KR20050007770A - A method and system for providing ring back tone service to a wired phone user - Google Patents

Abstract

PURPOSE: A method and a system for supplying a call connection tone to a wired subscriber are provided to store information only showing whether a call connection tone service is registered in a general wired MSC, and to store information on a call connection tone selected by a subscriber in an SCP(Service Control Point), thereby supplying the call connection tone to a wired subscriber. CONSTITUTION: When a call is attempted to a receiving subscriber, a receiving MSC retrieves an MSC DB to confirm whether the receiving subscriber is registered in a call connection tone service. If so, the receiving MSC transmits information on the subscriber to an SCP. The SCP analyzes the subscriber information, and transmits connection information on a sound source deliver server of the connection tone selected by the subscriber to the receiving MSC. The receiving MSC routes a call to the sound source deliver server to connect the sound source deliver server with an originating side, so that the call connection tone can be delivered to the originating side instead of a ring back tone.

Description

A method and system for providing ring back tone service to a wired phone user}

The present invention relates to a method and a system for providing a ring back tone to a wired subscriber. More specifically, the general wired switch stores only whether the ring back tone service is subscribed and information on the ring back tone selected by the subscriber constitutes an intelligent network. A method and system for providing ring back tone even to wired subscribers by storing in an element, a service control system (SCP).

The ring back tone service provides subscribers who subscribe to the service with various ring back tones such as music or melody specified by the subscriber instead of the ringing back tone signal, which is a tedious and monotonous ring tone to the caller who calls the subscriber when the call arrives. It is a service. However, the conventional ring back tone service has been provided only to wireless telephone subscribers. In other words, wired subscribers (such as telephones in private homes or subscribers to private exchanges) did not subscribe to ring back tone services. Thus, the caller calling the wired subscriber was still forced to hear the conventional ringback tone signal rather than the ring back tone.

1 is a system configuration diagram showing a conventional technique of providing a ring back tone to a wireless subscriber. In the ring tone service currently being provided, when an incoming call is made to a wireless subscriber, the switch 20 queries the home location register (HLR) 30 which has all the information of the wireless subscriber and the ring back tone. Retrieves whether the subscriber is a service subscriber and the ring back tone specified by the subscriber, receives the result, and then routes the call to the sound source server 40 that can listen to the ring back tone to the caller 10 instead of the ringback tone signal. Let's hear. And, at the same time, when the called party responds by sending a ring to the called wireless subscriber, it releases the call path connected to the sound source server 40 and connects the caller 10 and the called party to make a call.

In this way, the currently provided ring back tone service, when an incoming call is made to the wireless subscriber, the switch 20 queries the HLR 30 having all the information of the wireless subscriber to search for the ring back tone desired by the subscriber and the corresponding sound source. It is comprised so that connection to the transmission server 40 is possible. Here, the HLR (Home Location Register) is a database that stores information of CDMA mobile communication subscribers, and has a structure capable of real-time database processing in conjunction with a customer center. Therefore, the wireless subscriber can designate the ring back tone from time to time or change the changed ring back tone using the Internet.

However, this approach is not applicable to fixed subscribers. This is because wired subscriber information cannot be registered with HLR at present. In addition, the general wired switch 20 in which the information of wired subscribers is stored has a problem in that the subscriber may not provide a function for allowing the subscriber to access the designated ringing tone or change it from time to time. For this reason, until now, ring tone service has been provided only to wireless subscribers.

The present invention is directed to improving this conventional problem. Accordingly, an object of the present invention is to provide a ring back tone to a wired subscriber by storing only the ring back tone service subscription in a general wired switch and storing information on the ring back tone selected by the subscriber in a service control system (SCP), which is an element constituting an intelligent network. It aims to provide a way to.

1 is a system configuration diagram showing a conventional technique of providing a ring back tone to a wireless subscriber.

2 is a block diagram illustrating a system for providing a ring back tone to a wired subscriber according to the present invention.

3 is a flowchart illustrating a procedure for providing a ring back tone to a wired subscriber in accordance with the present invention.

※ Explanation of code about main part of drawing ※

10 ...... Sender 20 ...... Exchange

30 ...... Home Location Register (HLR) 40,140..sound source server

50 ...... Customer center 110 .....

120 ..... terminating exchange 130 ..... Service Control System (SCP)

150 ..... Service Management System (SMP)

A method for providing a ring back tone to a wired subscriber of the present invention for achieving the above object comprises: when a call is attempted to a called subscriber, a called side exchange searches a database of the exchange to determine whether the called subscriber is a ring back tone service subscriber; If the called subscriber is a ring back tone service subscriber, sending the subscriber information to the SCP by the called side exchange; Analyzing, by the SCP, the subscriber information and transmitting the connection information for the sound source transmission server of the connection tone selected by the subscriber to the called exchange; And the destination exchange receiving the connection information for the sound source server from the SCP routes a call to the sound source server so as to connect the sound source server and the calling party so that a ringback tone is transmitted to the calling party instead of ringback tone. Characterized in that.

In addition, a system for providing a ring back tone to a wired subscriber, which is another aspect of the present invention, stores information on whether a wired subscriber subscribes to a ring back tone service, and sends out a caller and a sound source between the calling subscriber and the called party. A plurality of exchanges providing a connection between the servers; The wired subscriber subscribed to the ring back tone service stores information on the selected ring tone, and transmits the connection information of the sound source server of the ring tone selected by the subscriber to the switch according to the query of the switch, and is connected to the service switching point (SSP). SCP (Service Control Point) that can change the ring tone at the subscriber's request; And it stores the actual sound source information about the connection sound, characterized in that it comprises a sound source transmission server connected to the calling party through the exchange to send the connection sound to the calling party.

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

2 is a block diagram illustrating a system for providing a ring back tone to a wired subscriber according to the present invention. As shown in Figure 2, the system according to the present invention is composed of the source exchange 110 and the destination exchange 120, the sound source server 140, and SCP (130). As described above, subscribers who have subscribed to the ring tone service generally want to change their ring tone freely. Unlike the HLR of the wireless communication network, the current exchange can store or change information about the ring tone that is continuously changed by connecting with the general subscriber. There is no function. Therefore, in order to provide a ring back tone service to a wired subscriber, it is impossible to have ring back tone information for each subscriber in the exchange system.

The present invention utilizes a Service Control Point (SCP) 130, which is part of an intelligent network, to overcome this problem. The intelligent network separates the basic call processing function and the service control function that the exchange performed in the existing telephone network, and causes the SCP to execute the service control function. When the destination exchange 120 detects a call processing event required to provide a ring back tone service and informs SCP 130 of the call, the SCP 130 executes a process corresponding to the ring back tone service, and then calls the call to the exchange. Instructs the processing operation. On the other hand, as shown in Figure 2, SCP 130 is connected to the service management system (SMP; Service Management Point (SMP) 150). The SMP 150 is a management system supporting the SCP 130 and manages data records of subscribers necessary for service control. The network operator can centrally manage the service-related database of SCP 130 using SMP 150, and the service subscriber can change his / her service-related data from time to time using this system.

In other words, such as querying the HLR to find out the ring tone information of the wireless subscriber, the wired switch system is implemented by using an intelligent network query to the SCP 130. The SMP 150 stores and manages the data.

Then, the function and role of each system component in the present invention will be described in more detail.

First, the exchanges 110 and 120 register in the same manner as the existing additional service to distinguish whether the corresponding subscriber is a ring back tone subscriber. In the existing supplementary services, only the operator was able to register / delete / change by accessing the exchange. The ringback tone service can be registered / deleted like the existing supplementary service so that operators can operate it conveniently. At this time, the information registered at the exchange is only about whether the wired subscriber is a subscriber of the ring back tone service, and further information, that is, information on which dial tone the subscriber has selected, is not registered at the exchange.

The information on the dial tone selected by the subscriber to the ring back tone service is stored in the SCP 130, and the subscriber may change the dial tone information stored in the SCP 130 through the SMP 150 at any time. Therefore, when the called party is called, the called party exchanger 120 searches its database and performs an intelligent network query for SCP 130 when the subscriber is a ring back tone subscriber. The SCP 130 analyzes the subscriber's information sent by the called party's exchange 120 to query its own ring back tone database, extracts information on the selected ring tone, and transmits the sound source server 140 for the ring tone. ) To transmit to the destination side exchange 120 to connect. The receiving side exchange 120 receives the connection information for the sound source server 140 from the SCP 130, and then executes another incoming subscriber process. Then, the newly generated process routes the call to the sound source server 140 and connects the calling party with the sound source server 140 to provide the calling party with the sound source server 140 instead of ringback tone. Listen for the ring tone. At the same time, the other called subscriber process sends a ring to the called subscriber. Thereafter, when a response signal arrives from the called party subscriber, the connection to the sound source server 140 is released and the called party and the calling party subscriber are connected so that the called party can talk to each other.

The above-mentioned contents are summarized as a processing sequence according to time flow as follows.

First, (1) When a wired subscriber applies for the ring back tone service, the operator registers the presence or absence at the switchboard and registers the ring tone information selected by the subscriber in the SCP 130. At this time, the subscriber can access the SCP 130 to change their desired connection sound. (2) When a call is attempted to the wired subscriber, the destination exchange 120 searches its database to determine whether the subscriber is a ring back tone service subscriber. (3) If the subscriber is a ring back tone service subscriber, the destination exchange 120 transmits the subscriber information to SCP 130. (4) The SCP 130 analyzes the subscriber information and transmits the connection information for the sound source transmission server 140 of the connection tone selected by the subscriber to the destination side exchange 120. (5) the destination exchanger 120 receiving the connection information for the sound source server 140 from the SCP 130 connects the sound source server and the calling party by routing a call to the sound source server 140; Instead of ringback tone, the ring back tone is sent to the calling party and the ring is sent to the called party. (6) When the called party responds, release the connection between the sound source server and the calling party and connect the calling party and the called party so that the calling party and the called party can talk.

3 is a flowchart illustrating the above-described procedure for providing a ring back tone to a wired subscriber. The abbreviation used in the flowchart is as follows. IAM (Initial Address Message) is a signal when a call is received from another station, ACM (Address Complete Message) is an incoming call notification signal, ANM (Address Answer Message) is an incoming call notification signal, InitialDP is an initial query signal to the intelligent network, ETC (Esteblish Temporary Connesction) is a command signal from the SCP to the exchange to connect to the sound source server, EvtRpt (Event Report) is a signal from the exchange to the SCP when an event occurs, and DFC (Disconnect Forward Connection) is a signal to disconnect from the SCP. The command signal, REL (Release) is a signal to release the call to the exchange, and RLC (Release Complete) is an Ack message after receiving the REL.

Conventional ring back tone service was only available to wireless subscribers. However, as described so far, the present invention enables a ring back tone service even for wireline subscribers. Since the ring back tone service can be usefully used not only for general home telephone subscribers but also for corporate promotion of corporate subscribers, the present invention provides a very useful function for both service providers and customers.

Claims (7)

When a call is attempted at a called party, a called side exchange searching the database of the exchange to determine whether the called party is a ring back tone service subscriber; If the called subscriber is a ring back tone service subscriber, sending the subscriber information to the SCP by the called side exchange; Analyzing, by the SCP, the subscriber information and transmitting the connection information for the sound source transmission server of the connection tone selected by the subscriber to the called exchange; And Receiving the connection information from the SCP to the sound source server by routing the call to the sound source server so as to connect the sound source server and the caller so that a ringback tone is transmitted to the caller instead of ringback tone; Providing a ring back tone to a wired subscriber. The method of claim 1, In the step of causing the ring back tone to be sent to the calling party, wherein the called side exchange routes a call to the sound source server and sends a ring to the called party. The method of claim 1, Disconnecting the sound source server and the calling party when the called party answers, and connecting the calling party and the called party to allow the calling party and the called party to make a call. How to give it. The method according to any one of claims 1 to 3, The called party exchange executes one more called subscriber processor, one process attempts to connect the sound source server and the calling party, and the other process sends a ring to the called subscriber. How to give it. A plurality of exchanges storing information on whether the wired subscriber subscribes to the ring back tone service, and providing a connection between the calling subscriber and the called subscriber, and between the calling subscriber and the sound transmitting server; The wired subscriber subscribed to the ring back tone service stores information on the selected ring tone, and transmits the connection information about the sound source server of the ring tone selected by the subscriber to the switch according to the query of the switch, and is connected to the service switching point (SSP). SCP (Service Control Point) that can change the ring tone at the subscriber's request; And A system for providing a ring back tone to a wired subscriber, comprising: a sound source sending server storing actual sound source information relating to the ring tone and connected to the calling party through an exchange to send the ringing tone to the calling party. The method of claim 5, wherein When a call is attempted to the called subscriber, the called party exchange determines whether the called subscriber is a ring back tone service subscriber and transmits the subscriber information to the SCP, and receives the connection information of the sound source server from the SCP to the sound source server. A system for providing a ring back tone to a wired subscriber, characterized in that to connect the sound source sending server and the calling party by routing a call so that a ring back tone is sent to the calling side instead of a ringback tone. The method according to claim 5 or 6, When the called party exchange connects the sound source server and the calling party, it executes one more called subscriber processor, one process attempts to connect the sound source server and the calling party, and the other process establishes a ring to the called party. A system for providing a ring back tone to a wired subscriber, characterized by transmitting.