JPS5840995A - Sound storing system using digital telephone set - Google Patents

Abstract

PURPOSE:To decrease the converting frequencies of audio signals for a digital telephone set, by storing the digitized audio signal to said digital telephone via a digital exchange and transmitting the audio signal stored by a sound storing device via the above-mentioned exchange directly to the digital telephone respectively. CONSTITUTION:In case a subscriber receives the audio service via a digital telephone set 21, the dial information is fed to a digital telephone exchange 30 with a dial operation. Then a connection line is formed by a controller 31 which gives a connection control to the exchange 30, and a digital audio signal arrives at a sound storing/reproducing device 33. This signal is separated with multiplexing into a digitized audio signal and a control signal through a multiplex separating device 34. These separated signals are written into the prescribed address positions of a storage device 39 from a transfer device 36 and under the control of a controller 40. Thus the digital audio signal is used from a terminal through the device 33. As a result, the circuit is simplified for a converting device 41 in the device 33. At the same time, the sound for service which is stored in a storing device can be reproduced while the audio signal is stored.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention utilizes a digital telephone set and a digital switching system to connect the voice storage and playback system, thereby accumulating the voice signals from the transmitter and simultaneously storing them in the storage shears. The present invention relates to an audio storage system for digital telephones that enables the reproduction of audio for services that are currently being used.

The voice storage and playback system KsP converts the voice input from the telephone or line-of-sight trunk into a digital signal and stores it, in order to provide various voice services to subscribers using the telephone. A method R is provided for reproducing and decoding the audio stored for ll#.
IPb, for example, connects and controls various voice services to subscribers, such as sending out voice mail 01, registering and sending out message mail, registering and sending out answering messages, message messages, and registering and sending out temporary memos.

FIG. 1 is a block diagram of the audio storage and playback system. 1
．． 2.3 is a telephone terminal device; 4 is a network; 5 is a switchboard control device; 6 is a communication control device; 7 is a voice storage and playback device; 8 and 9 are conversion devices that convert voice into digital signals;
10 is a communication control device, 11 is a control device, and 12 is a storage device.

Then, the audio storage and playback device 7 is activated, and the nine conversion devices 8. Or 9. Converts the input audio into a digital signal. The digitalized audio signal is converted into an audio signal under the control of the control device 11.

A storage device that stores messages (for example, file memo 17)
Store in 12. Messages stored in the storage device 12 are stored in the area having addresses corresponding to lines.The nose ring device 10 handles only control signals separately, and controls voice signals and control signals separately. .

The conventional voice storage method is added to an analog telephone exchange, receives an analog voice signal, performs A/D conversion in a storage device, and stores the signal. In addition, when it comes to outputting audio, the storage device converts it into an analog audio signal and sends it to the exchange.This method mainly uses analog telephone exchanges and analog telephones to store voice signals, but the path to the storage device is Since analog audio signals are used in this system, there is a drawback that the audio quality deteriorates due to the effects of noise, attenuation, etc.

It is an object of the present invention to directly store voice signals digitized by a digital telephone in a voice storage device via a digital exchange, and to directly store digitized voice signals stored from the storage device via a digital exchange into a digital telephone. By sending the audio signal to VD conversion,
The purpose is to reduce the number of D/A conversions and provide an efficient KiF voice storage method.

In order to achieve the above object, the present invention digitizes an audio signal and stores it in a storage device in audio storage.
In a digital telephone switching system, a voice signal encoded by a telephone terminal is multiplexed with a control signal (using a multiplexer) and sent via the exchange to a voice storage device.The voice signal encoded by the voice storage device is The audio signal is separated and stored, and encoded in the audio receiving section. In addition, in the case of sending from a storage device,
This system primarily utilizes digital transfer of voice signals by decoding them using a single telephone terminal.

The present invention will be explained in detail below with reference to the drawings.

FIG. 2 is a block diagram illustrating an embodiment of the voice storage system for a digital telephone according to the present invention.

In FIG. 2, reference numeral 21 indicates a digital telephone, 30 a digital 'fL-Kinkokyokai machine, and 33 a voice storage and playback device.

A subscriber uses a digital telephone 21.

When the subscriber wishes to receive voice service, the subscriber performs a specific dial operation using the control button 22 to send dialing information to the digital telephone exchange 30, and dials the digital telephone exchange 30 into M! ! A connection path is formed by the control device 31 that performs connection control, and the digital audio decoding reaches the audio storage and playback device 33.

The original digital audio value code is multi-demultiplexed into a digitized audio signal and a control signal by a demultiplexer 11134.

Is the separated audio signal transferred? S unit [36 to control device 1m
40 controls the memory f! IIE (file memory)
39 predetermined address locations.

Note that the signal separation device 29 separates the signals from the digital telephone 21 into those required by the exchange and the signals required by the voice storage device.
It has a separating machine*@1. Also.

Multiplexer 23. s5B is a device for multiplexing digitized audio signals and control signals (!I, etc.), and 1/11 device 2'!, 34#'i is a device for separating digitized audio signals and control signals. According to this device configuration, only digital audio signals are used from the electronic terminal to the audio storage and playback device.

The conversion bag #L41 in the audio storage and playback device 33 has a simplified circuit configuration, and can simultaneously play back the service audio stored in the storage compartment while storing the audio signal from the transmitting side.

Figure 3 shows an example of multiplexing digitized audio signals on a transmission path. The voice data per subscriber is vo'=
Using the audio PCM conversion value in Va t.

S is a control data bit. The control data includes control signals of the voice storage service device and the exchange facility.

1 time slot is 8KHgOf digital signal.

According to proposal #4 above, voice signals can be digitized and handled in digital telephone switching systems, so it is possible to provide high-quality voice storage services without deteriorating voice quality, and also to use high-quality signaling systems. Since the audio storage and reproduction 7 stems can be set directly without passing through the exchange control device, it is possible to simplify the signal between the control device and the audio storage and reproduction 7 stem. Also, in digital telephones, F
It is possible to directly process digital signals in addition to i-audio signals, and if it is used as a digital signal storage and playback device, it will be possible to provide more general-purpose services than K.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a voice storage and playback system, FIG. 2 is a block diagram showing an embodiment of a voice storage method using a digital telephone according to the present invention, and FIG. FIG. 3 is an explanatory diagram of multiplexing subscriber information; 1, 2.3...Telephone terminal device 1IIt4...
...Network 5...Switch control device
6.10.32.38 Communication control device a341...
... Conversion device 11.40... Control device] 2.39 Performance storage device 21...
Digital telephone 22...Control button 23...
-...Multiplexing device 24...N conversion devices 25...
...Telephone receiver 26...List conversion device 27.
- Surface separation device 28... Display device t 29...
...Signal separation device 3o...Digital 1 31...
...Control device 33...Song audio storage and playback system 3
4... Separation device 35... Multiplexing device [
36...Transfer device 37...Signal device continuation correction form (white side l/111'l)
140f; 3, do hli+I h - Connection with 1111 1#+ t￥6 IT applicant fL location 1+14i Mi-ku 1-1-Il, Yozaki City, Kanagawa Prefecture
1015 (522) 1<Ya Fujitsu Limited (
t91 people) 4, Agent Address: 1, Nakahara-ku, Yozaki City, Shinsen Prefecture: 1015-5, I'ill Naka.
Mi + l life 1? 1111 Akira (41Q Month 11)
13 Kimekura "Tsu 11Lb!In" of "Audio storage and playback device 10" in the 12th and 13th lines of the 3rd edition of the specification of the present application
Correct the mounting dlOJ and fir.

Claims (1)

[Claims] A digital telephone switching system including a digital telephone having the function of converting a voice signal into a digital signal and vice versa, a digital 4-wire exchange, and a voice storage and playback device is used to convert the digitized voice from the digital telephone to a digital telephone. The signal and a digital control signal for controlling the audio storage and playback device are multiplexed and transmitted to an exchange, and are directly transmitted to the audio storage and playback device through the communication path of the armpit switch, and the digital control signal from the audio storage and playback device is multiplexed. A voice storage system using a digital telephone, characterized in that a voice signal and a digital signal for controlling the digital telephone are multiplexed and transmitted to the exchange 11, and transmitted to the digital telephone through a communication path of the exchange.