KR930004924B1 - Metering method in electronic switching system - Google Patents

Abstract

The method for providing the inward wide area telephone service (WATS) to many subscribers is performed by: discriminating whether the call inputted at the service switching point (SSP) is an intelligent network service call or not using the information obtained from the user; transmitting the service information to the service control point (SCP) using the No.7 protocol of intelligent network; processing the service information between the SSP and the SCP executing the address translation; connecting the call to the user who admits the service use; requesting at a time for the lump sum of use expenses for a fixed time to the user.

Description

How to charge call service of electronic exchange system

1 is a block diagram showing a schematic structure of an electronic switching system service switch (SSP) to which the present invention is applied.

2 is a schematic diagram showing the structure of an SSP / SCP protocol stack for the present invention.

Figure 3 is a flow chart showing an embodiment of the process of the incoming billing service method according to the present invention.

The present invention relates to an incoming billing service method of an electronic switching system.

As the role of information and communication increased and the demands of users seeking various media, fast transmissions, and accurate transmissions away from simple voice-oriented communication of information, the function of the intelligent network to meet these needs was required.

In order to provide a variety of intelligent network services that can satisfy the needs of many subscribers, SSPs (Service Switching Points) are in charge of exchange functions to provide intelligent network services to the functions of electronic switchboards that process existing general calls. Addition of functionality is needed.

Accordingly, an object of the present invention is to provide a method for implementing an incoming billing service function by providing an SSP (Service Switching Point) in an electronic switching system.

In order to achieve the above object, the present invention provides a billing service method of an electronic switching system having a service switching means (SSP) and a service control means (SCP) for providing an intelligent network service switching function, Receiving billing service call recognition step of determining the call intelligent network service call entered into the service switch (SSP) using the information obtained through the interaction with the user (collecting the incoming billing number); The service exchanger (SSP) delivers information related to the service to the service controller (SCP) using the No. 7 protocol in the intelligent network, and the service controller (SCP) verifies it and performs a number translation between the SSP / SCP. Information processing step; And the service is connected to the user who is allowed to use the service, including the completion of the billing and billing service, the billing service for the incoming billing service billing the incoming billing number entered by the user, and collectively billing the amount used for a predetermined period It provides a method of billing service of incoming electronic switching system.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1 is a block diagram showing a schematic structure of an electronic switching system service exchange (SSP) to which the present invention is applied, and a new subsystem Application Service Element (ASE) for the electronic switching system to provide an intelligent network service switching function. and Transaction Capabilities Application Part (TCAP) Handling Subsystem) and ISS (Intelligent Network (IN) Service Subsystem). In general, the electronic switching system consists of three subsystems: an access switching subsystem (ASS), an interconnection subsystem (INS), and a central control subsystem (CCS).

The ASS performs a distributed call processing function, the INS performs a centralized call processing function part, and the CCS performs a centralization function of operation and maintenance.

Signaling Message Handling Subsystem (SMHS) performs Signaling Connection Control Part (SCCP) and Message Transfer Part (MTP) functions of Common Channel Signaling No. 7 (CCS7), and Line and Trunk Access Subsystem (LTAS) monitors subscribers and relay lines. Perform control, test and other functions.

T-switch is located in LSS (Local Switching Subsystem) and performs time slot connection function and data connection function to S-switch, and Signaling Service Subsystem (SSS) generates various tone signals and transmits them to the T-switch. It is responsible for the function, and the function of detecting the signal transmitted from the T-switch, Control Interworking Subsystem (CIS) performs a function for exchanging communication messages between processors.

The Access Switching Maintenance Subsystem (ASMS) collects all the errors in the ASS and reports them to a higher level. The Traffic Control Subsystem (TCS) controls all the actions of the entire call, that is, the establishment, monitoring, and disconnection of the call. It has a function to integrate.

The general process of processing is as follows. When a call request occurs from the subscriber and the relay line, the ASS detects it, performs the call service, and requests a translation of the number from the Interconnction Network Subsystem (INS). After translating the number, the called party's ASS performs the call service related to the incoming call. In the INS, the incoming and outgoing call is established through the search and connection. When the call is completed, the incoming and outgoing ASS returns the call data to the idle state and the originating ASS notifies the CSS of the billing data.

To provide intelligent network services, ASS adds new software subsystems, ATHS and IN Service Subsystem (ISS), which are responsible for intelligent network service exchange. ATHS is a subsystem that performs the CCS7 protocol function to communicate with SCP to process intelligent network service.It is a protocol that supports the interaction between ASEs for non-line related applications between exchanges and special centers in distributed environments within communication networks. It handles TCAP function and protocol ASE function of Layer 7 to perform specific intelligent network service as TC-user. The ISS is capable of recognizing the calls required by the user, the calls requiring the intelligent network services, the ability to handle specific intelligent network services, the billing processing functions associated with the intelligent network service calls, the traffic management and control functions, and the performance of the SSP functions. Perform overall maintenance, operation and management functions.

The ISS consists of five software blocks with shared functions to perform the functions of the ISS. The SCCB (Service Call Control Block) searches the trigger table when a call is requested to a user and a relay line, determines the call requiring the intelligent network service by the collected digits, and performs overall control of the ISS. Block) has a function of processing and providing prescribed intelligent network services such as an incoming billing service and a credit calling service, and includes a number of functional components (FCs) that perform specific functions for processing such services. Billing Measurement Block (BMB) creates an Automatic Message Accounting (AMA) record using billing information received from SCP when an intelligent network service call is completed, including information such as called / called number, billing number, and call time. TMB (Traffic Measurement Block) controls traffic by performing measurement and statistical functions related to intelligent network services, and performs automatic call blocking by request from SCP ISMB (IN Service Management Block) occurs within ISS It collects errors and reports high level. It is in charge of initialization and update of trigger table.

2 is a structural diagram of the SSP / SCP protocol, the SSP performs the CCS No.7 protocol function to connect to the intelligent network. An AP (Application Processor) is a service processing procedure in an exchange or network special facility that is generally performed according to a service request of a user and performs information processing for a specific application. ASE is defined as a unit function that executes application services (incoming billing, credit passing) in the network and is a protocol that supports functions for a specific service.

Therefore, for each service, a specific ASE having a unique communication function other than the TCAP (question processing function application unit) is required. TCAP is a protocol that supports the interaction between ASEs for non-line related applications (incoming billing, credit calls) between SSP and SCP. It is used as a common protocol regardless of the type of service. TCAP is a component sublayer and a transaction part. The component sublayer provides the ability to transfer components between specific ASEs, and the transaction sublayer provides a dialog for delivering transactional messages. SCCP (Signal Connection Controller) is a protocol that transmits information between signal points by using the service of low level protocol.It translates dialed digits into signal point code and sub system number for routing signal message. It provides management functions to control the availability of subsystems or ASEs. The MTR (message forwarding unit) is a lower level protocol which is subdivided into three levels. Level 1 provides the mechanical, electrical, functional, and procedural characteristics of the signal data link, and Level 2 provides the signaling functions and procedures for controlling the signaling link and the associated signaling messages over the signal data link. Level 3 provides signal message transfer between signal points and related signal network functions (signal message processing function, signal network management function) and procedures.

If a call is requested through an existing Public Switched Telephone Network (PSTM) network or an Integrated Services Digital Network (ISDN) network, and the class number or subscriber line is checked and analyzed, the call is requested. It collects the information needed by the SSP and forms a query to send the query to the SCP in order to obtain the call processing information for performing the intelligent network service. In this case, the query message is each of ASE, TCAP, SCCP, and MTP. Generated and delivered through protocol processing, SCP analyzes information such as billing, routing, and credit relationship using its own internal database and sends response message to SSP through protocol processing of ASE, TCAP, SCCP, MTP The SSP forwards this response message through MTP, SCCP, TCAP, and ASE protocol processing to obtain relevant information and to proceed with the call service.

3 is a flowchart in which an SSP processes an incoming billing service.

When a call is requested by a user (1), through a trigger table search (2), the call inputted to the service switch (SSP) is determined to be an intelligent network service call authorization (3). (4) In case of an intelligent network service call, the SCCB determines the type of service required (5) by the collected digits (6), and processes and provides an incoming billing service or a credit call service.

In the case of a credit call service, the service is provided by the credit call service processing process (7) .In the case of an incoming billing service call, the SAB sends a request to the ATHS for the SCP to request information about the service processing, and ATHS sends this message to the ASE, A query is made through the TCAP protocol process (8) and sent to the SCP via the CCS7 network (9).

SCP sends information about incoming billing service processing to SSP through CCS7 protocol processing, and ATHS processes response message and forwards it to SAB (10). If the response message received from the SCP (11) is a failure response message, the SAB transmits the announcement to the user (12), and if the response is a success response, sends the call forwarding number and sends a connection request (13) The connection notification is received (14) to complete the call and the billing measurement block (BMB) begins charging for the incoming billing service (15). When a call release request is received from the station (16), the call is released (17), and the BMB ends the charging process (18).

As described above, the present invention implements an SSP, which is an element of an intelligent network, in an electronic switch, thereby providing an incoming billing service to various subscribers.

Claims (1)

In the incoming billing service method of an electronic switching system provided with a service switching means (SSP) and a service control means (SCP) for providing an intelligent network service switching function, obtained through interaction with a user (collecting a chargeable billing number). An incoming billing service call recognition step of determining whether the call inputted to the service exchanger (SSP) is an intelligent network service call using information; The service exchanger (SSP) delivers information related to the service to the service controller (SCP) using the No. 7 protocol in the intelligent network, and the service controller (SCP) verifies it and performs a number translation between the SSP / SCP. Service information processing step; And performing the charging and receiving step of connecting the call to the user who is allowed to use the service, charging the incoming billing number entered by the user, and collectively billing the used amount for a predetermined period of time. The incoming billing service method of the electronic switching system characterized in that the.

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