 210 to complete the reception. On the other hand, the transmitted voice is handset 21
0, handset microphone amplifier 207, codec A2
03, the ping-pong transmission LSIs 201 and 105A, the time switch 101, and the external line interface 103 are transmitted to the external line 104 in this order.

Next, a description will be given of an operation when a busy call is made from the extension telephone 2 to the extension telephone 1 in a state where a telephone call between the outside line 104 and the extension telephone 1 is established.

FIG. 3 is a flowchart showing the operation at the time of a busy call in the first embodiment. First, when the user of the extension telephone 2 selects a key number for calling the extension telephone 1 from the keys 213 and presses it (step S101), the central processing unit 202 of the extension telephone 2 transmits the key number via the ping-pong transmission LSI 201. The transmission is made to the ping-pong transmission LSI 105B connected to the extension transmission line 108. Thus, when the central processing unit 102 of the main unit receives the key number via the data selector 106, the central processing unit 102 notifies the extension telephone 1 that an extension call has been received from the extension telephone 2 (step S102). This call is transmitted from the data selector 106 to the ping-pong transmission L.
The information is sequentially notified to the SI 105A, the extension transmission path 107, the ping-pong transmission LSI 201 of the extension telephone 1, and the central processing unit 202.

Next, the central processing unit 202 of the extension telephone 1 that has received the notification, since the telephone is currently talking on the outside line 104 on the B1 channel, the central processing unit 202 of the main unit instructs the telephone to communicate with the extension telephone 2 on the B2 channel. Notify 102. As a result, the central processing unit 102 of the main unit sets the time switch 101 so that the telephone call with the extension telephone 2 uses the B2 channel.
To form a communication path on the B2 channel (step S103). Then, a call between the extension telephone 2 and the extension telephone 1 is started (step S104).

More specifically, as in the above-described call operation, first, voice data is transmitted from the handset 210 of the extension telephone 2 to the ping-pong transmission LSI 201 of the extension telephone 1 via the B2 channel, and is converted into an analog signal by the codec B204. Then, the image is enlarged by the speaker amplifier 208 started by the central processing unit 202 and output to the speaker 211. On the other hand, the voice data input from the microphone 212 of the extension telephone 1 is expanded by the microphone amplifier 209 started by the central processing unit 202, and the codec B20
4 are exchanged by the ping-pong transmission LSI 201, the ping-pong transmission LSI 105A of the main unit, and the time switch 201, and sent to the extension telephone 2.

Thus, the user of the extension telephone 1 can talk with the extension telephone 2 even though the user is in a call with the outside line 104 using the handset 210. A hands-free call can be made with the microphone 212 and the speaker 211,
The user of the extension telephone 2 which may be urgently used can be contacted.

[Second Embodiment] Next, a second embodiment according to the present invention will be described with reference to the drawings.

FIG. 4 is a block diagram showing the configuration of the extension telephone according to the second embodiment. The same components as those of the extension telephone shown in FIG. 2 are denoted by the same reference numerals.

In FIG. 4, reference numeral 401 denotes a response unit;
If there is a busy call while talking on one channel, B2
Respond by voice using the channel. A recording unit 402 records a message from the other party.

Here, the user of the extension telephone 1 is
The following describes the operation of receiving a busy call from the extension telephone 2 and answering using the B2 channel when a call is being made using the telephone number 4, and recording a message from the other party. The operation in which the extension telephone 1 makes a call with the outside line 104 is the same as that of the first embodiment, and the description is omitted.

First, the user of the extension telephone set 1
If a busy call is received during an outside line call before entering the telephone call with, the setting is made using the key 213 so as to enter an automatic answering and message recording mode. At this time, the central processing unit 20
2 displays on the display 205 that this mode has been entered. Here, when the user of the extension telephone 2 makes a busy call to the extension telephone 1 talking to the outside line 104 in the same manner as in the first embodiment, the central processing unit of the extension telephone 1 receiving the busy call 202 instructs the response unit 401 to notify the extension telephone 2 of a message indicating that this telephone is currently in a call with the outside line 104 and cannot respond to the call. Then, the recording unit 402 is instructed to set the recording unit 402 so that recording can be performed.

As a result, the user of the extension telephone 2 records the contents to be conveyed to the user of the extension telephone 1 in the recording section 402. Then, the central processing unit 202 of the extension telephone 1 displays on the display 205 that the recording has been made in order to inform the user that the recording has been made during the external call. afterwards,
When the call with the outside line 104 is completed and the user of the extension telephone 1 notices that there is a recording on the display 205, the user operates the key 213 and activates the recorded content by the central processing unit 202. Speaker amplifier 208
Through the speaker 211.

As described above, according to the second embodiment, even if an emergency message is input during a call with the outside
By recording the content from another phone through the channel, you will not miss it and you can always listen to it.

In the first and second embodiments described above, a case where a busy call is received from an extension telephone during a call with an outside line has been described as an example. However, the present invention is not limited to this.
When answering an incoming call from an external line during a call with an extension telephone, answering an incoming call from another external line while talking with one of a plurality of external lines, or receiving a call from another extension telephone during a call with an extension telephone It is also possible to apply when accepting a call.

In the above description, the central processing unit of the extension telephone during a call transmits a channel used for a busy call to the central processing unit of the main unit. Needless to say, it's good.

The present invention can be applied to a system including a plurality of devices (for example, a host computer, an interface device, a reader, a printer, etc.), but can be applied to a single device (for example, a copier, a facsimile). Device).

Further, an object of the present invention is to supply a storage medium storing a program code of software for realizing the functions of the above-described embodiments to a system or an apparatus, and to provide a computer (CPU or MP) of the system or apparatus.
It goes without saying that U) can also be achieved by reading and executing the program code stored in the storage medium.

In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiment, and the storage medium storing the program code constitutes the present invention.

As a storage medium for supplying the program code, for example, a floppy disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD
-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

When the computer executes the readout program code, not only the functions of the above-described embodiment are realized, but also the OS (Operating System) running on the computer based on the instruction of the program code. ) May perform some or all of the actual processing, and the processing may realize the functions of the above-described embodiments.

Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, based on an instruction of the program code, It goes without saying that the CPU included in the function expansion board or the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

[0040]

As described above, according to the present invention,
During a call on the first voice channel, a new call request can be accepted and a call on the second voice channel can be made.

[0041]

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a main device of a key telephone device according to an embodiment.

FIG. 2 is a block diagram showing a configuration of an extension telephone connected to the main device shown in FIG.

FIG. 3 is a flowchart illustrating an operation during a busy call in the first embodiment.

FIG. 4 is a block diagram illustrating a schematic configuration of an extension telephone according to a second embodiment.

[Explanation of symbols]

 101 Time Switch 102 Central Processing Unit of Main Device 103 External Line Interface 104 Telephone Line 105A Ping-Pong Transmission LSI 105B Ping-Pong Transmission LSI 106 Data Selector 107 Extension Transmission Line 108 Extension Transmission Line 201 Ping-Pong Transmission LSI 202 Central Processing Unit of Telephone 203 Codec A 204 Codec B 205 Display unit 206 Handset receiver amplifier 207 Handset microphone amplifier 208 Speaker amplifier 209 Microphone amplifier 210 Handset 211 Speaker 212 Microphone 213 Key

Continued on the front page (51) Int.Cl. ⁶ Identification code FI // H04M 3/50 H04M 3/50 B

Claims (8)

[Claims] 1. A key telephone device comprising a main device and a plurality of telephones, each of which has two voice channels, wherein first telephone means for making a telephone call using a first voice channel. A call receiving unit that receives a new call request during a call by the first call unit; and a second call unit that performs a call received by the call receiving unit using a second voice channel. A key telephone device comprising: 2. The key telephone apparatus according to claim 1, wherein said first communication means performs a call using a handset, and said second communication means performs a hands-free communication using a speaker and a microphone. And means for responding to the call request using the second voice channel and recording / reproducing a voice message during a call by the first call means. 2. The key telephone device according to claim 1, wherein a voice message from the telephone is recorded. 4. The key telephone apparatus according to claim 3, further comprising display means for displaying that a voice message from the other party has been recorded during the call by said first call means. 5. A telephone call method for a key telephone device comprising a main device and a plurality of telephones, each of said plurality of telephones having two voice channels, wherein a first voice communication is performed using a first voice channel. A call receiving step of receiving a new call request during a call in the first call step; and a second step in which the call received in the call receiving step is performed using a second voice channel. And a telephone call method for the key telephone device. 6. The method according to claim 5, wherein a call using a handset is performed in the first communication step, and a hands-free communication using a speaker and a microphone is performed in the second communication step. . 7. The method according to claim 1, further comprising the step of responding to the call request using the second voice channel and recording / reproducing a voice message during the call in the first call step. 6. The method according to claim 5, wherein a voice message is recorded. 8. The key telephone apparatus according to claim 7, further comprising a display step of displaying that a voice message from the other party has been recorded during the call in said first call step.