KR20000043476A - Radio interface unit of wireless local loop system building modems thereon - Google Patents

Abstract

PURPOSE: A radio interface unit(RIU) of a wireless local loop(WLL) system is provided to improve signal characteristics by building a digital signal processing(DSP) chip performing modem functions and vocoder functions, or by building modems composed of rest compositions except a RIU composition which is overlapped with an interface circuit composition in the RIU. CONSTITUTION: When a personal computer(PC)/terminal transmits data, and if the transmitted data is transmitted to a controller(28) through a data port and RS-232C buffer/MUX(multiplexers)(30-1,30-2), a radio interface unit(RIU) of a wireless local loop(WLL) system transmits the data to a high speed network only data/internet server of an interworking(IWF) path, through time switches(23-1,23-2), code division multiple access(CDMA) modems(22-1,22-2), a radio frequency(RF) unit(21), and a radio port(RP). If the data is transmitted to a public switched telephone network(PSTN) modem(29), the RIU converts the data into analog signals in the PSTN modem. The RIU transmits the data to a PSTN data/internet server through MUX(32-1,32-2), CODECs(coder-decoders)(25-1,25-2), vocoders(24-1,24-2), the time switches, the CDMA modems, the RF unit, and the RP. If the PC/terminal receives data, and if the received data is from the high speed network only data/internet server, the RIU receives the dat through the RP, the RF unit, the CDMA modems, the time switches, the controller, the RS-232C buffer/MUX, and the data ports. If the received data is from the PSTN data/internet server, the RIU receives the data to the RP, the RF unit, the CDMA modems, the time switches, the vocoders, the CODECs, the MUX, and the PSTN modem. The RIU converts the data into digital data in the PSTN modem, and receives the data in the PC/terminal through the RS-232 buffer/MUX and the data port.

Description

Subscriber device of wireless subscriber network system with built-in modem function

The present invention relates to a Public Switched Telephone Network (hereinafter referred to as "RIU") in a subscriber interface of a Wireless Local Loop (WLL) system. PSTN ') or modem (vocoder) and DSP (Digital Signal Processing) chip (Chip) to perform modem functions, built-in data communication between the server of the PSTN and the WLL subscriber using the modem It relates to the RIU of a WLL system with a built-in modem function.

In general, the WLL system is a system that forms a link from a telephone company to a subscriber terminal by using a wireless system instead of a wired line. The WLL system can be configured in a short period of time because installation and maintenance cost per subscriber is lower than that of a conventional wired network, PSTN. In addition, it is expected to play an important role in the construction of information infrastructure in the future as it has the advantage of being easy to maintain.

As shown in FIG. 1, the WLL system includes a RIU 110, a base station 900 for forming a radio link with the RIU 110, and a RP 900. A base station controller (hereinafter referred to as 'RPC') 800 and a WLL exchanger 600 for controlling the 900.

In the WLL system configured as described above, the RPC 800 performs a data service with a subscriber station telephone 100 of a wired network that performs a voice service through the WLL exchanger 600. Is connected to the PSTN 400 connected to the PSTN 400, and is connected to the high-speed data service network / Internet network 500 connected to the high-speed network dedicated data / Internet server 300 that performs data service through the IWF (Inter Working Function) 700. do.

The RIU 110 is connected to the telephone 111 of the subscriber's home, directly connected to the PC or the terminal 113, or connected to the PC or the terminal 113 through the PSTN modem 112.

In the WLL system configured as described above, when the subscriber using the telephone 111 makes a phone call with the subscriber using the telephone 100, the RIU 110, the RP 900, the RPC 800, and the WLL exchanger 600 are used. ), And performs a voice service through the path of the PSTN 400, and the subscriber using the telephone 111 to communicate with the PSTN data / Internet server 200 when using an external modem and an internal modem. When using an external modem, a PC or terminal 113, a modem for PSTN 112, RIU 110, RP 900, RPC 800, WLL switch 600, PSTN 400, PSTN Data communication is performed through the path of the data / internet server 200, and when using an internal modem, a PC or terminal 113, RIU 110, RP 900, RPC 800, WLL switch 600, Data communication is performed through the paths of the PSTN 400 and the PSTN data / Internet server 200.

When the subscriber using the telephone 111 communicates with the high-speed network dedicated data / internet server 300, the PC or terminal 113, the RIU 110, the RP 900, the RPC 800, and the IWF The data communication is performed through the path 700, the high speed data service network / Internet network 500, and the high speed network dedicated data / Internet server 300.

As described above, the WLL system provides a data service with an Integrated Services Digital Network (ISDN) in addition to the voice service, since the data service through the data port of the RIU 110 provides a speed of up to 144 Kbps. Compared to the data services of 56Kbps and 33.6Kbps provided by the existing PSTN 400, it is an important factor that enables service competitiveness.

In the WLL system configured as described above, the RIU 110 is connected to the telephone 111 through the line port of RJ-11, and the data port of the PC or terminal 113 and RS-232C through the line port of RJ-11. It is connected to the modem for PSTN 112 is connected via, and directly connected to the PC or terminal 113 through the RS-232C port.

At this time, the RIU 110 has a DM (Diagnostic Monitor) port of RS-232C which is used only by network operators only during installation or maintenance.

As shown in FIG. 2, the RIU 110 of the WLL system configured as described above includes a radio frequency (RF) unit 1, a code division multiple access (CDMA) modem unit 2-1 and 2, and a time switch ( Time Switch (3-1, 2), Vocoder (4-1, 2), Codec (5-1, 2), SLIC (6-1, 2), Line Line Port (7-1, 2), Control Unit (8), RS-232C Buffer (9-1, 2), Data Port (10-1), DM Port (10-2) The phone 11 is connected to one line port 7-1, and the modem 12 for PSTN for data communication is connected to the other line port 7-2. 12 is connected to a PC or terminal 13 connected to the data port 10-1.

On the other hand, in the data communication in the WLL system configured as described above, the conventional WLL subscriber to the PSTN data / Internet server 200 or PC connected to the PSTN (400) for the PSTN external modem for 1: 1 data communication The modem 12 had to be used through the voice port.

At this time, the modem 12 for the PSTN connected to the RIU 110 and a voice signal through the RJ-11 port is an RJ-11 port, a data access arrangement (DAA) for connecting to a telephone line, a hybrid conversion circuit, It consists of serial DAC (Digital to Analog Converter) / ADC (Analog to Digital Converter), DSP (Digital Modem), RS-232C buffer, and data port.

However, in the configuration of the PSTN modem 12 for interfacing with the RIU 110 as described above, the configuration such as the RJ-11 port, the DAA, the hybrid conversion circuit, the RS-232C buffer, and the data port is the RIU 110. As a result of overlapping with the interface circuit configuration, there is a problem that the signal characteristics are deteriorated as well as causing a cost increase.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a built-in modem except for a configuration of an RIU that overlaps with a configuration for interfacing with a RIU in a WLL system, or to provide vocoder and modem functions. It is to provide RIU of WLL system with built-in modem function to improve the signal characteristics by integrating DSP chip and to reduce cost while smoothly performing data communication between PSTN server and WLL subscriber.

1 is a view for explaining a voice service and data service path of a typical wireless subscriber network system,

2 is a block diagram of a subscriber device of a general wireless subscriber network system;

3 is a block diagram of a subscriber device of a wireless subscriber network system incorporating a modem function of the present invention for performing an analog interface;

4 is a block diagram of a subscriber device of a wireless subscriber network system incorporating a modem function of the present invention for performing a digital interface;

5 is a block diagram of a subscriber device of a wireless subscriber network system incorporating a modem function according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

21,41: RF unit 22-1,2, 42-1,2: CDMA modem unit

23-1,2, 43-1,2: Time switch 24-1,2: Vocoder

25-1,2, 45-1,2: codec section 26-1,2, 46-1,2: slick section

27-1,2, 47-1,2: Line port 44: DSP

28,48: control unit 29: modem for PSTN

30-1,2, 49-1,2: RS-232C buffer and mux

31-1, 50-1: Data port 31-2, 50-2: DM port

32-1,2: mux 33, 51: telephone

34, 52: Fax 35, 53: PC or Terminal

The RIU of the WLL system incorporating the modem function of the present invention for achieving this object is a time switch when the data is transmitted to the control unit through the data port, RS-232C buffer and mux when data is transmitted from a PC or a terminal. Transmit to the high speed network dedicated data / internet server of IWF path through CDMA modem part, RF part, RP, and transmit data to PSTN modem through data port, RS-232C buffer and MUX. After converting to PSTN data / internet server in PSTN path through mux, codec, vocoder, time switch, CDMA modem, RF, and RP, when receiving data from PC or terminal, Data from the high-speed network dedicated data / Internet server of the IWF path is received through the RP, RF, CDMA modem, time switch, controller, RS-232C buffer and mux, and data port. If the received data is data from the PSTN data / Internet server of the PSTN path, the RP, RF unit, CDMA modem unit, time switch, vocoder, codec unit, mux and modem for PSTN are received. After conversion, it can receive from PC or terminal through RS-232C buffer, MUX and data port.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the RIU of a WLL system with a modem function according to the present invention.

FIG. 3 is a block diagram of a RIU of a WLL system incorporating a modem function of the present invention performing an analog interface, and converts an RF signal received from the RP 900 into an IF signal or converts an IF signal input from a subscriber to CDMA demodulation of the RF unit 21 and the IF signal converted by the RF unit 21 into a baseband signal or CDMA modulation of the input baseband signal into an IF signal and output to the RF unit 21. Switching the baseband signals converted by the CDMA modem units 22-1 and 2 and the baseband signals converted by the CDMA modem units 22-1 and 2 for each time slot and outputting or outputting the baseband signals for the corresponding path for each time slot. Time switches 23-1 and 2 for switching and outputting to the CDMA modem units 22-1 and 2 of the corresponding paths, and 16 Kbps data switched and output from the time switches 23-1 and 2 for ADPCM ( Adaptive Differential Pulse Code Modulation (LD-CELP) or Low Delay-Code Excited Linear Prediction) Vocoders 24-1 and 2 for demodulating PCM (Pulse Code Modulation) data according to a compression algorithm or modulating the input PCM data into 16 Kbps data and outputting them to the time switches 23-1 and 2; Codec units 25-1 and 2 for converting the PCM data demodulated by the vocoder 24-1 and 2 into analog signals or converting the input analog signal into PCM data and outputting the same to the vocoder 24-1 and 2. And the impedance matched analog signal converted by the codec units 25-1 and 2 to the telephone 33 or the fax 34 on the subscriber side through the line ports 27-1 and 2 or to the subscriber side. An analog signal input from the telephone 33 or the fax 34 is input through the line ports 27-1 and 2, and then the impedance matched and outputted to the codec units 25-1 and 2 to the codec unit 25-1. It consists of 1,2).

And, the control unit for controlling the modem, RS-232C buffer and mux (mux), mux for outputting the data received in the RIU according to the corresponding path or output the data input from the PC or terminal (35) according to the corresponding path And digital data output from the PC or the terminal 35 through the data port 31-1 and the DM port 31-2 according to the control signal of the controller 28. Selectively switching to the control unit 28 and outputting or selectively switching digital data output from the PSTN modem or the control unit 28 to the PC or terminal 35 through the data port 31-1 and the DM port 31-2. RS-232C buffer and mux (30-1,2) and serial DAC / ADC and digital modem to output to the digital data output from the RS-232C buffer and mux (30-1,2) To an analog signal that is converted to a signal or output through a mux The PSTN modem 29 for converting the digital data into the RS-232C buffer and the muxes 30-1 and 2, and the codec units 25-1 and 2 according to the control signals of the controller 28. Selects and switches the converted analog signal to the slick unit 26-1 or 2 or the modem for the PSTN 29, or outputs the analog signal output from the slick unit 26-1 or 2 or the modem for the PSTN 29 And muxes 32-1 and 2 which are selectively switched and output to the codec units 25-1 and 2.

4 is a block diagram of a RIU of a WLL system incorporating a modem function of the present invention for performing a digital interface, and includes an RF unit 21, a CDMA modem units 22-1 and 2, and a time switch 23-1, 2) Vocoders 24-1 and 2, codec units 25-1 and 2, slick units 26-1 and 2, line ports 27-1 and 2, control unit 28 and PSTN Modem 29, RS-232C buffer and mux 30-1, 2, data port 31-1, and DM port 31-2.

At this time, the PSTN modem 29 is composed of a PCM serial interface unit and a digital modem to control the PCM by digitally matching the digital data output from the RS-232C buffer and mux (30-1,2) Output to the RS-232C buffer and mux (30-1, 2) by PCM matching the digital data output from the time switch (23-1, 2) or the time switch (23-1, 2) according to the signal do.

FIG. 5 is a block diagram of a RIU of a WLL system incorporating a modem function according to another embodiment of the present invention, wherein the RF unit 41, the CDMA modem units 42-1 and 2, and the time switch 43-1, 2), DSP 44, codec sections 45-1, 2, slick sections 46-1, 2, line ports 47-1, 2, controller 48, RS-232C buffers and mux ( 49-1, 2, data port 50-1, and DM port 50-2.

In this case, the DSP 44 is provided in place of the vocoder, and performs the PCM serial interface and modem functions while additionally performing the functions of the vocoder.

That is, a program for vocoder and modem functions is stored in a memory in the controller 48, and during normal operation, a program required for a voice call such as a vocoder is downloaded and executed, and a modem algorithm is downloaded only when necessary. Perform modem functions.

The operation of the RIU of the WLL system with the modem function according to the present invention configured as described above will be described with reference to FIGS. 3 to 5 as follows.

First, the operation of the RIU performing the analog interface will be described with reference to FIG. 3. When the digital data is transmitted from the PC or the terminal 35 for data communication, the transmission data is RS via the data port 31-1. When output to the -232C buffer and the mux 30-1, the RS-232C buffer and the mux 30-1 is switched according to the control signal of the control unit 28 to transmit the transmission data in the voice band. When the data is transmitted to the modem for PSTN 29 and to be transmitted in the data band, the transmission data is directly transmitted to the control unit 28.

When the transmission data is transmitted to the control unit 28, the RP (through the corresponding path determined by the time switch 23-1, 2) passes through the CDMA modem unit 22-1, 2 and the RF unit 21 and the RP ( 900, and the transmission data is transmitted to the high-speed network dedicated data / internet server 300 along the IWF 700 path.

On the other hand, when transmission data is transmitted to the PSTN modem 29, the PSTN modem 29 converts the transmission digital data into an analog signal through the serial DAC / ADC to the muxes 32-1 and 2. The mux 32-1, 2 switches according to the control signal of the controller 28, and converts the PSTN modem 29 instead of the analog signal output from the slicks 26-1,2. Selects an analog signal and outputs it to the codec units 25-1 and 2.

Accordingly, the analog signals of the PSTN modem 29 output through the muxes 32-1 and 2 are codec units 25-1 and 2, vocoders 24-1 and 2, and time switches 23-. 1,2), the CDMA modem unit 22-1, 2, and then passes through the RF unit 21 is output to the RP (900), and eventually transmitted to the PSTN data / Internet server 200 of the PSTN (400) path do.

On the other hand, when the PC or terminal 35 receives the data of the high-speed network dedicated data / Internet server 300 of the IWF 700 path or the PSTN data / Internet server 200 of the PSTN 400 path, the received data is IWF. (700) In the case of data from the high-speed network dedicated data / internet server 300 of the path, the RF unit 21, the CDMA modem units 22-1 and 2, and the time switch 23-1, via the RP 900. 2) through the control unit 28, and then through the RS-232C buffer and mux 30-1,2 and the data port 31-1 operating in accordance with the control signal of the control unit 28 (PC or terminal ( 35).

When the received data is data from the PSTN data / Internet server 200 along the PSTN 400 path, the RF unit 21, the CDMA modem units 22-1, 2, and the time switch are passed through the RP 900. MUX 32-1, 2 passing through 23-1, 2, vocoder 24-1, 2, codec sections 25-1, 2, and then operating in accordance with a control signal from control unit 28; Received through the modem for the PSTN 29 through.

At this time, the modem for the PSTN 29 converts the analog signal output through the mux 32-1, 2 through the serial DAC / ADC to digital data.

Thereafter, the digital data passing through the modem for the PSTN 29 is transmitted to the PC through the RS-232C buffer and mux 30-1, 2 and the data port 31-1 operating according to the control signal of the controller 28. Receive at terminal 35.

Next, the operation of the RIU performing the digital interface will be described with reference to FIG. 4. When the digital data is transmitted from the PC or the terminal 35 for data communication, the transmission data is RS via the data port 31-1. When output to the -232C buffer and the mux 30-1, the RS-232C buffer and the mux 30-1 switch to operate according to the control signal of the control unit 28 to transmit the transmission data to the PSTN data / of the PSTN 400 path. When transmitting to the Internet server 200, the transmission data is transmitted to the PSTN modem 29, and when transmitting to the high-speed network dedicated data / Internet server 300 along the IWF 700 path, the transmission data is directly controlled. To send).

When the transmission data is transmitted to the control unit 28, the RP (through the corresponding path determined by the time switches 23-1 and 2) passes through the CDMA modem units 22-1 and 2 and the RF unit 21 to the RP ( 900, and the transmission data is transmitted to the high-speed network dedicated data / internet server 300 along the IWF 700 path.

On the other hand, when transmission data is transmitted to the PSTN modem 29, the PSTN modem 29 matches the transmission digital data by the PCM interface with the PCM interface, and outputs them to the time switches 23-1 and 2, Subsequently, the CDMA modem units 22-1 and 2 pass through the RF unit 21 and are output to the RP 900, thereby transmitting data to the PSTN data / Internet server 200 along the PSTN 400 path.

On the other hand, when the PC or terminal 35 receives the data of the high-speed network dedicated data / Internet server 300 of the IWF 700 path or the PSTN data / Internet server 200 of the PSTN 400 path, the received data is IWF. (700) In the case of data from the high-speed network dedicated data / internet server 300 of the path, the RF unit 21, the CDMA modem units 22-1 and 2, and the time switch 23-1, via the RP 900. 2) through the control unit 28, and then through the RS-232C buffer and mux 30-1, 2 and the data port 31-1 operating in accordance with the control signal of the control unit 28 (PC or terminal ( 35).

When the received data is data from the PSTN data / Internet server 200 along the PSTN 400 path, the RF unit 21, the CDMA modem units 22-1, 2, and the time switch are passed through the RP 900. (23-1, 2), and then received by the PSTN modem 29 operating in accordance with the control signal of the control unit 28.

At this time, the PSTN modem 29 matches the PCM digital data input through the time switches 23-1 and 2 by the PCM interface.

Thereafter, the digital data passing through the modem for the PSTN 29 is transmitted to the PC through the RS-232C buffer and mux 30-1, 2 and the data port 31-1 operating according to the control signal of the controller 28. Receive at terminal 35.

In operation of the RIU performing the digital interface, 56 Kbps between the PSTN 400 and the PC or terminal 35 may be omitted by omitting the procedure of converting digital data into an analog signal since the digital interface through the PSTN modem 29 is possible. Data service speeds are possible.

Finally, referring to FIG. 5, the operation of the RIU incorporating the DSP 44 will be described. When the digital data is transmitted from the PC or the terminal 53 for data communication, the transmission data is transmitted to the data port 50-1. When the RS-232C buffer and the mux 49-1 are outputted through the RS-232C buffer and the mux 49-1, the RS-232C buffer and the mux 49-1 switch according to the control signal of the controller 48 to transmit the transmission data to the PSTN 400 path. When transmitting to the PSTN data / internet server 200, the transmission data is transmitted to the DSP 44, and when transmitting to the high-speed network dedicated data / internet server 300 along the IWF 700 path, the transmission data is transmitted to the control unit 48. To send).

When the transmission data is transmitted to the control unit 48, the RP (through the corresponding path determined by the time switches 43-1 and 2) passes through the CDMA modem units 42-1 and 2 and the RF unit 41. 900, and the transmission data is transmitted to the high-speed network dedicated data / internet server 300 along the IWF 700 path.

On the other hand, when the transmission data is transmitted to the DSP 44, the PCM interface is matched with the PCM by the PCM interface according to the modem function built in the DSP 44, and the PCM interface is output to the time switches 43-1 and 2. Subsequently, the CDMA modem units 42-1 and 2 pass through the RF unit 41 and are output to the RP 900, thereby transmitting data to the PSTN data / Internet server 200 along the PSTN 400 path.

On the other hand, when the PC or terminal 53 receives the data of the high-speed network dedicated data / Internet server 300 of the IWF 700 path or the PSTN data / Internet server 200 of the PSTN 400 path, the received data is IWF. (700) In the case of data from the high-speed network dedicated data / internet server 300 of the path, the RF unit 41, the CDMA modem units 42-1 and 2, and the time switch 43-1, via the RP 900. 2) through the control unit 48, and then through the RS-232C buffer and mux 49-1, 2 and the data port 50-1 operating according to the control signal of the control unit 48 or a terminal ( 53).

If the received data is data from the PSTN data / Internet server 200 in the PSTN 400 path, the RF unit 41, the CDMA modem units 42-1, 2, and the time switch are passed through the RP 900. After passing through 43-1 and 2, the signal is received by the DSP 44 operating according to the control signal of the controller 48.

At this time, the DSP 44 PCM matches the digital data input through the time switches 43-1 and 2 by the PCM interface.

Thereafter, the digital data passing through the DSP 44 is transmitted to the PC or terminal through the RS-232C buffer and mux 49-1, 2 and the data port 50-1 operating according to the control signal of the controller 48. 53).

At this time, the DSP 44 performs a vocoder function during a voice call.

That is, the modem and vocoder functions are possible because the vocoder and the modem do not have to be performed simultaneously on one channel.

As described above, the present invention provides a simple configuration of the modem in the RIU of the WLL system or a DSP chip which performs modem functions while performing additional functions of the vocoder function. There is an effect that it is possible to reduce the cost of the signal by preventing the deterioration of the characteristics of the signal, and by eliminating unnecessary components.

In addition, the modem's digital interface enables 56Kbps data service rates between the PSTN and a PC or terminal.

Claims (3)

In a RIU in a WLL system that performs data service by interworking with a PSTN 400 connected to a WLL switch 600 or a high-speed data service network / Internet network 500 connected to an IWF 700, An RF unit 21 for converting an RF signal received from the RP 900 to an IF signal or an IF signal input from a subscriber to an RF signal, and a baseband signal for the IF signal converted from the RF unit 21. CDMA demodulation unit 22-1,2 for CDMA demodulation or input baseband signal to IF signal and outputting to the RF unit 21, and conversion in CDMA modem unit 22-1,2. A time switch 23-1 for switching the received baseband signal for each time slot to output the corresponding baseband signal for each time slot or for outputting to the CDMA modem units 22-1 and 2 of the corresponding path; 2) and 16Kbps data switched and output by the time switches 23-1 and 2 are demodulated to PCM data according to an ADPCM or LD-CELP compression algorithm, or modulated PCM data is inputted to 16Kbps data. Vocoders 24-1 and 2 output to 23-1 and 2, and the vocoder 24-1. Codec units 25-1 and 2 for converting the PCM data demodulated in (2) into analog signals or converting an input analog signal into PCM data and outputting them to the vocoders 24-1 and 2; The analog signal converted at (25-1, 2) is impedance-matched and output to the telephone 33 or fax 34 on the subscriber side through the line ports 27-1, 2, or the telephone 33 on the subscriber side or An analog signal input from the fax 34 through the line ports 27-1 and 2, and then the impedance matched and output to the codec units 25-1 and 2 to the codec units 25-1 and 2; , The modem 29 for the PSTN, RS-232C buffer and mux 30-1, 2 to output the data received in the RIU according to the corresponding path or to output the data input from the PC or the terminal 35 according to the corresponding path. ), The control unit 28 for controlling the mux 32-1, 2, and the digital data output from the PC or terminal 35 under the control of the control unit 28; Is inputted through the data port 31-1 and the DM port 31-2 to be selectively switched to the PSTN modem 29 or the control unit 28 for output or to be output from the PSTN modem 29 or the control unit 28. RS-232C buffers and muxes 30-1 and 2 for selectively switching the digital data to be output to the PC or the terminal 35 through the data port 31-1 and the DM port 31-2. DAC / ADC and digital modem to convert the digital data output from the RS-232C buffer and the mux (30-1,2) to an analog signal or to convert the digital data into an analog signal output through the mux (32-1,2) The PSTN modem 29 converts the data into the RS-232C buffer and the MUX 30-1, 2, and the codec unit 25-1, 2 according to the control signal of the control unit 28. Selectively switching the converted analog signal to the slick unit 26-1 or 2 or the modem for the PSTN 29 and outputting the signal, or in the slick unit 26-1 or 2 or the modem for the PSTN 29 Subscriber registration of a wireless subscriber network system with a modem function, characterized in that it comprises a mux (32-1, 2) for selectively switching the output analog signal to output to the codec unit (25-1, 2) Device. In a RIU in a WLL system that performs data service by interworking with a PSTN 400 connected to a WLL switch 600 or a high-speed data service network / Internet network 500 connected to an IWF 700, An RF unit 21 for converting an RF signal received from the RP 900 to an IF signal or an IF signal input from a subscriber to an RF signal, and a baseband signal for the IF signal converted from the RF unit 21. CDMA demodulation unit 22-1,2 for CDMA demodulation or input baseband signal to IF signal and outputting to the RF unit 21, and conversion in CDMA modem unit 22-1,2. A time switch 23-1 for switching the received baseband signal for each time slot to output the corresponding baseband signal for each time slot or for outputting to the CDMA modem units 22-1 and 2 of the corresponding path; 2) and 16Kbps data switched and output by the time switches 23-1 and 2 are demodulated to PCM data according to an ADPCM or LD-CELP compression algorithm, or modulated PCM data is inputted to 16Kbps data. Vocoders 24-1 and 2 output to 23-1 and 2, and the vocoder 24-1. Codec units 25-1 and 2 for converting the PCM data demodulated in (2) into analog signals or converting an input analog signal into PCM data and outputting them to the vocoders 24-1 and 2; The analog signal converted at (25-1, 2) is impedance-matched and output to the telephone 33 or fax 34 on the subscriber side through the line ports 27-1, 2, or the telephone 33 on the subscriber side or An analog signal input from the fax 34 through the line ports 27-1 and 2, and then the impedance matched and output to the codec units 25-1 and 2 to the codec units 25-1 and 2; , Modem 29 for PSTN, RS-232C buffer and mux 30-1, 2 to output data received in RIU according to the corresponding path or output data inputted from PC or terminal 35 according to the corresponding path. The control unit 28 for controlling the data, and digital data output from the PC or terminal 35 under the control of the control unit 28 Digitally output from the PSTN modem 29 or the control unit 28 by selectively switching to the PSTN modem 29 or the control unit 28 by inputting through the port 31-1 and the DM port 31-2. A PCM serial interface with RS-232C buffers and muxes 30-1 and 2 for selectively switching data and outputting the data to the PC or terminal 35 through the data port 31-1 and the DM port 31-2. PCM matching digital data output from the RS-232C buffer and the muxes 30-1, 2, and a digital modem, and the time switches 23-1, 2 according to the control signal of the controller 28. Or PSTN modem 29 for outputting to the RS-232C buffer and mux 30-1, 2 by matching the PCM digital data outputted from the time switch 23-1, 2 or Subscriber matching device for a wireless subscriber network system with a built-in modem function. In a RIU in a WLL system that performs data service by interworking with a PSTN 400 connected to a WLL switch 600 or a high-speed data service network / Internet network 500 connected to an IWF 700, An RF unit 41 for converting an RF signal received from the RP 900 to an IF signal or an IF signal input from the subscriber side to an RF signal, and a baseband signal for the IF signal converted from the RF unit 41. CDMA demodulation unit 42-1, 2 for CDMA demodulation or input baseband signal to IF signal and outputting to RF unit 41; and CDMA modem unit 42-1, 2 for conversion A time switch 43-1 for switching the received baseband signal for each time slot to output the corresponding baseband signal for each time slot or for outputting to the CDMA modem units 42-1 and 2 of the corresponding path; 2) and 16Kbps data switched and output by the time switches 43-1 and 2 are demodulated to PCM data according to an ADPCM or LD-CELP compression algorithm, or modulated PCM data is inputted to 16Kbps data. 43-1, 2) to perform the vocoder function, or DSP 44 for PCM matching the digital data between the time switches 43-1 and 2, the RS-232C buffer and the mux 49-1 and 2, and the PCM data demodulated by the DSP 44 as analog signals. Codec units 45-1 and 2 for converting the analog signal to be converted or input into PCM data and outputting the same to the DSP 44 and the analog signals converted by the codec units 45-1 and 2 are impedance matched. The analog signal inputted from the telephone line 51 or fax 52 at the subscriber side or input from the telephone line 51 or the fax 52 at the subscriber side through the line ports 47-1 and 2 is inputted to the line port 47-1. 2) and the slick units 46-1 and 2 for impedance matching and output to the codec units 45-1 and 2 and data received by the RIU according to a corresponding path, or a PC or the like. A control unit 48 for controlling the DSP 44 to output data input from the terminal 35 according to a corresponding path; and a control of the control unit 48 Accordingly, the digital data output from the PC or the terminal 53 is inputted through the data port 50-1 and the DM port 50-2 to be selectively switched to the DSP 44 or the control unit 48 for output or to the DSP 44 RS-232C buffer and mux 49 to selectively switch the digital data output from the control unit 48 and output the data to the PC or the terminal 53 through the data port 50-1 and the DM port 50-2. Subscriber registration device of a wireless subscriber network system with a modem function, characterized in that comprises a -1,2).