KR100313282B1 - Method for emboding voice mail storage service in a exchange - Google Patents

Abstract

The present invention relates to a voice mail storage service implementation method in an exchange. When the called terminal C is busy or unanswered, the CC _t 212 receives a call connection request message from the calling terminal B, If the voicemail service of the destination terminal C is registered, a number translation request message for translating the number of the voicemail service access number is transmitted to the NTC 232 to translate the number. After receiving the outgoing routing request message according to the number translation result, the RCC 252 transmits an ISUP call setup request message to the VMSC 400 to the ICC 254. If the ICC 254 can establish a call with the VMSC, the ICC 254 transmits an initial address message to the VMSC 400, and transmits a ringback tone and an incoming response message received from the VMSC 400 to the calling terminal B. After the call path between the calling terminal B and the VMSC 400 is established, the announcement broadcast provided from the VMSC 400 is transmitted to the calling terminal B, and the voice message provided from the calling terminal B is transmitted to the VMSC 400. Recording). Therefore, it is possible to expand the scope of the voicemail service to generate economic benefits, and to improve the quality of the service, thereby preempting the competition in subscriber acquisition.

Description

How to implement voicemail storage service in exchange {METHOD FOR EMBODING VOICE MAIL STORAGE SERVICE IN A EXCHANGE}

The present invention relates to a voice mail storage service at an exchange, and in particular, after implementing a voice mail storage service at an exchange, a voice mail service center is provided using an integrated service digital network user part (hereinafter referred to as an ISUP). In the voice mail storage service implementation method in the exchange to transmit the announcement provided from (Voice Mail Service Center: VMSC) to the calling terminal, and to transmit and record the voice message provided from the calling terminal to the VMSC It is about.

Typically, the voicemail storage service is a service made by the ISUP between the calling subscriber and the VMSC. In more detail, after receiving an incoming request message from the calling subscriber to the called subscriber, if the called subscriber is busy or unanswered, after setting up the call to VMSC, the announcement broadcast provided by the VMSC is called. And a voice message to be transmitted to the called subscriber from the calling terminal to the VMSC for recording.

However, the existing exchange providing the voicemail storage service as described above is connected to the VMSC as a specific index number or a root number. In other words, the access number to the VMSC was connected as a specific route number without the step of number translation. This is because the subscriber's VMSC access number and the switch's VMSC access number are not the same. In addition, the conventional exchange used the R2 signaling method for connecting with the VMSC, the above R2 signaling method is inconvenient to receive the caller number, and has to inquire again the caller number, call time pass time And the amount of information is limited.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a voicemail service subscriber provided with a voicemail service, and to store a voicemail service provided from a VMSC by using an ISUP to access a VMSC when a busy or unanswered call is made. The present invention provides a method for implementing a voicemail storage service at an exchange so that a function of transmitting an announcement broadcast to an originating terminal and transmitting and recording a voice message provided from the originating terminal to a VMSC can be implemented.

In the present invention, the voicemail storage service implementation method in the exchange to achieve the above object is in response to the call connection request message provided from the calling terminal when the called terminal is busy or unanswered, the incoming call processing block in the additional service profile Transmitting a number translation request message for translating the registered voice mail service access number to the number translation control block; In response to the outgoing routing request message according to the number translation result, transmitting an ISUP call setup request message from the relay call processing block to the voice mailbox service center to the ISUP call control block; Setting up a call path between a calling terminal and a voice mail service center by transmitting an initial address message for establishing a call with a voice mail service center in an ISUP call control block; And storing the voice message provided from the calling terminal in the voice mailbox service center.

1 is a block diagram illustrating a method for implementing a voice mail storage service in an exchange according to the present invention;

2 is a detailed flowchart illustrating a method for implementing a voicemail storage service in an exchange according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: ASS 200: exchanger

210: ASS-S 230: INS

250: ASS-T 300: Tandem exchanger

400: VMSC A: ISUP

B: called terminal C: called terminal

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

FIG. 1 is a block diagram illustrating a method for implementing a voice mail storage service in an exchange according to an embodiment of the present invention. An access switching subsystem (hereinafter referred to as ASS) 100 and an exchange ( 200, a tandem exchange 300, and a voice mail service center (referred to as VMSC) 400.

The ASS 100 is a connection exchange subsystem in a single station exchange and includes a call control processing block (hereinafter referred to as CC _o ) 110. CC _o 110 transmits the call connection request message received from the originating terminal B to the exchange 200.

Switch 200 is a switch that implements the voicemail storage service function, ASS-S (Subscriber) 210, Interconnection Network Subsystem (hereinafter referred to as INS) 230, and ASS-T (Trunk) 250 is provided.

The ASS-S 210 is a subscriber-side access exchange sub-system, and includes an incoming call processing block (Call Control_terminated: abbreviated as CC _t ) 212 and a call forwarding control block (hereinafter referred to as CFC). (Abbreviated) (214). CC _t 212 receives the call connection request message from CC _o 110 and determines whether the called terminal C is busy or unanswered. If the called terminal C is busy or unanswered in the above determination, the called terminal C confirms that the called terminal is a voice mail service subscriber, and if it is a voice mail service subscriber, transmits a voice mail service request message to the CFC 214. The CFC 214 sends a number translation request message to the INS 232 for translating the voicemail service access number registered in the supplementary service profile to set up a call to the VMSC 400. In addition, the CFC 214 receives a ring back tone and an incoming response message from the ISUP call control block (hereinafter referred to as ICC) 254, and then receives CC _t 212 and CC _o. The ringback tone and the incoming response message are transmitted to the calling terminal B through 110.

The INS 230 is a sub-system connecting the ASSs and includes a number translation control block (hereinafter abbreviated as NTC) 232. After receiving the number translation request message from the ASS-S 210, the NTC 232 translates the number for the voicemail service access number, and sends the outgoing routing request message to the ASS-T 250 according to the number translation result. Send it.

The ASS-T 250 is a trunk side connection exchange subsystem and includes a relay call processing block (hereinafter referred to as RCC) 252 and an ICC 254. After receiving the outgoing routing request message from the INS 230, the RCC 252 sends an ISUP call setup request message to the VMSC 400 to the ICC 254. After receiving the call setup request message from the RCC 252, the ICC 254 determines whether to set up a call with the VMSC 400. If the call can be set by the determination, the CFC 214 notifies the outgoing call setup success message. Next, the initial address message according to the call setup with the VMSC 400 based on the ISUP (A) is transmitted to the tandem switch 300 through the ISUP (A). ICC 254 also sends ringback tone and incoming response messages provided from tandem switch 300 to CFC 214.

The tandem switch 300 transmits the initial address message received from the ASS-T 250 to the VMSC 400, receives a ringback tone and an incoming response message from the VMSC 400, and then receives the received ringback tone and the incoming call. The response message is sent to the ICC 254.

The VMSC 400 receives an initial address message from the tandem switch 300 and then transmits a ringback tone and an incoming response message indicating that the VMSC 400 has responded to the tandem switch 300. Thereafter, the VMSC 400 transmits a guide broadcast for storing a voice mail to the calling terminal B after the call path to the calling terminal B is set, and records a voice message provided from the calling terminal B.

With reference to the flowchart of FIG. 2, the voicemail storage service implementation method of the exchange which has the above-mentioned structure is demonstrated in more detail.

First, the dial-CC _o (110) that has received a call connection request message with the destination terminal (C) from the terminal (B) transmits the received call connection request message to the _{CC t (212), CC t} (212) is a CC _{o It} is determined whether the called terminal C is busy or no answer according to the call connection request message received from 110 (step 200).

If the call is not in a busy or unresponsive state at step 200, CC _t 212 sets a call path to the called terminal C to switch the call path between the calling / called terminals B and C to make a call connection. Control is performed (step 201). On the other hand, if the busy or no answer state is determined in the determination step 200, it is checked whether the called terminal C is a subscriber registered in the voicemail service (step 202). If it is not registered in the voicemail service in the check step 202, a service failure message indicating that the voicemail service cannot be provided is sent to the calling terminal B (step 203). On the other hand, if the called terminal C is registered in the voicemail service in the checking step 202, the CC _t 212 transmits a voicemail service request message to the CFC 214 (step 204).

Receiving the voice mailbox service request message from CC _t 212, the CFC 214 transmits a number translation request message for translating the voicemail service access number registered in the supplementary service profile to call the VMSC 400. Transmit to NTC 230 (step 205).

Upon receiving the number translation request message from the CFC 214, the NTC 232 translates the number for the voicemail service access number and transmits the outgoing routing request message to the RCC 252 according to the number translation result (step 206). .

Receiving the outgoing routing request message from the INS 230, the RCC 252 sends an ISUP call setup request message to the VMSC 400 to the ICC 254 (step 207), and the ICC 254 sends the VMSC 400 a message. It is determined whether or not to set up a call with (step 208).

If the call cannot be established with the VMSC 400 in the determination step 208, the ICC 254 notifies the originating terminal B of the call failure message through the ASS-S 210 and the ASS 100 (step). 209). On the other hand, if the call can be established with the VMSC 400 in the determination step 208, the ICC 254 notifies the CFC 214 of the outgoing call setup success message. The ICC 254 then sends an initial address message to the tandem switch 300 according to the call setup with the VMSC 400 based on the ISUP (A) (step 210).

Upon receiving the initial address message according to the call setup from the ICC 254, the tandem switch 300 transmits the initial address message to the VMSC 400 based on the ISUP (A) (step 211). Thereafter, the VMSC 400 receives the initial address message, provides a ringback tone, and then transmits an incoming response message indicating that the VMSC 400 has responded to the tandem switch 300 based on the ISUP (A). (Step 212).

Receiving a ringback tone and an incoming response message from the VMSC 400, the tandem switch 300 transmits the ringback tone and the incoming response message to the ICC 254 based on the ISUP (A) (step 213) and the ICC 254. Sends a ringback tone and an incoming response message to the CFC 214 (step 214).

Receiving the ringback tone and the incoming response message from the ICC 254, the CFC 214 sends the ringback tone and the incoming response message to the calling terminal B through CC _t 212 and CC _o 110 (step 215). ).

Finally, after the call path between the calling terminal B and the VMSC 400 is set up, the VMSC 400 sends the announcement broadcast for storing the voice mail to the calling terminal B, and uses the calling terminal B. When the voice message provided from the subscriber is transmitted to the VMSC 400 via the ISUP (A), the VMSC 400 records (stores) the above-mentioned voice message (step 216).

According to the present invention as described above, when the called terminal is a voice mail service subscriber and is busy or does not answer, the present invention transmits the announcement broadcast for storing the voice mail provided from VMSC to the calling terminal, and sends the voice message provided from the calling terminal. By implementing the function of sending and recording to VMSC on the exchange, it is possible to expand the scope of voicemail service and generate economic profits, and to improve the quality of service to preempt the competition in subscriber acquisition. have.

Claims (5)

A voicemail storage service implementation method in an exchange having an incoming call processing block, a number translation control block, a relay call processing block, and an integrated service digital network user part (ISUP) call control block, In response to the call connection request message provided from the calling terminal, when the called terminal is busy or unanswered, a number translation request message for translating the voicemail service access number registered in the supplementary service profile is received in the incoming call processing block. Transmitting to the number translation control block; In response to an outgoing routing request message according to a number translation result by the number translation control block, transmitting an ISUP call setup request message from the relay call processing block to a voice mailbox service center to the ISUP call control block; Setting up a call path between the calling terminal and the voice mailbox service center by transmitting an initial address message for establishing a call with a voice mailbox service center in the ISUP call control block; And storing the voice message provided from the calling terminal in a voice mailbox service center. The method of claim 1, wherein the method is And determining whether a voicemail service is registered in the called terminal to transmit the number translation request message to the number translation control block. The method of claim 1, wherein in the step of transmitting the number translation request message to the number translation control block, When the called terminal is not busy or in an unresponsive state, establishing a call path to the called terminal to control a call connection between the calling terminal and the called terminal. The method of claim 1, wherein in the step of transmitting the ISUP call setup request message to the ISUP call control block, And checking whether to set up a call with a voice mail service center in order to transmit the initial address message to a voice mail service center. The method of claim 1, wherein in the step of establishing a call path between the calling terminal and a voice mail service center, And transmitting a ringback tone and an incoming response message to the calling terminal for establishing a call path between the calling terminal and a voice mail service center.