KR100271301B1 - A method of cotroling free phone services for service switching systems having intellingent peripheral functions - Google Patents

Abstract

The present invention relates to a method of controlling a free phone service in an intelligent peripheral built-in service exchange.

In the present invention, a service access number and a free phone (FP) number input by a predetermined caller are transmitted to a service controller through a first terminal exchange and an IP embedded service exchange, and the service controller performs an IP function with the IP embedded service exchange. In the requesting step, the IP embedded service exchange activates a predetermined built-in IP function, sends a message that the IP function is ready to receive a command from the service controller, and the service controller prompts the IP function to collect necessary subscriber identification information. Sending a response message, the IP function unit sends a response message for establishing a bearer channel to the first end-station, the caller inputs subscriber identification information, and the service controller inputs and analyzes subscriber identification information analyzing the information, and the caller. And a bearer channel is established between the called party and the called party It performed a step.

By using the present invention, the pre-phone service in the IP embedded service exchange eliminates the need for message exchange for bearer channel establishment or release between the service exchanger and the intelligent information providing system. There is an effect that can provide a service.

Description

A method of controling free phone services for service switching systems having Intelligent Peripheral functions

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling pre-phone services in an electronic switchgear. In particular, when an electronic switchgear serving as a service exchanger includes an intelligent peripheral system (IP), a free phone is provided. Phone) service, that is, a method for controlling pre-phone service in an intelligent information providing system built-in service exchange.

The development of software and computer technology, especially real-time data processing technology and its integration into communication networks, has enabled highly intelligent processing in communication networks. In addition, an intelligent network was created on the basis of efforts to establish a system that can provide high quality small quantity and various kinds of services economically and quickly in order to secure competitiveness in a new environment such as open communication and competition.

One of the reasons for the intelligent network technology is the convergence of all land, mobile and satellite communications, which are attracting attention as future communication services, and each user is a high-bandwidth individual who can receive not only voice but also multimedia services in his or her personal number. The intelligent network technology is suitable for service control of telecommunication systems, and both ITU-T's Universal Personal Telecommunications (UPT), ITU-R's Future Public Land Mobile Telecommunication System (FPLMTS), and ETSI's Universal Mobile Telecommunication System (UMTS) standardization The concept of intelligent network is applied.

However, early intelligent network structures had limitations that could not quickly and quickly provide various types of orders at low cost. The main reason is that the network structure is not clearly divided into service dependent and service independent parts.

In other words, although it adopts a structure that separates Service Switching Function (SSF) and Service Control Function (SCF), the service logic and its functions are implemented very closely at the exchange. Application service element (ASE) and service logic program (SLP), which are upper protocols of pre-signaling, are different for each service.

Therefore, when adding and changing services, it is necessary to change the corresponding software of both Service Switching Point (SSP) and Service Control Point (SCP), and it takes some time. Because it has a service management system, the service operation and management is complicated.

Proposed to solve this problem is the Advanced Intelligent Network (AIN), the service realization in the advanced intelligent network is a new combination of only the service independent block (SIB) componentized by functional elements on the service platform The service can be created and the development period can be shortened by the introduction of the service development environment.

1 is a physical configuration diagram of an advanced intelligent network, which includes a service switch 110 (SSP), a service controller 140 (SCP), an intelligent information providing system 120: IP, an accessory system 160: AD, and a service data system 150. : SDP) and single station exchanger (130,135).

At this time, the service switch 110 analyzes and examines a call requesting a service from a subscriber of an existing telephone network and requests the service controller 140 for call control information necessary for processing an intelligent network service. . In addition, the service switch 110 is an electronic switch that performs a call service desired by a subscriber using information sent from the service controller 140, and serves as a gateway for interconnecting an existing telephone network and an intelligent network. do.

The service exchanger 110 should have various kinds of voice guidance functions and digital information collection capabilities for efficient intelligent network service execution, and MTP (Message) of CCS7 signaling method that can process the protocol of the signaling network for communication with the intelligent network. Processing capabilities such as Transfer Part (SCCP), Signaling Connection Control Part (SCCP), and Transaction Capabilities Application Part (TCAP) are required.

On the other hand, the service controller 140 is an essential element for the intelligent network service, when receiving a query for the intelligent network service call from the database system having the service control logic and subscriber data, by providing information for call processing, the service exchanger 110 allows the service to be completed. The service controller 140 should be able to process a large amount of transactions online in real time, and should have a structure that can easily add and change services.

The intelligent information providing system 120 is connected to the service switchboard 110 via a circuit or packet switching network, such as ISDN, and is connected to one or several service switchboards. The function of the intelligent information providing system 120 is largely divided into voice service and data service. Voice service includes voice guidance, voice synthesis, voice recognition and voice database information, and Audiotex, Voicemail, Voice message, and Advanced Freephone. It can be used for services. Data services include protocol conversion and connection to data networks, and various services will be added in the future.

The accessory system 160 is a component of an intelligent network having a function similar to that of the service controller 140. The accessory system 160 is functionally identical to the service controller 140, but the accessory system 160 and the service switch 110 support the high speed interface. Therefore, the service controller 140 has different characteristics. Whereas the service controller 140 focuses on network routing services such as free phones or credit calling, the accessory system 160 is suitable for transaction intensive services that require high performance, and one or more service exchangers 110 It can be connected with.

The service data system 150 has data for providing an intelligent network service, and the data can be accessed by the service controller 140 directly or via a signaling network.

This advanced intelligent network (AIN) is called toll service. It will provide services such as credit call service, information charge agency service, virtual private network service, personal number service and telephone voting / polling service.

2 is a structural diagram of a general service switch 110 (electronic switch), the service switch 110 is composed of a plurality of access switching subsystem (ASS), Interconnection Network Subsystem (INS), and Central Control Subsystem (CCS), It is connected to each access network through corresponding ASS.

ASS is equipped with subscriber and trunk line interface, T-switch, optical subscriber interface, various signaling devices, packet handler, etc. to perform most call processing functions and self operation and maintenance functions.

These ASSs are ASS-S (Subscriber), ASS-T (Trunk), ASS-S / T (Subscriber / Trunk), ASS-7 (No.7), ASS-P (Packet), ASS-I (ISDN), ASS-F (optical subscriber access device), ASS-W (mobile subscriber access device) and the like.

On the other hand, the INS 112 is located in the center of the service exchange 110 to perform the function of connecting the ASS between each other, or between the ASS and CCS 113, by connecting the INS 112 and the ASS in a point-to-point The master communicates between the INS 112 and each ASS over a data link. In addition, it performs centralized functions such as space switch connection among call processing functions, and is also responsible for generating / distributing a system clock by providing a network synchronizer.

In addition, the CCS 113 performs the overall operation and maintenance functions of the service exchanger 110. In addition to the system-level operation and maintenance, management and statistical functions, the CCS 113 controls, manages, and manages mass storage media (MT, disk). It performs various input / output control functions with and interworking with other systems.

3 is a control flowchart of a pre-phone service in the service switcher 110 having the independent intelligent information providing system 120. After the caller 310 connected to the first end switch 130 requests the intelligent network service. The control sequence until the call is initiated with the called party 320 connected to the second end switch 135 is shown.

Initially, the caller 310 connected to the first terminal exchange 130 inputs a service access code (SAC) and a free phone (FP) number to request an intelligent network service, thereby providing an intelligent network service. To start.

The service access number and the free phone number input from the caller 310 are transmitted to the first terminal exchange 130, and the first terminal exchange 130 transfers the service access number and the free phone number to the service exchange 110 again. Do it.

The service exchanger 110 receiving the service access number and the free phone number detects the intelligent network service request for the call and sends a message (Initial Detection Point) informing the service controller 140 of the call. The service controller 140 receives the message and sends a message (Establish Temporary Connection) to the service switcher 110 to establish a bearer channel with the intelligent information providing system 120.

The service exchanger 110, which is requested to bearer channel connection with the intelligent information providing system 120, sends an initial address message (IAM) including a service access number and a free phone number to the intelligent information providing system 120. In addition, the intelligent information providing system 120 sends an acknowledgment message (ACM: Address Complete Message) indicating that the service access number and the free phone number have been received.

The intelligent information providing system 120 sends an ACM message to the service switchboard 110, establishes a bearer channel with the service switchboard 110, and indicates that the message is ready to receive a command from the service controller 140 (Assist Request). Send Instruction).

Then, the service controller 140 sends a command message (Prompt & Collect User Information) to collect the necessary information from the caller 310 to the intelligent information providing system 120.

The intelligent information providing system 120 receiving the information gathering command for the caller 310 sends an answer message (ANM: Answer Message) for establishing a bearer channel between itself and the caller 310 to the first end-station 130. send. As a result, a bearer channel is established between the caller 310 and the intelligent information providing system 120. In this case, the bearer channel refers to a PCM channel of 64 Kbps for receiving a caller's voice or a dual tone multifrequency signaling (DTMF) digit.

After the bearer channel is established, the intelligent information providing system 120 sends an announce message to the caller 310 to input a personal identification number (PIN). One example is the message "Please enter subscriber identification number." Then, the caller 310 listening to the guide message inputs his subscriber identification number.

Receiving the subscriber identification number of the caller 310, the intelligent information providing system 120 sends a command message (Collect User Information) to examine the subscriber information for the received voice to the service controller 140.

Then, the service controller 140 examines the subscriber information that it has, and then the service exchanger 110 instructs the service switch 110 to release the bearer channel between the service exchanger 110 and the intelligent information providing system 120 set above. Disconnect Forward Connection).

The service exchanger 110 receiving the command message to release the bearer channel sends a bearer channel release message (REL) to the intelligent information providing system 120, and the intelligent information providing system 120 releases the bearer channel. The bearer channel release confirmation message (REC) is transmitted to the service exchange 110.

The service controller 140 now sends a call information request signal to the service exchange 110. In case of performing Type 4 billing, a charging application signal is sent to the service exchanger 110.

In addition, the service controller 140 transmits a BCMS event request signal (Request BCMS Event) and a connection signal between the caller 310 and the called party 320 to the service exchange 110.

The service switch 110 sends a head address message IAM to the second end switch 135 to which the called party 320 is connected, including the service access number and the free phone number entered by the caller 310.

Then, the second end switch 135 sends a message (ACM: Address Complete Message) confirming that the service access number and the free phone number have been received to the service switch 110, and then again the caller 310 and the called party 320. Send a message for bearer channel connection between them.

Now, the service switch 110 sends a message to the called party 320 for a bearer channel connection, whereby a call is started between the calling party 310 and the called party 320.

As described above, when the service exchanger 110 and the intelligent information providing system 120 are implemented as independent devices, the bearer setting between the service exchanger 110 and the intelligent information providing system 120 may be performed. There is a problem that a message exchange is required for the processing and release of the established bearer channel.

Accordingly, the present invention has been made to solve the above problems, and provides a method for performing a pre-phone service on a service exchanger (hereinafter referred to as an IP-embedded service exchange) having an intelligent information providing system. There is this.

In order to achieve the above object, the method for controlling pre-phone service in the intelligent information providing system-embedded service switchboard according to the present invention has a predetermined service access number (SAC) and a free phone number input by a predetermined caller. Delivered to a predetermined service controller through a first end-station exchange and the IP embedded service exchange, the service controller requesting the IP embedded service exchange to perform an IP function; The IP embedded service exchanger activating a predetermined IP function unit embedded therein; The IP function unit sends a message to the service controller that it is ready to receive a command, and the service controller sends a message to the IP function unit to collect predetermined subscriber identification information; Sending, by the IP function unit, a response message for establishing a bearer channel to the first end switch; A caller inputs the subscriber identification information, and the service controller inputs and analyzes the subscriber identification information analyzing the information; And a bearer channel is established between the caller and the predetermined called party, and a call is carried out.

In this case, the subscriber identification information input and analysis process may include transmitting a predetermined guide message to the caller by the IP function unit; The caller inputting predetermined subscriber identification information; Sending, by the IP function unit, a message to examine the received subscriber identification information to the service controller; The service controller examines the subscriber information it has and sends a message to the IP function unit to release the bearer channel; And ending the activation of the IP function unit.

1 is a physical configuration diagram of an advanced intelligent network,

2 is a structural diagram of a general service exchanger;

3 is a flow chart of pre-phone service control in a service exchange having an independent intelligent information providing system;

4 is a schematic diagram of an intelligent information providing system built-in service exchanger;

5 is a flowchart of a pre-phone service control in the intelligent information providing system built-in service exchange.

* Explanation of symbols for main parts of the drawings

110: service exchange 111: access switching subsystem (ASS)

112: Interconnection Network Subsystem

113: Central Control Subsystem

120: intelligent information providing system 130: first station exchange

135: second end exchange 140: service controller

150: service data system 160: subsystem

170: SS7 signaling network 200: IP embedded service exchange

210: advanced intelligent network processing unit 211: exchange function unit

212: IP function unit 213: call processing function unit

214: question and answer application unit 215: SS7 link connection function

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

4 is a schematic diagram of an intelligent information providing system built-in service exchanger 200. An advanced intelligent network processing unit 210 and an advanced intelligent network traffic managing unit are installed as one ASS among a plurality of ASSs constituting the service exchanger 110 of FIG. INS 220, and CCS 113, including (221).

At this time, the advanced intelligent network processing unit 210, which implements the advanced intelligent network function, implements the SS7 link connection function unit 215, the question-and-answer application unit 214, and the advanced intelligent network service switch function that interface with the service controller 140. IP function unit 212 that matches the switching function unit 211 and the service controller 140 to perform intelligent network application part (INAP) operation processing, and is in charge of a call processing function by connecting to a line or a trunk. It consists of a call processing function unit 213.

5 is a flowchart of a pre-phone service control in the IP embedded service exchange 200 according to the present invention.

Initially, the caller 310 connected to the first terminal exchange 130 inputs a service access code (SAC) and a free phone (FP) number to request an intelligent network service, thereby providing an intelligent network service. To start.

The service access number and the free phone number inputted from the caller 310 are transmitted to the first terminal exchange 130, and the first terminal exchange 130 again transmits the service access number and the free phone number to the IP embedded service exchange 200. Tell it to.

The IP embedded service exchanger 200 having received the service access number and the free phone number through the call processing function unit 213 detects the intelligent network service request for the corresponding call, and sends an SS7 link access function to inform it of this. It is sent to the service controller 140 through the unit 215. In addition, the service controller 140 receiving the message sends a message (Establish Temporary Connection) requesting the bearer channel establishment to the IP embedded service exchange 200.

The IP embedded service exchanger 200 receiving the message requesting the bearer channel setting drives the IP function unit 212 of the advanced intelligent network processing unit 210.

That is, since the IP embedded service exchanger 200 has the IP function unit 212 which is a block for performing the function of the intelligent information providing system 120, the intelligent information providing system 120 is implemented as a separate device. It is not necessary to transmit and receive a message for establishing a bearer channel between the service exchange 110 and the intelligent information providing system 120 that was required for. Only by operating the IP function unit 213 can replace this process.

In addition, the IP function unit 212 sends a message (Assist Request Instruction) to the service controller 140 that it is ready to receive a command, and the service controller 140 prompts the user to collect necessary information from the caller 310. And collect user information) to the IP function unit 212.

The IP function unit 212 receiving the information gathering command for the caller 310 sends an answer message (ANM: Answer Message) for establishing a bearer channel between itself and the caller 310 to the first terminal exchange 130. . As a result, a bearer channel is established between the sender 310 and the IP function unit 212.

After the bearer channel is established, the IP function unit 212 transmits an announcement message to the caller 310 to input a personal identification number (PIN). One example is the message "Please enter subscriber identification number." Then, the caller 310 listening to the guide message inputs his subscriber identification number.

Receiving the subscriber identification number of the caller 310, the IP function unit 212 sends a command message (Collect User Information) to examine the subscriber information to the service controller 140.

Then, the service controller 140 examines the subscriber information that it has, and then sends a command message (Disconnect Forward Connection) to release the bearer channel between the service switchboard 110 and the intelligent information providing system 120.

The advanced intelligent network processing unit 210 of the IP embedded service exchanger 200 receiving the command message for releasing the bearer channel terminates the activation of the IP function unit 212, which is an intelligent information providing system function block. At this time, the command message to release the bearer channel is a message to end the activation of the IP function unit 212.

That is, even in this case, since the IP embedded service exchanger 200 has the IP function unit 212 which is a block for performing the function of the intelligent information providing system, the intelligent information providing system 120 is implemented as a separate device. It is not necessary to send and receive a message for bearer connection release between the service exchange 110 and the intelligent information providing system 120 required for.

Now, the service controller 140 sends a call information request signal to the IP embedded service exchange 200. In case of performing Type 4 billing, the charging application signal (Apply Charging) is transmitted to the IP-embedded service exchanger 200. These signals are received via SS7 link connection function 215.

In addition, the service controller 140 transmits a BCMS event request signal (Request BCMS Event) and a connection signal between the caller 310 and the called party 320 to the IP embedded service exchanger 200.

The IP-embedded service exchanger 200 sends a head address message (IAM) including the service access number and free phone number inputted by the caller 310 to the second end-station exchanger 135 to which the called party 320 is connected. .

Then, the second end exchange 135 transmits a message (Address Complete Message) confirming that the service access number and the free phone number have been received to the IP embedded service exchange 200, and then again the caller 310 and the called party 320. Send a message for bearer channel connection between them.

Now, the IP-embedded service exchanger 200 sends a message for a bearer channel connection back to the called party 320 so that a call is started between the calling party 310 and the called party 320.

As described above, when the pre-phone service is performed in the IP embedded service exchanger 200 using the present invention, bearer channel setting or release required between the service exchanger 110 and the intelligent information providing system 120 is performed. Since there is no need for message exchange, the smart network service can be provided more efficiently and quickly.

Claims (2)

In the method for performing the pre-phone service using the IP (Intelligent Information Providing System) built-in service exchanger 200, the service access number and the pre-phone number input by the predetermined caller 310 are determined by the predetermined first terminal exchange ( 130 and delivered to a predetermined service controller 140 through the IP embedded service exchanger 200, the service controller 140 requesting the IP embedded service exchanger 200 to perform an IP function; The IP embedded service exchanger (200) starting a predetermined IP function unit (212) therein; The IP function unit 212 sends a message to the service controller 140 that it is ready to receive a command, and the service controller 140 sends a message to the IP function unit 212 to collect predetermined subscriber identification information. Sending; Sending, by the IP function unit 212, a response message for establishing a bearer channel to the first end switch 130; The caller 310 inputs the subscriber identification information, and the service controller 140 inputs and analyzes the subscriber identification information for analyzing the information; And The bearer channel is set up between the caller (310) and a predetermined called party (320), and a call is performed. The method of claim 1, wherein the subscriber identification information input and analysis process comprises the steps of: the IP function unit (212) sending a predetermined guide message to the caller (310); The caller (310) inputting predetermined subscriber identification information; The IP function unit 212 sending a message to the service controller 140 to examine the received subscriber identification information; The service controller 140 examines the subscriber information it has and sends a message to the IP function unit 212 to release the bearer channel; And The IP embedded service exchanger (200) comprises a step of terminating the startup of the IP function unit 212, the pre-phone service control method in the intelligent information providing system embedded service exchange.