KR20040092519A - Method and apparatus for providing ring back tone using a private automatic branch exchange - Google Patents

Abstract

PURPOSE: A method for providing a ring-back tone by using a private automatic branch exchange, and an apparatus therefor are provided to replace the existing ring-back tone of a call at a direction number by a ring-back tone set by a user. CONSTITUTION: A PABX(Private Automatic Branch Exchange) receives a call connection request signal from an inward exchange(401). A ring-back tone providing apparatus receives caller, receiver, and forwarding reason information from the PABX through a forwarding function set in the PABX(403). The ring-back tone providing apparatus judges whether call connection setup information corresponding to receiver information is stored in a sound source database(405). If a receiver uses a ring-back tone, the ring-back tone providing apparatus extracts a private ring-back tone source corresponding to the receiver information from the sound source database(407). The ring-back tone providing apparatus transmits the extracted private ring-back tone source to the inward exchange through a trunk of the PABX(409). The ring-back tone providing apparatus calls a called terminal by using a telephone number included in the receiver information(411). The ring-back tone providing apparatus receives a response signal(413). The ring-back tone providing apparatus switches an inward truck and a loop trunk(415). If a call path is set up, a call conversation is performed between a calling terminal and a called terminal(417). If the receiver does not use a ring-back tone, the ring-back tone providing apparatus requests an inward call at a direct number of the receiver(419).

Description

Method and apparatus for providing ring back tone using a private exchange {Method and apparatus for providing ring back tone using a private automatic branch exchange}

The present invention relates to a method and an apparatus for providing a ring back tone using a private exchange that provides an enterprise-centered distinctive ring back tone using a private exchange.

In general, a ring-back tone refers to a tone sent from an exchange to a calling subscriber to notify the calling subscriber that a calling signal is being sent to the called subscriber in a public switched telecommunication network or a mobile communication network. Recently, various ring back tone services have been developed and used to replace the ring back tone. For example, user-selectable coloring, peeling, and other services such as ringback tone replacements, which replace the ringback tone provided uniformly according to the ITU-T specification, are exploding in popularity. The ring back tone replacement sound service will be described in detail as follows.

1 is a signal flow diagram illustrating a signal flow in a conventional mobile communication network for implementing the ringback tone replacement tone service.

Referring to FIG. 1, when a calling terminal requests a call connection to a called terminal corresponding to a called party subscribed to a ringback tone replacement tone service, the calling side exchange (MSC) requests called location information to a home location register (HLR). (Location Request) (step 101). The HLR requests routing information to the called side exchange (MSC) in response to the called location information request from the calling side exchange (step 103). The destination side exchange sends routing information (TLDN: Temporary Local Directory Number) to the HLR in response to the routing information request signal received from the HLR (step 105). The HLR then sends the called location information to the originating exchange using the received routing information (step 107).

The originating exchange exchange requests an ISUP call connection to the called exchange based on the routing information (step 109). The called exchange reads the ringback tone replacement tone service setting information previously stored in the storage device according to the ISUP call connection request signal transmitted from the calling exchange, and then a user corresponding to the called terminal subscribes to the ringback tone substitute tone service. In this case, the ISUP call connection request signal is transmitted to the sound source control device using the routing information corresponding to the previously stored sound source control device (step 111). In this case, the ISUP call connection request signal includes a called terminal identifier and a calling terminal identifier. As a result of performing this process, a call path is formed between the calling exchange, the called exchange and the sound source providing device.

The sound source providing apparatus requests a sound source code to the sound source providing control server based on the received called terminal identifier and the calling terminal identifier (step 113). In response to the sound source code request signal, the sound source providing control server searches for a sound source code stored in connection with the called terminal identifier and the calling terminal identifier and transmits the found sound source code to the sound source providing apparatus (step 115). Thereafter, the sound source providing apparatus transmits a ringback tone substitute sound corresponding to the sound source code received from the sound source providing control apparatus to the calling terminal through the formed call path (step 115). When the called exchange recognizes that the called terminal responds while the ringback tone replacement tone is transmitted to the calling terminal, the called exchange requests the ISUP call release to the sound source providing apparatus (step 117). The sound source providing apparatus releases the call path set as the calling terminal after receiving the ISUP call release request signal from the called exchange. Thereafter, the called terminal can perform a normal call using the call path set in the calling terminal.

The called terminal subscriber can use the above-described ring back tone substitute tone service to give the calling terminal subscriber a ring back tone substitute tone that replaces the existing uniform ring back tone selected by the calling terminal subscriber. The reason for the commercial success of the ringback tone replacement sound service may be that it satisfies the desire of the modern man to express his personality to some extent.

However, the conventional ringback tone replacement sound service is provided by an intelligent network device or a service providing device coupled to an exchange included in a wired / wireless communication network such as a mobile communication network or a public telephone communication network. Therefore, there is a limit to setting and changing a direct ring tone. For example, it is difficult for a company to provide ringtones to promote its company. In addition, for example, in a company that assigns a plurality of direct telephone numbers to each employee, a particular employee has a problem in that it is difficult to use his / her own ring back tone.

An object of the present invention is to provide a ring back tone by a user setting instead of the existing ringback tone for a call to a direct dial number for each employee of the company by combining a ring back tone providing device to a private exchange installed in a private network such as a company To provide a method and apparatus for providing a ring back tone using a private exchange.

1 is a signal flow diagram in a mobile communication network for implementing a conventional ringback tone replacement tone service.

2 is a view schematically showing a configuration that can be applied to the ring back tone service using a private exchange according to an embodiment of the present invention.

3 is a signal flow diagram illustrating a background sound providing method in a private exchange according to an embodiment of the present invention.

4 is a flowchart illustrating a background sound providing method in a private exchange according to an exemplary embodiment of the present invention.

<Description of the reference numerals for the main parts of the drawings>

201: calling terminal 203: calling mobile terminal

205: calling party exchange 207: general telephone switching network (PSTN)

209: private exchange 211-215: called terminal

221: service providing device 223: sound source database

225: operation terminal 227: the Internet

In order to achieve the above object, according to an aspect of the present invention, a wired / wireless communication network including a calling side exchange (MSC) managing at least one calling terminal and a called side exchange (MSC) managing at least one called terminal. A method for providing a ring back tone in an apparatus for providing a ring back tone coupled to a private exchange within the device, the method comprising: receiving a call connection request signal from the called side exchange through a trunk of the private exchange (PABX Trunk), wherein the private In the trunk of the switch, an incoming call forwarding function is set for the apparatus for providing a ring back tone, by using the called terminal identifier included in the call connection request signal and corresponding to the called terminal. Determining whether to use, if the called terminal uses a ring back tone, the determination result indicates that the Extracting a ring back tone sound source corresponding to a new terminal identifier from a sound source database, and transmitting the ring back tone sound source to the called side exchange through a channel established between the called side exchange and the private exchange trunk, wherein the incoming call The side exchange transmits a ring back tone source to the calling terminal through the calling side exchange, calling the called terminal through an extension (subscriber line) of the private exchange, receiving a response signal from the called terminal; And switching the trunk and the extension of the private exchange by using the tightly coupled link of the private exchange, wherein the calling terminal and the called terminal use a communication path established by switching control through the tightly coupled link. Call using a private exchange, characterized in that to talk A method for providing a connection sound can be provided.

According to another aspect of the present invention, a call coupled to a private exchange in a wired / wireless communication network including a calling side exchange (MSC) managing at least one calling terminal and a called side exchange (MSC) managing at least one called terminal. A ring back tone providing apparatus for providing a ring tone, comprising: means for receiving a call connection request signal from the called exchange through a trunk of the private branch exchange (PABX Trunk), wherein the private branch trunk is provided with respect to the ring back tone providing apparatus; Means for determining whether a called terminal uses a ring back tone using a called terminal identifier included in the call connection request signal and corresponding to the called terminal, the result of the determination When the called terminal uses a ring back tone, the call connection corresponding to the called terminal identifier Means for extracting a sound source from a sound source database, means for transmitting the ring back tone source to the called side exchange through a channel established between the called side exchange and the private exchange trunk, wherein the called side exchange is the originating exchange Transmitting a ring back tone source to the originating terminal through-means for calling the terminating terminal through the private exchange extension, means for receiving a response signal from the terminating terminal, using the tightly coupled link of the private exchange; Means for switching the trunk and extension of the private exchange, wherein the calling terminal and the called terminal make a call using a communication path established by switching control through the tightly coupled link. A connection sound providing device can be provided.

In addition, according to another aspect of the present invention, coupled to a private exchange in a wired or wireless network comprising a calling side exchange (MSC) managing at least one originating terminal and a called side exchange (MSC) managing at least one called terminal. A system for providing a ring back tone, the system comprising: a memory in which a program is stored and a processor coupled to the memory to execute the program, wherein the processor is configured to execute, by the program, the private from the destination exchange. Receives a call connection request signal through a PABX trunk, wherein the private exchange trunk is configured with a forwarding call forwarding function for the ring back tone providing device, included in the call connection request signal And using the called terminal identifier corresponding to the called terminal, the called terminal If it is determined that the terminal uses the ring back tone, and the determination result indicates that the called terminal uses the ring back tone, the ring tone sound source corresponding to the called terminal identifier is extracted from a sound source database, and the called side exchange and the private exchange Transmitting the ring back tone source to the called side exchange through the channel established between trunks, wherein the called side exchange transmits the ring back tone source to the calling terminal through the calling side exchange; Calling the called terminal, receiving a response signal from the called terminal, and switching and controlling the trunk and extension of the private exchange using the tightly coupled link of the private exchange, wherein the calling terminal and the called terminal By using the channel established by switching control over the mating link Woman using a private branch exchange wherein the call RBT providing system can provide.

In a preferred embodiment, the system for providing a ring back tone using the private exchange further includes an operation terminal for operating and managing the ring back tone sound and ring back tone usage information stored in the sound source database.

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

2 is a diagram schematically showing a configuration that can be applied to the ring back tone service using a private exchange according to an embodiment of the present invention.

Referring to FIG. 2, a service providing system for providing a ring back tone includes an originating exchange (MSC) that performs at least fixed station or originating terminal 201 or mobile station or originating mobile terminal 203 and control of allocation of communication channels to them. 205) a private exchange coupled to a wired or wireless communications network. In this case, the private exchange may be combined by a destination exchange that is different from the originating exchange.

The private exchange 209 includes an intelligent device (IP) / call ring tone providing device 221 capable of emitting a ringback tone set for each called number and a sound source database (DB) 223 for storing sound source information. The intelligent equipment 221 includes a web (WEB) operating terminal 225 to set up or manage a ring back tone service at the private exchange 209.

By the above-mentioned configuration, the intelligent equipment 221 coupled to the destination side private exchange 209 at the call request of the calling terminal 201; 203 is extracted from the sound source database 223 by the ringback tone set for each called number. The call is sent to the calling party terminal 201, 203. And the intelligent equipment 221 calls the destination terminal (211; 213; 215) in the private telephone network, by switching control between the trunk and the extension (subscriber line) through a tightly coupled link in the private exchange 209 in response to the destination terminal; The calling terminal 201; 203 and the called terminal 211; 213; 215 can talk.

In addition, the employee who wants to use the ring back tone service in the private telephone network sets up the service through a telephone or a computer terminal connected to the Internet. For example, as mentioned above, in order to set a desired ring back tone to his direct number, the user or manager staff accesses the management module of the corresponding ring back tone providing device through a web-connected operation terminal and makes necessary settings. Since the operation terminal will be apparent to those skilled in the art, a detailed description thereof will be omitted.

Next, a method for providing a ring back tone according to the present invention will be described in detail with reference to FIG. 3. First, the terms mentioned in FIG. 3 will be briefly described. In FIG. 3, CO refers to a co-located exchange concentrator and includes an exchanger (MSC) in a wired or wireless communication network. PABX stands for Private Automatic Branch Exchange, hereinafter referred to as Private Exchange.

Trunk refers to a device installed in an incoming and outgoing line accommodated in a switch frame, and constitutes a part of a call path and controls its monitoring. Such trunks typically include the supply of current, signal transmission, and fee calculation mechanisms required for the call. SLC stands for Single Line Card. It is coupled to a loop trunk of trunk lines and stations in the private exchange.

In addition, DID refers to a direct inward dialing method, and includes a service in which an incoming call from a trunk line to a subscriber telephone of an automatic branch exchange is automatically connected to a designated extension telephone without passing through a relay station. In addition, IP refers to an exchange, a service control node, or an intelligent device scattered in a communication network, and integrates a control database in a network organically through a common signal network or a data network, and uses various computer powers to provide various communication services. Includes devices that are flexible and easy to maintain.

And Alto (R2) refers to the R2 signal or the R2 signaling scheme, in ITU-T, defined in the telecommunications network, in particular for the exchange of information on the establishment and control and management of connections. That is, the R2 signaling method refers to a method of exchanging information necessary for controlling the configuration, maintenance, charge and recovery of a call path in a communication network between a subscriber station and an exchange, an exchange and an exchange.

PRI is an interface between an ISDN (Integrated Services Digital Network) user and a communication network for a primary access subscriber. Here, the primary group access subscriber refers to a high-volume business subscriber having facilities such as a digital private branch office switch (PABX) or a local information network (LAN). For example, the primary group access subscriber is a 23B + D primary group transmission structure composed of a combination of 23 B channels (64 kbps) and 1 D channel (64 kbps). Or a 30B + D primary group access structure consisting of a combination of 30 B-channels (64Kbps) and 1 D-channel (64Kbps). Connect to the exchange. Here, the physical, electrical and logical specifications of the interface are specified in the ITU-T Recommendation 1.400 series. A plurality of subscriber station devices, such as a telephone, a PC, a workstation, and a fax machine included in the primary group access subscriber, share a PABX or a LAN, and the PABX or LAN connects to a switching center of a network provider via a network termination device. In the case of ISDN, the ISDN PABX is responsible for the functionality of the ISDN network termination device.

3 is a signal flow diagram illustrating a background sound providing method in a private exchange according to an embodiment of the present invention.

2 and 3, caller A uses a calling terminal 201 to call employee C 215 of a particular company. At this time, the caller A picks up the handset of the calling terminal 201 and presses the direct telephone number of the employee C 215 to transmit a call connection request signal to the CO via the calling switch 205 (step 301). The call connection request signal here includes at least the called terminal identifier corresponding to the called terminal.

Upon receiving the call connection request signal, the CO transmits a call connection request signal together with an R2 signal or a Primary Rate Interface (PRI) to a private exchange managing the called terminal (step 303). The PABX trunk then forwards the input signal to the IP coupled to the private exchange (step 305, step 307). At this time, the PABX trunk is set in advance to forward the incoming call to IP. The signal transmitted from the PABX trunk to the IP includes information on the originator / originating terminal, the receiver / receiving terminal and the forwarding reason.

The IP which has received the incoming call transfer checks the called number in the received recipient information in the sound source database 223 coupled to the IP to determine whether the called number uses the ring back tone. As a result of the determination, if the called number uses the ring back tone, a Private Ring-Back Tone (PRBT) is transmitted to the CO using a channel established between the calling terminal and the private exchange in the above process (step). 309). And PRBT is delivered from the CO to the calling terminal.

The IP then calls the called terminal using the called number in the receiver information received from the PABX trunk (step 311, step 313). Here, the call to the called terminal is substantially performed through the PABX extension. When the called terminal responds (step 315), the IP switches and controls the station that responded to the incoming trunk using the tightly coupled link of the PABX (steps 317 and 319), thereby cutting off the channel formed on the IP and terminating the calling terminal and the called terminal. The call path is set in between (step 319). By the above process, the calling terminal and the called terminal make a call through the call path set by the called side exchange (step 321).

4 is a flowchart illustrating a background sound providing method in a private exchange according to an exemplary embodiment of the present invention.

4, first, the private exchange receives the call connection request signal from the called side exchange (step 401). Then, the ring back tone providing apparatus receives the information on the caller, the receiver, and the forwarding reason from the private exchange through the forwarding function set in the private exchange (step 403). Then, the ring back tone providing apparatus determines whether the ring back tone setting information corresponding to the receiver information is stored in the sound source database (step 405).

As a result of the above determination, if the receiver uses the ring back tone, the ring back tone providing apparatus extracts a private ring back tone sound source corresponding to the receiver information from the sound source database (step 407). Then, the extracted private ring back tone is transmitted to the destination exchange through the trunk of the private exchange (step 409). Then, the ring back tone providing device calls the called terminal by using the called terminal number included in the receiver information (step 411).

When the called terminal answers, the ring back tone providing device receives the response signal (step 413) and immediately switches control of the incoming trunk and extension of the private exchange using the tightly coupled link of the private exchange (step 415). When the call path is established by the above process, the calling terminal and the called terminal communicate with each other (step 417). If the receiver does not use the private ring back tone in step 405 above, the ring back tone providing apparatus requests the private exchange to call the recipient's direct number (step 419).

Through the steps mentioned above, employees in the enterprise can use their own ring back tone, for example, or provide callers with a distinctive ring back tone associated with their work or company.

Meanwhile, the present invention can implement services such as voice messaging or fax messaging as an additional function in addition to the above-mentioned ring back tone service. Such voice messaging or fax messaging will be apparent to those skilled in the art by the method and apparatus for providing a ring back tone according to the present invention described above, so a detailed description thereof will be omitted.

The present invention is not limited to the above embodiments, and many variations are possible by those skilled in the art within the spirit of the present invention.

According to the present invention, a private exchange device, which provides a ring back tone by a user setting instead of the existing ringback tone for a call to a direct telephone number of an enterprise by combining a ring back tone providing device with a private exchange in a private telephone network. It is possible to provide a method and apparatus for providing a ring back tone using the same.

In addition, according to the present invention, a caller may not waste time by getting a beneficial content as a call ring tone from the boring general ring back tone, and an enterprise adopting the service device according to the present invention may increase customer awareness and improve intimacy. You can get it.

Claims (4)

Providing a ring back tone in an apparatus for providing a ring back tone coupled to a private exchange in a wired or wireless network including a calling side exchange (MSC) managing at least one originating terminal and a called side exchange (MSC) managing at least one called terminal. In the way, Receiving a call connection request signal from the destination side exchange through a trunk of the private exchange (PABX Trunk), wherein the private exchange trunk is configured with a forwarding call forwarding function for the ring back tone providing device; ; Determining whether the called terminal uses a ring back tone using a called terminal identifier included in the call connection request signal and corresponding to the called terminal; If the called terminal uses a ring back tone, extracting a ring back tone sound source corresponding to the called terminal identifier from a sound source database; Transmitting the ring back tone source to the called side exchange through a channel established between the called side exchange and the private exchange trunk, wherein the called side exchange exchanges the ring back tone source to the calling terminal through the calling side exchange. Sent box; Calling the called terminal through the private exchange extension; Receiving a response signal from the called terminal; Controlling switching between a trunk and an extension of the private exchange using the tightly coupled link of the private exchange. Including, The calling terminal and the called terminal making a call using a communication path established by switching control through a tightly coupled link. Method for providing a ring back tone using a private exchange, characterized in that. Apparatus for providing a ring back tone coupled to a private exchange in a wired / wireless communication network including a calling side exchange (MSC) managing at least one calling terminal and at least one called terminal (MSC) managing at least one called terminal To Means for receiving a call connection request signal from the called exchange through the private exchange's trunk PABX trunk, wherein the private exchange trunk has an incoming call forwarding function for the ring back tone providing device; ; Means for determining whether the called terminal uses a ring back tone using a called terminal identifier included in the call connection request signal and corresponding to the called terminal; Means for extracting a ring back tone sound source corresponding to the called terminal identifier from a sound source database when the called terminal uses a ring back tone as a result of the determination; Means for transmitting the ring back tone source to the called side exchange through a channel established between the called side exchange and the private exchange trunk, wherein the called side exchange exchanges the ring back tone source to the calling terminal through the calling side exchange. Sent box; Means for calling the called terminal through the private exchange extension; Means for receiving a response signal from the called terminal; Means for switching control between the trunk and extension of the private exchange using the tightly coupled link of the private exchange. Including, The originating terminal and the called terminal making a call using a communication path established by switching control through the tightly coupled link. Device for providing a ring back tone using a private exchange, characterized in that. A system for providing a ring back tone coupled to a private exchange in a wired / wireless network including a calling side exchange (MSC) managing at least one originating terminal and a called side exchange (MSC) managing at least one called terminal. To A memory in which a program is stored; And A processor coupled to the memory to perform the program; The processor by the program, Receives a call connection request signal from the destination exchange through the private exchange's trunk PABX Trunk, where the private exchange trunk is set up with a forwarding call forwarding function for the ring back tone providing device; By using the called terminal identifier included in the call connection request signal and corresponding to the called terminal, it is determined whether the called terminal uses a ring back tone, and the determination result indicates that the called terminal uses the ring back tone. Extracting a ring back tone source corresponding to a terminal identifier from a sound source database, and transmitting the ring back tone source to the called side exchange through a channel established between the called side exchange and the private exchange trunk, wherein the called side exchange A ring tone sound source to the calling terminal through the calling exchange Transmitting, calling the called terminal through the private exchange extension, receiving a response signal from the called terminal, and switching and controlling the trunk and extension of the private exchange using the tightly coupled link of the private exchange; The originating terminal and the called terminal making a call using a communication path established by switching control through the tightly coupled link System for providing ring back tone using a private exchange, characterized in that. The method of claim 3, The mobile terminal further includes an operation terminal for operating and managing call connection sound source and call connection tone information stored in the database. System for providing ring back tone using a private exchange, characterized in that.