KR19990002953A - Modem setting method in telephone network matching device of large capacity communication processing system - Google Patents

Abstract

The present invention relates to a modem setting method in a telephone network matching device for a large capacity communication processing system.

The method of the present invention comprises the steps of: a) a subscriber hooks off, is connected to a counterpart exchange, dials, and the counterpart exchange requests a telephone matcher to a telephone network matching device; b) the telephone network matching device responds with a seer ACK if a scissor is required; c) processing signaling in an R2 MFC manner when a channel is connected by a scissors ACK; e) activating a ring detection signal for the modem to wake up the modem when the channel is determined by signaling; f) the telephone network matching device forwarding the ring back tone to the subscriber and detecting a hook off signal from the modem; g) returning the ring back tone and providing a communication path when a hook off signal is detected; h) the modem is hooked on when a call disconnection is requested from the subscriber side, and when the telephone network matching device recognizes the hook on, the modem disconnects the call path and returns the ring detection signal to high; i) When the call disconnection is requested from the telephone network matching device, the modem detects that the ring detection signal returns to high, cuts the communication path, and then provides a hook on signal, using the ring detection signal and the hook off signal. Modem setting is easy because the modem can be controlled.

Description

Method of establishing modems in the telephone network access subsystem of information communication processing system

The present invention relates to a telephone network matching device for a large capacity communication processing system, and more particularly, to a modem setting method in a telephone network matching device (TNAS) for establishing a communication path between a subscriber and a modem using the telephone network matching device. will be.

In general, a public telephone network is a communication network for transmitting voice signals to other subscribers in a network by performing circuit switching according to call requests of telephone subscribers, and a packet switching network is a communication network for transmitting digital data between computers through packet switching. Although these networks tend to be integrated with each other as the B-ISDN is promoted, they are still composed of individual networks, so the procedures for exchanging services between networks have been very complicated.

Almost all households and companies are subscribed to the public telephone network and are used most widely, but the service is mainly voice-based telephone service. However, as the information society progresses, data transmission between computers is widely required, and various information providers are on the rise and the demand for access to packet networks is rapidly increasing. Therefore, the type of service connected to the packet switching network has been increased by using the telephone line used in general homes, and for this purpose, an information communication processing system has been introduced into the connection between the public telephone network and the packet network.

In the conventional communication processing system, as the network evolves, a wide variety of networks, such as an ISDN network, a frame relay network, an ATM network, and the Internet, have been newly established. In order to connect them integrally and to further increase processing capacity, FIG. As shown, it has been improved with a large capacity communication processing system.

1 is a block diagram illustrating a general mass communication processing system, wherein the mass communication processing system 100 includes a telephone network matching device (TNAS) 110 for connecting to a public telephone network 101, an ISDN network 102, and the like. ISDN matching device (INAS: 130) for connection, packet network matching device (PNAS: 120) for connection with packet communication network 103, ATM network matching device (ANAS :) for connection with high speed (ATM) communication network 104 140), frame network matching device (FNAS: 150) for connection with frame relay network 105, internet matching device (KNAS: 160) for connection with internet 106, high speed switch for connecting each matching device with each other Module (HSSF: 170), unit system management device for network management (LOAMS: 180), etc. to connect subscribers (PC or hightel terminals) connected to public telephone networks or ISDN to information providers (IP) connected to other networks. give.

Referring to FIG. 1, a telephone network matching device (TNAS) 110 is a high speed switch module 170 for matching a trunk signal with a digital relay line (E1 or T1) of an electronic switchgear, a number system and a signaling method used in a telephone network. ) To connect subscribers connected to the public telephone network (101) to other subscribers such as the packet network (103) by performing the function of connecting the public telephone network (101), collecting statistics and delivering billing information about the user's service use It is a device that connects to the database of the information provider (IP) connected to the network. The conventional telephone network matching device is configured as shown in FIG. 2 so that one telephone network matching device can accommodate 96 channels, and one entire system can accommodate 10 telephone network matching devices to accommodate 960 channels in total. It is supposed to be.

2. Description of the Related Art A conventional telephone network matching device includes a trunk interface module (TNIF: 210), a subscriber modem connection (TDLA; 220, 221), a high data processing assembly (HDPA; 230, 231), as shown in FIG. , A text service processor assembly (TSPA; 250), and a high speed network adapter (HSNA; 241), the trunk interface module 210 includes a digital T1 trunk interface assembly (Extended T1 trunk Interface Assembly) / Extended CEPT trunk Interface Assembly: ETIA / ECIA; 211), Aggregation Board (T1 clock Generation switch Interface / CEPT clock Generation switch Interface Assembly: TGIA / CGIA; 212), Signal Processing Board (Text Signal Transition Assemply: STA; 213) Universal Signaling Transciever Assembly (USTA; 214), Telephone Network Processor Assembly (TNPA; 215), Alarm Access Control Assembly (AACA; 216) It is composed of a user connected to the telephone network of the large-capacity communication processing system and the information provider built in the packet network.

Referring to FIG. 2, the service processing unit (TSPA) 250 is duplexed into two boards, and the high speed switching interface unit HSNA 240 and 241 and the plurality of subscribers for interworking with the high speed switching fabric HSHS 170. It is responsible for controlling the modem connection unit (TDLA: 220, 221) and the data processing unit (HDPA: 230, 231). That is, the main functions of the service processing unit (TSPA) 250 provide a telephone network subscriber interface and management, data processing of subscribers and information providers, high speed switch interface (HSNA) interworking, and service control and self maintenance.

The signal of the public telephone network subscriber is designated by the trunk matching module (TNIF: 210), and is transmitted to the data processing unit (HDPA: 230, 231) at the RS-232C level through the corresponding modem of the subscriber modem connection (TDLA: 220, 221). In this case, one subscriber modem connection unit (TDLA) accommodates 16 channels, so two boards are connected to each other in order to process one subhighway (32 channels), and one board is connected to 32 channels for one data processing unit (HDPA). I can accept it. Therefore, six subscriber modem connections (TDLA) and three data processing units (HDPA) are required to process 96 channels (three subhighways).

The data processor (HDPA: 230, 231) transmits and receives data in units of 32 channels / PBA, and transmits X.3 parameters to the received data to the service processor (TSPA: 250) through the transmission and reception queues, which are determined in 132 byte units, respectively. do. The service processing unit (TSPA) 250 transmits packet related information to the high speed switch interface unit (HSNA: 240, 241), and the high speed switch interface unit (HSNA: 240, 241) transmits this data to the high speed switch module (HSSF: 170 of FIG. 1). Through the packet network matching device (PNAS: 120 of Figure 1) through.

Motorola's MC68030 / 50MHz is used as the main processor of the service processor (TSPA: 250) and Motorola's MC68360, an IPC (Inter Processor Communication) dedicated communication processor, is used for data communication with the data processor (HDPA: 230,231). Data is transmitted in an interrupt manner through 1M bytes of common memory. The data processor (HDPA: 230, 231) uses Motorola's MC68360 as the main processor and controls four slave processors. The main processor of the data processor (HDPA: 230, 231) transmits and receives data in 2 Mbps serial communication between the slave and the service processor (TSPA: 250).

In FIG. 2, the digital relay line matching board (ETIA / ECIA: 211) matches 4T1 or 3E1. When 4T1 is matched, the ETIA board is used and when the 3E1 is matched, the ECIA board is used. The aggregation board (TGIA / CGIA: 212)) receives the reference clock to generate the system clock, handles the subhighway switching function, and the signal service board (USTA: 214) is an R2 MFC and DTMF known as a standard for inter-station relay. It handles tones and performs services related to tones. The alarm access control unit (AACA: 216) collects hardware alarms, determines a status, reports the maintenance alarm, and performs a matching function with the maintenance processor. The telephone network matching processor (TNPA: 215) communicates with the service processor (TSPA) 250 and controls each device.

In Figure 2, the telephone network matching module (TNIF: 210) provides access to the public telephone network 101 through a PCM transmission line of 1.544 Mbps T1 or 2.048 Mbps E1, collects outgoing subscriber numbers by R2 MFC signaling, and subscriber information. Is transmitted to the service processing unit (TSPA) 250. When the reception of the service processing unit TSPA 250 is confirmed, the service processing unit TSPA is connected to the information provider IP connected to the packet network matching device 120 via the high speed switch module HSSF 170. That is, the telephone network matching device 200-1 to 200-10 connects modems in response to various modems of telephone subscribers, multiplexing function of digital data, communication protocol processing function, raw charging data collection function, Handle each of the subsystem maintenance itself.

In such a telephone network matching device, 16 modems are accommodated in one subscriber modem connection, and two subscriber modem connections handle one subhighway (32 channels). Thus, a modem can be woken up to establish a communication path. You need a procedure to set this up.

Accordingly, the present invention has been made in order to meet the above necessity, and an object of the present invention is to provide a method for setting a modem for data communication in a telephone network matching device of a mass communication processing system.

In order to achieve the above object, the method of the present invention provides a telephone network of a large-capacity communication processing system for establishing a communication path by connecting a subscriber subscribed to a public telephone network with a modem in a telephone network matching device through a counterpart belonging to a public telephone network. A matching device, comprising: a) the subscriber hooks off, is connected to a counterpart exchange, dials, and the counterpart exchange requests a telephone network matching device for a seer; b) when the scissor is requested in step a), the telephone network matching device responds with a seer ACK; c) processing signaling in an R2 MFC manner when a channel is connected by the scissors ACK; e) waking up the modem by activating a ring detection signal RING in the corresponding modem when the channel is determined by signaling; f) the telephone network matching device forwarding the ring back tone to the subscriber and detecting a hook off signal from the modem; g) returning the ring back tone and providing a communication path when a hook off signal is detected; h) when the call disconnection is requested from the subscriber side, the modem hooks on, and when the telephone network matching device recognizes the hook on, disconnects the call path and returns the ring detection signal RING to high; And i) if a call disconnection is requested from the telephone network matching device, the modem detects that the ring detection signal RING returns to high, cuts the communication path, and provides a hook on signal. It is done.

1 is a block diagram showing the overall configuration of a large capacity communication processing system;

2 is a block diagram showing a conventional telephone network matching device in a mass communication processing system;

3 is a block diagram showing a telephone network matching device to which the present invention is applied;

4 is a detailed block diagram of a subscriber modem access unit shown in FIG. 3;

5 is a flowchart illustrating a process of setting up a modem for communication according to the present invention.

* Explanation of symbols for main parts of the drawings

101: public telephone network (PSTN) 301: L-bus

302: S-bus 303: RS-232C

304: serial bus 305: VME bus

306a, 306b: TAXI bus 310: trunk interface (TNIA)

312: processor interface (TPIA) 314: subscriber modem connection (TDIA)

316: data processing unit (HDPA) 318: service processing unit (TSPA)

319a, 319b: high speed switch interface 401: buffer

402: codec 403: transmission amplifier (TX AMP)

404: RX AMP 405, 409 Buffer

406, 412, 413: latch 407, 408: timeslot allocation controller

420: modem chip 411: RS-232C interface

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

As shown in FIG. 3, the telephone network matching device to which the present invention is applied includes a trunk interface unit (TNIA; 310) that is directly connected to the public telephone network 101 and accommodates 4E1. Telephone Processing Interface Assembly (TPIA; 312), Subscriber Modem Interface (Text Data Interface Assembly: TDIA; 314), Highly Data Processing Assembly (HDPA: 316), Text Service Processor Assembly (TSPA; 318), High Speed Network Adapter (HSNA; 319a, 319b).

Comparing FIG. 3 with FIG. 2, it can be seen that the telephone network matching device to which the present invention is applied has a very compact structure. Here, since the subscriber modem connection unit 314 capable of accommodating 16 channels can process one subhighway (SHW: 32 channels) in two sets, 2x4 = 8 boards are required to process 4E1. The data processor 316 correspondingly requires four boards (32 channels / board). The service processor 318 is redundant to improve reliability, and the high speed switch interface units 319a and 319b may also be duplicated.

Referring to FIG. 3, a trunk interface unit (TNIA) 310 may be connected to a public telephone network 101 to accommodate 4E1, and switch four time slots SHW to the processor interface unit 312 by switching time slots. It performs the digital trunk interface (TLI) function and link signal matching (LSI) function. The trunk interface unit (TNIA: 310) is connected to the processor interface unit 312 through the L bus 301 and is controlled by the processor interface unit (TPIA: 312) using a public telephone network (PSTN: 101) using the CEPT method. It is matched with relay circuit between stations and transmits / receives signal information of relay line using tone and R2 signal system. At this time, the transmission speed of the CEPT method (E1) is 2.048Mbps, and the line code uses HDB3.

The trunk interface (TNIA: 310) also accepts R2 signals, provides a ring back tone, and incorporates a network synchronizer to synchronize the transmission bits of the trunk line. The 2.048 MHz clock extracted from is used, and the local clock generated by the network synchronization circuit of the trunk interface 310 is 16.384 MHz. That is, the trunk interface unit 310 is provided with a network synchronization circuit to generate 16.384 MHz synchronized with 2.048 MHz extracted from the trunk line, and then divides it and is required by the processor interface unit 312 and the subscriber modem connection unit 314. Various clocks (4M, 2M, 8KHz clock) are provided.

Looking at the transmission operation is performed through the trunk interface 310, four sub-highway (SHW0 to SHW3) data consisting of 32 time slots input from the digital switch of the processor interface (TPIA: 312) is the trunk interface unit Channel matching is performed at the digital switch MT8980 of step 310 and input to the CEPT framer. The CEPT framer of the trunk interface unit 310 formats the subhighway data (SHW Data) and the signal data (Signalling Data) to the CEPT format, and performs HDB3 line coding at the line interface unit and then converts the unipolar-bipolar (U / B) into Output to CEPT type PCM trunk line.

On the contrary, the reception process receives the CEPT format data from the PCM relay line, switches the time slots in the trunk interface 310 to access the subhighway data, and processes various alarms, error detection, and signaling. The frame synchronization (FS: 8KHz) clock and the 4MHz clock required are generated by the network synchronization circuit of the trunk interface 310.

Meanwhile, the link signaling matching (LSI) function of the trunk interface unit (TNIA) 310 is an R2 MFC signal transmission / reception and a tone supply function. When the trunk interface unit 310 receives a scissors request from the trunk line, the trunk interface unit 310 transmits the scissors request information to the processor interface unit TPIA: 312, and the processor interface unit TPIA: 312 receives the request from the trunk. The input data channel is connected to the R2 signal receiving processor of the trunk interface unit. The trunk interface unit (TNIA) 310 receives a signal input from the trunk line, translates the signal, and transmits the signal to the processor interface unit (TPIA: 312). The trunk interface unit (TNIA) 310 provides forward and backward signals required by the R2 signaling method. In addition, the trunk interface 310 performs a tone providing function. Since only a ring back tone is required due to system characteristics, the trunk interface unit 310 continuously allocates a tone channel.

The processor interface unit TPIA: 312 processes control processing through the L-bus 301 for various events generated by the trunk interface unit TNIA: 310 and the subscriber modem connection unit TDIA: 314. It has a function of collecting various alarms of a device. In addition, a call-related communication is performed through the S bus 302 with a service processor (TSPA) 318, which is a higher processor. The processor interface unit TPIA 312 employs a Motorola multi-protocol processor (MC68302 IMP) to reduce and simplify circuit, power, and component density. Motorola's MC68302 is a high-performance processor that has a variety of peripheral devices that require a control structure in the existing 68000 CPU, and basically provides various interfaces required by a conventional processor.

As shown in FIG. 4, the subscriber modem connection unit (TDIA: 314) includes a buffer 401, a codec (402), a transmit amplifier (TX AMP: 403), a receive amplifier (RX AMP: 404), and a modem unit ( 420, RS232C interface 411, latch 406 for latching control data, time slot assignment controllers 407 and 408, address buffer 409, board ID buffer 405, decoder 410, modem control data The modem unit 420 includes a modem chip 421, a ROM 422, a RAM 423, and a nonvolatile RAM 424. In addition, one subscriber modem connection unit 314 is provided with 16 codecs, 16 modems, and 16 RS-232C interface units to accommodate 16 channels, and two boards are combined to form one subhighway ( 32 channels). Eight boards are required to handle 4E1. The subscriber modem connection unit 314 is a text data line interface board for matching an information retrieval terminal connected to the public telephone network 101. The subscriber modem connection unit 314 is a subscriber unit and a data processing unit of the telephone network via the trunk interface unit TNIA 310. HDPA: 316). In addition, it provides a mode that can automatically detect the modulation method of the information search terminal. The board accommodates 16 channels, and is connected to the trunk interface 310 and the processor interface 312 through the L-bus 301. The subscriber modem access unit (TDIA: 314) modulates the digital data inputted from the data processing unit (HDPA: 316), filters the signal, and converts the digital data into a digital code signal by the PCM method to condense them into multiple communication paths. On the contrary, the PCM signal is demodulated and then transmitted to the data processing unit (HDPA) 316.

Referring to FIG. 3, the service processor TSPA 318 may include a high speed switch interface unit HSNA 319a and 319b and a data processor HDPA 316 for interworking with the high speed interconnect module HSSF 170 of FIG. 1. It is in charge of controlling function. The main functions of the service processing unit (TSPA) 318 provide the interface and management of subscribers of the telephone network, data processing of subscribers and information providers, interworking with the HSNA, and service control and self-maintenance functions.

The data processor (HDPA: 316) transmits and receives data in units of 32 channels / board, and assigns X.3 parameters to the received data and transmits them to the service processor (TSPA: 318) through the transmission and reception queues defined in units of 132 bytes. do. The service processing unit (TSPA) 318 transmits the packet related information to the high speed switch interface unit (HSNA: 319a, 319b) via the VME bus 305, and the high speed switch interface unit (HSNA: 319a, 319b) transmits this data. The high speed switch module (HSSF: 170 of FIG. 1) is transferred to the corresponding packet network matching device (PNAS: 120 of FIG. 1).

Motorola's MC68030 / 50MHz is used as the main processor of the service processor (TSPA: 318) and Motorola's MC68360, an IPC dedicated communication processor, is used for data communication with the data processor (HDPA: 316). Data is transmitted in an interrupt manner through 1M bytes of common memory. The data processor (HDPA: 316) uses Motorola's MC68360 / 25MHz as the main processor and controls four slave processors. The main processor of the data processor (HDPA: 316) transmits / receives data with the slave and the service processor (TSPA: 318) in 2 Mbps serial communication.

In FIG. 3, the trunk interface unit 310, the processor interface unit 312, and the subscriber modem connection unit 314 are connected by the L-bus 301, and the processor interface unit 312 and the service processor 318 are connected to each other. The bus 302 is connected, and the data processor 316 and the service processor 318 are connected to the serial bus 304. The service processing unit 318 and the high speed switch interface unit 319a and 319b are connected through the VME bus 305, and the subscriber modem connection unit 314 and the data processing unit 316 are connected to a plurality of RS-232Cs 303. The high speed switch interface units 319a and 319b are connected to the high speed switch module HSSF through the TAXI bus (100Mbps: 306a, 306b).

FIG. 4 is a detailed block diagram of the subscriber modem access unit shown in FIG. 3, and FIG. 5 is a flowchart illustrating a process of setting up a modem for communication according to the present invention.

Referring to FIG. 4, the subscriber modem access unit TDIA is divided into a path through which PCM data is transmitted through the subhighway SHW and a path through which control data is transmitted from the processor interface TPIA through the L-bus. In the drawing, one codec 402, one modem unit 420, and one RS232C interface unit 411 are shown in the drawing, but one subscriber modem connection unit (TDIA) includes 16 codecs, a modem unit, and an RS-. It is equipped with a 232C interface to accommodate 16 channels, and one subhighway (SHW) is processed through two subscriber modem connections.

The 32 subchannels SHW received from the trunk side via the buffer 401 carry 32 channels, and one of these timeslots is selected and decoded by the codec 402. The selected time slot is determined by the frame synchronization signal FS0 of the timeslot assignment controller (TSAC) 407. The analog voice band signal decoded by the codec 402 is amplified by the reception amplifier 404 and then input to the modem unit 420, and demodulated by the modem unit 420 and output as digital data. This digital data is output to the data processing unit HDPA as the received data RXD via the RS-232C matching unit 411.

On the contrary, the transmission digital data received from the data processing unit (HDPA) to the RS-232C matching unit 411 is input to the modem unit 420 through the transmission data TXD terminal, and the modem unit 420 receives the analog voice band signal. Is modulated by the transmit amplifier 403. The output of the transmit amplifier 403 is coded with PCM data in the codec 402 and output through the buffer 401. At this time, the transmission and reception PCM data has a rate of 8bit x 8KHz = 64 Kbit / s, and the voice band is usually 300Hz to 3400Hz. TXD, RXD, DTR, CTS, DCD signal lines are used for the RS-232C interface between the modem unit 420 and the data processing unit (HDPA), and the meanings of the signal lines are as already known.

On the other hand, when looking at the control data path of the processor interface and the subscriber modem connection transmitted / received through the L-bus, the processor interface reads the board ID after enabling the buffer 405 with the / SRD signal, and the processor reads the L. Writing a predetermined address and data on the bus causes the subscriber modem connection to latch it to latch 406 to use for timeslot assignment. The 8-bit control data latch 405 latches from the L-bus is CLK, DATA, CH0, CH1, CH2, CS0, CS1. CLK is a clock for transmitting 8-bit serial control data input through the DATA line, and CH0 to CH2 are control signals for selecting one channel among eight channels that can be allocated by the timeslot allocation controllers 407 and 408. , CS0 is a chip select signal for selecting the first timeslot allocation controller 407 in two timeslot allocation controllers used for 16 channels, and CS1 is for selecting the second timeslot allocation controller 408. Chip select signal.

Accordingly, the first timeslot allocation controller 407 and the second timeslot allocation controller 408 receive the control data and generate frame synchronization signals FS0 to FS15 for selecting 16 timeslots from FS0 to FS15. Provided by codec. The address decoder 410 is configured to receive control data for controlling the modem unit 420 through the latches 412 and 413 when a predetermined address is input. For example, when the predetermined data is output after writing the predetermined address, 16 modems are output. Among the modem chips, the ring detection signal RING D is provided to start the corresponding chip. When the data is read after outputting a predetermined address, the hook-off state of the 16 modem units is set to the processor interface unit TPIA. ) Reads.

As described above, the operation performed between the subscriber modem access unit (TDIA) and the processor interface unit (TPIA) through the L-bus accesses a specific board according to a predetermined address to write control data for time slot assignment or to read a board ID. The ring detection signal is written or the hook off signal is read.

Referring to Figure 5, during call setup, a communication path is established from a subscriber to a modem belonging to a subscriber modem connection via a counterpart switch belonging to a public telephone network and a local switch corresponding to a telephone network matching device.

When the subscriber hooks off for data communication in the idle state (IDLE), the counterpart exchange provides a dial tone to the subscriber side. Accordingly, the subscriber dials a predetermined telephone number. Digit (01410) to attempt to connect to the information provider. For example, dialing 1410, the subscriber is trying to connect to the hightel.

If dialing is made, the counterpart exchange requests a Seer to the local exchange, and if there is an empty channel, the local exchange will respond with a Seizer Ack. The counterpart exchange then transfers the digits to the forward according to the R2 method, and the home exchange transfers the digits to the backward. R2 signaling is then made in accordance with international standards.

After the digit exchange is performed, the local exchange queries the calling subscriber, and the counterpart exchange exchange provides the calling party information. The local exchange then processes the signaling and sends the ring detection signal RING low to the modem side to activate the specific modem via the L-bus. Subsequently, the local exchange provides Ring Back Tone to the subscriber, and the modem wakes up when the ring detection signal RING is low, waiting for transmission / reception, and then sets the hook off signal to L-. Deliver to local exchange via bus. As a result, the local exchange provides a communication path between the subscriber and the modem after recovering the ringback tone (RBT). When the communication path is established as described above, the communication protocol is matched and the data communication is performed between the modem of the subscriber and the modem of the telephone network matching device by the handshake method.

After the communication is completed, there are two ways in which the communication path is disconnected according to the side of starting the cut.

When the subscriber requests disconnect from the counterpart, the counterpart requests disconnect from the local exchange, and then receives a disconnect acknowledgment when a hook on is received from the modem. To pass on. As a result, the call path is disconnected, and the local exchange returns the ring detection signal RING to the modem.

If the local exchange requests Disconnect to the other exchange during a call, the other exchange sends a Disconnect ACK to the local exchange. Accordingly, the local exchange returns the ring detection signal RING to the modem to request the modem to disconnect. As a result, a truncation is made, and the modem transmits a hook on signal to the local exchange through the L-bus, and then maintains the idle state.

As described above, the telephone network matching device of the high-capacity communication processing system according to the present invention allows a plurality of modems to be woken up according to an efficient procedure to establish a call path. In particular, the modem can be controlled using the ring detection signal RING and the hook off signal, so the modem can be easily set.

Claims (1)

In the telephone network matching device of a large capacity communication processing system for establishing a communication path by a subscriber subscribed to a public telephone network connected to a modem in a telephone network matching device through a counterpart belonging to a public telephone network, a) the subscriber hooks off, is connected to the counterpart exchange, dials, and the counterpart exchange requests a telephone matcher to a telephone network matching device; b) when the scissor is requested in step a), the telephone network matching device responds with a seer ACK; c) processing signaling in an R2 MFC manner when a channel is connected by the scissors ACK; e) waking up the modem by activating a ring detection signal RING in the corresponding modem when the channel is determined by signaling; f) the telephone network matching device forwarding the ring back tone to the subscriber and detecting a hook off signal from the modem; g) returning the ring back tone and providing a communication path when a hook off signal is detected; h) when the call disconnection is requested from the subscriber side, the modem hooks on, and when the telephone network matching device recognizes the hook on, disconnects the call path and returns the ring detection signal RING to high; And i) when the call disconnection is requested from the telephone network matching device, the modem detects that the ring detection signal RING returns to high, cuts the communication path, and provides a hook on signal; A modem setting method in a telephone network matching device for a large capacity communication processing system.