WO2008020661A1

WO2008020661A1 - Method and apparatus for providing multiring service

Info

Publication number: WO2008020661A1
Application number: PCT/KR2006/003253
Authority: WO
Inventors: Tae-Hwan Weon
Original assignee: Eluon Corporation
Priority date: 2006-08-18
Filing date: 2006-08-18
Publication date: 2008-02-21

Abstract

The present invention relates to method and apparatus for providing a multiring including sound source and called party message pre-established by a user of a called terminal to a call connection service of a calling terminal. The present invention receives a first call connection request signal from a calling-side switching center, transmits a first call connection answer signal corresponding to the first call connection request signal to the calling-side switching center, transmits a second call connection request signal a multiring service server, and receives a second call connection answer signal corresponding to the second call connection request signal from the multiring service server.

Description

METHOD AND APPARATUS FOR PROVIDING MUTIRING

SERVICE

Technical Field

[1] The present invention relates to method and apparatus for providing a call connection service that outputs a sound source, pre-established by a user of a called terminal, to a speaker of a calling terminal and at the same time, outputs a called party message pre-established by the user of the called terminal to a display of the calling terminal during a call standby state, when the calling terminal makes a call to the called terminal. Background Art

[2] Subscribers have established and used their unique bell sounds as ring tones in accordance with an increase of a mobile communication subscriber and a development of a portable terminal. Also, mobile communication companies have improved the existing standardized ring back tone mode to provide a particular sound registered and selected by a called subscriber instead of the existing ringback tone to a calling party by using a service for providing sounds for substituting ringback tones. The existing service for providing sounds for substituting ringback tones will be described in detail.

[3] FIG. 1 is a signal flow diagram in a conventional mobile communication network for implementing a service for providing sounds for substituting ringback tones.

[4] Referring to FIG. 1, when a calling terminal attempts to communicate with a called terminal of a called party subscribing to a service for providing sounds for substituting ringback tones, a calling-side switching center transmits a location request to a home location register (HLR) (step 101). The home location register answers the location request from the calling-side switching center to transmit a routing request to a called- side switching center (step 103). The called-side switching center answers the routing request received from the home location register to transmit a temporary local directory number (TLDN) to the home location register (step 105). Thereafter, the home location register uses the received temporary local directory number to transmit a called location information answer signal to the calling-side switching center (step 107).

[5] The calling-side switching center transmits an ISUP call connection request signal to the called-side switching center based on the temporary local directory number (step 109). The called-side switching center answers the ISUP call connection request signal transmitted from the calling-side switching center to extract service setup information for providing the sounds for substituting the ringback tones pre-stored in a storage and then to to transmit the ISUP call connection request signal to a sound source providing apparatus by using the temporary local directory number corresponding to an apparatus for providing a pre-stored sound source when a user corresponding to a called terminal subscribes to the service for providing the sounds for substituting the ringback tones (step 111). At this time, the ISUP call connection request signal includes a called terminal identifier and a calling terminal identifier. A speech path is established between the calling-side switching center, the called-side switching center, and the sound source providing apparatus according to the performance of the steps.

[6] The sound source providing apparatus asks a sound source providing control server for a sound source code based on the called terminal identifier received (step 113). The sound source providing control server answers the sound code request signal to search the stored sound code corresponding to the called terminal identifier and then to transmit the searched sound code to an apparatus for providing a sound code (step 115). Thereafter, the sound source providing apparatus transmits the sounds for substituting the ringback tones corresponding to the sound code received from the sound source providing apparatus to the calling-side switching center through the speech path (step 117). If the called-side switching center recognizes that the called terminal is in an answer state during the transmission of the sounds for substituting the ringback tones to the calling-side switching center, it asks the sound source providing apparatus for the ISUP call disconnection (step 119). The sound source providing apparatus receives the ISUP call disconnection request signal from the called-side switching center and then disconnects the speech path established to the called-side switching center. Thereafter, the called terminal uses the speech path established to the calling terminal to perform a normal call (step 121).

[7] The user of the called terminal uses the service for providing the sounds for substituting the ringback tones to substitute the existing standardized ringback tones, making it possible to let the user hear the sounds for substituting the ringback tones directly selected by the user. The reason why the service for providing the sounds for substituting the ringback tones commercially succeeds in a market is that it satisfies, to some degree, modern consumer s desires to express their personality.

[8] However, the service for providing the sounds for substituting the ringback tones has a disadvantage that the user of the calling terminal does not show multimedia messages such as a character, an animation, a v-card, a name card, a short message or an avatar established by the user of the called terminal, etc. As there are various commercialized multimedia message services and a commercialized speakerphone function of a mobile terminal, a need is raised to provide a call connection service using the visual and auditory senses other than the service for providing the sounds for substituting the existing auditory ringback tones. Disclosure of Invention

Technical Problem

[9] The present invention proposes to solve the problems. It is an object of the present invention to provide method and apparatus simultaneously outputting a sound source and a message, pre-established by a user of a called terminal, to the speaker and display of a calling terminal.

[10] It is an object of the present invention to allow a user of a calling terminal to provide various call connections services other than a service for providing sounds for substituting ringback tones depending on an existing auditory sense prior to an answer of a called terminal.

[11] It is an object of the present invention to reduce transmission traffic by outputting a called party message stored in a memory of a calling terminal to a display of the calling terminal when the calling terminal attempts to call a called terminal again after attempting to call the called terminal twice. Technical Solution

[12] In order to accomplish the objects, according to one aspect of the present invention, there is provided a method for providing a multi ring service during a call standby state in a called terminal switching center, which manages at least one called terminal and is coupled to a multiring service server including multiring information corresponding to a calling-side switching center managing at least one calling terminal, a home location register, and the called terminal, the method comprising the steps of: receiving a first call connection request signal from the calling-side switching center, the first call connection request signal being generated corresponding to a called location information answer signal from the home location register and including at least multiring service identifier, the called location information answer signal being received by the calling-side terminal, the multiring service identifier including a called party message serial number corresponding to a called party message when there is a pre-stored called party message in the memory of the calling terminal; transmitting the first call connection answer signal corresponding to the first call connection request signal to the calling-side switching center; transmitting a second call connection request signal to the multiring service server, the second call connection signal including the at least multiring service identifier; and receiving a second call connection answer signal corresponding to the second call connection request signal from the multiring service server, wherein the multiring service server transmits the pre-stored called party message and the called party message serial number cor responding to the called terminal to the calling terminal via the message service center when the multiring service identifier included in the second call connection request signal does not include the called party message serial number or the called party message serial number included in the multi-ring service identifier does not correspond to the pre-stored called party message serial number corresponding to the current called terminal; does not transmit the called party message when the called party message serial number included in the multiring service identifier corresponds to the pre-stored called party message serial number corresponding to the current called terminal; and transmits a pre-stored sound source corresponding to the called terminal, which substitutes the existing ringback tone, to the calling terminal through a speech path established between the calling-side switching centers, based on the multiring service identifier included in the second connection request signal, wherein the calling terminal outputs the sound source to an external speaker in a call standby state and at the same time, stores the called party message and the called party message serial number in the memory of the calling terminal when the called party message and the called party message serial number from the multiring service server are transmitted; and outputs the called party message stored in the calling terminal to a display of the calling terminal when the called party message and the called party message serial number are not transmitted from the multiring service server.

[13] In one preferred embodiment, it further comprises the steps of: when the called terminal answers a call, transmitting a call disconnection request signal to the multiring service server; and receiving the call disconnection request answer signal from the multiring service server, the speech path connected to the multiring service server being disconnected by the call disconnection request signal and the call disconnection request answer signal. Also, the calling terminal transmits a call request signal including at least calling terminal identifier and called terminal identifier to the calling- side switching center. Further, the speech path is established by means of the first call connection request signal and the second call connection request signal. In addition, the called party message is any one of a short message and a multimedia message. Moreover, the sound source and called party message are pre-established through any one of an internet and a wire/wireless communication by means of a user corresponding to the called terminal. Also, the message service center is included in the multiring service server.

[14] According to another aspect of the present invention, there is provided a method for providing a multi ring service during a call standby state in a multiring service server coupled to a calling-side switching center managing at least one calling terminal, a called-side switching center managing at least one called terminal, and a home location register, the method comprising the steps of: receiving a second call connection request signal from the called-side switching center, the second call connection request signal corresponding to a first call connection request signal received from the called-side switching center in the called-side switching center, the first and second call request signals including at least multiring service identifier, the at least multiring service identifier including a called party message serial number corresponding to a called party message when there is a pre-stored called party message in the memory of the calling terminal; transmitting the first call connection answer signal corresponding to the first call connection request signal to the calling-side switching center; transmitting a second call connection answer signal corresponding to the second call connection request signal to the called-side switching center; extracting the pre-stored sound source and called party message by using the multiring service identifier included in the second call connection signal, the called message including the called party message serial number corresponding to the called party message; judging whether the called party message serial number included in the multiring service identifier included in the second call connection request signal corresponds to the pre-stored called party serial number corresponding to the current called terminal; and, transmitting the pre- stored called party message and the called party message serial number corresponding to the called terminal to the calling terminal via the message service center when the multiring service identifier included in the second call connection request signal does not include the called party message serial number or the called party message serial number included in the multi-ring service identifier does not correspond to the pre- stored called party message serial number corresponding to the current called terminal, not transmitting the called party message when the called party message serial number included in the multiring service identifier corresponds to the pre-stored called party message serial number corresponding to the current called terminal, and transmitting a pre-stored sound source corresponding to the called terminal, which substitutes the existing ringback tone, to the calling terminal through a speech path established between the calling-side switching centers, based on the multiring service identifier included in the second connection request signal, wherein the calling terminal outputs the sound source to an external speaker in a call standby state and at the same time, stores the called party message and the called party message serial number in the memory of the calling terminal when the called party message and the called party message serial number from the multiring service server are transmitted; and outputs the called party message stored in the calling terminal to a display of the calling terminal when the called party message and the called party message serial number are not transmitted from the multiring service server.

[15] According to another aspect of the present invention, there is provide a called-side switching center for providing a multi ring service during a call standby state, which manages at least one called terminal and is coupled to a multiring service server including multiring information corresponding to a calling-side switching center managing at least one calling terminal, a home location register, and the called terminal, the called-side switching center comprising: a means for receiving a first call connection request signal from the calling- side switching center, the first call connection request signal being generated corresponding to a called location information answer signal from the home location register and including at least multiring service identifier, the called location information answer signal being received by the calling-side terminal, the multiring service identifier including a called party message serial number corresponding to a called party message when there is a pre-stored called party message in the memory of the calling terminal; a means for transmitting the first call connection answer signal corresponding to the first call connection request signal to the calling-side switching center; a means for transmitting a second call connection request signal to the multiring service server, the second call connection signal including the at least multiring service identifier; and a means for receiving a second call connection answer signal corresponding to the second call connection request signal from the multiring service server, wherein the multiring service server transmits the pre-stored called party message and the called party message serial number corresponding to the called terminal to the calling terminal via the message service center when the multiring service identifier included in the second call connection request signal does not include the called party message serial number or the called party message serial number included in the multi-ring service identifier does not correspond to the pre-stored called party message serial number corresponding to the current called terminal; does not transmit the called party message when the called party message serial number included in the multiring service identifier corresponds to the pre-stored called party message serial number corresponding to the current called terminal; and transmits a pre-stored sound source corresponding to the called terminal, which substitutes the existing ringback tone, to the calling terminal through a speech path established between the calling-side switching centers, based on the multiring service identifier included in the second connection request signal, wherein the calling terminal outputs the sound source to an external speaker in a call standby state and at the same time, stores the called party message and the called party message serial number in the memory of the calling terminal when the called party message and the called party message serial number from the multiring service server are transmitted; and outputs the called party message stored in the calling terminal to a display of the calling terminal when the called party message and the called party message serial number are not transmitted from the multiring service server.

[16] According to another aspect of the present invention, there is provided a multiring service sever for providing a multi ring service during a call standby state by being coupled to a calling-side switching center managing at least one calling terminal, a called-side switching center managing at least one called terminal, and a home location register, the multiring service server comprising: a means for receiving a second call connection request signal from the called-side switching center, the second call connection request signal corresponding to a first call connection request signal received from the called-side switching center in the called-side switching center, the first and second call request signals including at least multiring service identifier, the at least multiring service identifier including a called party message serial number corresponding to a called party message when there is a pre-stored called party message in the memory of the calling terminal; a means for transmitting the first call connection answer signal corresponding to the first call connection request signal to the calling- side switching center; a means for transmitting a second call connection answer signal corresponding to the second call connection request signal to the called-side switching center; a means for extracting the pre-stored sound source and called party message by using the multiring service identifier included in the second call connection signal, the called message including the called party message serial number corresponding to the called party message; a means for judging whether the called party message serial number included in the multiring service identifier included in the second call connection request signal corresponds to the pre-stored called party serial number corresponding to the current called terminal; and, a means for transmitting the pre-stored called party message and the called party message serial number corresponding to the called terminal to the calling terminal via the message service center when the multiring service identifier included in the second call connection request signal does not include the called party message serial number or the called party message serial number included in the multi-ring service identifier does not correspond to the pre- stored called party message serial number corresponding to the current called terminal, not transmitting the called party message when the called party message serial number included in the multiring service identifier corresponds to the pre-stored called party message serial number corresponding to the current called terminal, and transmitting a pre-stored sound source corresponding to the called terminal, which substitutes the existing ringback tone, to the calling terminal through a speech path established between the calling-side switching centers, based on the multiring service identifier included in the second connection request signal, wherein the calling terminal outputs the sound source to an external speaker in a call standby state and at the same time, stores the called party message and the called party message serial number in the memory of the calling terminal when the called party message and the called party message serial number from the multiring service server are transmitted; and outputs the called party message stored in the calling terminal to a display of the calling terminal when the called party message and the called party message serial number are not transmitted from the multiring service server.

[17] According to another aspect of the present invention, there is provided a called-side switching center for providing a multi ring service during a call standby state, which manages at least one called terminal and is coupled to a multiring service server including multiring information corresponding to a calling-side switching center managing at least one calling terminal, a home location register, and a called terminal, the called-side switching center comprising: a memory storing a program; and a processor coupled to the memory to run the program, wherein by means of the program, the processor receives a first call connection request signal from the calling- side switching center, the first call connection request signal being generated corresponding to a called location information answer signal from the home location register and including at least multiring service identifier, the called location information answer signal being received by the calling-side terminal, the multiring service identifier including a called party message serial number corresponding to a called party message when there is a pre-stored called party message in the memory of the calling terminal; transmits the first call connection answer signal corresponding to the first call connection request signal to the calling-side switching center; transmits a second call connection request signal to the multiring service server, the second call connection signal including the at least multiring service identifier; and receives a second call connection answer signal corresponding to the second call connection request signal from the multiring service server, wherein the multiring service server transmits the pre-stored called party message and the called party message serial number corresponding to the called terminal to the calling terminal via the message service center when the multiring service identifier included in the second call connection request signal does not include the called party message serial number or the called party message serial number included in the multi-ring service identifier does not correspond to the pre-stored called party message serial number corresponding to the current called terminal, does not transmit the called party message when the called party message serial number included in the multiring service identifier corresponds to the pre-stored called party message serial number corresponding to the current called terminal, and transmits a pre-stored sound source corresponding to the called terminal, which substitutes the existing ringback tone, to the calling terminal through a speech path established between the calling-side switching centers, based on the multiring service identifier included in the second connection request signal, wherein the calling terminal outputs the sound source to an external speaker in a call standby state and at the same time, stores the called party message and the called party message serial number in the memory of the calling terminal when the called party message and the called party message serial number from the multiring service server are transmitted; and outputs the called party message stored in the calling terminal to a display of the calling terminal when the called party message and the called party message serial number are not transmitted from the multiring service server.

[18] According to another aspect of the present invention, there is provided a multiring service sever for providing a multi ring service during a call standby state by being coupled to a calling-side switching center managing at least one calling terminal, a called-side switching center managing at least one called terminal, and a home location register, the multiring service server comprising: a memory storing a program; and a processor coupled to the memory to run the program, wherein by means of the program, the processor receives a second call connection request signal from the called-side switching center, the second call connection request signal corresponding to a first call connection request signal received from the called-side switching center in the called-side switching center, the first and second call request signals including at least multiring service identifier, the at least multiring service identifier including a called party message serial number corresponding to a called party message when there is a pre-stored called party message in the memory of the calling terminal; transmits the first call connection answer signal corresponding to the first call connection request signal to the calling-side switching center; transmits a second call connection answer signal corresponding to the second call connection request signal to the called-side switching center; extracts the pre-stored sound source and called party message by using the multiring service identifier included in the second call connection signal, the called message including the called party message serial number corresponding to the called party message; judgs whether the called party message serial number included in the multiring service identifier included in the second call connection request signal corresponds to the pre-stored called party serial number corresponding to the current called terminal; and, transmits the pre-stored called party message and the called party message serial number corresponding to the called terminal to the calling terminal via the message service center when the multiring service identifier included in the second call connection request signal does not include the called party message serial number or the called party message serial number included in the multi-ring service identifier does not correspond to the pre-stored called party message serial number corresponding to the current called terminal, does not transmit the called party message when the called party message serial number included in the multiring service identifier corresponds to the pre-stored called party message serial number corresponding to the current called terminal, and transmits a pre-stored sound source corresponding to the called terminal, which substitutes the existing ringback tone, to the calling terminal through a speech path established between the calling-side switching centers, based on the multiring service identifier included in the second connection request signal, wherein the calling terminal outputs the sound source to an external speaker in a call standby state and at the same time, stores the called party message and the called party message serial number in the memory of the calling terminal when the called party message and the called party message serial number from the multiring service server are transmitted; and outputs the called party message stored in the calling terminal to a display of the calling terminal when the called party message and the called party message serial number are not transmitted from the multiring service server.

Advantageous Effects

[19] The present invention can provide various call connection services that simultaneously outputs sound source and message pre-established by a user of a called terminal to the speaker and display of a calling terminal.

[20] The present invention has an effect that a user of a calling terminal can judge whether there is a misconnection prior to the answer of the calling terminal and a user of a called terminal can express his/her unique sound source and message to the user of the calling terminal in a call standby state.

[21] The present invention has an effect that the calling terminal can reduce transmission traffic by outputting a called party message stored in a memory of the calling terminal to a display of the calling terminal when the calling terminal attempts to call a called terminal again after attempting to call the called terminal twice. Brief Description of the Drawings

[22] FIG. 1 is a signal flow diagram in a conventional mobile communication network for implementing a service for providing sounds for substituting ringback tones;

[23] FIG. 2 schematically shows a block constitution view of an apparatus for providing a call connection service according to one preferred embodiment of the present invention;

[24] FIG. 3 is a flow chart for explaining a multiring service providing procedure according to one preferred embodiment of the present invention;

[25] FIG. 4 is a flow chart showing a multiring service providing procedure according to one preferred embodiment of the present invention;

[26] FIG. 5 is a signal flow diagram showing a multiring service providing procedure according to one preferred embodiment of the present invention;

[27] FIG. 6 is a constitution view showing a multiring service server according to one preferred embodiment of the present invention;

[28] FIG. 7 is a constitution view of a multiring service server module according to one preferred embodiment of the present invention;

[29] FIG. 8 is block view showing a constitution of a calling terminal according to one preferred embodiment of the present invention;

[30] FIG. 9 is a flow chart showing a multiring service receiving procedure from a calling terminal according to one preferred embodiment of the present invention; and

[31] FIGS. 10 and 11 are exemplification views of a screen of a calling terminal in a receive state of a multiring service according to one preferred embodiment of the present invention. Best Mode for Carrying Out the Invention

[32] Hereinafter, preferred embodiment of present invention will be described with reference to the accompanying drawings.

[33] FIG. 2 schematically shows a block constitution view of an apparatus for providing a call connection service according to one preferred embodiment of the present invention.

[34] Referring to FIG. 2, an apparatus for providing a call connection tone service of the present invention comprises a calling-side switching center 201, a called-side switching center 203, a multiring service server 205, a message service center 207, a calling terminal 209, a called terminal 211, a personal computer 215, and a wire/ wireless phone 219.

[35] The calling-side switching center 201 has all the functions of existing network components. The calling-side switching center 201 receives pre-established multiring service subscription information and stores it by communicating with a home location register upon registering the location of the called terminal and then performs a funct ion of transmitting a call connection request signal to the called switching center 203. The called-side switching center 203 includes a function of transmitting the call connection request signal to the multiring service server 205 in addition to the existing functions of receiving the call connection request signal from the calling switching center 201 and then transmitting the call connection request signal to the called terminal 211.

[36] The multiring service server 205 receives the call connection request signal including a identifier of the called terminal from the called-side switching center 203 to transmit a sound source pre-established by a user of the called terminal 211 to the calling terminal 209. The multiring service server 205 performs a function of transmitting a called party message established by the user to the message service center 207. The message service center 207 comprises an existing short message service center and a multimedia message service center. The message service center 207 performs a function of receiving a short message or a multimedia message from the multirng service server 205 to transmit them to the calling terminal 209 during a call standby state.

[37] The calling terminal 209 requests a call for the called terminal 211 and performs a function of outputting the sound source and message provided from the multiring service server 205 to the speaker and display before the called terminal 211 answers a call.

[38] A method for providing a call connection service according to one preferred embodiment of the present invention will be schematically described with reference to the above constitution.

[39] First, the user of the called terminal 211 accesses the multiring service server 205 through an internet 213 with the personal computer 215 or the wire/wireless communication network 219 with the wire/wireless phone 217 to subscribe to the call connection service according to the present invention and then to establish and store the sound source and called party message to be transmitted to the calling terminal in a call standby state.

[40] Thereafter, when the calling terminal 201 attempts to make a call to the called terminal 211, the calling-side switching center 201 queries the home location register about the called location and then transmits the call connection request signal to the called-side switching center 203. The called-side switching center 203 receiving the call connection request signal responds thereto to transmit the call connection answer signal to the calling-side switching center 201. Thereafter, the called-side switching center 203 transmits the call connection request signal to the called terminal 211 and also transmits the call connection request signal to the multiring service server 205.

[41] When the multiring service server 205 receiving the call connection request signal responds thereto to transmit the call connection answer signal to the called-side switching center 203, a speech path is established between the calling-side switching center 201 and the multiring service server 205. At this time, the multiring service server 205 extracts the sound source and called party message pre-stored by the user of the called terminal 211 to transmit them to the calling-side switching center 201 through the speech path. At this time, the called party message includes the short message and the multimedia message and transmits them to the calling-side switching center via the message service center. The calling-side switching center 201 transmits the received sound source and called party message to the calling terminal 209 and the user of the calling terminal 209 can simultaneously see and hear the sound source and message through the speaker and display. At this time, the user compares a calling party number and a called party number included in the called party message with a called party/calling party number of a call in a current call standby state to judge whether they are included in the same call. If they are not included in the same call, the message is not output on a screen.

[42] Thereafter, when the called terminal 211 answers a call, the called-side switching center 203 transmits a call disconnection request signal to the multiring service server 205 to disconnect the speech path between the called-side switching center 203 and the multiring service server 205 and to perform a normal call between the calling terminal 209 and the called terminal 211.

[43] When the user of the calling terminal 209 makes a call to the called terminal registered in the service of the present invention through the processes, the user of the called terminal 211 can simultaneously see and hear the sound source and called party message pre-established by the user before the called terminal 211 answers a call. At this time, the sound source can be heard through the speaker of the calling terminal 210 and the called party message can be seen through the display of the calling terminal 201. Therefore, the user of the calling terminal 209 can receive the call connection service using the visual and auditory senses other than the service for providing the sounds for substituting the monotonous ringback tones. In the specification, the call connection service is referred to as the multiring service.

[44] FIG. 3 is a flow chart for explaining a multiring service providing procedure according to one preferred embodiment of the present invention.

[45] Referring to FIG. 3, in a step 301 the user of the called terminal accesses the multiring service server through the wire/wireless communication network to subscribe to the service and then to establish the multiring to be provided to the calling terminal calling the user during a call standby state. The multiring includes the sound source to be output through the speaker of the calling terminal and the message to be output through the display of the calling terminal. Thereafter, in a step 303 when the calling terminal makes a call to the called terminal, the calling-side switching center asks the home location register for the called location information request signal. The home location register grasps the location of the called terminal to answer the called location information request. At this time, the called location information includes the service identifiers according to the present invention. The calling-side switching center uses the called location information to transmit the call connection request signal to the called-side switching center and the called-side switching center transmits the call connection request signal to the multiring service server.

[46] In a step 305 the multiring service server transmits the sound source and message pre-established by the user of the called terminal to the calling terminal and the calling terminal simultaneously outputs the sound source and message received to the speaker and display of the terminal, instead of the existing call connection tone. In a step 307 when the called terminal answers a call, the multiring service server stops a multiring transmission and the calling terminal and the called terminal perform a normal call. [47] FIG. 4 is a flow chart showing a multiring service providing procedure according to one preferred embodiment of the present invention.

[48] Referring to FIG. 4, in a step 401 when the user of the calling terminal uses the calling terminal to attempt to make a call to the called terminal, the calling-side switching center asks the home location register for the called location information. The home location register grasps the location of the called terminal to answer the called location information request. At this time, the home location register judges whether the called terminal is registered in the call connection tone service according to the present invention (step 403). If so, a step 407 is performed and if not, a step 405 is performed.

[49] In the step 407, the multiring service server transmits the sound source and message pre-established by the user of the called terminal, which substitute the existing ringback tone, to the calling terminal. At this time, the calling terminal simultaneously outputs the sound source and message received to the speaker and display of the terminal to inform the user of the calling terminal that the called terminal is in a call connection state. In the step 405, if the called terminal is not registered in the service of the present invention, the calling-side switching center transmits the general ringback tones according to the existing mode to the calling terminal.

[50] Thereafter, if the user of the called terminal senses a call to open a flip of the called terminal or to press a call button so that he/she answers the call (step 409), the multiring service server stops the transmission of the sound source and message and performs a normal call between the calling terminal and the called terminal (step 411).

[51] FIG. 5 is a signal flow diagram showing a multiring service providing procedure according to one preferred embodiment of the present invention.

[52] Referring to FIG. 5, when there is a call request from the calling terminal, the calling-side switching center transmits the called location information request signal for querying the home location register about the location of the called terminal (step 501). The home location register answers the called location information request to transmit the called location information answer signal to the calling-side switching center (step 503). Thereafter, the calling-side switching center uses the called location information answer returned to transmit the call connection request signal to the called switching center (step 505). The call connection request signal includes the calling terminal identifier, the called terminal identifier, and the service subscription information according to the present invention. The called switching center answers the call connection request signal received from the calling-side switching center to return the call connection answer signal to the calling-side switching center (step 507).

[53] Thereafter, the called-side switching center uses the called terminal identifier and the service subscription information to transmit the call connection request signal to the multiring service server (step 509). The multiring service server answers the call connection request signal to transmit the call connection answer signal to the called- side switching center (step 511). When the called-side switching center receives the call connection answer, the speech path is established between the calling-side switching center and the multiring service server (step 513).

[54] The multiring service server uses the called terminal identifier and the service setup information simultaneously with the establishment of the speech path to extract the pre-stored sound source corresponding to the called terminal and then to transmit the extracted sound source to the calling-side switching center through the speech path (step 515). At the same time, the multiring service server transmits the called party message pre-established by the user of the called terminal to the message service server (step 517) and the message service center transmits the called party message to the calling-side switching center (step 519). Herein, the called party message is any one of the short message and the multimedia message, and may include the serial number corresponding to the called party message. When the called party message is the short message, if the called party message exceeds the capacity of the short message, the multiring service server divides the called party messages to be conformed to the capacity of the short message and sequentially transmits the divided short messages to the calling terminal. The calling terminal combines the short messages received to output them to the display. At this time, the calling terminal can stably receive the called party messages since the call channel is opened between the calling terminal and the calling-side switching center in a call standby state. Also, when the called message is the multimedia message, the calling terminal receives the called party message by means of a general multimedia messaging service transmission mode.

[55] Through the steps 515 to 519, the calling terminal substitutes the existing ringback tones so that it can simultaneously receive the sound source and called party message established by the called party as the call connection service. Thereafter, if the called terminal answers a call (step 521), the called-side switching center transmits the call disconnection request signal to the multiring service server to disconnect the speech path between it and the mutiring service server and to perform a normal call between the calling terminal and the called terminal (step 523).

[56] Thereafter, when the calling terminal attempts to make a call to the same called terminal again, a method for reducing transmission traffic will be described.

[57] The calling terminal stores the called party message and the serial number in the memory. In order for the calling terminal to attempt to make a call to the called terminal that had attempted to call before, when the call button of the calling terminal is pressed, the called terminal telephone number including the serial number is transmitted to the calling-side switching center. The serial number is carried on an unused field of the access channel between the calling terminal and a base station so that it is transmitted from the calling terminal to the calling-side switching center. Thereafter, the steps 501 to 515 are performed again. At this time, in the steps 505 and 509 the call connection request signal includes the calling terminal identifier, the called terminal identifier, and the serial number. The serial number is carried and transmitted on the unused field of the ISUP between the calling-side switching center and the called-side switching center and the called-side switching center and the multiring service server. The multiring service server compares the received serial number with the currently established called party message. If they match with each other, the multring service server does not transmit the called party message and therefore, the steps 517 and 519 may be omitted. At this time, the calling terminal outputs the called party message corresponding to the serial number stored in its memory, making it possible to reduce the transmission traffic.

[58] FIG. 6 is a constitution view showing a multiring service server according to one preferred embodiment of the present invention.

[59] Referring to FIG. 6, the multiring service server may comprise a memory system

620, at least one central processing unit (CPU) 610 coupled to the memory system to perform a high speed operation, an input device 630, and a communication device 640.

[60] The central processing unit 610 comprises an arithmetic logic unit (ALU) 612 for performing calculation, a register 614 for temporally storing data and instructions, and a controller 616 for controlling an operation of a simulation server. The central processing unit 610 may be a processor having various architectures, such as Alpha from Digital Co., MIPS from MIPS technology, NEC, IDT, Siemens, etc., x86 from Intel Cyrix, AMD, Nexgen, etc., and Power PC from Motorola.

[61] The memory system 620 comprises a high-speed main memory 622 in a storage medium form such as a random access memory (RAM) and a read only memory (ROM), an auxiliary memory 624 in a long-term storage medium form such as a floppy disk, a hard disk, a tape, a CD-ROM, a flash memory, etc., and a device for storing data using electric, magnetic, optical or other storage medium. Also, the main memory 622 may comprise a video display memory for displaying an image through the display device.

[62] Also, the input device 630 comprises a keyboard, a mouse, etc. The mouse may include a physical transducer such as, for example, a touch screen or a microphone. The communication device 640 comprises a communication interface for performing communication with the calling terminal, the message service center, etc.

[63] FIG. 7 is a constitution view of a multiring service server module according to one preferred embodiment of the present invention. [64] Referring to FIG. 7, the multiring service server may comprise a transmission and reception processing module 732 for processing communication with the calling terminal, the message service center, etc., a ringback tone processing module 734 establishing the sound source corresponding to the called terminal and providing the call connection tone to the calling terminal, and a called party message processing module 736 establishing and managing the called party message corresponding to the called terminal and transmitting the message to the calling terminal upon connecting a call. The entire constitution of the multiring service server according to one preferred embodiment of the present invention will be described below with reference to such application modules.

[65] The multiring service server may use various operating systems (OS) as an OS.

Such an OS provides high level instructions to an application program interface 700 (API) to control operations of the respective application modules 730.

[66] The multiring service server identifies the respective application modules 730 in question according to the high level instructions provided from the API 700 and comprises a high level instruction processor 710 decoding the high level instructions to provide them to the corresponding module. An application module controller 720 controls the operations of the application modules 730 according to the instructions provided from the high level instruction processor 710. In other words, the high level instruction processor 710 identifies whether there are the corresponding application modules 730 according to the high level instructions provided through the API 700. If there are the corresponding application modules 730, the high level instruction processor 710 decodes them using the recognizable instructions in the corresponding application modules 730 to transmit them the corresponding mapping unit or to control the message transmission. Herein, the application modules 730 comprise the transmission and reception processing module 732, the ringback tone processing module 734, and the called party message processing module 736. The application module controller 720 comprises mapping units 721, 723, and 725 and interface units 722, 724, and 726 for the respective application modules.

[67] The transmission and reception processing module mapping unit 721 receives the high level instructions from the high level instruction processor 710 for performing the communication with the message service center and the calling terminal, etc., to map them to the device level instructions capable of being processed in the transmission and reception process module 732 and to provide them to the transmission and reception process module 732 through the transmission and reception processing module interface unit 722.

[68] The ringback tone processing module 734 is a unit that stores the sound source corresponding to the called terminal and provides the sound source stored in the calling terminal as the sounds for substituting the ringback tone upon connecting a call. In other words, the ringback tone processing module mapping unit 723 receives the high level instructions for providing the service for providing the sounds for substituting the ringback tones from the high level instruction processor 710 to map them to device level instructions capable of being recognized by the ringback tone processing module 724 and to provide them to the ringback tone processing module 734 through the ringbacktone processing module interface unit 724.

[69] The called party message processing module 736 is a unit that stores the called party message established by the user of the called party terminal in a particular region of the storage to transmit the called party message to the calling terminal in a call standby state. In other words, the called party message processing module mapping unit 725 receives the high level instructions for transmitting the called party message to the calling terminal from the high level instruction processor 710 in a call standby state to map them to the device level instructions capable of being recognized by the called party message processing module 736 and to provide them to the called party message processing module 736 through the called party message processing module interface unit 726.

[70] FIG. 8 is block view showing a constitution of a calling terminal according to one preferred embodiment of the present invention.

[71] Referring to FIG. 8, the calling terminal to which the present invention is applied comprises a controller (CPU) 801, a key inputting unit 803 controlled by the controller 801 and performing an input of various functions and operations of the called terminal, a display 805, a memory 807, and a voice processor 809, a speaker 811 amplifying an analog signal output from the voice processor 809 and converting and outputting it into sound pressure audible to a person, a microphone 813 sensing a user s voice to inform the voice processor 809 of it and a transceivers 15.

[72] The controller 801 receives a signal processed in the transceiver 815 and controls the entire operation of the calling terminal. Also, when attempting to make a call to the called terminal according to one embodiment of the present invention to convert it into a call standby state and receiving the multiring from the multiring service server, the controller performs a control to be able to output the sounds for substituting the ringback tones to the speaker 811 and at the same time, to output the called party message to the display 805. And, the controller performs a control of various components provided.

[73] The display 805 is a display device such as a liquid crystal display (LCD), etc. The display is controlled by the controller 801 to display the state of the terminal or the progress situation of the program. In other words, it displays the entire state of the calling terminal and the input user information, etc. Also, it further includes a function of outputting the called party message received in a call standby state by attempting to make a call to the called terminal.

[74] The memory 807 stores an operating program of the controller 801 and a system program, wherein the operating program or the system program is usually stored in a ROM region and can be erased if necessary. As an electrically erasable ROM, there are an EEPROM, a flash memory, etc. And, the memory 807 comprises a RAM for temporally storing data generated during running several operating programs. The memory further includes a function of storing the called party message and serial number received from the multiring service server.

[75] The voice processor 809 modulates voice signals input from the microphone 813 to convert them into voice data and demodulates the voice data input from the transceiver 815 and the voice data stored in the memory into the voice signals to output them as a voice through the speaker 811.

[76] The speaker 811 further includes a function of outputting the sound source established by the user of the called terminal, which substitutes the existing ringback tones, to the external in a call standby state according to the present invention, in addition to the existing function of outputting the voice received through the transceiver 815 and the sound source stored in the terminal to the external.

[77] The transceivers 15 is controlled by the controller 801 and converts signals output from the controller into wireless signals. Also, the transceiver 815 converts the wireless signals received through an antenna to outputs them into desired signals.

[78] When such a calling terminal makes a call to the called terminal according to one embodiment of the present invention, the calling terminal is controlled by the controller 801 so that it is converted into a call standby state. The user of the calling terminal cannot transmit a voice and can hear only the ringback tones provided form the calling-side switching center. When the calling terminal substitutes the existing ringback tones to receive the multiring including the sound source and message provided from the multiring service server, it outpus the sound source through the speaker 811 and converts the message into a state capable of being output through the display 811. The state is defined by an interleaving mode in the present specification. When the calling terminal receives the called party message in a call standby state, it judges whether the called party message identifier conforms to the called terminal identifier. If so, the calling terminal converts the call standby mode into the interleaving mode and outputs the called party message received to the display 805. When the called party message is the short message and receives the divided short messages due to the excess of the capacity of the short message, the calling terminal is controlled by the controller 801 to combine the divided and received short messages and to output the combined called party message to the display 805. When the calling terminal makes a call to the called terminal later, it stores the called party message together with the serial number in the memory in order to reduce the transmission traffic. Through the processes, the user of the calling terminal can receive the call standby service of the visual and auditory senses other than the call standby service depending on the existing auditory sense in a call standby state. Thereafter, when the called terminal answers a call, the calling terminal is converted from the interleaving mode to the call mode to perform a normal call between it and the called terminal.

[79] Thereafter, the calling terminal is controlled by the controller 801 to extract the serial number of the called party message corresponding to the called terminal stored in the memory 807 at the moment that the call button and telephone number of the called terminal is input in order for the calling terminal to attempt to make a call the called terminal again. The calling terminal transmits the serial number along with the telephone number of the called terminal to the base station, wherein the serial number is transmitted to the multiring service server via the calling-side switching center and the called-side switching center. The multiring service server does not transmit the called party message to the calling terminal when the serial number conforms to the currently established called party message serial number. At this time, only the information that the serial numbers thereof conform to each other can be transmitted to the calling terminal. When the calling terminal does not receive the called party message and the information that receives the serial numbers thereof conform to each other, it outputs the called party message stored in the memory 807 to the display 805.

[80] FIG. 9 is a flow chart showing a multiring service receiving procedure from a calling terminal according to one preferred embodiment of the present invention.

[81] Referring to FIG. 9, when the calling terminal receives the number of the called terminal and the call button to attempt to make a call to the called terminal (step 901), the calling terminal is controlled by the controller so that it is converted from a standby mode to a call standby mode (step 903). When establishing the speech path between the calling terminal and the multiring service server by grasping the location of the called terminal, the calling terminal receives the sound source and called party message established by the user of the called terminal (step 905). The calling terminal judges whether the called party message identifier received is identical with the called terminal identifier. If so, it converts the state of the terminal into the interleaving mode (step 907). In the interleaving mode state, the calling terminal outputs the received sound source to the speaker and at the same time, outputs the called party message to the display so that the user of the calling terminal receives the multiring service. When the user of the called terminal sensing a call opens a flip and inputs the call button to answer a call, the calling terminal is controlled by the controller so that it is converted from the interleaving mode to the call mode (step 911) to perform a normal call between the calling terminal and the called terminal.

[82] FIGS. 10 and 11 are exemplification views of a screen of a calling terminal in a receive state of a multiring service according to one preferred embodiment of the present invention.

[83] Referring to FIG. 10, when the calling terminal makes a call to the called terminal, if the location of the called terminal is grasped so that it is in a call standby state, the calling terminal is converted into the interleaving mode to output the called message screen 1001 to the display and at the same time, to output the sound source established by the called party through the speaker. The called party message is the message pre- established by the user of the called terminal and includes the short message and the multimedia message.

[84] Referring to FIG. 11, when the calling terminal makes a call to the called terminal, the calling terminal grasps the location of the called terminal so that if it does not establish the called party message corresponding to the called terminal in a call standby state and fails to receive the called message, the calling terminal outputs a general call standby screen 1003 to the display. The call standby screen 1003 is a screen generally provided from the mobile terminal in the call standby mode. In the call standby mode state, the general ringback tones or the sound sources established by the user of the called terminal are outputted to the speaker.

[85] The present invention is not limited the aforementioned embodiments and it would be appreciated by those skilled in the art that many changes might be made in this embodiment without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims

[1] A method for providing a multi ring service during a call standby state in a called terminal switching center, which manages at least one called terminal and is coupled to a multiring service server including multiring information corresponding to a calling-side switching center managing at least one calling terminal, a home location register, and the called terminal, the method comprising the steps of: receiving a first call connection request signal from the calling-side switching center, the first call connection request signal being generated corresponding to a called location information answer signal from the home location register and including at least multiring service identifier, the called location information answer signal being received by the calling-side terminal, the multiring service identifier including a called party message serial number corresponding to a called party message when there is a pre-stored called party message in the memory of the calling terminal; transmitting the first call connection answer signal corresponding to the first call connection request signal to the calling-side switching center; transmitting a second call connection request signal to the multiring service server, the second call connection signal including the at least multiring service identifier; and receiving a second call connection answer signal corresponding to the second call connection request signal from the multiring service server, wherein the multiring service server transmits the pre-stored called party message and the called party message serial number corresponding to the called terminal to the calling terminal via the message service center when the multiring service identifier included in the second call connection request signal does not include the called party message serial number or the called party message serial number included in the multi-ring service identifier does not correspond to the pre-stored called party message serial number corresponding to the current called terminal; does not transmit the called party message when the called party message serial number included in the multiring service identifier corresponds to the pre-stored called party message serial number corresponding to the current called terminal; and transmits a pre-stored sound source corresponding to the called terminal, which substitutes the existing ringback tone, to the calling terminal through a speech path established between the calling-side switching centers, based on the multiring service identifier included in the second connection request signal, wherein the calling terminal outputs the sound source to an external speaker in a call standby state and at the same time, stores the called party message and the called party message serial number in the memory of the calling terminal when the called party message and the called party message serial number from the multiring service server are transmitted; and outputs the called party message stored in the calling terminal to a display of the calling terminal when the called party message and the called party message serial number are not transmitted from the multiring service server.

[2] The method as claimed in claim 1, further comprising the steps of: when the called terminal answers a call, transmitting a call disconnection request signal to the multiring service server; and receiving the call disconnection request answer signal from the multiring service server, wherein the speech path connected to the multiring service server being disconnected by the call disconnection request signal and the call disconnection request answer signal.

[3] The method as claimed in claim 1, wherein the calling terminal transmits a call request signal including at least calling terminal identifier and called terminal identifier to the calling-side switching center.

[4] The method as claimed in claim 1, wherein the speech path is established by means of the first call connection request signal and the second call connection request signal.

[5] The method as claimed in claim 1, wherein the called party message is any one of a short message and a multimedia message.

[6] The method as claimed in claim 1, wherein the sound source and called party message are pre-established through any one of an internet and a wire/wireless communication by means of a user corresponding to the called terminal.

[7] The method as claimed in claim 1, wherein the message service center is included in the multiring service server.

[8] A method for providing a multi ring service during a call standby state in a multiring service server coupled to a calling-side switching center managing at least one calling terminal, a called-side switching center managing at least one called terminal, and a home location register, the method comprising the steps of: receiving a second call connection request signal from the called-side switching center, the second call connection request signal corresponding to a first call connection request signal received from the called-side switching center in the called-side switching center, the first and second call request signals including at least multiring service identifier, the at least multiring service identifier including a called party message serial number corresponding to a called party message when there is a pre-stored called party message in the memory of the calling terminal; transmitting the first call connection answer signal corresponding to the first call connection request signal to the calling-side switching center; transmitting a second call connection answer signal corresponding to the second call connection request signal to the called-side switching center; extracting the pre-stored sound source and called party message by using the multiring service identifier included in the second call connection signal, the called message including the called party message serial number corresponding to the called party message; judging whether the called party message serial number included in the multiring service identifier included in the second call connection request signal corresponds to the pre-stored called party serial number corresponding to the current called terminal; and transmitting the pre-stored called party message and the called party message serial number corresponding to the called terminal to the calling terminal via the message service center when the multiring service identifier included in the second call connection request signal does not include the called party message serial number or the called party message serial number included in the multi- ring service identifier does not correspond to the pre-stored called party message serial number corresponding to the current called terminal, not transmitting the called party message when the called party message serial number included in the multiring service identifier corresponds to the pre-stored called party message serial number corresponding to the current called terminal, and transmitting a pre-stored sound source corresponding to the called terminal, which substitutes the existing ringback tone, to the calling terminal through a speech path established between the calling-side switching centers, based on the multiring service identifier included in the second connection request signal, wherein the calling terminal outputs the sound source to an external speaker in a call standby state and at the same time, stores the called party message and the called party message serial number in the memory of the calling terminal when the called party message and the called party message serial number from the multiring service server are transmitted; and outputs the called party message stored in the calling terminal to a display of the calling terminal when the called party message and the called party message serial number are not transmitted from the multiring service server.

[9] A called-side switching center for providing a multi ring service during a call standby state, which manages at least one called terminal and is coupled to a multiring service server including multiring information corresponding to a calling-side switching center managing at least one calling terminal, a home location register, and the called terminal, the called-side switching center comprising: a means for receiving a first call connection request signal from the calling-side switching center, the first call connection request signal being generated corresponding to a called location information answer signal from the home location register and including at least multiring service identifier, the called location information answer signal being received by the calling-side terminal, the multiring service identifier including a called party message serial number corresponding to a called party message when there is a pre-stored called party message in the memory of the calling terminal; a means for transmitting the first call connection answer signal corresponding to the first call connection request signal to the calling-side switching center; a means for transmitting a second call connection request signal to the multiring service server, the second call connection signal including the at least multiring service identifier; and a means for receiving a second call connection answer signal corresponding to the second call connection request signal from the multiring service server, wherein the multiring service server transmits the pre-stored called party message and the called party message serial number corresponding to the called terminal to the calling terminal via the message service center when the multiring service identifier included in the second call connection request signal does not include the called party message serial number or the called party message serial number included in the multi-ring service identifier does not correspond to the pre-stored called party message serial number corresponding to the current called terminal; does not transmit the called party message when the called party message serial number included in the multiring service identifier corresponds to the pre-stored called party message serial number corresponding to the current called terminal; and transmits a pre-stored sound source corresponding to the called terminal, which substitutes the existing ringback tone, to the calling terminal through a speech path established between the calling-side switching centers, based on the multiring service identifier included in the second connection request signal, wherein the calling terminal outputs the sound source to an external speaker in a call standby state and at the same time, stores the called party message and the called party message serial number in the memory of the calling terminal when the called party message and the called party message serial number from the multiring service server are transmitted; and outputs the called party message stored in the calling terminal to a display of the calling terminal when the called party message and the called party message serial number are not transmitted from the multiring service server.

[10] A multiring service sever for providing a multi ring service during a call standby state by being coupled to a calling-side switching center managing at least one calling terminal, a called-side switching center managing at least one called terminal, and a home location register, the multiring service server comprising: a means for receiving a second call connection request signal from the called- side switching center, the second call connection request signal corresponding to a first call connection request signal received from the called-side switching center in the called-side switching center, the first and second call request signals including at least multiring service identifier, the at least multiring service identifier including a called party message serial number corresponding to a called party message when there is a pre-stored called party message in the memory of the calling terminal; a means for transmitting the first call connection answer signal corresponding to the first call connection request signal to the calling-side switching center; a means for transmitting a second call connection answer signal corresponding to the second call connection request signal to the called-side switching center; a means for extracting the pre-stored sound source and called party message by using the multiring service identifier included in the second call connection signal, the called message including the called party message serial number corresponding to the called party message; a means for judging whether the called party message serial number included in the multiring service identifier included in the second call connection request signal corresponds to the pre-stored called party serial number corresponding to the current called terminal; and a means for transmitting the pre-stored called party message and the called party message serial number corresponding to the called terminal to the calling terminal via the message service center when the multiring service identifier included in the second call connection request signal does not include the called party message serial number or the called party message serial number included in the multi-ring service identifier does not correspond to the pre-stored called party message serial number corresponding to the current called terminal, not transmitting the called party message when the called party message serial number included in the multiring service identifier corresponds to the pre-stored called party message serial number corresponding to the current called terminal, and transmitting a pre-stored sound source corresponding to the called terminal, which substitutes the existing ringback tone, to the calling terminal through a speech path established between the calling-side switching centers, based on the multiring service identifier included in the second connection request signal, wherein the calling terminal outputs the sound source to an external speaker in a call standby state and at the same time, stores the called party message and the called party message serial number in the memory of the calling terminal when the called party message and the called party message serial number from the multiring service server are transmitted; and outputs the called party message stored in the calling terminal to a display of the calling terminal when the called party message and the called party message serial number are not transmitted from the multiring service server.

[11] A called- side switching center for providing a multi ring service during a call standby state, which manages at least one called terminal and is coupled to a multiring service server including multiring information corresponding to a calling-side switching center managing at least one calling terminal, a home location register, and a called terminal, the called-side switching center comprising: a memory storing a program; and a processor coupled to the memory to run the program, wherein by means of the program, the processor receives a first call connection request signal from the calling-side switching center, the first call connection request signal being generated corresponding to a called location information answer signal from the home location register and including at least multiring service identifier, the called location information answer signal being received by the calling-side terminal, the multiring service identifier including a called party message serial number corresponding to a called party message when there is a pre-stored called party message in the memory of the calling terminal; transmits the first call connection answer signal corresponding to the first call connection request signal to the calling-side switching center; transmits a second call connection request signal to the multiring service server, the second call connection signal including the at least multiring service identifier; and receives a second call connection answer signal corresponding to the second call connection request signal from the multiring service server, wherein the multiring service server transmits the pre-stored called party message and the called party message serial number corresponding to the called terminal to the calling terminal via the message service center when the multiring service identifier included in the second call connection request signal does not include the called party message serial number or the called party message serial number included in the multi-ring service identifier does not correspond to the pre-stored called party message serial number corresponding to the current called terminal, does not transmit the called party message when the called party message serial number included in the multiring service identifier corresponds to the pre-stored called party message serial number corresponding to the current called terminal, and transmits a pre-stored sound source corresponding to the called terminal, which substitutes the existing ringback tone, to the calling terminal through a speech path established between the calling-side switching centers, based on the multiring service identifier included in the second connection request signal, wherein the calling terminal outputs the sound source to an external speaker in a call standby state and at the same time, stores the called party message and the called party message serial number in the memory of the calling terminal when the called party message and the called party message serial number from the multiring service server are transmitted; and outputs the called party message stored in the calling terminal to a display of the calling terminal when the called party message and the called party message serial number are not transmitted from the multiring service server.

[12] A multiring service sever for providing a multi ring service during a call standby state by being coupled to a calling-side switching center managing at least one calling terminal, a called-side switching center managing at least one called terminal, and a home location register, the multiring service server comprising: a memory storing a program; and a processor coupled to the memory to run the program, wherein by means of the program, the processor receives a second call connection request signal from the called-side switching center, the second call connection request signal corresponding to a first call connection request signal received from the called-side switching center in the called-side switching center, the first and second call request signals including at least multiring service identifier, the at least multiring service identifier including a called party message serial number corresponding to a called party message when there is a pre-stored called party message in the memory of the calling terminal; transmits the first call connection answer signal corresponding to the first call connection request signal to the calling-side switching center; transmits a second call connection answer signal corresponding to the second call connection request signal to the called-side switching center; extracts the pre-stored sound source and called party message by using the multiring service identifier included in the second call connection signal, the called message including the called party message serial number corresponding to the called party message; judgs whether the called party message serial number included in the multiring service identifier included in the second call connection request signal corresponds to the pre-stored called party serial number corresponding to the current called terminal; and, transmits the pre-stored called party message and the called party message serial number corresponding to the called terminal to the calling terminal via the message service center when the multiring service identifier included in the second call connection request signal does not include the called party message serial number or the called party message serial number included in the multi-ring service identifier does not correspond to the pre-stored called party message serial number corresponding to the current called terminal, does not transmit the called party message when the called party message serial number included in the multiring service identifier corresponds to the pre-stored called party message serial number corresponding to the current called terminal, and transmits a pre-stored sound source corresponding to the called terminal, which substitutes the existing ringback tone, to the calling terminal through a speech path established between the calling-side switching centers, based on the multiring service identifier included in the second connection request signal, wherein the calling terminal outputs the sound source to an external speaker in a call standby state and at the same time, stores the called party message and the called party message serial number in the memory of the calling terminal when the called party message and the called party message serial number from the multiring service server are transmitted; and outputs the called party message stored in the calling terminal to a display of the calling terminal when the called party message and the called party message serial number are not transmitted from the multiring service server.