KR20030057665A - Wire communication system having a multi-channel voice communicating function - Google Patents

Abstract

PURPOSE: A wire communication system equipped with a multi-channel voice communication function is provided to possess a frequency modulation/demodulation device within an exchange system and a wire telephone, construct a channel for transmitting a voice signal in large numbers and transmit the signal, thereby reducing the cost of a transmission line installation. CONSTITUTION: A subscriber interface device unit(2) connects a plurality of wire telephones, modulates/demodulates voice signals of the connected telephones(1A-1B) and then transmits/receives the signals through a multi-channel. An exchange subscriber board unit(4) modulates/demodulates the voice signal transmitted/received through a multi-channel from the subscriber interface device unit(2), thereby performing the call processing. Also, the exchange subscriber board unit(4) is mounted to the inside of the exchange system(3).

Description

Wired communication system having a multi-channel voice communication function

The present invention relates to a wired communication system having a multi-channel voice communication function, and more particularly, to a multi-channel having a frequency modulation and demodulation means in an exchange system and a wired telephone and constituting a plurality of channels for transmitting a voice signal through frequency modulation and demodulation. The present invention relates to a wired communication system equipped with a voice communication function.

In general, as the industrial society develops, information communication systems are widely used to transfer data from one point to another desired more appropriately and quickly. Such communication systems are usually homogeneous or heterogeneous communication devices which are geographically dispersed. In most cases, information devices are connected to a network to enable sharing and communication of resources. In addition, in such a network, a telephone system is usually used through an exchange to exchange information converted into an electric signal with a counterpart.

Then, referring to the conventional telephone system as described above with reference to Figure 1, the interface unit 72 for interfacing the call signal of the external caller transmitted from the switch system 71 via the PSTN network 70, and the interface unit General control of the functions of the telephone system 74 including the function of the call circuit 73 for constant signal processing, for example, modulation / demodulation and amplification of the call signal input and output through the 72 and the interface 72. A microcomputer 75 for storing the communication information signals inputted and outputted through the interface unit 72 according to a function control signal of the microcomputer 75, or a memory unit 76 for storing the missed guidance message; And an LCD 77 for displaying the internal processing status of the telephone system 74 in accordance with the display control signal.

In addition, a keypad 78 for inputting a user's control command signal or a dialing signal is connected to one end of the microcomputer 75.

On the other hand, referring to the operation of the conventional telephone system as described above, first, when the ring signal is input from the switch system 71 through the PSTN network 70 and the interface unit 72, the microcomputer 75 is a ring signal processing unit ( Not shown) through the PSTN network 70 through the PSTN network 70 when the user hooks off the handset 79, the call mode to execute the call mode, the interface unit ( 72 is interfaced through the assigned channel and input to the call circuit unit (73). Then, the call circuit unit 73 processes a predetermined signal and emits it through the handset 79. Then, when the user makes a call with the handset 79, the call signal is processed through the call circuit unit 73, and then the external telephone 80 via the interface unit 72 and the PSTN network 70. To make a normal call.

However, in the conventional telephone system as described above, since the connected wired transmission line 1 can only be used as one voice channel, it is necessary to re-establish the transmission line separately in order to establish an additional voice channel. In addition, the cost has been increased considerably. Also, if multiple phones are connected by using a wired transmission line, the same call is formed on all phones. There was a problem letting.

Accordingly, the present invention has been invented to solve the conventional problems as described above, by providing a frequency modulation and demodulation means in the switchboard system and the landline telephone, and transmitting a plurality of channels through the frequency modulation and demodulation, so that a separate Wireline with multi-channel voice communication function can significantly reduce the temporary equipment use of transmission line of wired communication system because multi-channel transmission can be executed by using existing hypothetical transmission line without installing communication line. Its purpose is to provide a communication system.

It is another object of the present invention to process a voice signal through a plurality of channels to reduce the frequency of communication delays, thereby providing a wired communication system having a multi-channel voice communication function that significantly improves the functionality of the wired communication system accordingly. have.

In order to achieve the above object, the present invention provides a subscriber matching device unit for connecting a plurality of wired telephones, and converting / demodulating voice signals of the connected phones to transmit and receive in multiple channels, and transmitting and receiving in multiple channels from the subscriber matching device unit. The present invention provides a wired communication system having a multi-channel voice communication function consisting of an exchange subscriber board unit mounted on an inside of an exchange system.

1 is an explanatory diagram illustrating a conventional wired communication system.

2 is an explanatory diagram illustrating a system of the present invention.

<Detailed Description of Codes>

1A-N: Telephone 2: Subscriber Matching Unit

3: exchange system 4: exchange subscriber board

5: terminal matching unit 6: low pass filter

7: modem 8: band filter

9: transmission line 10: line signal processing unit

11: Line matching circuit 12: Low pass filter

13: Band filter 14: Modem

15: subscriber matching unit 16: slick unit

17: control unit 18: system matching unit

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the present invention provides a subscriber matching device unit 2 which connects a large number of wire telephones and modulates / demodulates voice signals of the connected telephones 1A-N and transmits and receives them in multiple channels. It consists of an exchange subscriber board unit (4) which modulates / demodulates a voice signal transmitted / received in multiple channels from the subscriber matching device unit (2) to call processing and is mounted inside the exchange system (3).

Then, the subscriber matching device section 2 matches the voice signals input from the plurality of wire telephones 1A-N and then outputs one voice signal by assigning one channel ch1 without modulation and outputs the other voice signal. Filter the audio signal output from the terminal matching unit 5 for transmitting the signal to the channel ch2 allocated for modulation and the unmodulated channel ch1 of the terminal matching unit 5 to low frequency (0 to 4 kHz). A modem for modulating the low-pass filter 6 and other voice signals output from the modulation channel ch2 of the terminal matching section 5 and demodulating and outputting the modulated voice signals received from the exchange system 3 side. (7), a band pass filter (8) for band filtering (6 to 10 kHz) the voice signal modulated by the modem (7) to a modulation channel signal different from the frequency of the low pass filter (6), and the low pass The audio signals of the plurality of channels inputted from the filter 6 and the band filter 8 are regularly Amplified by using the following (9) to the transmission line transfer in the exchange system (3) and composed of the voice channel signals transmitted in the course of that station to track the signal processing unit 10 for receiving processing.

In addition, the switchboard subscriber board unit 4 amplifies the voice signals of the plurality of channels transmitted from the subscriber matching device unit 2 to a predetermined level, separates them for each channel signal, and outputs the plurality of voice channels through the reverse process. A line matching circuit section 11 for merging and outputting signals, and a low pass filter 12 for filtering a voice signal output from the unmodulated channel ch1 of the line matching circuit section 11 at low frequencies (0 to 4 kHz); And a band filter 13 for band filtering (6 to 10 kHz) the voice signal via the modulation channel ch2 output from the line matching circuit unit 11 to a demodulation channel signal different from the frequency of the low pass filter 12. ), A modem 14 for demodulating another voice signal output from the modulation channel ch2 of the band pass filter 13 and modulating and outputting a voice signal transmitted to the telephones 1A-N, and the low pass filter. (12) and a plurality of channels input from the bandpass filter (13) Amplifying voice signals to a predetermined level, outputting them to the next stage, and receiving and processing voice channel signals transmitted through the reverse process, and voice channel signals inputted and outputted through the subscriber matching unit 15; Control unit for controlling the overall function of the exchange system 3, including a slick unit 16 for interfacing the slick unit and performing a hook on / off function including a ring signal, and a function of the slick unit 16 ( 17) and the voice channel signals inputted and outputted through the slick unit 16 according to the function control signal of the controller 17. For example, the analog signal is converted into a digital signal and the digital signal is converted into an analog signal. It includes a system matching unit 18 for transmitting.

Next, the operation and effects of the present invention system as described above will be described.

According to the present invention, when a voice signal is input from a plurality of telephones 1A and 1B to which the terminal matching unit 5 of the subscriber matching device unit 2 is connected, the voice signals are matched. One channel ch1 is allocated and output to the low pass filter 6, and the other voice signal is transmitted to the modem 7 for the channel ch2 allocated for modulation. Then, the low pass filter 6 filters the voice signal output from the unmodulated channel ch1 of the terminal matching unit 5 by low frequency (0 to 4 kHz) and outputs it to the line signal processing unit 10. At this time, the modem 7 modulates another voice signal output from the modulation channel ch2 of the terminal matching unit 5 and then outputs it to the band filter 8. The band filter 8 band-passes the voice signal modulated by the modem 7 to a modulation channel signal different from the frequency of the low pass filter 6 (6 to 10 kHz), thereby providing the line signal processing unit 10. To the output. Accordingly, the line signal processing unit 10 amplifies a plurality of audio signals inputted from the low pass filter 6 and the band pass filter 8 to a predetermined level and then transmits the signals of the switch system 3 through the transmission line 9. Transfer to line matching circuit section (11).

Meanwhile, the line matching circuit unit 11 of the switch system 3 amplifies a plurality of channels of audio signals transmitted from the line signal processing unit 10 of the subscriber matching device unit 2 to a predetermined level, and then, for example, for each channel signal, After separating the unmodulated channel (ch1) and the modulation channel (ch2), the audio signal through the unmodulated channel (ch1) is output to the low pass filter 12 as it is, and the audio signal through the modulation channel (ch2) is a band Output to the filter (13). Then, the low pass filter 12 filters the voice signal output from the unmodulated channel ch1 of the line matching circuit 11 to low frequency (0 to 4 kHz) and outputs it to the subscriber matching unit 15. In this case, the band filter 13 performs band filtering (6 to 6) on the audio signal passing through the modulation channel ch2 output from the line matching circuit unit 11 into a demodulation channel signal different from the frequency of the low pass filter 12. 10 kHz) and output to the modem 14. In addition, the modem 14 demodulates the audio signal output from the modulation channel ch2 of the band pass filter 13 and then outputs it to the subscriber matching unit 15.

Then, the subscriber matching unit 15 amplifies the voice signals of the plurality of channels inputted from the low pass filter 12 and the band pass filter 13 to a predetermined level and outputs them to the slick unit 16. At this time, the slick The unit 16 interfaces a plurality of voice channel signals input through the subscriber matching unit 15 according to the function control signal of the controller 17 and outputs the same to the system matching unit 18.

Then, the system matching unit 18 converts the voice channel signals input and output through the slick unit 16 according to the function control signal of the control unit 17. For example, the analog signal is converted into a digital signal and the digital signal is converted into an analog signal. It converts and transmits each call channel so that the call function is executed. That is, the voice call function is executed simultaneously using multiple channels through one transmission path.

On the other hand, since a plurality of voice signals inputted from the external terminal to the switchboard system 3 are also transmitted to the plurality of telephones through the reverse process of the above process, this also uses a plurality of channels through one transmission path 9 The call function is simultaneously executed by the telephone.

As described above, the present invention has a conventional hypothesis by providing a frequency modulation demodulation means in an exchange system and a wired telephone, and transmitting a plurality of channels for transmitting a voice signal through frequency modulation and demodulation. Since the multi-channel transmission can be performed by using the transmission line as it is, it has the advantage of significantly reducing the temporary equipment use of the transmission line of the wired communication system.

In addition, according to the present invention, since the processing of the voice signal through a plurality of channels is reduced the frequency of occurrence of communication delay, the functionality of the wired communication system is also significantly improved accordingly.

Claims (3)

A subscriber matching device unit for connecting a plurality of landline telephones and modulating / demodulating voice signals of the connected telephones to transmit and receive in multiple channels, and converting / demodulating voice signals transmitted / received in multiple channels from the subscriber matching device unit to process a call. Wireline communication system with a multi-channel voice communication function, characterized in that consisting of a switchboard subscriber board mounted inside the switchboard system. The apparatus of claim 1, wherein the subscriber matching device matches a voice signal input from a plurality of landline telephones, and then outputs one voice signal without modulating one channel and outputs another voice signal to a channel allocated for modulation. A low pass filter for filtering the voice signal outputted from the unmodulated channel of the terminal matcher at low frequency, another voice signal outputted from the modulation channel of the terminal matcher, and received from the exchange system A modem for demodulating and outputting a modulated voice signal, a band filter for band-filtering the voice signal modulated from the modem into a modulation channel signal different from the frequency of the low pass filter, and inputted from the low pass filter and the band filter Amplify multiple voice signals to a certain level and then transmit them to the exchange system through the transmission line And a line signal processor for receiving and processing voice channel signals transmitted in a reverse process. 2. The apparatus of claim 1, wherein the switchboard subscriber board unit amplifies a plurality of channels of voice signals transmitted from the subscriber matching device unit to a predetermined level, separates them for each channel signal, and merges and outputs the plurality of voice channel signals through a reverse process. A low pass filter for filtering the voice signal output from the unmodulated channel of the line matching circuit unit at low frequency, and a voice signal passing through the modulation channel output from the line matching circuit unit, and the frequency of the low pass filter. A band filter for band filtering to another demodulation channel signal, a modem for demodulating another voice signal output from the modulation channel of the band filter and modulating and outputting a voice signal transmitted to a telephone side, and the low pass filter and the band filter. After amplifying the input voice signals to a certain level and outputting to the next stage Multi-channel communication system having a wired voice communication of the voice channel signals transmitted in the course of the station, characterized in that including a Subscriber Line receiving treatment.