KR20030058653A - Apparatus and method for UMS hosting service with open API technologies - Google Patents

Abstract

The present invention provides an apparatus and method for providing a hosting service of a unified messaging system using an open application programming interface (API) technology that allows a UMS service provider to utilize a service resource of an intelligent network that provides efficient processing of traffic on a public network. As for

In the Unified Messaging Service (UMS) system that provides hosting services, a service logic for providing UMS service, a UMS database storing UMS service data and subscriber data for authentication, and a user connected through the Web A UMS application server comprising a UMS web server providing a UMS service; When the communication network accommodated by the user is connected, and the voice mail system (VMS), the fax mail system (FMS), the e-mail transmitter, the voice guide device, and the media converter are connected, the voice mail system (VMS) is requested. ), An intelligent network service system for controlling operations of a fax mailbox system (FMS), an e-mail transmitter, a voice guidance device, and a media converter; And an open gateway connected to a plurality of UMS application servers through the Internet, and connected to the intelligent network service system to interface with the intelligent network service system and the UMS application server.

Description

Apparatus and method for UMS hosting service with open API technologies} [Apparatus and method for UMS hosting service with open API technologies} using an open API (AP)

The present invention relates to an apparatus and method for providing a hosting service (hereinafter referred to as "UMS": Unified Messaging Service) of a Unified Messaging Service System using an open API (Application Programming Interface) technology. More specifically, the present invention provides an open API. Integrated messaging system using open API (Application Programming Interface) technology that aggregates various sub-network functions required for UMS service through the gateway, enables programming by UMS service provider, and enables hosting in a secure manner for network operators. The present invention relates to an apparatus and a method for providing a hosting service.

In general, UMS (Unified Messaging Service) is a service that integrates and provides various messaging services of a telecommunication network and the Internet network based on a subscriber ID.

In other words, UMS integrates and transmits messages through different networks and media such as voicemail, fax, and e-mail, and sends voice mail or fax messages left over the phone by e-mail, or arrives by e-mail. It is a service that allows you to listen to the phone over the phone.

Figure 1 shows the structure and flow for providing such a conventional UMS service, the reference numeral 100 in the figure is the entire UMS system, the UMS system 100 is a voicemail server 101 with a voicemail DB , A fax message server 102 with a fax DB, an email server 103 with an email DB, and TTS (Text-To-Speech), which converts the text contents of an email into voice to perform conversion between different kinds of messages. Media converter 104 having speech-to-text (STT) function to combine speech into text, and to transmit an appropriate announcement to a user connected to a UMS system and to receive digits from the user or to record a voice. Interactive Voice Response (IVR) 108, which is a voice processing unit, a switching unit 105 for exchanging a telephone call relayed from an external PSTN network with internal system resources, and various media and message control It consists of a UMS service logic 106 having a function of overseeing, and a UMS subscriber and service DB 107 for storing subscriber data necessary for service control and data necessary for service processing.

The UMS system provides a UMS message transmission / reception function using a telephone and a fax to a telephone user 210, a fax user 301, and a PCS mobile subscriber via a PCS mobile network in a public telephone network 200. In addition, it provides a function of transmitting and receiving a message converted to an email form in UMS to an Internet terminal user such as a PC through the Internet network (400).

In order to provide the above-mentioned UMS service, the UMS service provider has a high cost because it must have both a dedicated line for dial-up in a public telephone network and the above-mentioned devices for providing all functions of the UMS service.

In addition, since the UMS system corresponds to one node of the network, there is a problem due to line limitation when processing a large number of calls.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and the UMS hosting service structure and method for allowing a UMS service provider to utilize service resources of an intelligent network that provides services in an efficient distributed form for traffic processing on a public network. The purpose is to provide.

In addition, another object of the present invention is to provide a UMS service hopping system structure and method applying an open API technology to secure the access to such intelligent network resources.

1 is a view for explaining a structure for providing an existing UMS service.

2 is a main block diagram of a UMS hosting service apparatus using an open API according to an embodiment of the present invention.

3 is an internal configuration diagram of the open gateway 20 shown in FIG.

4 to 7 are scenarios for explaining a method of providing a hosting service of a unified messaging system using an open API technology according to an embodiment of the present invention.

Apparatus for providing a hosting service of a unified messaging system using an open API technology according to an embodiment of the present invention to achieve the above object,

In the Unified Messaging System (UMS) that provides hosting services,

A UMS application server comprising a service logic for providing a UMS service, a UMS database storing UMS service data and subscriber data for authentication, and a UMS web server for providing a UMS service to a user connected through a web;

When the communication network accommodated by the user is connected, and the voice mail system (VMS), the fax mail system (FMS), the e-mail transmitter, the voice guide device, and the media converter are connected, the voice mail system (VMS) is requested. ), An intelligent network service system for controlling operations of a fax mailbox system (FMS), an e-mail transmitter, a voice guidance device, and a media converter;

An open gateway is connected to a plurality of UMS application servers through the Internet, and is connected to the intelligent network service system to interface with the intelligent network service system and the UMS application server.

In addition, a method of providing a hosting service of a unified messaging system using an open API technology according to an embodiment of the present invention,

In the hosting service providing method applied to the Unified Messaging Service (UMS) system connected to the intelligent network service system and the UMS application server through an open gateway,

A first step of, when the UMS service is requested from the user to the subscriber through the intelligent network service system, the open gateway connects with the UMS application server to report a UMS service request to the subscriber;

A second step of the UMS application server requesting resource connection and user information collection to the intelligent network service system through the open gateway;

After the intelligent network service system makes a resource connection, it transmits a guide broadcast for collecting user information to the user, and if a digit corresponding to the user information is input from the user, the intelligent network service system transmits it to the UMS application server through the open gateway. A third process of doing;

When the UMS application server requests to record a message, the intelligent network service system sends a guide broadcast for inputting a voice message to a user, and when the voice message is input from the user, stores it in a VMS, and stores the corresponding message ID. It characterized in that it comprises a fourth process for delivering to the UMS application server.

In addition, a method of providing a hosting service of a unified messaging system using an open API technology according to an embodiment of the present invention,

In the hosting service providing method applied to the Unified Messaging Service (UMS) system connected to the intelligent network service system and the UMS application server through an open gateway,

A first step of, when the UMS service is requested from the subscriber through the intelligent network service system, the open gateway accesses the UMS application server and reports the subscriber's UMS service request;

A second step of the UMS application server requesting resource connection and user authentication information collection to the intelligent network service system through the open gateway;

After the intelligent network service system makes a resource connection, it transmits a guide broadcast for collecting user authentication information to the user, and if a digit corresponding to the user authentication information is input from the subscriber, the UMS application server through the open gateway. Transmitting to the third process;

A fourth step of performing, by the UMS application server, a user authentication procedure based on the digit, and then transmitting a message ID for a voice message stored to the subscriber to the intelligent network service system if the subscriber is a registered subscriber;

And a fifth process of the intelligent network service system extracting the voice message according to the message ID from the VMS, reproducing it, delivering it to the subscriber, and reporting the voice message delivery to the UMS application server.

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

FIG. 2 is a block diagram of an apparatus for providing a UMS hosting service using an open API technology according to an embodiment of the present invention. According to the figure, an intelligent network service providing a public service on a PSTN network 200 and a PCS network 300 is shown. The system 10 is equipped with the following additional devices. That is, the voice mailbox system (VMS) 101, the fax mailbox system (FMS) 102, the voice guidance device 40, and the media converter 104, which is a device that converts text to voice and voice to text, And an email transmitter 103 capable of sending an email to an email server.

An open gateway 20 and an INAP interface for opening resources of the public intelligent network to a third party in a secure manner. The UMS service provider utilizing the resources of the public network on the Internet may be a number of operators (operators 1 to n), each of which is equipped with UMS application servers 30. The UMS application server 30 provides a UMS DB 107 including UMS service logic 106, UMS service data and subscriber data, and a UMS service according to the UMS service logic 106 to a subscriber connected on the web. It includes a web server 31 to.

The system configuration of the open gateway 20 shown in FIG. 2 will be described in more detail with reference to FIG. 3.

The open gateway 20 is an INAP (Intelligent Network Application Part) protocol 28, and other network protocols, for example, in the case of a mobile network WIN (Wireless Intelligent Network), MAP (Mobile Application Part), CAP (CAMEL Application Part) protocol The Internet network has protocols such as Session Initiation Protocol (SIP), H.323, etc., which may be included depending on the range of networks covered by the gateway. It is a function that abstracts the function of open network as a component, and is a framework for securing false or malicious requests by authenticating and authenticating requests from external servers to be hosted, and multiple network protocols. Message control unit that integrates call control-related message processing on the call control unit 23, which provides an abstract call control API to an external service provider, and integrates messaging control functions on multiple networks and provides an abstract message control function to an external service provider. The control unit 24 includes the voice guidance, digit collection, and text prompting to service the user through announcement or sending out a string, or to request requests from external servers that are hosted for collecting response strings and response voices. Erroneous by authenticating and authenticating A framework 22 that secures malicious requests, a call control unit 23 that integrates call control-related message processing units on multiple network protocols, and provides an abstract call control API to an external service provider, and messaging control functions on multiple networks. The message control unit 24 provides an abstract message control function to the external service provider, and provides service announcements or response strings through the announcement or string transmission to the user, including voice guidance, digit collection, and text prompting. And a component layer such as a user interaction section 25 for collecting a response voice or the like.

In addition, the open gateway 20 may include a service DB 26 for managing OAM 27 related to operational management such as statistical traffic in the open gateway, information of external application servers subscribed to the UMS service, for example, an e-mail address, and the like. The open gateway 20 is provided with an open API block 21 for matching with the UMS application server 30 on the external Internet network.

If the request from the application server is received by the open API (21) to perform a functional procedure by the corresponding component, and then converted to a network protocol for transmission to the lower network, and transmitted in reverse, even if required by the network protocol Similarly, after the execution of the component is transmitted to the application server through the open API (21).

The architecture of these open gateway systems and the specifications of open APIs are described in Parlay [www.parlay.org] and JAIN (Java APIs for Intergrated Networks) [java.sun.com/products/jain/], 3GPP [www.3gpp.org]. It follows Parlay API (2.1) and the proposed system structure which are standardized in the

Hereinafter, a method of providing a hosting service of a unified messaging system using an open API technology according to an embodiment of the present invention will be described in detail with reference to the accompanying scenario.

4 is a scenario in which a UMS user leaves a message by voice to a UMS subscriber, and FIG. 5 is a scenario in which the remaining voice message is converted into a text and transmitted to a subscriber's e-mail address. The scenario is a request for sending a text message at a specific time and sending it to the subscriber's phone. FIG. 7 is a scenario in which the subscriber listens to the voice message left in the voicemail via the telephone.

According to FIG. 4, when a telephone user presses a service number of a UMS service provider, for example, 03030-111-2222 (S401_), the intelligent network service system 10 switches to a hosting service based on the service number. After determining that the registered number is transmitted to the open gateway 20 and sends an initial detection message (InitialDP) to request the service trigger (S402), the open gateway 20 receives it from the INAP unit 28, and the call processing unit ( 23), and the call processing unit 23 confirms whether the service provider corresponding to the service number is a registered service provider, and if it is confirmed as a registered service provider, the service provider from the service DB 26. Search the UMS application server address to access the UMS application server 30, and then send a call notification notification (callEventNotify) to the UMS application server 30 to the UMS application server (30). Inform that the call request has arrived (S403).

Subsequently, the UMS application server 30 transmits an event report request message (eventReportReq) to the open gateway 20 to monitor an event related to an outgoing call, and sends a user call interaction message (creatUICall) to the open gateway 20. send. Accordingly, the open gateway 20 transmits the BCSM event report request message (RequestReportBCSMEvent) to the intelligent network service system 10 (S405), and generates an instance of the user interaction unit 25.

The UMS application server 30 transmits the information delivery and collection message (sendInfoAndCollectReq) to the open gateway 20 and performs a procedure for announcement and digit collection for allowing the user to leave a message in the voice mailbox (S407).

The open gateway 20 receiving the information delivery and collection message (sendInfoAndCollectReq) transmits a resource connection message (ConnectToResource) to the intelligent network service system 10 (S408), and then transmits a user information collection request message (PromptAndCollectUserInformation.req). (S409), the intelligent network service system 10 connects the channel between the voice guidance device 40 and the user, and then voices the announcement for collecting user information stored in the voice guidance device 40, for example, "Hello? Message recording. Is 1, please press 2 to leave the contact number. "Play and output to the user terminal (telephone) (S410-1).

In response to the output, if a digit corresponding to "1" is input from the user terminal (S410-2), the intelligent network service system 10 transmits a user information collection response message (PromptAndCollectUserInformation.req) to the open gateway 20. In operation S410-3, the open gateway 20 receiving the user information collection response message (PromptAndCollectUserInformation.req) transmits the information delivery and collection response message to the UMS application server 30 (S411).

The UMS application server 30 transmits a message recording request message (recordMessageReq) to the open gateway 20 for recording a voice message, and the open gateway 20 receiving the message recording request message (recordMessageReq) is an intelligent network service system ( 10) and transmits a message receiving request message (PromptAndReceiveMessage.req) (S410-3), and the intelligent network service system 10 is a guide broadcast for recording a message stored in the voice guidance device 40, for example, Record. Play the beep "and output it to the user terminal (S414-1).

When the user terminal performs voice recording in response to the voice announcement (S414-2), the intelligent network service system 10 stores the recorded voice message in the VMS 101 and includes a message ID generated as a result. The reception response message (PromptAndReceiveMessage.resp) is transmitted to the open gateway 20 (S414-3), and the message recording response message including the message ID to the UMS application server 30 through the open gateway 20 (recordMessageRes). Transmit (S415).

In this state, when the user disconnects the call and disconnect message is transmitted from the user terminal (S416), the intelligent network service system 10 transmits a BCSM event report message (EventReportBCSM) to the open gateway 20 (S417). The open gateway 20 transmits an event report response message (eventReportRes) to the UMS application server 30 (S418) and transmits to the UMS application server 30 that all procedures according to voice message recording are completed from a predetermined user.

On the other hand, the UMS service logic 106 of the UMS application server 30 checks whether the subscriber has registered the transmission to the e-mail upon arrival of the voice message according to the setting value of the UMS DB 107 in which the subscriber information is stored, and the condition described above. When this is confirmed, the call generation message (creatCall) is transmitted to the open gateway 20 (S501), and the open gateway 20 receives it through the open API 21 and transmits it to the call controller 23, which is INAP. In accordance with the call start message (InitiateCallAttempt) is transmitted to the intelligent network service system 10 (S502). At this time, in the present invention, the called number parameter includes an e-mail address according to the data number planning parameter of the INAP standard in order to make the call start message suitable for e-mail transmission. That is, in the present invention, the call initiation parameter is extended to define a call connection if the called number is a phone and to send an e-mail if the called number is an email.

Subsequently, the UMS application server 30 transmits a user interaction call creation message (createUIcall) to the open gateway 20 (S503), and the open gateway 20 receiving the user call interaction creation message (createUIcall) is transmitted. After generating an instance in the user interaction unit 25, and transmits the resource connection message to the intelligent network service system 10 (S504).

Next, the UMS application server 30 transmits an information delivery message (sendInfoReq) including the ID of the message to be provided and the subscriber's email address to the open gateway 20 (S505), and the information delivery message (sendInfoReq). The open gateway 20 receiving the) transmits an announcement message (PlayAnnouncement) including an ID, an e-mail address, and a message conversion command of the message to be provided to the intelligent network service system 10 (S506).

The intelligent network service system 10 receiving the announcement message (PlayAnnouncement) extracts a voice message to be provided by the VMS 101 using the message ID, and extracts the extracted voice message to the media converter 104. After transmitting and converting the text message, the text message is transmitted to the e-mail transmitter 103 again, so that the voice message stored in the VMS 101 is transmitted to the e-mail by the e-mail transmitter 103 (S507).

After completing the email transmission, the intelligent network service system 10 transmits a special resource response message (SpecializedResourceReport) to the open gateway 20 (S508), and the open gateway 20 receiving the special resource response message (SpecializedResourceReport) is applied to the UMS application. The information transmission response message (sendInfoRes) is transmitted to the server 30 (S509), and the UMS application server 30 receiving the information transmission response message (sendInfoRes) transmits a release message to the open gateway 20 (S510). ).

Accordingly, the open gateway 20 sequentially releases a forward connection release message (DisconnectForwardConnection) and a release message (ReleaseCall) to the intelligent network service system 10 to release resources and calls (S511, S512).

Hereinafter, a process of delivering a text message stored through a web to a voice message will be described with reference to FIG. 6.

When the user accesses the UMS service web server 31 on the Internet, designates a single recipient or a plurality of recipients, inputs a text message to be transmitted while specifying a time to deliver the message, and then requests transmission (S601). The UMS application server 30 monitors the message delivery time and, upon reaching the delivery time, transmits a mailbox open message (openMailbox) to the open gateway 20 (S602).

The open gateway 20 that has received the mailbox open message (openMailbox) transmits a call start message (InitiateCallAttempt) to the intelligent network service system 10 (S603), and transmits a voice connection resource (ConnectToResource). Request a connection with (S605).

The intelligent network service system 10 having received the call origination start message (InitiateCallAttempt) transmits a setup message to a called subscriber to initiate call setup for voice message delivery (S604).

Subsequently, the UMS application server 30 transmits a message cycle request message (putMessage.req) including the requested text message (S606), and the open gateway 20 that has received the message cycle request message (putMessage.req). ) Transmits the announcement message (PlayAnnoucement) including the text message and the message change command to the intelligent network service system 10 through a parameter for transmitting a text field.

The intelligent network service system 10 transfers the text message included in the announcement announcement message (PlayAnnoucement) to the media converter 104, converts the text message into a voice daisy, and then when the called subscriber becomes hook-off The voice message corresponding to the registered text message is transmitted to the called party (S608), and when the transmission of the voice message is completed, a special resource report message (SpecializedResourceReport) for reporting a successful transmission is opened. To transmit (S609).

The open gateway 20 receiving the Specialized Resource Report message sends a message cycle response message (PutMessage.resp) to the UMS application server 30, and the UMS application server 30 releases resources and calls. In order to transmit a close message (S611), the open gateway 20 receiving the same is connected to the intelligent network service system 10 by sequentially transmitting a forward disconnect message (DisconnectForwardConnect) and a release message (ReleaseCall). Release resources and calls (S612, S613).

Next, a process of listening to a stored voice message by using a telephone will be described with reference to FIG. 7.

If the subscriber enters the subscriber number (03030-111-3333) through the telephone to access the intelligent network service system 10 (S701), the intelligent network service system 10 is based on the service identification code included in the subscriber number It determines that the service call is a hosting service and transmits an initial detection message (InitialDP) to the open gateway 20 (S702). The open gateway 20 receives the information through the INAP unit 28, creates an instance of the call control unit 23, and then uses the information stored in the service DB 26 to process the UMS service provider. After confirming that the service is registered, and if determined to be a valid subscriber, extracts the IP address of the UMS service provider, accesses the UMS application server 30, and calls the event notification message to the UMS application server 30 (calleventNotify). Transmit (S703).

The UMS application server 30 having received the call event notification message (calleventNotify) transmits a user call interaction creation message (createUICall) to the open gateway 20 for resource connection (S704), and then transmits and collects the information. When transmitting (sendInfoAndCollectReq) (S706), the open gateway 20 receives a user call interaction creation message (createUICall) and transmits an INAP message, the resource connection message (ConnectToResource) to the intelligent network service system 10, and then In response to the information delivery and collection message sendInfoAndCollectReq, a user information collection request message (PromptAndCollectUserInformation.req) is transmitted to the intelligent network service system 10 (S707).

Accordingly, the intelligent network service system 10 reproduces the voice message for subscriber authentication stored in the voice guidance device 40, for example, "Hello, please press the password." And sends it to the subscriber (S708-1), and authenticates the subscriber. When a digit corresponding to the number, for example, "1234" is input (S708-2), the intelligent network service system 10 transmits a user information collection response message (PromptAndCollectUserInformation.resp) including the digit information to the open gateway 20 ( S708-3).

Subsequently, when the open gateway 20 transmits the information transfer and collection response message (sendInfoAndCollectRes) including the information to the UMS application server 30, the UMS application server 30 is the subscriber based on the digits. After the authentication is performed, the subscriber confirms whether the subscriber is a registered subscriber based on the authentication result, and if the subscriber is a registered subscriber, an information transmission message including a message ID corresponding to the stored voice message to the subscriber ( sendInforeq).

The open gateway 20 receiving the information delivery message (sendInforeq) transmits an announcement message (PlayAnnouncement) including the message ID to the intelligent network service system 10 (S711), and thus the open gateway 20 On the basis of the message ID, the VMS 101 retrieves the voice message and reproduces and outputs the retrieved voice message to the subscriber (S712-1).

Then, the intelligent network service system 10 transmits a specialized resource report response (Specialized Resource Report) to report the successful announcement broadcast to the open gateway 20, the open gateway 20 transfers information to the UMS application server (30). Send a response message (sendInfoRes).

Thereafter, a similar procedure is repeated to allow the subscriber to listen to or manage the voice mailbox.

3-7 described above are examples of scenarios selected to illustrate the advantages of the present invention, which include forwarding a fax message by email, listening to the email by voice, notifying text and voice messages by voice message at a specified time, text Various scenarios can be realized with the function of UMS, such as faxing to fax.

In addition, in FIG. 3 to FIG. 7, it is assumed that the public network system is a wired intelligent network, and uses the INAP protocol for communication with the gateway. However, when the network system is a mobile network service system, MAP, CAP, WIN, and public Internet VOIP are used. In the case of a service system, since it can be applied to H.323, SIP, etc., it is equally applicable to the interaction method between the open gateway and the network system pursued by the present invention.

Accordingly, such conventional extension functions should be considered to be included in the technical scope of the present invention.

According to the present invention as described above, there is an advantage that the subscriber can use a richer service of the UMS service provider in the Internet environment, and from the standpoint of the UMS service provider, which is a separate operator, only the UMS service logic and subscriber DB have resources The advantage is that the service can be provided as it is, and the network provider has the advantage of increasing the profit and the utilization rate of the existing network resource due to the effect of increasing the profit and call generation rate through service hosting.

On the other hand, the present invention is not limited to the above-described embodiment, but can be modified and modified within the scope not departing from the gist of the present invention, such modifications and changes should be regarded as belonging to the following claims. will be.

Claims (8)

In the Unified Messaging Service (UMS) system that provides hosting services, A UMS application server comprising a service logic for providing a UMS service, a UMS database storing UMS service data and subscriber data for authentication, and a UMS web server for providing a UMS service to a user connected through a web; When the communication network accommodated by the user is connected, and the voice mail system (VMS), the fax mail system (FMS), the e-mail transmitter, the voice guide device, and the media converter are connected, the voice mail system (VMS) is requested. ), An intelligent network service system for controlling operations of a fax mailbox system (FMS), an e-mail transmitter, a voice guidance device, and a media converter; An open API technology comprising an open gateway connected to a plurality of UMS application servers through the Internet, and connected to the intelligent network service system to interface the intelligent network service system with the UMS application server. Apparatus for providing hosting service for a unified messaging system. The method of claim 1, The open gateway includes an INAP unit for processing an INAP protocol according to a connection with a wired network, another network protocol processing unit for processing another protocol, an OAM for operating management in the open gateway, and an external application server subscribed to the UMS service. A service DB that manages a list of users, a framework for authentication, authorization, and security, a call controller related to call control on multiple network protocols, and a call controller that provides abstract call control APIs to external service providers, and messaging on multiple networks. Integrates control functions and provides external service providers with message control functions that provide abstract message control, voice announcements and digits collection, and text prompting, to guide users through announcements or strings, or to respond to response strings or response voices. Can be etc A user interaction unit for collecting; Hosting service providing apparatus of the Unified Messaging service system using an open API technology, characterized in that it comprises an open API for matching with the UMS application server via the Internet. The method of claim 1, The intelligent network service system reports the UMS application to the UMS application server through the open gateway when the UMS service is requested from the user, and provides the UMS service to the user according to a request from the UMS application server. Hosting service providing apparatus of a unified messaging service system using open API technology. The method of claim 1, The intelligent network service system transmits the message ID according to the data storage in the VMS or the FMS to the UMS application server, and when the user requests message confirmation, the UMS application server transmits the message ID to the intelligent network service system. And the intelligent network service system extracts a message stored in the VMS or the FMS using the message ID and outputs the message stored in the VMS or the FMS to a user side terminal. In the hosting service providing method applied to the Unified Messaging Service (UMS) system connected to the intelligent network service system and the UMS application server through an open gateway, A first step of, when the UMS service is requested from the user to the subscriber through the intelligent network service system, the open gateway connects with the UMS application server to report a UMS service request to the subscriber; A second step of the UMS application server requesting resource connection and user information collection to the intelligent network service system through the open gateway; After the intelligent network service system makes a resource connection, it transmits a guide broadcast for collecting user information to the user, and if a digit corresponding to the user information is input from the user, the intelligent network service system transmits it to the UMS application server through the open gateway. A third process of doing; When the UMS application server requests to record a message, the intelligent network service system sends a guide broadcast for inputting a voice message to a user, and when the voice message is input from the user, stores it in a VMS, and stores the corresponding message ID. Hosting service providing method of a unified messaging service system using an open API technology, characterized in that it comprises a fourth step of delivering to the UMS application server. The method of claim 5, When the subscriber confirms that the subscriber registers the conversion into text data, the message is transmitted to the intelligent network service system through the open gateway, and the intelligent network service system transmits the message conversion command. A method of providing a hosting service of a unified messaging service system using an open API technology, comprising: extracting a voice message stored in a VMS using a message ID, converting the voice message into text data, and transmitting the same to a text output device. . In the hosting service providing method applied to the Unified Messaging Service (UMS) system connected to the intelligent network service system and the UMS application server through an open gateway, A first step of, when the UMS service is requested from the subscriber through the intelligent network service system, the open gateway accesses the UMS application server and reports the subscriber's UMS service request; A second step of the UMS application server requesting resource connection and user information collection to the intelligent network service system through the open gateway; After the intelligent network service system makes a resource connection, it transmits a guide broadcast for collecting user information to the user, and if a digit corresponding to user authentication information is input from the subscriber, the intelligent network service system sends the announcement to the UMS application server through the open gateway. Transmitting a third process; A fourth step of performing, by the UMS application server, a user authentication procedure based on the digit, and then transmitting a message ID for a voice message stored to the subscriber to the intelligent network service system if the subscriber is a registered subscriber; And a fifth process of the intelligent network service system extracting the voice message according to the message ID from the VMS, reproducing it, delivering it to the subscriber, and reporting the voice message delivery to the UMS application server. Hosting service providing method of unified messaging service system using API technology. In the hosting service providing method applied to the Unified Messaging Service (UMS) system connected to the intelligent network service system and the UMS application server through an open gateway, When a subscriber connected to the UMS application server via the Internet requests delivery of a text message while specifying a delivery time and a destination number, the subscriber stores the text message, and when the delivery time is reached, the intelligent network through the open gateway. Requesting a call to the called number by the service system; A second step of instructing a conversion of the text data into a voice message while transmitting the stored text data to the intelligent network service system when the called party answers the call; A third step of the intelligent network service system converting the text data into a voice message, transmitting the text data to a terminal of the called number, and then reporting the voice message transmission to the UMS application server; And a fourth step of the UMS application server requesting the release of the call to the intelligent network service system through the open gateway.