JPH0290852A - Digital telephone system - Google Patents

Abstract

PURPOSE:To improve operability by providing a means storing data of a data signal channel by means of an interruption request for a telephone set terminal, and reproducing it afterwards so as to hear it. CONSTITUTION:In addition to a B2 channel switching part 29 which is switched so that extracted from the data signal channel outputted from a transmission control part 2a is given to a data signal transmission reception processing part 13, a switching part 101 is provided between the B2 channel switching part 29 and a CODEC 4b. Here, the switching part 101 sets one of switching output destinations to the CODEC 4b, and the other switching output destination to a storage device 102. Then, the switching part 101 sets to be the CODEC 4b-side from the storage device 102 when the storage device 102 reads and reproduces data. Sound message data from the telephone terminal which has given the interruption request is stored in the storage means 102. When a reading instruction is given, the stored reception sound message flows from a loud sound call system. Thus, operability can be improved.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention is a voice/data integration system that enables the transmission and reception of voice and data, and also enables an interrupt call from a third party during a call. Relating to a digital telephone system for communication.

(Prior Art) There is a digital telephone system for integrated voice and data communication that allows voice and data to be sent and received, and also allows an interrupt call from a third party during a call.

A conventional device of this type had a configuration as shown in FIG. That is, in the diagram shown in FIG. 2, ■ is a telephone main body equipped with a circuit for simultaneous voice and data communication, a circuit for listening to interrupt voice from a third party, etc., 19 is a private branch exchange (PBX), and 25 is a data interface device.

The telephone main body 1 has functions such as multiplexing (or decomposing) the signals of the voice channel, the pig channel, and the signal channel, or electrically matching the signal transmission with the exchange 19. Transmission control units 2a and 2b provided separately for each interrupt system
, which is in charge of various overall controls in the telephone main body 1, and in the case of a signal control method using the exchange 19, a transmission control section 2a.

Based on the terminal control information obtained from the signal channel information decomposed in step 2b, the call control unit 5 and LED (light emitting diode)
Control of display 11 for character display using lamp 10 and LCD (liquid crystal display element), and asynchronous data terminal (
The control unit 3 sets the data transmission and reception conditions such as setting the communication speed for the processing unit 13a using setting information from the DTE).
D/D converts pulse code modulation) signals into analog signals.
The analog signal from the A converter and handset 8 is converted to PCLi.
It has an A/D conversion section for converting into a signal, and is further equipped with a predetermined bandpass filter, and is provided separately for each of the normal and interrupt systems for encoding the audio signal and converting the coded signal into an audio signal. electrical interface with the telephone receiver 8 and the telephone 4a, 4b.
a call control unit 5 that interfaces with the call control unit 5, an amplifier 7 that magnifies and listens to the other party's voice and amplifies the signal so as to obtain a sufficient volume to be heard from the speaker 12 in the event of an interruption by voice from a third party; The handset 8, the above-mentioned key part 9 for entering the telephone number of the other party when making a call, or pressing the dial key used for various special number services and the function keys for executing various functions, and the above-mentioned key part 9 for displaying the usage status of the own terminal. The LED lamp 10 of
(b) A speaker 12 for amplifying and listening to sounds and interrupt voices, and a transmission control unit 2a, 2b converting the communication speed of the signal of the data signal channel decomposed into the communication speed of the asynchronous data terminal, or transmitting the communication of the synchronous data terminal. Convert the speed to the signal communication speed of the data signal channel. Also, a data signal transmission/reception processing unit 13a having a function of electrically matching with the asynchronous data terminal, a connector 14a that provides a physical interface with the asynchronous data terminal, and a transmission transformer iGa that performs transmission between the exchange 19 and the telephone main body 1. , 16b, a switching section 6 for selecting either the output of the loudspeaker 4a or the output of the loudspeaker 4b and providing the selected output to the speaker 12. The telephone main body 1 can be connected to a data terminal 15a such as a personal computer having a procedure (known as a haze command) that allows switching between communication mode and command mode by operating the terminal keyboard via the connector 14a.

Reference numeral 17 is a transmission path between the exchange 19 and the telephone main body 1, and 18 is a transmission path provided between the exchange 19 and the telephone main body 1 in order to be used for interrupting by a third party's voice.

The exchange 19 performs exchange processing between central office lines, leased lines, etc. and double-line extension terminals, and 20a is this exchange that sends voice signals from each digital telephone main body 1 and data signals from each asynchronous data terminal. This is PCM Highway within 19. In addition to this, the exchange 19 also has a time switch 21.
Transmission control units 2c, 2d2e, control unit 22, telephone interfaces 23c, 23d.

23e, etc. (V included.) Among these, the time switch 2■ is used to switch on a time-division basis, so it forms a communication path between extensions, and between a central office line and an extension. It performs various controls necessary for exchange operations, such as controlling the transmission control units 2c and 2d and the time switch 21, and controlling terminals according to the call status, and when receiving requests for interrupt calls due to special numbers or function key operations. Telephone interfaces 23c and 23d are used to make interrupt calls to the other party's telephone.

23e is an interface unit for analog telephones including standard telephones, and is composed of a copier, a power supply circuit, and the like. Further, 24 is a call control bus for the control section 22 to control the transmission control section 2 and the time switch 21 .

The data interface device 25 is for connecting a data terminal 15b such as a personal computer to the exchange 19, and is used to interface with the difference in communication method (communication speed and procedure) between the exchange 19 and the asynchronous data terminal. It is composed of a signal transmission/reception processing section 13b, a transmission control section 2f, a transmission transformer 16f, a control section 27, and the like. Among these, the data signal transmission/reception processing section 13b is the transmission control section 2
Converting the communication speed of the pig signal sent and received by F and the communication speed of the asynchronous data terminal to the communication speed of the transmission control unit 2e,
It converts the communication speed to that of an asynchronous data terminal, and it also performs electrical matching with an asynchronous data terminal.

In addition, the transmission control section 2r decomposes the received frame into a B2 channel which is a pig signal channel, a D channel which is a control signal channel, and others, and provides them to the data signal transmission/reception processing section 13b, or sends data etc. from the data signal transmission/reception processing section 13b. 16r is a transmission transformer.

The control unit 27 is in charge of overall control of the data interface device 25, and when the exchange 19 and the data interface device 25 use a signal control method using the exchange 19, the transmission control unit 2f transmits information on decomposed signal channels. It performs connection processing with an asynchronous data terminal based on the terminal control information obtained from the terminal control information, and also performs communication speed conversion processing with an asynchronous data terminal.

2Ge 2[id 28e is an analog telephone terminal such as a standard telephone, and is connected to the exchange 19 via telephone interface units 23c, 23d, and 23e of the exchange 19.

FIG. 3 is a diagram showing a frame structure for simultaneous voice and data communication. In the figure, 51 is a frame synchronization bit for synchronizing data transmission, and 52 is an audio signal channel ( It is hereinafter referred to as the B1 channel (64 kbps) and has an 8-bit configuration.

Further, 53 is a data signal channel (hereinafter referred to as B2 channel (B4k bps)) to which data signals are assigned.
), which is also an 8-bit configuration. Reference numeral 54 denotes a signal channel (hereinafter referred to as 1D channel (16 kbps)) to which a control signal is assigned, and this is composed of z bits. Reference numeral 55 denotes a parity pit used for retransmission control when an error occurs in the information of the entire frame, and here it is composed of 1 bit and is 1-2.

In such a configuration, for example, the telephone body]
Consider a call made from an arbitrary extension telephone 126c. In this case, the exchange 19 establishes an exchange connection based on the dial data from the extension telephone 26c. Then, the voice from the extension telephone 2Sc is transmitted to the marked telephone interface section 23.
c, A/D converted, converted into a digital signal, and then sent to the PCM highway 2 on the drift telephone side under the control of the control unit 22.
0b, is replaced by the time switch 21, and is transferred to a predetermined time slot on the PCM highway 20a on the telephone main body side under the control of the control section 22. The digital signal carried in a predetermined time slot on the PCM highway 20a is transmitted to a predetermined transmission control section 2 to which the telephone main body 1 is assigned under the control of the control section 22.
c, and placed on the B1 channel (52 in FIG. 3) in the data format shown in FIG.
channel (53 in Figure 3), D channel (3rd
It is multiplexed with 54) in the figure and sent to the system 1 via the transmission transformer 16c and the transmission path 17 to the eight-talker machine "C'1". The telephone main body 1 receives this via a transmission transformer lea. The signal received by the telephone body 1 is sent to the transmission control unit 2
The voice signal is again decomposed into a voice signal and a data signal, and the voice signal is D/A converted by the copier 4a, and is converted to a predetermined voice level 84i by the call controller 5, and reaches the receiving part of the handset 8. Also, the call voice from the telephone body 1 is adjusted to a predetermined level by the call control unit 5, and
/D converted, multiplexed with the B2 channel (data signal), D channel (control signal, etc.) by the transmission control unit 26, and sent to the exchange 19 via the transmission line 17 via the transmission transformer 16a. The audio received by the transmitter is again decomposed into the B1 channel, B2 channel and D channel by the transmission control unit 2C.
Channel 2 is placed in a predetermined time slot, and an exchange operation is performed by the time switch 21 under the control of the control unit 22, and the B1 channel is placed in a predetermined time slot on the PCM highway 20a on the side of the digital telephone interface unit. The voice signal taken out from a predetermined time slot under the control of the control unit 22 is D/A converted by the analog telephone interface 23c, and after being adjusted to a predetermined level, it is sent to the extension telephone 26c via an analog transmission line. sent to. Then, it is output as voice by the receiver of the handset.

On the other hand, data communication between the data terminal 15a connected to the telephone body 1 and any data terminal 15b connected to an extension is, for example, when data is transmitted from the data terminal 15a to the data terminal 15b, first the data terminal 15a The data is speed-converted by the transmission/reception processing section L3a, and then sent to the transmission control section 2a.
It is multiplexed with the B1 channel, D channel, etc. The signal is then sent to the exchange 19 via the transmission transformer 16a. In the exchange 19, this received data is again decomposed into channel 81, channel 82, and D channel by the transmission control unit 2c, and the old channel and channel 82 are put on a predetermined time slot of the PCM highway 20a on the digital telephone interface side. . Then, the channel 82 is exchanged at the time switch 21, and is again taken out at a predetermined time slot of the PCM highway 20a on the digital telephone interface side, under the control of the control section 22, to the transmission control section 2e to which the data interface device 25 is connected. be done. Here, it is multiplexed with the old channel, D channel, etc., and sent to the data interface device 25 via the transmission transformer 16e. In the data interface device 25, the received data is again decomposed into the old channel, 132 channels, and D channel in the transmission control unit 2r, and the B2 channel is subjected to speed conversion and electrical level conversion in the data signal transmission/reception processing unit 13b. It is sent via connector 14b of data interface device 25 to data terminal 15b.

Then, the terminal 15b displays data in characters on its own CRT display and performs data communication.

Similarly, data from the data terminal 15b is sent to the connector 14b.
The data is sent to the data interface device 25 via the
The data signal is subjected to electrical level conversion in the transmission/reception processing section 13b and multiplexed in the transmission control section 2r.
It is sent to the transmission control unit 2e of the exchange 19 via F. Then, the transmission control unit 2e selects the B1 channel again, 132
Decomposed into channel and D channel, transmission control unit 2
The digital telephone to which b is assigned is placed on a predetermined time slot () □ of the PCM highway 20a on the side of the digital telephone under the control of the control unit 22, and when the time switch 21 is replaced under the control of the control unit 22, the transmission control of the telephone body 1 is resumed. It is taken out to section 2b. Then, by this transmission control section 2b, Bl
It is multiplexed with the channel, D channel, etc., and sent to the transmission control section 2a of the telephone main body 1 via the transmission transformer 16c11Ga. In the telephone body 1, the received multiplexed signal is decomposed by the transmission control unit 2a after control by the control unit 27, and the 132 channels are separated by the data signal processing unit 13a.
The signal is guided to the terminal, subjected to speed conversion and electrical level conversion, and then sent to the data terminal 15a via the connector 14a. The received data is then displayed in characters or the like on the CRT display of the data terminal 15a.

Assume that while the above-mentioned simultaneous voice and data communication is being performed, a call is made to the telephone main body 1 from an arbitrary extension telephone, for example, the extension telephone 26d. Naturally, in this case, since the telephone is busy, a busy tone is transmitted from the exchange 19 to the extension telephone 2Gd.

However, since it is possible to make an interrupt call, extension telephone 2B
Suppose that an interrupt call is made using the special number dial or function key from d. By dialing a special number or operating a function key from the extension telephone 26d, the exchange 19 learns of the interrupt call request from the extension telephone 26d, and operates so that the interrupt call system of the telephone body 1 receives the transmitted voice from the extension telephone 26d. .

In this case, the outgoing voice from the extension telephone 28d is A/Di converted by the analog telephone interface 23c, and the control unit 22 transmits it to a predetermined time slot on the PCM 1 Iue 2Ob of the analog telephone to which the analog telephone interface 23c is assigned. It is placed in a predetermined time slot on the /% Eway which is exchanged by the time switch 21 and assigned for interrupt voice, and is assigned to the interrupt voice of the telephone body 1 under the control of the control unit 22. The data is taken out to a certain transmission control section 2d. Then, the transmission control unit 2d multiplexes the B2 channel, D channel, etc., and transmits the transmission transformers 16d, l.
[Sent via ib to the interrupt audio transmission control section 2b of the telephone main body 1, where the B1 channel, 132
Channel Decomposed into D channel. And Bl
The channel is D on Copeic 4B of the interrupt audio system.
/A conversion, passes through the switching unit 6, is amplified to a predetermined level by the amplifier 7, and is sent from the speaker 12 as an interrupt notification and a voice transmission.

Here, the switching unit 6 switches the telephone 1 from the exchange 19 according to information given from the special number or function key from any telephone 26d.
Switching is performed by the control section 3 of the telephone body 1 giving a switching control command in response to a control signal sent via the D channel.

(Problem to be solved by the invention) In this way, in the voice/data integrated communication system,
A data terminal can be connected to a digital telephone, and normal voice and data can be communicated using the normal voice and data communication system.In addition, a system for interrupting calls is provided, and special numbers and function keys can be used to communicate during a call or data. This system allows an interrupt call from a third party to be made during communication. However, since digital telephones have a system for interrupt calls that is separate from the system for normal voice and data communication, the telephone body 1 has two transmission control units 2 and 2.
It is necessary to have a and 2b, and a Kobuic etc. are also required separately. As a result, the telephone body 1 becomes larger and the price increases, and furthermore, in order to connect such a telephone to the exchange 19 side, the transmission control section for connecting to the terminal must be used for two lines. , compared to the case where a terminal such as a normal telephone or data terminal is connected, the transmission control unit is occupied more than the other terminals, resulting in problems such as a decrease in the efficiency of the system.

Therefore, in order to solve this problem, a digital telephone system with the configuration shown in Fig. 4 has been proposed that enables interrupt calls without providing a system for interrupt calls in addition to the normal voice/data communication system. jko.

This prior art will be explained below with reference to FIG. FIG. 4 is a block diagram showing the (B1 configuration) of the device according to the prior art, which is basically the same as the conventional example explained in FIG. 2. Here, the configuration of the conventional example explained in FIG. On the other hand, on the exchange 19 side, when there is an interrupt special number dial or function key operation, data transmission between the telephone main body 1, which is the called party, and the telephone or data terminal, which is the first communication device, is temporarily stopped. An interrupt request processing command is sent to the D channel, and the voice data from the interrupt requesting telephone that dialed the interrupt special number or operated the function key is transferred to the data signal channel, that is, the B2 channel, and is sent to the called side. The control section 22 has a function of controlling the transmission control section 2C connected to the telephone main body 1 so as to send data to the ZV telephone main body, and the telephone main body 1 has a function of controlling the transmission control section 2C connected to the telephone main body 1. , transmission control section 2
b is abolished, and instead, when the transmission control unit 2a receives an interrupt request processing command from the D channel, when the audio signal data is interrupted, the data signal is extracted from the data signal channel output by the transmission control unit 2a. The data is given to the copier 4b, and normally the data extracted from the data signal channel output by the transmission control section 2a is sent to the data signal transmission/reception processing section [3].
The difference is that an 82-channel switching unit 29 is provided for switching to give 82 channels. Incidentally, when the interrupt requesting telephone goes off-hook, there is no interrupt request processing command on the D channel, so that the telephone main body 1 returns to the original talking state.

In such a (I) configuration, under normal conditions, the B22 channel switching 29 in the telephone body 1 is controlled by the transmission control unit 2.
Since the data extracted from the data signal channel output by a is switched to be given to the data signal transmission/reception processing section 13,
When a call is made between the telephone main body 1 and, for example, an extension telephone 2θC, the operation is exactly the same as the conventional one. Further, data communication between the pig terminal 15a connected to the telephone main body 1 and a data terminal 15b, for example, connected to an extension, is also the same as before. Also, any telephone extension, for example, 26d
When making an interrupt call using a special number dial or function key (a key assigned the same function as the special number dial), the control unit 22 of the exchange 19 interrupts the telephone using the special number dial or function key information from any extension telephone 26d. It is recognized as a request, and the transmission control unit 2a controls the transmission control unit 2a to send an interrupt request processing command on the D channel, and also controls to send the audio signal from the interrupt requesting telephone on the B2 channel. Therefore, at 7, the B22 channel switching 29 on the packing machine main body 1 side sends the B2 channel output output from the transmission control section 2a to the speaker 12 side co-op 4b, and the control section 3 on the telephone main body 1 side sends the B2 channel output output from the transmission control section 2a to the transmission control section It has a function of switching and controlling the switching unit 6 to select either the output from the call control unit 5 or the output from the copier 4b based on the D channel output output from the communication controller 2a.

An exchange 19 performs data communication between data terminals 15a and 15b.
The data terminal uses the D channel from Data communication between the data terminal 15a and the data terminal 15b connected to the pig interface device 25 is interrupted.

Here, "communication mode" is a mode in which a data signal channel is used between the data terminal 15a connected to the telephone body 1 and the pig terminal 15b connected to the data interface device 25 connected to an arbitrary extension. This is the state in which the command is being sent and received, and "command mode" is
This refers to a state in which the data transmission and reception on the data signal channel between the data terminals L5a and 15b is interrupted so that the data terminal can interact with the %-interface device.

When an interrupt request is received in this way, in the exchange 19, the voice from the aforementioned extension telephone 26d is A/D converted by the analog telephone interface 23c, and the analog telephone 26d, which is an analog telephone, is assigned an analog telephone. It is placed in the time slot of the PCM highway 2t)b on the telephone side under the control of the control unit 22, and is exchanged to the position -C where data communication is performed using the time switch 21. Then, when it is placed on the time slot of the 1''C-1 highway 20a of the predetermined digital telephone side assigned to the telephone body 1 and taken out to the transmission control section 2C under the control of the control section 22, -IF, B1 is sent as the B2 channel. channel, D channel, etc., and sends it to the transmission control section 2a of the telephone main body 1 via a transmission transformer [6C716a.

Then, here, B1 channel, B2 channel,
Decomposed into D channel.

1. The main body 1 receives the interrupt request information on the D channel, and the 82 channel switching unit 29 and the speaker switching unit 6 are switched to the cooperative 4b side for interrupt communication in advance, and the audio of the B2 channel is switched to the cooperative After being D/A converted by 4b, it is passed through the speaker switching section 6 to the amplifier 7.
As a result, the voice from the extension telephone 26d that caused the interruption is played from the speaker 12.

In addition, even if the telephone main body 1 is not in the state of data communication, when processing an interrupt request, the voice from any extension telephone 2Gd is A/DD converted by the analog telephone interface 23d, and the corresponding extension is The time slot on the PCM highway 201) on the analog small handset side to which the telephone 26d is assigned is boarded under the control of the control unit 22, and the time slot is replaced by the time switch 21, and the time slot on the digital telephone side to which the telephone 26d is assigned PCM highway 2
The transmission control unit 2b takes a predetermined time slot on Oa and is controlled by the control unit 22 that executes interrupt request processing.
, and is multiplexed with the B1 channel, D channel, etc., and sent from the transmission transformer IGc to the transmission line 17. Transmission control section 2 of telephone main body 1 via transmission transformer 16a
a, where channels 81, 82,
Decomposed into D channel. Previous interrupt request C in advance B2
The channel switching unit 29 is a cobuic 4b for interrupt calls.
Therefore, the B2 channel audio is D/A converted by the audio converter 4b, passed through the speaker switching section 6, amplified by the amplifier 7, and sent to the speaker 12. The voice from the extension telephone 26d that made the call is played.

In this way, in the configuration shown in Figure 4, when an interrupt request is made during a call, the exchange temporarily suspends data between the call terminals, puts the voice from the east end of the telephone that made the interrupt request on the data channel, and interrupts the call. When the optical telephone terminal received an interrupt request, the data channel was used and the voice was transmitted from the speaker, so it was necessary to set up a special line for interrupt calls, as in the Congregation Song Dynasty. Therefore, since the exchange can connect as many terminals as the number of lines it accommodates, it is possible to improve the efficiency of the system and reduce the cost of the system.

However, on the telephone terminal that accepts the interruption, a voice is suddenly interrupted from the speaker during a call, and messages from the other party are broadcast one-sidedly, making it impossible for you to communicate with the other party. As a result, messages are often overlooked.

Therefore, when an interrupt request is made during a call, the exchange temporarily stops communication between the terminals that are communicating, and transmits the voice from the telephone terminal that made the interrupt request to the interrupt optical telephone terminal on the data channel. In the interrupt optical telephone terminal, a system has been proposed in which when an interrupt request is received, the interrupt is displayed on the LED lamp 10 or the LCD display 11 to notify the user, and then the data channel is used to transmit the request as voice. ing. According to this, the user on the receiving side can know in advance that a message has arrived due to an interruption, and is prepared to listen to the incoming message, thereby preventing the user from missing an incoming message due to a sudden interruption. become. However, even in this case, you have to temporarily interrupt the conversation with the other party to hear the message, so it is rude to the other party, and even if you say that the business will be over soon, you are still waiting for the other party to wait. This results in a huge nuisance when a call is being made from a public telephone during a long-distance call.

Therefore, an object of the present invention is to store the voice message data caused by the interruption so that it can be played back and listened to later when a voice message is received due to an interruption. To provide a digital telephone system which eliminates the need to miss a voice message from the other party or interrupt a call to listen to it.

(Means for Solving the Problems) In order to achieve the above object, the present invention is configured as follows. In other words, the terminals are exchanged and connected according to the dial information, and data is transmitted in a frame structure that is assigned to the voice signal channel for small sound signals and to the data signal channel, respectively. A switchboard has an interrupt call service function that interrupts the called party's phone during a call when a special operation is performed, and the switchboard is connected to this switchboard and executes a preset special operation from the landmine filler terminal during a call. If you have a digital telephone terminal with an interrupt call function that allows you to interrupt the telephone during a call, and can send and receive voice and data, you will be able to receive an interrupt call service from the landmine filler when the telephone is busy. In the digital telephone system, when a special operation for an interrupt call is performed from the calling telephone terminal, the exchange issues an interrupt request command to the called telephone during a call, and temporarily stops data exchange with the called telephone. a control means for issuing a stop command; and upon receiving an interrupt request command, transmitting voice data from the calling party's telephone terminal which operated the interrupt call to the called party's telephone terminal which is currently on the call, using its own data signal channel; The digital telephone terminal further comprises a switching means for switching the output path of the data of the data signal channel in the received data, a storage means for storing the received voice data when an interrupt occurs, and the storage means for storing the received voice data when an interrupt occurs. read instruction means for instructing reading of data stored in the means; and when the interrupt request command is given, the storage means controls the output of the switching means to be stored in the storage means, and the storage means receives a read instruction from the read instruction means. and control means for controlling reading of the data and sending the read data to the voice communication system.

(Function) In such a configuration, when the calling telephone terminal performs a special interrupt call operation on the digital telephone terminal that is in use, the control means of the switching equipment interrupts the digital telephone terminal that is in the middle of a telephone call. A request command is given to temporarily stop data exchange with the other party's telephone. Further, upon receiving an interrupt request command, the transmission means of the exchange transmits voice data from the calling telephone terminal that performed the interrupt call operation to the called telephone terminal that is in the middle of a call using the data signal channel. This - time stop command causes the digital telephone terminal to stop communicating with the other party's telephone, and also switches the output path of the data of the data signal channel in the received data to storage means, and sends it to the storage means. Switching control is performed as follows. When the exchange receives an interrupt request, it obtains a voice signal from the telephone terminal that issued the interrupt request, and transmits this to the called telephone through a data signal channel, so that the called telephone receives the interrupt request command. As a result, the control means switches the output of the switching means to be sent to the storage means, and as a result, the voice message data from the telephone terminal that has issued the interrupt request enters the storage means and is stored therein. . In the called telephone, when the user operates the read instruction means to give a read instruction, the control means reads the data from the storage means and sends it to the voice communication system, so that the received voice message stored in the telephone is transferred to the amplified voice communication system. It will flow more.

In this way, the telephone terminal is equipped with a means to store the data of the data signal channel in response to an interrupt request so that it can be played back and listened to at a later date. In telephone systems that have been designed to connect as many terminals as the number of lines that can be accommodated to improve system efficiency, it is possible to miss a voice message due to a sudden interruption, or to interrupt a conversation with the other party and receive an interrupted message. By eliminating the need to listen to music, usability can be dramatically improved.

(Example) Hereinafter, an example of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of this device, which is basically the same as the prior art described in FIG. 4.

In the prior art, the configuration of the conventional example explained in FIG.
However, on the exchange 19 side, if there is an interrupt special number dial or function key 1.
D sends an interrupt request processing command to temporarily stop data transmission between the 711 phone or data terminal that is the communication partner.
channel, and the voice data from the interrupt requesting telephone that dialed the interrupt special number or operated the function key is sent to the telephone that is the called party on the data signal channel, that is, channel 82. The control section 22 has a function of controlling the transmission control section 2c connected to the telephone main body 1, and the transmission control section 2b of the conventional transmission control sections 2a and 2b is abolished in the telephone main body 1, and the transmission control section 2b is replaced. So, the transmission control section? When the 4X receives an interrupt request processing command from the D channel, when the audio signal data is interrupted, it extracts the data from the data signal channel output by the transmission control section 2a and gives the data to the copier 4b, which normally controls the transmission. In the present invention, the B2 channel switching section 29 is configured to provide the data extracted from the data signal channel output by the section 2a to the data signal transmission/reception processing section 13.
A switching unit 101 is provided between 9 and the copier 413,
11, this switching unit 101 uses one switching output light as the above-mentioned copier 4b and the other switching output light as the storage device 102 newly added in this device.
When reading and reproducing data from the storage device 102, the data can be transferred from the storage device 102 to the copier 4b side. Furthermore, the control section 3a of the telephone main body IA
When there is an interrupt request command in
The control unit 3a is equipped with a function to control lighting or blinking of the ED lamp 10, and the control unit 3a switches the switching unit 101 to the storage device 102 side in response to an interrupt from the key part 9 to instruct the storage mode of voice message data. The switching unit 101 is switched to the cooperative 4b side by the storage mode release instruction from the key part 9, and the reading of the storage device 102 is controlled by the storage data read instruction by the key part 9, and at the same time, the storage device 102 and the cooperative 4b are connected. It has a function of controlling the switching unit 101 to switch the switching unit 6 to the speaker 12 side, and switching the switching unit 6 to the speaker 12 side. Furthermore, the control section 3a has a function of switching and controlling the switching section 6 so as to switch the speaker 12 side to the call control section 5 side or switch to the co-op 4b side when receiving the loudspeaker mode instruction from the key section 9 or the interrupt request. Evening. Incidentally, when the interrupt requesting telephone goes off-hook, there is no interrupt request processing command on the D channel, so that the telephone main body 1A returns to the original talking state.

In such a configuration, under normal conditions, the phone main body I
The B22 channel switching 29 in A is the transmission control unit 2a.
Since the data extracted from the data signal channel output by the telephone is switched to be given to the data signal transmission/reception processing section 13, when a call is made between the main body of the telephone and, for example, an extension telephone 2 [IC], the operation is exactly the same as the conventional one. Furthermore, data communication between the data terminal 15a connected to the telephone main body IA and the data terminal 15b, for example, connected to the extension line, remains the same as before.

For example, when making an interrupt call by dialing a special number or using a function key (a key assigned the same function as the special number dialing) from 2[id, any extension telephone 2
Switch 1 using the special number dial or function key information from 6d.
The control unit 22 of 9 recognizes this as an interrupt request to the telephone, controls the transmission control unit 2a to send an interrupt request processing command to the D channel, and also transmits the audio signal of the interrupt requesting telephone to the B2 channel. Control as follows. At this time, if the user on the telephone IA side has previously given a storage mode instruction by operating the key part 9, the control part 3a will send an interrupt request processing command from the exchange 19 to the switching part 10.
1 to the copier 4b side, so the phone body I
The 82-channel switching unit 29 on the A side sends the 82-channel output output from the transmission control unit 2a to the co-op 4b on the speaker 12 side, and also sends the 82-channel output output from the transmission control unit 2a to the control unit 3 on the one-person side of the telephone main body.
a is the D-channel output output from the transmission control section 2a, which is replaced by the output from the call control section 5 and sent to the communication controller 4b.
Since the switching unit 6 is controlled to select the output of
An interrupt voice message using the D channel will be played from the speaker 12.

In addition, if the user of the telephone IA operates the key unit 9 and instructs the voice message data storage mode by interrupt in advance, the control unit 3a activates the switching unit 101 in response to an interrupt request processing command from the exchange 19. Storage device 10
2 side, and the audio data sent from the interrupting party via the D channel is sent to the storage device 102 and stored therein. Therefore, the user of this telephone IA may listen to the voice message at this point, and can therefore talk to the other party without hesitation if the call is in progress.

Prior to this, in response to an interrupt request command, the control section 3A of the telephone main body IA controls the LED lamp 10 to turn on or blink, thereby giving advance notice of the arrival of a voice message due to an interrupt. Further, this may be displayed on the LCD display 11, and a combination thereof may also be considered. Therefore, the user of the telephone IA can be informed of the incoming voice message due to interruption. Phone I after the call ends
When the user of A gives an instruction to read stored data by operating the key part 9, the control part 3a is activated by the switching part 101.
is connected to the storage device 102 and the copier 4b side, and also controls reading of the storage device 102,
Moreover, the switching section 6 is controlled to be switched to the speaker 12 side. As a result, the interrupt voice message stored in the storage device 102 is played from the speaker I2. (Incidentally, even when the storage mode is set, it may be possible to set the interrupt voice message to be played from the speaker 9 at the same time.) Thereby, the received message can be listened to slowly as many times as desired later.

Further, when the above-mentioned interrupt request processing is performed, if data communication is being carried out between the data terminals 15a and 15b instead of a telephone call, the exchange 19
The D channel is used for data communication between 5b and 5b, and an interrupt request is made to the control unit 3A or control unit 27 of the telephone main body IA or data interface device 25 as if the data terminal had performed an operation to switch from communication mode to command mode. Once the information is given, the data communication of the data terminal 15a of the telephone main body IA or the pig terminal 15b connected to the data interface device 25 is interrupted. At this point, if the data terminal during communication suddenly interrupts, there is a problem in terms of man/machine, so in advance, use the application software of the data terminal to display the message "Due to an interrupt," on the CRT display.
It is conceivable to display guidance such as "This will be interrupted for a while" to improve man-machine skills. In addition, in the telephone main body IA, the control section 3A turns on the LED in response to an interrupt request command.
The lamp 10 is controlled to be lit or flashed to give notice of the arrival of an interrupt voice message. Furthermore, this may be displayed on the Let) display 11, or may be used in combination.

Here, the "communication mote" is a data signal channel that uses a data signal channel between the data terminal 15a connected to the telephone main body 1^ and the data terminal 15b connected to the data interface device 25 connected to an arbitrary extension, The "command mode" refers to a state in which data is being transmitted and received, and "command mode" is a state in which data transmission and reception on the data signal channel between the data terminals 15a and 15b is interrupted, and each data terminal operates as an independent terminal device. Refers to a state in which it can be handled.

When an interrupt request is received in this way, the exchange 19 notifies the user of the called telephone terminal of the interruption in advance, and then transmits the voice from the arbitrary extension telephone 26d to the analog telephone telephone interface 23c. A to D conversion is performed, and the extension telephone 2Sd, which is an analog telephone, is placed on the assigned time slot of the PCM highway 20b on the analog telephone side under the control of the control unit 22, and the time switch 21 is placed in the position where pig communication was being performed. exchange,
The I) Chi highway 20a time slot on the predetermined digital telephone side to which the telephone body IA is assigned is taken out to the transmission control section 2C under the control of the control section 22, and multiplexed with the B1 channel, D channel, etc. as 82 channels, Transmission transformer IBc, le
a to the transmission control section 2a of the telephone main body. Then, it is decomposed into a Bl channel, 132 channels, and a D channel.

In the telephone body [A], the B2 channel switching section 29 and speaker switching section 6 are switched to the cooperative IC 41) side for interrupt communication in advance according to the received interrupt request information on the D channel, and the audio of channel 82 is switched to the cooperative, IC side. 4
After being D/A converted in b, the signal is sent to the speaker, passes through the Jt-F section 6, is amplified by the amplifier 7, and is sent to the speaker 12.
From the speaker 12, the extension telephone 28 that made the interruption
The interruption notification will be made by voice from d.

In addition, if the user of the telephone IA operates the key unit 9 and instructs the voice message data storage mode by interrupt in advance, the control unit 3a activates the switching unit 101 in response to an interrupt request processing command from the exchange 19. Storage device 1 [
12 side, and sends the audio data from the interrupting party sent via the D channel to the storage device 102 for recording t8:. Therefore, the user of this telephone IA may listen to the voice message at this point, and
Even if you miss listening, you can later reproduce the stored data from the storage device 102 and listen to it as described above.

To specifically explain the interrupt request processing during a voice call, during a voice call, when processing an interrupt request, the voice from any extension telephone 2Gd is converted into A y 'D by the analog telephone interface 23d, and then sent to the corresponding extension telephone 28d. The PC on the analog phone side that is assigned
The control unit 22 is installed in the time slot on the M highway 2Ob.
The time slot is exchanged by the time switch 21, and the time slot is entered on the PCM highway 2Oa on the digital telephone side to which the telephone main body 1 is assigned, and under the control of the control unit 22 which is executing interrupt request processing. It is taken out by the transmission control unit 2b, multiplexed with the Bl channel, D channel, etc., and sent to the transmission path 17. from the transmission transformer 16c. The signal is sent to the transmission control section 2a of the telephone main body 1 via the transmission transformer lea, where it is decomposed into the Bl channel, B2 channel, and D channel. The B2 channel switching unit 29 has been switched to the cooperative 4b side for interrupt calls in advance due to the previous interrupt request, so the audio of the B2 channel is transferred to the storage device 102 when the storage mode is set, and to the cooperative when the storage mode is canceled. 4b.

In this copier 4b, the interrupt audio data or read data from the storage device 102 is D/A converted and sent to the speaker switching unit 6, and then sent to the amplifier 7 where it is amplified and sent to the speaker 12. the extension telephone 26 that sent the interruption from the speaker 12;
Play the audio from d.

In this way, if a storage device is installed on the telephone side, and an interrupt request is made during a call, the exchange will temporarily stop communication between the terminals that are currently communicating, put the voice from the telephone terminal that made the interrupt request on the data channel, and interrupt the call. When the optical telephone terminal receives an interrupt request, it notifies the user by displaying the interrupt on the LED lamp or LCD display, then sends the voice data using the pig channel, and then transmits the voice data to the telephone. Since this information can be stored in a storage device and later read out and played aloud, the user on the receiving end does not have to listen to the message at that moment even if the message is received due to an interruption, and the user on the receiving end does not have to listen to the message at that moment. There is no need to miss an incoming message or interrupt the conversation during a call to listen to an incoming message.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with appropriate modifications within the scope of the gist thereof.For example, in the above embodiments, the storage device may be installed in the telephone. However, this can also be installed outside the phone.
Alternatively, it may be provided on the exchange side. Furthermore, in addition to semiconductor memory, storage devices include magnetic disk devices,
A recording tape, an erasable optical disk, etc. can be used.

[Effects of C1-1] As detailed above, according to the present invention, even if there is a voice message due to a sudden interrupt call, you will not miss it, and you will not be able to interrupt the conversation with the other party during the call. Therefore, it is possible to provide an easy-to-use digital telephone system in which the interrupt call function can be used more effectively and the other party is not bothered.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing an embodiment of the present invention, Figure 2 is a book diagram showing the configuration of a conventional device, Figure 3 is a diagram showing the frame structure of data to be transmitted, and Figure 4 explains the prior art. FIG. 1, IA...Telephone body, 2a, 2b, 2c...
transmission control section, 3. 3a, 22-control unit, 4a,
4b-Corporate, 6...Speaker switching section, 9...
・Ki part, 12...Spica, 13...Data transmission/reception processing unit, 1.5a, 15b...De terminal, 19...Switching machine,
23...Analog telephone interface, 25...Data interface l, 28c2Gd, 2Gc...
・Extension telephone, 29...B2 channel switching section, 101
...Switching unit, 102, storage device. Applicant's agent Patent attorney Takehiko Suzue

Claims (1)

[Claims] The terminals are exchanged and connected according to the dial information, and the data is transmitted in a frame structure assigned to the voice signal channel and the data signal channel respectively, and the calling side telephone terminal An exchange that has an interrupt call service function that performs an interrupt call on the called party's telephone when a preset special operation is performed, and a special call that is connected to this exchange and that performs a preset call from another telephone terminal during a call. It has a digital telephone terminal that has an interrupt call function that interrupts the busy telephone by executing an operation, and can send and receive voice and data as well as implement an interrupt call service from other telephones when the telephone is busy. In the digital telephone system, when a special operation for an interrupt call is performed from the calling telephone terminal, the exchange issues an interrupt request command to the called telephone during a call, and commands to temporarily stop data exchange with the called telephone. and a means for transmitting voice data from the calling telephone terminal that performed the interrupt call operation to the called telephone terminal during the call using the data signal channel upon receiving an interrupt request command. , the digital telephone terminal includes a switching means for switching an output path of data of the data signal channel in received data, a storage means for storing received voice data when an interrupt occurs, and an instruction to read data stored in the storage means. read instruction means; when the interrupt request command is given, the output of the switching means is controlled to be stored in the storage means; and the read instruction from the read instruction means controls reading of the storage means; 1. A digital telephone system comprising: control means for controlling the transmission of data to a voice communication system.