KR0139586B1 - Method for dealing with an intelligent service of local ssp using toll ssp - Google Patents

Abstract

The present invention relates to a call processing method that can provide an intelligent network service even at a single station exchange by using a relay dry electronic switch that processes an intelligent network service call, and provides a service by directly changing data without changing software. In order to improve and provide various services to users without being restricted by the network, a first step of determining a service call after outgoing / receiving a route routed through a number translation through its own looped trunk line; A second step of generating an inquiry to a service control system (SCP) after searching for information and performing service processing according to a service type in the case of an intelligent network service; And a third step of performing an intelligent network service call processing if the message from the service control system (SCP) is successful, and performing a new intelligent network service to multiple subscribers connected to the end-station through data change and relay line looping without hardware change. It can provide a variety of intelligent network services quickly and economically, and can be used for the gradual development to the next-generation intelligent network service switch (SSP) having a service independent structure.

Description

Intelligent Network Service Call Processing Method of Local SSP using Relay SSP

1 is an intelligent network service switch structure diagram,

2 is a diagram of an intelligent network service processing structure of a local SSP;

3 is a flowchart of processing an intelligent network service call through looping in a local SSP according to the present invention.

* Explanation of symbols for main parts of the drawings

10: central control subsystem 20: interconnection network subsystem

30: exchange subsystem

31: Application service element and question and answer processing function application unit execution subsystem

35: Intelligent Network Services Subsystem

The present invention relates to a call processing method for providing an intelligent network service, such as an incoming billing service, a credit call service, and an information charge receiving agency service, in a single station exchange using a relay electronic exchange that processes an intelligent network service call.

The conventional single station exchange processes only general calls and does not provide intelligent network services.

As the demand level of the communication user increases, the intelligent network that emerges to meet this demand is recognized as an intelligent network service call and performs a service switching function (SSP: Service Switching Point) and a centralized database system, a service control system (SCP). As a network based on Service Control Point, it uses common line signaling method No.7 protocol.

The intelligent network has an easy structure for the introduction of new services, and the types of the intelligent network services are increasing. Therefore, the function of exchanging intelligent network service calls to all electronic exchanges that process existing general calls in order to provide various intelligent network services. It is necessary to add the function of the service switch (SSP) in charge.

Accordingly, the present invention uses a relay service switch (TOLL SSP) that provides an incoming billing service, a credit call service, and an information charge storage service, and performs a LOCAL SSP through data change and relay line looping without changing hardware. The purpose of this service is to improve the quality of services by directly providing services in the service and to provide call processing methods that can provide various services to users without being constrained by the network.

In order to achieve the above object, the present invention is provided with an application service element for processing an intelligent network service, a question and answer processing function application unit performing subsystem (ATHS), and an intelligent network service subsystem (ISS), and have a call processing function and its own operation and maintenance number. A distributed plurality of exchange subsystems (ASS) that perform functions; A central control subsystem (CCS) that performs comprehensive operational and maintenance functions; And a network switching subsystem (INS) connecting the switching subsystems or between the switching subsystem and the central control bus system, the method comprising: self-looping a routed call through number translation; A first step of determining a service call after the outgoing / incoming process through the relay line; If the service call determination result is an intelligent network service, a second step of determining a requested service type by searching and comparing an intelligent network service number in a database in which intelligent network service related information is stored; If the service type determined in the second step is an incoming billing service, the incoming billing service processing process is performed, additional information necessary for the service processing is performed, the call is processed by the incoming billing service processing procedure, and the service is performed for the intelligent network service processing. Generating a query to the control system (SCP) and waiting for a query response to the service; If the service type determined in the second step is a credit call service, perform a credit call service processing process, collect additional information necessary for service processing, proceed with a call by a credit call service processing procedure, and process the service for intelligent network service processing. Generating a query to the control system (SCP) to wait for a query response to the service; If the service type determined in the second step is an information charge storage agent service, the information charge storage agent service processing process is performed, additional information necessary for the service processing is collected, the call is processed by the information charge storage agent service processing procedure, and the intelligent network Generating a query to the service control system (SCP) for service processing and waiting for a query response to a service; If the service type determined in the second step is other intelligent network service, the intelligent network service processing process is performed, additional information necessary for service processing is performed, the call is processed by the intelligent network service processing procedure, and the service control is performed for the intelligent network service processing. Generating a query to the system (SCP) to wait for a query response to the service; And a seventh step of determining the message type from the service control system (SCP) and, if successful, connecting the intelligent network service call to perform the intelligent network service call call.

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

Incoming billing service gives service subscriber a service identification number and a billing number, performs a qualification test on this number, connects the call to the called number, and transfers the call charge to the called party (service subscriber), not the calling party. It is a service that you charge.

The credit call service is a service that automatically assigns a service identification number, credit number, credit billing number and password to the subscriber and charges the call charge to the credit billing number designated by the service subscriber rather than the calling party when a service request occurs with the credit number. At this time, in order to protect the subscriber from the third party who knows the credit number of the service subscriber, the user requests a password every time the call is made and goes through the screening test.

The information charge storage service is a service that allows a public communication provider to give a service identification number and an information providing number to an information provider so that the service user can use the information of the information providing service and pay the information in return. The network operator is a service that charges and receives the information fee to the service user on behalf of the information provider, and then returns the difference to the information provider after deducting the call fee and a certain percentage of the fee.

1 is a new subsystem for performing an intelligent network service exchange function, an application service element and an answer processing function application unit performing subsystem (ATHS) 31, and an intelligent network service subsystem (ISS) 35. The overall structure diagram of the configured SSP.

The electronic switchboard basically has three subsystems: a central control subsystem (CCS) 10, a network subsystem (INS) 20, and a switching subsystem (ASS) 30.

CCS (10) is a subsystem that performs the overall operation and maintenance of the system and provides functions such as system level maintenance management, fault control management, diagnosis and fault handling functions, billing, measurement and statistics, operator matching, etc. Controls disk and magnetic tape devices, which are auxiliary storage devices.

INS 20 is located in the middle of the system and performs the function of connecting the ASS (30) to each other or between the ASS (30) and the CCS (10), using the space switch (S-switch) ASS (30) It configures a mutual call path or a path for supplying call announcement information or call mixing to subscribers.

ASS (30) is equipped with subscriber and trunk line interface, time switch (T-switch), various signaling devices, etc. to perform most call processing functions, self operation and maintenance functions, etc. The transmission medium with the INS 20 is an optical link, which is called a data link. In addition, it is equipped with a comprehensive information communication network digital subscriber interface, a No.7 signaling device, a packet handler function, a network interlocking device function, and an electronic switching system enables the exchange function in an integrated information communication network (ISDN). Do it. The original ASS 30 exists as one, but at the application stage ASS-S (subscriber), ASS-T (trunk), ASS-S / T (subscriber / trunk), ASS-7 (SS No. 7), ASS Required combinations such as -P (packets) may appear.

The newly added ATHS 31 is a subsystem that performs common line signaling (SS No. 7) protocol function for communicating with a Service Control Point (SCP) to process an intelligent network service, and an ISS (35) ) Performs the function of processing a specific intelligent network service, charging processing related to service call, traffic control management and service switchboard maintenance and operation management function.

The signaling message execution subsystem (SMHS) 32 performs a message transfer unit (MTP) function and a signal connection control unit (SCCP) function for delivering a signal unit in the common line signaling method (SS No. 7). The trunk access subsystem (LTAS) 33 mainly performs monitoring, control and test functions of subscriber and trunk line interfaces, and the control system is redundant by load balancing.

The signal service subsystem (SSS) 36 generates and transmits various tone signals to a time switch by generating a dual tone multi-frequency receiver (DTMFR), an R2 multi-frequency complemented (MFC), and a continuity check tone (CCT). Function, and the traffic control subsystem (TCS) 34 has the capability to control and oversee all performance of the entire process of the call, i.e., call establishment, call monitoring, and tearing down, and the telephone data network subsystem (TDIS) ( 37) performs the interworking function with the data call of the telephone switching network.

The central switching subsystem (CSS) 23 is a space switch in the time-space-time (TST) switch structure, and also controls the space switch connection, network synchronization function and data link function with the ASS (30) or CCS (10). This is included.

The network control subsystem (INCS) 21 performs search, connection, and disconnection control functions as a call of a time-space-time (T-S-T) switch, and also performs maintenance functions such as call tracking and passage establishment.

The number translation control subsystem (NTCS) 22 receives the number translation request from the ASS 30 and informs the processor of the number translation result, and performs a route control function for the network management function.

In addition, various errors collected in the exchange maintenance subsystem (ASMS) 38, the network maintenance subsystem (INMS) 24, the central control maintenance subsystem (CCMS) 13, and the like are operated by the CCS 10. And to maintenance control subsystem (OMCS) 12. This determines the class of error, generates an alarm, and sends an output message through the operator-machine communication subsystem (MMCS) 11.

2 is a diagram of an intelligent network service processing structure of a local SSP.

When the network service request is generated from the originating subscriber, the local SSP uses the subscriber / trunk switching subsystem (ASS-S / T) or the subscriber subsystem of the local SSP for the post-translation service code. (ASS-T) is broadcasted to its own looping relay line, and the subscriber's intelligent network service call request is received through the self-looping incoming line of the local SSP. The incoming call is normally processed by the intelligent network service incoming call processing of the local SSP. Calls routed to the service exchanger self routed to the Alto (R2) equipment occupancy and the Alto (R2) switch aisle connection in order to receive the digits and the necessary information from the incoming line of the time switch control in signaling control of the basic call processor. Requires switch control. The time switch control requires the time switch unit to connect a signal device and a time switch (T-switch), and requests the occupancy of Al2 (R2) equipment to the signal service unit (LUS). At this time, the signaling control is informed that the device is ready to receive digits. The Al2 (R2) signal is transmitted to the signal service unit (LUS) via the trunk unit and the time switch. The transmitted alto (R2) signal detects a digit in the signal service unit (LSU) and transmits the digit to the number receiver. The number receiver recognizes the intelligent network service and requests additional information necessary for signaling control to perform processing corresponding to an incoming billing service, a credit call service, and an information charge storage service. After collecting all the digits and the necessary information, the intelligent network service control unit notifies the intelligent network service (incoming billing service, credit call service, information charge service, etc.). The intelligent network service control unit requests information such as calling number and calling grade to the basic call processing unit and receives the information.

The basic call processing unit of the ASS notifies the incoming call state to the intelligent network service control unit and the calling party (B7), and requests Alto (R2) path disconnection and call connection. The application process of the intelligent network service controller analyzes the intelligent network service call using various trigger tables to identify and determine the service, and checks the validity of the service request and whether the service is provided. The information is delivered to the application service element that processes each intelligent network service to perform routing information translation.

The application service element generates an operation with the information received from the application process, constructs a component for it, and delivers it to the question and answer function application unit (TCAP). The question and answer function application unit (TCAP) constructs a question and answer function application unit (TCAP) message using information received from the application service element of each service and delivers the message to the common line signal processor of ASS-7. At this time, the signaling data link between the service exchanger and the service control system receives the time switch control of the basic call processing unit by the request of the message transfer unit and establishes a failed-up path in the form of a time switch-space switch-time switch (TST). I use it. In addition, the result is received from the service control system and transmits a TCAP message to the intelligent network service control unit.

It checks the error and transaction status of the TCAP message received from the service control system, configures the component, and delivers it to the application service element. The application service element performs the decryption function on the parameter of the component received from the question-and-answer function application unit (TCAP) with reference to the operation and error definition, and delivers the decrypted information to the application process.

The application process analyzes the information received from the application service elements and requests the intelligent network service call connection to the basic call processor if the intelligent network service can be provided.

It is necessary to send the announcement by using the information received from the basic call processing unit. The announcement is sent to the calling subscriber by sending the announcement connection request to the common service unit (GSU) of the subscriber / trunk switching subsystem (ASS-S / T). Process to be sent out.

The base call processing unit in the switching subsystem (ASS) receives the actual called number and requests the number translation and route translation to the number translation and routing control unit in the interconnect network subsystem (INS). Number translation is performed in the interconnection network subsystem (INS), and the switching subsystem (ASS) is notified of the result of the number translation and called by the called party. Then, the space path in the interconnect network subsystem INS is used to form a call path.

A ring back tone connection is required to the calling party and a ring is connected to the called party. The called party receives the response notification, notifies the calling party of this fact, and informs the intelligent network service controller of the incoming response notification. When the called party recognizes the omni-directional recovery signal during the intelligent network service call, it sends a trunk line omni-directional cut request to the basic call processing unit of the switching subsystem (ASS). The busy tone is sent to the calling party, and the basic call processing unit of the switching subsystem (ASS) requests the intelligent network service release to the intelligent network service controller. The space switch and the time switch to the calling party call are disconnected and the calling party disconnect notification is sent to the basic call processing unit of the called party exchange subsystem (ASS) and the execution is terminated.

The basic call processing unit of the called party exchange subsystem (ASS) also disconnects the time switch, and the intelligent network service control unit sends the charging information to the central control subsystem (CCS) for billing processing.

FIG. 3 is a flowchart of processing an intelligent network service call in a local SSP by recognizing an intelligent network call using a trunk of its own looped route and performing call processing. .

If the hook-off of the subscriber is detected (41, 42), the calling signal device is allocated (43) to perform a call transmission process. The digit is collected by assigning 43 the calling party signaling device (44). Outgoing call processing 46 is performed by performing number translation and routing 45 using the collected digits.

At this time, if the required call is an intelligent network call, the own routed relay line is occupied (47) and looped (48) to its system to perform incoming call processing (49), and in case of general call processing according to the general call processing procedure. Handles general calls. Additional digits for intelligent network service processing are collected through self routed relay line 50 and call type 51 is determined.

If the type of call is a general call, the general call processing process 52 is performed and the call is terminated (53). In the case of an intelligent network service call, a type of intelligent network service is determined by using an intelligent network service number in a database where intelligent network service related information is stored (54). do.

If the service type is a billing service, the call handling service processing process 56 is performed, and additional information necessary for processing the service is collected (57) and the call is processed by the billing service processing procedure. In order to process the intelligent network service, a query is issued to SCP and waits for a query response.

If the service type is a credit call service, the credit call service process 58 is performed, and additional information necessary for processing the service is collected 59 to proceed with the call by the credit call service process. In order to process the intelligent network service, a query is issued to SCP and waits for a query response.

If the service type is the information fee storage agent service, the information charge storage agent service processing process 60 is performed, and additional information necessary for the service processing is collected (61) and the call proceeds by the information charge storage agent service processing procedure. In order to process the intelligent network service, a query is issued to SCP and waits for a query response.

If the service type is another intelligent network service, the intelligent network service processing process 62 is performed, and additional information necessary for processing the service is collected 63 to proceed with the call by the intelligent network service processing procedure. In order to process the intelligent network service, a query is issued to SCP and waits for a query response.

It determines the type of question and answer message from the SCP (64), and if the message fails, transmits the announcement (65) that cannot be processed normally, and terminates the call (66) through the hook on (H / on) of the calling line.

If the message type determination result message from the SCP is successful, the intelligent network service call is connected (67) through the intelligent network service call connection process. When the call 68 of the intelligent network service call is completed, charging processing for the call is completed and the call is terminated (69).

In order to provide users with various newly required intelligent network services, the intelligent network service exchanger is localized to quickly provide the requested services. By implementing the service exchanger in the above manner in the local SSP, intelligent network service recognition, service call processing, operation management and maintenance can be performed, and various kinds of voice guidance functions and additional information collection capabilities are provided. Allocate signaling equipment to perform call processing to provide intelligent network services.

As described above, the present invention implements the function of the intelligent network service exchange (SSP), which is an element of the intelligent network, in a single station exchange to change data and change the charge billing service, credit call service, and information storage service without changing hardware. With trunk line looping, it is possible to provide new services to multiple subscribers connected to single-station exchanges, and to develop new and required intelligent network services quickly and economically based on accumulated technology and experience, and next-generation intelligent network with service independent structure. There is an effect that can be used for the phased development to the SSP.

Claims (3)

Application service element and Q & A processing function for processing the intelligent network service The application part performing subsystem (ATHS) 31 and the intelligent network service subsystem (ISS) 35 are provided to perform call processing function and self operation and maintenance function. Distributed multiple exchange subsystems (ASS) 30; A central control subsystem (CCS) 10 for performing overall operational and maintenance functions; And a network subsystem (INS) 20 which interconnects the switching subsystem 30 with each other or between the switching subsystem 30 and the central control subsystem. A first step (41 to 51) of determining a service call after the outgoing / incoming process of the call routed through the self-looped relay line; If the service call determination result is an intelligent network service, a second step (54, 55) of retrieving and comparing the intelligent network service number from a database storing the intelligent network service related information to determine the required service type; If the service type determined in the second step is an incoming billing service, the incoming billing service processing process is performed, additional information necessary for the service processing is performed, the call is processed by the incoming billing service processing procedure, and the service is performed for the intelligent network service processing. Generating a query to the control system (SCP) to wait for a query response to the service (56, 57); If the service type determined in the second step is a credit call service, perform a credit call service processing process, collect additional information necessary for service processing, proceed with a call by a credit call service processing procedure, and process the service for intelligent network service processing. A fourth step (58, 59) of generating a query to the control system (SCP) to wait for a query response to the service; If the service type determined in the second step is an information charge storage agent service, the information charge storage agent service processing process is performed, and additional information necessary for the service processing is performed to proceed with a call by the information charge storage agent service processing procedure and the intelligent network. A fifth step (60, 61) of generating a query to the service control system (SCP) for service processing and waiting for a query response to a service; If the service type determined in the second step is other intelligent network service, the intelligent network service processing process is performed, additional information necessary for service processing is performed, the call is processed by the intelligent network service processing procedure, and the service control is performed for the intelligent network service processing. A sixth step (62, 63) of generating a query to the system (SCP) to wait for a query response to the service; And a seventh step (64 to 69) of determining a message type from the service control system (SCP) and, if successful, connecting an intelligent network service call to perform an intelligent network service call call. An intelligent network service call processing method of a local SSP. The method as claimed in claim 1, wherein the first steps 41 to 51 are performed by the eighth step 41 of allocating a calling signal device to perform a call when the hook off of the subscriber is detected. 42, 43); A ninth step (44, 45, 46) of performing outgoing calls by performing number translation and routing according to the collected digits after performing the eighth step (41, 42, 43); After performing the ninth step (44, 45, 46), the tenth step (47, 48, 49) is looped into its own system to occupy its own routed relay line only if the requested call is an intelligent network call (47, 48, 49) ); And an eleventh step (50, 51) of collecting additional digits for intelligent network service processing through a route routed to itself and determining a call type (Toll SSP). Intelligent Network Service Call Processing Method of Local SSP. 3. The method of claim 2, wherein the seventh step (64 to 69) comprises: a twelfth step (64) of determining a type of query response message from the service control system (SCP); After performing the twelfth step (64), if the message fails, the thirteenth step (65, 66) of transmitting a normal broadcast impossible announcement and ending the call through hook-on (H / on) of the call line; And after performing the twelfth step 64, if the Q & A message from the service control system (SCP) is successful, connects to the intelligent network service call, and if the call of the intelligent network service call is completed, charges the call and makes a call. An intelligent network service call processing method of a local SSP using a Toll SSP, comprising a fourteenth step (67, 68, 69) of terminating.