Telephone communication system

FIELD: telephone communication systems combined with other electronic systems.

SUBSTANCE: proposed telephone communication system that can be used for voice communications between subscribers of local telephone networks by means of public computer networks has telephone set, local telephone communication line, interface unit, analog-to-digital converter, signal distributor, voice identification device, voice-frequency dialing identification device, pulse dialing signal detector, identified number transmission device, coder, compressor, computer, public computer network, decompressor, decoder, voice recovery device (voice synthesizer), called number information converter, voice and called signal transfer queuing device, and digital-to-analog converter.

EFFECT: enhanced quality of servicing subscriber using public computer network; enlarged functional capabilities of system.

1 cl, 1 dwg

 

The invention relates to techniques for electronic communication, namely, telephone communication systems, combined with other electronic systems, and can be used to make voice communication between subscribers of local telephone networks with computer networks.

The number of known systems, telephone communication with computers on transmitting and receiving sides, interconnected by a communication line, an analog-to-digital and digital-analog converters, the compressor and decompressor, mixer, modems, and other devices[1, 2, 3].

However, these systems have several disadvantages, including hardware complexity when telephone communications between users over a computer network (PSTN), which limits the possibility of their use in modern networks and communication systems.

Of the known systems telephone closest to the technical essence is the telephone system described in [4].

This system contains a transmitting-side telephone, local telephone line, the detector-directional signals, the recognition device touchtone, the transfer device and the recognized number in the form of a standard Protocol computer network, analog-to-digital Converter, compressor, computer, under the United States to a network of General use, and receiving side of the system contains a telephone, local telephone line, the transmitter information of the called number, dial tone, the device priority of the voice and tone signals, a computer connected to a computer network for General use, a decompressor, a digital / analogue Converter and the transmitter speech signal.

Known telephone system has the following disadvantages.

In the known system, judging by its structure and the description link for the educated tract is in one direction and alternately, and therefore the quality of communication and quality customer service get low. In addition, the system provides the subscriber lines with separate transmitter and receiver paths, which significantly complicates the process of establishing the connection and communication through the lines and increases the amount of equipment required.

The aim of the invention is to improve the quality of customer care when working on the computer network for General use and expand the functionality of the system.

This objective is achieved in that in a telephone system, containing a telephone connected to a local telephone line, analog-to-digital Converter, the soap is the divisor signal, the recognition device, a touch-tone, the output of which is connected to the input of the transmission device of the recognized number, the compressor, the output of which is connected to the computer connected to the computer network for General use, the decompressor, the input connected to the output of the computer, the transmitter information of the called number, the output of which is connected to the first input device priority voice and ringing signals, digital to analog Converter, put the block matching detector signal pulse dialing, the device speech recognition, encoder, decoder and restore device speech, while the local telephone line is connected to the input-output block matching, the output of which is connected to the analog-digital Converter, the output of which is connected to the input of the distributor signals, the output of which is connected in parallel to the inputs of the Recognizer speech recognition device, a touch-tone and detector signal pulse dialing, the output of which is connected to an additional input of the transfer of the recognized number, the output of which is connected to the first encoder input, a second input connected to the output of the speech recognition, the first and second outputs of the encoder are connected respectively to the input of the compressor and to the second is the input of the computer, the output of the decompressor connected to the input of the decoder, a second input connected with the second computer, the first and second outputs of the decoder are connected respectively to the inputs of the inverter information about the called number and device recovery speech, the output of which is connected with the second input device priority voice and ringing signals, auxiliary input of which is connected to the third output of the decoder, the output sequence of voice and ringing signals connected to the input of the digital to analogue Converter, the output of which is connected to the input of block matching.

Comparative analysis with the prototype shows that the proposed telephone system has new blocks: block matching, speech recognition, detector signal pulse dialing, encoder, decoder and restore device speech, as well as the changing relationships between the other elements of the system.

All newly introduced in the proposed phone system blocks are feasible, well known to experts in the art and more art, given the following explanations for their reproduction is not required.

This solution differs significantly from the known in the art. The claimed solution obvious clicks the om does not follow from the prior art and involves an inventive step.

Thus, the inventive telephone system satisfies the criterion of "novelty".

However, their introduction in the specified communication with other circuit elements in the inventive telephone system of the above blocks are new properties, which leads to improving the quality of customer service by reducing the time required to establish connections and ensure the ability to conduct full-duplex two-way communication over a computer network for General use, as well as to expand the functionality of the system by ensuring that its work on two - and four-wire subscriber lines using telephones with DTMF and pulse dialing. This allows to conclude that the technical solutions according to the criterion of "significant differences".

The inventive solution can be implemented using the existing terminal means of communication conduct of communication and equipment used in telephone exchanges and computer networks, and is industrially applicable.

The drawing shows a functional diagram of the proposed system telephone.

The proposed telephone system includes a telephone device 1, the local telephone communication line 2, the block matching 3, analog-to-digital Converter (ADC) 4, the dispenser signalov, the device speech recognition 6, device 7 recognition touchtone signals, the detector 8 signal pulse dial transmission device 9 of the recognized number, the encoder 10, a compressor 11, a computer 12, computer network 13 for General use, the decompressor 14, a decoder 15, a device restore speech (speech synthesizer) 16, the transmitter information about the callee number 17, the device queue 18 voice and ringing signals, digital to analog Converter (DAC) 19.

The telephone system includes a telephone apparatus 1, connected via a local telephone line 2 and the block matching 3 to the input of the analog-to-digital Converter 4, the output of which is connected to the input of the distributor signals 5. The output of the distributor signals 5 are connected in parallel to the inputs of the device speech recognition 6, device recognition signal tone dial 7 and the detector signal pulse dialing 8. The output signal recognition touchtone 7 is connected to the input of the transmission device recognized number 9, an additional input connected to the detector output signals pulse dialing 8, and the output of the transmission device recognized number 9 is connected to the first input of the encoder 10, a second input connected to the output of the speech recognition 6. The first output of the encoder is 10 connected to the input of the compressor 11, the output of which is connected to the first input of the computer 12 connected through the network port with the network 13 for General use. The second output of the encoder 10 is connected to a second input of the computer 12, the first output of which is connected to the input of the decompressor 14, the output of which is connected to the first input of the decoder 15, a second input connected to the second output of the computer 12. The first output of the decoder 15 through the inverter information about callee number 17 connected to the first input device priority voice and ringing signals 18, the second input is through the recovery of speech 16 is connected to the second output of the decoder 15, the third output of which is connected to an additional input device priority voice and ringing signals 18, the output of which is connected to the input of digital-to-analogue Converter 19, the output of which is connected to the input of block matching 3 connected to the input-output local telephone line 2.

The block matching 3 is designed for separation of the receiving and transmitting part of the channel (path), coordination of the levels of the signals in the transmitting and receiving paths, and protect equipment from overloads caused by transients. It includes differential system and concordance of the transmitting and receiving paths.

Analog-to-digital pre is OBRAZOVATEL 4 is designed to receive a digital signal by converting coming from a local telephone line 2 through the block matching 3 of the input speech and ringing signals to a digital signal, for example, using pulse code modulation (PCM signal).

Analog-4 digital and digital to analog converters 19 are used to convert analog voice and service signals into a digital sequence, recover digital sequence of digital speech and utility signals and convert back to analog form.

Unit 5 carries out the distribution of signals output from the analog-to-digital Converter (ADC) 4 on the device speech recognition 6, the device recognition signal tone dial 7 and the detector signal pulse dialing 8.

The device speech recognition 6 is intended to highlight the voice messages from the entire set of signals at its input, and identify pauses in the bargaining process. This device can be implemented using both hardware and using software.

The device 7 and the detector 8 are separated from the digital sequence of calling signals in digital form and transmit them to the corresponding inputs of a transmission device 9 of the recognized number.

The encoder 10 and the decoder 15 are used to convert digital sequences in the packaged data and organization of these computer packages the public network, the transmission through to mpressor 11 packets in the network, and to receive packets from the network and play them on the basis of digital sequences in the form of pulse code signals.

As the encoder 10 may be used EVRC encoder, or it can be implemented using QCELP-coder company Qualcomm that implements the encoding procedure based on linear prediction code excitation, for a transmission rate of 8 Kbps or 13 Kbit/S.

The compressor 11 performs compression packetized data voice message and ringing tones to be able to share them via system bus of the computer 12.

The functions of the computer 12 includes the solution of problems related to the organization of interfaces, generation and detection of signals subscription detection and management modes of telephone conversations, connection and disconnection to the network. The computer 12 is able to transmit and receive data in real-time. The computer's microprocessor 12 controls the delivery network packetized data from the output of the speech recognition encoder 6 through 10 and provides dial a phone number from the output transmission device 9 of the recognized number.

The decompressor 14 performs playback (recovery) packetized data voice and ringing signals from the packets received from the system bus of the computer 12, and the transmission of the x input to the decoder 15.

Restore device speech 16 is intended to highlight the voice messages from the digital sequence coming from the output of the decoder 15, adjust the volume and gain of the selected signals.

The main functions of the system when the connection type subscriber-to-subscriber” are as follows:

detection and generation of signals subscriber signalling;

conversion of signals subscriber signaling in the data packets and Vice versa;

converting the voice signal into data packets and Vice versa;

the connection of subscribers;

transmission network signaling and voice packets;

the separation of the connection.

Information current view of the process of speech dialogue in the proposed telephone system has the following three phases:

1) the connection of subscribers;

2) exchange of information (voice);

3) disconnection of subscribers.

In phases 1 and 3 only transmits control signals (data) and the identification or separation of the desired compounds. During phase 2 subscribers share as control and information signals (data).

The proposed system works as follows.

When the subscriber dials the number on the phone and 1 of the transmitting side of the connection occurs over a local telephone line 2. Call in the form of a tone is if pulse dialing from the telephone 1, after passing through the block matching 3 and analog-to-digital Converter 4, is fed to the recognition device touchtone 7 and the detector signal pulse dialing 8. Output of these devices signals in digital form are received at the respective inputs of the transmission device 9 of the recognized number, with which they are transmitted to the corresponding inputs of the encoder 10, which converts them into packetized data (PD) and transmits them to the input of the compressor 11. The compressor 11 carries out compression of the audio signal for transmission to the destination through the system bus of the computer 12. From the output of the computer 12 ringtones in the form of a standard Protocol is transmitted in a computer network 13 for General use.

At the receiving side opposite station ringtones in the form of a standard Protocol of a computer network 13 is received on the system bus of the computer 12 and its output is transmitted to the decompressor 14, which performs playback (recovery) of the compressed signal and transmit it to the decoder 15. The decoder 15 performs the inverse transform of the packaged data to a digital signal in the form of a PCM signal, which is supplied to the Converter information 17 on the called number. In block 17 of the received information is converted into a ringtone in digital form, through which the device 18 of the priority lane is giving a speech and ringing signals is fed to digital to analog Converter (DAC) 19, which converts the received information into an analog ringing signal. Output digital-to-analogue Converter 19 a ringing signal is sent to the local telephone line 2 that is already open by a dial tone, and received phone 1 at the receiving side.

When the new call is answered at the receiving side, the receiving voice messages is as follows.

The analog voice signal entered from a microphone (or handset) phone 1, received in the local telephone line 2, the block matching 3 and then to analog-to-digital Converter 4, in which it is converted into a digital signal (pulse-code modulation (PCM) and through the device, speech recognition 6 is transmitted to the input of the encoder 10, which converts the voice message in the stacked data (PD) and transmits them to the input of the compressor 11. The compressor 11 performs compression packetized data voice messages for transmission on the system bus of the computer 12. The computer 12 stores in non-volatile memory control program and initial service data, through which he manages the entire process of establishing connections and negotiating over the network. From the output of the computer 12 tones of voice messages in the form of a standard Protocol is transmitted in a computer network 13 total gender is increased.

At the receiving side telephone communications system packetized data voice messages from a computer network 13 for General use comes on the same computer 12, equipped with software for implementation of a standard exchange of digital information within a common network protocols. From the output of the computer 12 these data are received at the decompressor 14, which performs the recovery of the packetized data voice messages and sends them to the input of the decoder 15. The decoder 15 performs the inverse transform of the packaged data to a digital signal (pulse-code modulation. From the output of the decoder 15 PCM signal through the speech recognition 16 and the device priority of the transmission 18 speech and ringing signals received at the input of digital-to-analogue Converter 19 which converts it into an analog signal. Inverter output 19 a voice message in analog form through the block matching 3 goes to the local telephone line 2 that is already open signal set and associated with the telephone apparatus 1.

Both operations - transformation packages and telephone signals are produced simultaneously, which allows full-duplex (two-sided) conversation.

Technical efficiency of the proposed telephone system is to improve the quality of customer service, meeting emich by reducing the time required to establish connections and enable logging via the computer network, duplex (two-sided negotiations, and increase functionality at the expense of work on two - and four-wire subscriber lines using different phones with the system tone or pulse dialing the subscriber.

The quality of communication in the telephone system in comparison with the prototype, which was allowed distortion and interruption of speech, has increased significantly. This is achieved by improving the voice coding and recover the lost packets, adjust the volume and gain of the signal, which has allowed to reach a level where it is understood subscribers well enough.

The positive factor of the proposed phone system is the speed of the connection and provision of quality duplex telephone communication subscribers in a packet and switching of digital signals.

Sources of information

1. FR application No. 2408258, CL H 04 M 7/00, 1979.

2. US patent No. 5325423, CL H 04 M 11/00, 1995.

3. RU patent No. 2187902, CL H 04 M 1/27, 2002.

4. RU patent No. 2105425, CL H 04 M 11/00, 1998 (prototype).

Telephone system containing a telephone connected to a local telephone line, analog-to-digital Converter, directional signals, the recognition device, a touch-tone, the output of which is connected with the Odom transmission device recognized number, the compressor, the output of which is connected to the computer connected to the computer network for General use, the decompressor, the input connected to the output of the computer, the transmitter information of the called number, the output of which is connected to the first input device priority voice and ringing signals, d / a Converter, characterized in that it introduced the block matching detector signal pulse dialing, the device speech recognition, encoder, decoder and restore device speech, while the local telephone line is connected to the input-output block matching, the output of which is connected to the input of analog-to-digital Converter, the output of which is connected to the input of the distributor signals, the output of which is connected in parallel to the inputs of the Recognizer speech recognition device, a touch-tone and detector signal pulse dialing, the output of which is connected to an additional input of the transfer of the recognized number, the output of which is connected to the first encoder input, a second input connected to the output of the speech recognition, the first and second outputs of the encoder are connected respectively to the input of the compressor and to the second input of the computer, the output of the decompressor connected to the input of the decoder, a second input connection of the EN with the second computer, the first and second outputs of the decoder are connected respectively to the inputs of the inverter information about the called number and device recovery speech, the output of which is connected with the second input device priority voice and ringing signals, auxiliary input of which is connected to the third output of the decoder, the output sequence of voice and ringing signals connected to the input of the digital to analogue Converter, the output of which is connected to the input of block matching.



 

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