KR19990051090A - Method of setting call channel of relay line channel and multi-modem channel of communication processing system and telephone network matching device - Google Patents

Abstract

The present invention relates to a method for establishing a call between a relay line channel and a multi-modem channel of a communication processing system. Currently, most PC communication users are connected to a subscriber of a telephone network by using a modem, which is an analog / digital signal conversion device. : 1 Connection type. Therefore, the present invention recognizes a telephone identification number (for example, 01410 or 01411) coming into the communication processing system through the output trunk of the switchboard, receives the channel number of the relay line, collects the calling number, and uses the currently used channel from the prepared multiple modem. In this case of 1: 1 connection type, relay line block which can occur due to breakdown of relay line or modem can't occur. Even if an error occurs, a communication channel can be formed independently.

Description

Method of setting call channel of relay line channel and multi-modem channel of communication processing system and telephone network matching device

The present invention relates to a method for establishing a call between a relay line channel and a multiple modem channel of a communication processing system.

The present invention is applied to the large-capacity communication processing system currently being developed, and relates to a method for establishing a smooth call between a relay line channel and a multiple modem channel provided by a 01410 or 01411 hightel service. The communication path setting process between the PC communication user and the information provider is first performed by the PC communication user using the telephone network and connected to the communication processing system connected to the trunk of the electronic switchboard by the trunk.In the telephone network matching device of the communication processing system, regardless of the relay line channel, Depending on the process, it interfaces with one of multiple modems.

Telephony Network Access Subsystem (TNAS) is composed of Pulse Code Modulation (PCM) trunk interworking unit, telephone network processor unit, multiple modem unit, multiple subscriber multiplexer, service control unit and high speed switch interworking unit. The subject includes everything related to the telephone call connection except for the high-speed switch interlock.

The conventional PC communication service is a service of a 1: 1 subscriber interworking method, and the line should be increased by the number of users increased when the system is expanded due to the increase of user usage. Therefore, when the system capacity is increased, the corresponding subscriber modem must be increased accordingly, and the system expansion cost is excessively increased. And in the 1: 1 connection method, if the channel is in use, it cannot accept the user's connection request.

An object of the present invention is to solve the connection inconvenience during 1: 1 communication, and to provide a multiple access method capable of real-time access to a PC communication subscriber. That is, in the communication processing system, the connection between the relay line channel and the multi-modem of the electronic switchboard coming in from the region closest to the subscriber of the PC communication is based on the link number of the relay line, not the linkage method according to the relay line designation channel. In the communication processing system, the physical channel of the multiple modems is checked to connect the inputted trunk line channel and the PC communication subscriber in the case of a free communication channel. In this way, it is possible to separate and manage the relay line channel and the multiple modem channel separately, so that some channel failure of the relay line or the error of the multiple modem channel can be configured so that it does not directly affect the communication failure such as 1: 1 communication method. It is done.

1 is a block diagram of a communication processing system to which the present invention is applied.

2 is a configuration diagram of a telephone network matching device applied to the present invention.

3 is a detailed block diagram of a telephone network matching and processing processor in accordance with the present invention.

4 is a flowchart of channel allocation operation in accordance with the present invention.

5 is a configuration of the relay line information according to the present invention.

6 is a normal call processing process according to the present invention.

* Description of the symbols for the main parts of the drawings *

101: mass communication processing system 102: information user

103: telephone network 105: packet network

104: ISDN 107: telephone network matching device

109: packet network matching device 108: ISDN matching device

114: information provider 111: high speed switch subsystem (HSSF)

112: operating network bonding device (ONAS) 113: local management equipment (LOMS)

201: Telephone network matching and processing processor unit (TNIA & TPIA)

202: multiple modem unit (TDLA) 203: multiplexer (HDPA)

204: telephone network service control unit (TSPA) 205: high speed switch adapter (HSNA)

301: trunk interlocking unit 302: R2MFC signal processing unit

303: network generator unit 304: telephone network processor unit

305: fault handling unit

In order to achieve the above object, a method for setting a call path between a relay line channel and a multiple modem channel of a communication processing system according to the present invention recognizes a telephone identification number (eg, 01410 or 01411) coming into a communication processing system through an output trunk of an exchange. After receiving the channel number of the relay line and collecting the calling number, it checks the currently used channel and the empty channel from the prepared multi-modem and sets the call only for the empty channel so that it is independent regardless of the fault of the relay line channel or the error of the multi-modem channel. It characterized in that the communication channel is formed.

In addition, the method for establishing a call path between a relay line channel and a multi-modem channel of the communication processing system according to the present invention recognizes a relay line input from a large switching center and occupies the relay line channel, and recognizes the channel of the R2MFC, which is a subscriber network signaling method, to determine an R2 channel. Occupying; Acquiring a called number necessary for recognition of a telephone network matching device and occupying a modem channel to promptly handle a subscriber connection; When the HOOK-OFF attempt of the modem channel is successfully performed, collecting a telephone number of the calling subscriber who attempted to access the telephone network call for charging at the end of the service; Releasing the R2 signaling scheme, detecting channel HOOK-OFF of the modem, and protocol negotiation with the subscriber modem to connect a call with one of a specific channel of the relay line and the multiple subscriber modem; Sending the information screen necessary for information retrieval to the designated subscriber modem and inducing the connection to the packet network or the Internet according to the subscriber's input data, the PC communication subscriber of the telephone network wants to provide communication service by accessing the telephone network matching device. In this case, the relay line information input from the exchange forms an independent channel and is connected to the multiple modem unit to use a database of information providers.

The telephone network matching device for establishing a call path between a relay line channel and a multiple modem channel of the communication processing system according to the present invention allows a direct connection to the R2MFC protocol through an electronic switch and a PCM link, detects a relay line channel, and detects one of the multiple modems. Telephony Network Interface Board Assembly & Telephony Processor Interface Board Assembly (TNIA & TPIA) and the trunk line channel reported from the Telephone Network Trunk Matching & Processor Unit (TNIA & TPIA) to control the formation of communication paths independently. A service control board (TSPA) for inspecting a communication modem channel in use and assigning a final communication channel, a high data processing board assembly (HDPA) for managing multiple modems, and a PC communication subscriber Multiple modems (TDLA: Telep) that negotiate the last connection with the modem hony Data Line interface board Assembly).

In the present invention, since the relay line channel coming from the exchange is not fixed and a plurality of channels are inputted, the primary line is stored without change, and the communication processing system calculates a physical link according to the input relay line number. In the communication processing system, the modem channel is selected according to a channel allocation algorithm of a modulo concept that can minimize interference with an adjacent channel by using an initial value or a channel number lastly connected.

1 shows a configuration of a communication processing system to which the present invention is applied. The communication processing system that provides the information retrieval service includes an information retrieval terminal connected to a telephone network, a comprehensive information communication network, or a dedicated packet subscriber network, and a packet network using the standard X.25 protocol or the Internet using the TCP / IP protocol. It acts as a gateway between providers.

When the information user 102 accesses the communication processing system through the telephone network 103, the packet network 105, or the ISDN 104 in order to use the information communication service, the telephone network matching device 107, the packet matching device, which is a subscriber matching device. 109 or the ISDN matching device 108 operates in synchronization with each network to perform a smooth call connection function. At this time, the telephone network matching device extracts the calling party number for the service call in the call connection process and treats it as the object of charge. The user connected to the telephone network matching device can selectively use the database of the information provider 114 connected to the packet network, and can access the Internet service. When the PC communication user wants to use the information communication service, the PC communication user is connected to the packet network and the Internet network through interworking with the High Speed Switching Fabric (HSSF) 111. The high speed switch subsystem is connected to various types of network matching modules constituting a communication network at high speed and provides an interworking function for transporting data traffic. Each subsystem in charge of the communication process is connected to a Local Operation and Management System (LOMS) 113 through an Operational Network Access Subsystem (ONAS) 112 and transmits user's billing information. Report function, configuration / failure / statistics information.

2 shows a detailed configuration of a telephone network matching device 107 to which the present invention is applied. The telephone network matching device includes a telephone network interface board assembly (TNIA) for physical connection with a PCM trunk, and a telephone network processing processor unit (TPIA) for managing trunk information and connecting to multiple modems. Tele-network trunk matching and processor unit (TNIA & TPIA) 201 consisting of a board assembly and a multi-modem unit (TDLA: Text-based Data Line interface board for transmitting bidirectional data through a connection with a subscriber modem of a plurality of channels that can communicate) Assembly (202), a Highly Data Processing Board Assembly (HDPA) 203 that performs seamless data multiplexing of connected subscriber data, and service control, communication processing, failure reporting and statistics of the telephone network matching device. In charge of interworking with HSSF, a telephone network service control unit (TSPA) that manages key functions such as data reporting. It consists of a high speed network adapter (HSNA: High Speed Network Adapter) (205). In the present invention, when the trunk information connected to the telephone exchange station is input, the telephone network matching unit 201-1 processes the network synchronization and the PCM form first, and immediately notifies the telephone network processing processor unit 201-2 to the telephone network service control unit. According to the processing result of 204, the available modem channel 202 is allocated, and then connected to the subscriber modem through the corresponding channel 203. Once the call connection with the telephone network matching device is successfully established, the data entered by the subscriber is transferred through the fast switch adapter 205. The multiple modem unit 202 is composed of a subscriber modem interface module that supports error correction functions such as K56flex, V.34, V.32bis, and V.42 / V.42bis that perform 56kbps connection. The multiple modem unit 202 and the multiplexer 203 of subscriber data can transmit carriers up to 115.2kbps through a serial communication line, and independently 8 channels per MC68360 processor through a CD-1865 of RS-232C level. It accommodates 32 channels per board. The multiplexer 203 of the subscriber data and the service controller 204 communicate on a serial bus up to 2Mbps. This is a bandwidth using the fact that data transmission of subscribers does not occur simultaneously in PC communication. The service control unit 204 interfaces with the high speed switch adapter 205 over a 100 Mbps TAXI serial bus. The telephone network service control unit 204 is connected to the telephone network matching device at a speed of 56 kbps at the same time so that the PC communication user can retrieve database information connected to the other network, and receives the information received from the network of the corresponding database. It performs a function to deliver to, and transfers the billing information, shape change information, failure information, etc. of the subscriber to the system management apparatus 113. The service control unit 204 operates a transmission / reception task on a real time operation system (RTOS) so that a plurality of subscribers of the telephone network can be smoothly supported, and provides resources required for communication of the telephone network matching device. Manage.

Figure 3 shows a detailed block diagram of the telephone network trunk matching and processor unit (TNIA & TPIA) 201 for the processing of signals coming from the telephone network. The configuration applied to the present invention includes a trunk interworking unit 301 for performing synchronization functions required for relay line matching when the occupancy of trunk information from a large switching center is initiated to the communication processing system, an R2MFC signal processing unit 302 required for call connection progress, and A network synchronizer generator 303 for reproducing a synchronized reference clock with another station through a relay line, a telephone network processor 304 for collecting and managing input relay line information, and directly initializing a modem channel, and detecting a function or board error And a failure processing unit 305 which reports to the service control unit. The trunk interworking unit 301 can be matched with an exchange that uses the E1 signal format, which is a standard European digital trunk system, and can be connected up to four at the same time, and performs functions necessary for digital signal processing, R2MFC, and modem matching. . The trunk interworking unit 301 transmits and receives a PCM signal by providing R2MFC and a tone function on three sub highways, and when a relay line fails, the telephone network processor immediately notifies the failure processing unit 305. The R2MFC signal processing unit 302 transmits and receives R2MFC, DTMF, and audible tone signals in PCM form. The network synchronizer generating unit 303 plays a role of a switch with the trunk interworking unit 301, the R2MFC signal processing unit 302, and a modem. The network synchronizer generator 303 uses a 2.048MHz, 8KHz flame synchronization in the case of the European signaling system as a network block for clocking the power exchanger. The telephone network processor 304 controls the functions necessary for matching the telephone network and is responsible for the call processing function of the telephone. In particular, the call control control information and the alert information from the failure processing unit 305 are exchanged in serial communication with the service control unit 205. The failure processing unit 305 detects a failure occurring in hardware and generates a failure data for the telephone network processor 304 to read.

4 illustrates a process in which the PC communication subscriber 102 of the telephone network is connected to the telephone network matching device 101 to receive a communication service. First, the trunk line information coming from the exchange is connected to the 2.048MHz sub highway. When the relay line information forms an independent channel and is connected to the multiple modem unit 203 to use the information provider's database, the trunk link unit is recognized after the relay line inputted from the power exchange is recognized by the telephone network matching device 101. In operation 301, the relay line channel is detected (402). When the channel of the R2MFC, which is the subscriber network signaling method, is recognized (403), the called number required for the recognition of the telephone network matching device is checked (404). If so far, the modem channel occupancy is immediately entered (405) to quickly handle subscriber access. In the present invention, the reason for the line processing with the subscriber modem is to shorten the connection time with the subscriber modem through internal processing while simultaneously connecting the high speed modem. Then, the channel information of the assigned modem is reported to the service control unit (406). If the HOOK-OFF attempt of the modem channel is successfully performed (407), the telephone network processor unit collects the telephone number of the calling subscriber who attempted to access the telephone network call. (408) to be used as data for billing at the end of the service. After that, the R2 signaling method is released, the telephone number of the calling subscriber is reported to the service controller, the channel HOOK-OFF of the modem is detected (409), and the protocol of negotiation with the subscriber modem is entered (410). If the connection is successful up to this point, the call connection with the specific channel of the relay line and one of the multiple subscriber modems is completed. The telephone network matching device transmits a guide screen for information retrieval to the designated subscriber modem (411) to induce a connection to the packet network or the Internet according to the subscriber's input data (412).

5 is a diagram illustrating a switching scheme between time slots and multiple modem channels of a relay line according to the present invention. The switch system used in the telephone network matching device is made through the digital time switch MT8980 in the telephone network processor unit 304 and is composed of 32 time slots 501. Accordingly, the telephone network matching device using the European PCM trunk can use the modulo concept channel allocation method because the number of channels of the incoming relay line and the number of channels 502 of the multiple modems match. Once the trunk line channel is occupied, try 1: 1 channel allocation and if the independent channel is successfully configured, use it as it is. If the modem channel is in use, follow the modulo-16 channel allocation algorithm. Allow the channel to be occupied. The channel assignment scheme of the modulo concept has less interference between channels than when adjacent communication paths are connected, and can be replaced without interruption of service even in the case of hardware failure that may occur during system operation.

6 shows a configuration diagram for transmission of relay line information applied to the present invention. Up to 128 bytes are used to transmit control information and subscriber data of the telephone network. The processing method according to the present invention starts when the information user 102 inputs 01410 or 01411 to request a call connection to the telephone network matching device (401). The telephone network processor 304 and the service controller 205 communicate in an HDLC-type frame. At this time, the flag indicating the start of communication was 0X5A, which is a code that does not appear well in general data communication, and the flag indicating the end, 0XA5, which is a code similar to the start flag. The telephone network processor 304 may check the message of the whole process related to call processing and analyze the contents through the relay line number, the R2 channel number, the modem channel number, and the like.

First, the normal call processing procedure applied to the present invention indicates that the relay line of [S: number] is occupied by the telephone network matching device to start the service (601). Then, the R2 channel according to the signaling method of [R2: number] is occupied (602), and the modem channel information of one of the relay line channel and the multiple modems is transmitted to the service control unit 205 according to the SendChSzRP [number, number] format. (603). If the normal channel allocation is successful, the telephone number of the calling subscriber is entered in the [number] data format (604), and the time when the channel of one of the multiple modems is hooked off according to the Early ODN HookOff [number, number] procedure (605). The types include ODN (number tracking status of the calling subscriber), CG_CAT (before completion of R2 signaling), and SIG_SUCC (after completion of R2 signaling). R2 Completed [number, number] indicates a relay line number and a modem channel number in which R2 signaling is normally performed (606). Send ChInfoTrans [number, number] conveys relay line information and modem channel information to the service control unit (607), and MODEMHOFF [number, number] indicates that the modem is normally hooked-off for the specified channel (608), and SvcStrtRP (OK [Number, number] indicates that all connections have been successful and have reached service ready state (609). When the PC communication subscriber receives the desired service and terminates, the TrRelReq (number, number) routine is called to recognize that the calling subscriber inputs the termination key and releases the corresponding relay line and the modem (610). The CgRelRP_IC (number, number) routine then releases the call of the calling subscriber connected to the switching center (611), and the TrRelRP (number, number) routine reports the disconnection of the communication modem to the service controller (612).

According to the present invention, when a PC communication user connected to a telephone network wants to use a database of information providers such as a packet network (dial-up connection) or the Internet (dial-up networking), an independent communication channel is simultaneously provided to a plurality of PC communication subscribers. Form and connect so that errors in the trunk or multiple modem channels do not interact with each other. In addition, the CEPT method, which is the standard PCM trunk interworking method of Europe, is adopted to increase the channel capacity per system by about 20% compared to the North American method. There is an effect that can provide.

Claims (6)

After recognizing the telephone identification number (for example, 01410 or 01411) coming into the communication processing system through the output trunk of the exchange, the channel number of the relay line is assigned and the calling number is collected. A method of setting a communication line between a relay line channel and a multiple modem channel of a communication processing system, characterized in that the communication channel is formed independently regardless of a failure of a relay line channel or an error of a multiple modem channel by setting a call only for an empty channel. Recognizing the relay line inputted from the power exchange, occupying the relay line channel, and recognizing the channel of the R2MFC, which is a subscriber network signaling method, and occupying the R2 channel; Acquiring a called number necessary for recognition of a telephone network matching device and occupying a modem channel to promptly handle a subscriber connection; When the HOOK-OFF attempt of the modem channel is successfully performed, collecting a telephone number of the calling subscriber who attempted to access the telephone network call for charging at the end of the service; Releasing the R2 signaling scheme, detecting channel HOOK-OFF of the modem, and protocol negotiation with the subscriber modem to connect a call with one of a specific channel of the relay line and the multiple subscriber modem; Sending a guide screen for information retrieval to a designated subscriber modem and inducing a connection to a packet network or the Internet according to the subscriber's input data, When a PC communication subscriber of a telephone network wants to provide a communication service by accessing a telephone network matching device, a communication process comprising a database of information providers connected to multiple modem units by forming an independent channel of relay line information input from an exchange. How to set up a call on a trunk line channel and multiple modem channels of a system. A telephone network matching device for setting a call path between a relay line channel and a multiple modem channel of a communication processing system, A telephone network trunk matching and processor unit (TNIA & TPIA) for directly connecting to the R2MFC protocol through an electronic switch and a PCM link, detecting a relay line channel, and controlling to form a communication path independently of one of the multiple modems; A service control unit (TSPA) for inspecting a trunk line channel reported from the telephone network trunk matching and processor unit (TNIA & TPIA) and an unusable communication channel and allocating a final communication channel; A subscriber data multiplexer (HDPA) for managing multiple modems; A telephone network matching device for establishing a call route between a relay line channel and a multiple modem channel of a communication processing system, characterized in that it comprises a multiple modem unit (TDLA) for finally negotiating a connection with a modem of a PC communication subscriber. The method of claim 3, wherein The telephone network trunk matching and processor unit (TNIA & TPIA), A trunk interlocking unit that performs a synchronization function necessary for relay line matching when the occupation of trunk information is started from the switching center to the communication processing system; An R2MFC signal processor required for call connection progress; A network synchronizer for reproducing a synchronized reference clock with another station through a relay line; A telephone network processor for collecting and managing input relay line information and directly initializing a modem channel; A telephone network matching device for setting a call path between a relay line channel and a multiple modem channel of a communication processing system, characterized in that it comprises a failure processing unit for detecting a function or a board error and reporting it to the service control unit. The method of claim 4, wherein The telephone network processor unit, Once the trunk line channel is occupied, try 1: 1 channel allocation and if the independent channel is successfully configured, use it as it is. If the modem channel is in use, follow the modulo-16 channel allocation algorithm. A telephone network matching device for setting a call path between a relay line channel and a multiple modem channel of a communication processing system, characterized in that the channel is occupied. The method of claim 3, wherein The service control unit, The relay line of the communication processing system, characterized in that the transmission / reception task is operated on a real time operation system so that multiple subscribers of the telephone network can be smoothly supported, and the resources required for communication of the telephone network matching device are managed. Telephone network matching device for setting up channel and multiple modem channel calls.