KR20050115509A - Cellular recall service offering method in occurrence of obstacle voice mail service - Google Patents

Abstract

The present invention relates to a method of providing a CRS service in the event of a failure of a voicemail system. In particular, the CMS (Cellular Recall) is replaced by replacing a VMS system during a failure time during an unexpected accident or failure of a voicemail service (VMS) system. Service) It is a technology that provides a service to a customer.

According to the present invention, the calling terminal MS; Call-to-call exchanger (MSC); Home location register (HLR); Common Ground Station (CGS); Voicemail (VMS); NVMS; And a method of providing a CRS (Cellular Recall Service) service in case of a failure of a voice mail system including SMC, wherein there is no paging response (NPR) or no response (NA) from the called terminal based on the VSRN information at the originating exchange. A first step of attempting to access a CGS for interworking with a mailbox (VMS); Transmitting, by the CGS, a voice recording or call back number (CBN) message to a voicemail box (VMS) to be delivered to the called subscriber; A third step of attempting to bypass VSRN information to NVMS when it is unable to send a message to the voice mailbox (VMS); And a fourth step of transmitting the CBN message to the SMC in the NVMS.

Description

Cell recall service offering method in occurrence of obstacle voice mail service

The present invention relates to a method of providing a CRS service when a failure of the voicemail system occurs. More specifically, the present invention relates to a technology that provides a CRS (Cellular Recall Service) service to a customer by replacing a VMS system during a failure time in case of an unexpected accident or failure of a voice mail service (VMS) system.

In general, when a call is made by a mobile phone, the other party does not answer the call within a predetermined time, or when the call is missed, the call is automatically transferred to the voicemail.

At this time, if a voice message is left in the voice mail box, the voice mail system is stored, and the other party can hear the stored voice message and know the phone call.

1 is a flowchart illustrating a call processing procedure of a conventional voicemail (VMS) system.

Looking at Figure 1, the terminal (MS) (10a, 10b) for the call; Call exchange and exchange (MSC) 20a, 20b; Home location register (HLR) 30; Common Ground Station (CGS) 40; And a voice mail service 50.

First, when the originating terminal 10a attempts to make an outgoing call (S11), the originating exchange 20a requests the location information to the home location register 30 to obtain the location information of the called terminal 10b (S12), The home location register 30 grasps the location information of the called terminal 10b and transmits it to the calling exchange 20a (S13).

In this state, when the outgoing exchange 20a attempts to make an incoming call to the destination exchange 20b based on the location information of the destination terminal 10b (S14), the destination exchange 20b is paged to the destination terminal 10b. It is required (S15).

At this time, if there is no paging response (No Paging Response: NPR) or no response (No Answer: NA) from the called terminal 10b, the called exchange 20b receives the telephone number of the called subscriber from the home location register 30. (Routing Number) is requested (S16), the home location register 30 grasps the corresponding voicemail (VMS) information and delivers it to the destination exchange 20b (S17).

Subsequently, the originating exchange 20a attempts to connect to the CGS 40 for interworking with the voice mailbox (VMS) 50 using the VMS Service Routing Number (VSRN) received by the home location register 30 (S18). ).

At this time, the CGS 40 stores the voice recording or call back number (CBN) to be delivered to the called subscriber from the calling terminal 10a in the voicemail box 50 (S19).

As described above, in the related art, when the mobile phone is turned off or does not answer the call, the mobile phone can store and transmit a message of the person who has called the voicemail (VMS) as the next best option. Failure to function as a mailbox can result in customer complaints.

Accordingly, the present invention is to solve the above problems, the present invention is a CRS (Cellular Recall Service) service to replace the VMS system during the failure time when the failure to perform the voice mail (VMS) function due to an unexpected accident or failure The goal is to minimize customer complaints that may arise from providing customers with

As the technical idea for achieving the above object of the present invention

Originating and receiving terminal (MS); Call-to-call exchanger (MSC); Home location register (HLR); Common Ground Station (CGS); Voicemail (VMS); NVMS; In the method of providing a CRS (Cellular Recall Service) service when a failure of the voicemail system consisting of SMC,

If there is no paging response (NPR) or no response (NA) from the called terminal, a first step of attempting to access a CGS for interworking with a voicemail box (VMS) based on VSRN information in an originating exchange;

Transmitting, by the CGS, a voice recording or call back number (CBN) message to a voicemail box (VMS) to be delivered to the called subscriber;

A third step of attempting to bypass VSRN information to NVMS when it is unable to send a message to the voice mailbox (VMS); And

It provides a CRS service providing method in the event of a failure of the voicemail system including the fourth step of transmitting the CBN message to the SMC in the NVMS.

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

Before describing a call processing procedure when a failure occurs in the voice mail system (VMS) according to the present invention, a system of a general mobile communication network will be described.

The mobile communication network consists of a home location register (HLR), a mobile communication exchange (MSC), a visitor location register (VLR), a base station (BS), a mobile station (MS), and many other additional equipment.

The Home Location Register (HLR) is a database having subscriber location information and additional service information, and also serves to control services. The Mobile Switching Center (MSC) connects calls when mobile subscribers make or receive calls, and the Visitor Location Register (VLR) displays visitor information in the area served by the mobile switch. Saving.

A base station (BS) is composed of a base station controller (BSC) and a base station transmit / receive subsystem (BTS), and the base station controller (BSC) and the base station transmit / receive subsystem (BTS) are moved. It is in charge of the wire / wireless interface function between the communication switch and the subscriber. A mobile station (MS) refers to a mobile subscriber having a terminal.

At this time, a plurality of home location registers (HLRs) may exist in one service network, and one or more mobile communication exchange (MSC) / visitor location registers (VLRs) may exist in one home location register (HLR). One base station (BS) may be connected to one MSC.

2 is a flowchart illustrating a call processing procedure when a failure occurs in a voice mail (VMS) system according to the present invention.

Looking at Figure 2, the terminal (MS) (10a, 10b) for the call; Call exchange and exchange (MSC) 20a, 20b; Home location register (HLR) 30; Common Ground Station (CGS) 40; And voicemail (VMS) 50; Notification VMS (NVMS) 60 including CRS (Cellular Recall Service); And a Short Massaging Center (SMC) 70.

At this time, the VMS system 50 stores the subscriber's number, the subscriber's service level, the recorded voice file, the CBN, etc., and the notification message and the CBN when the voice is recorded in the subscriber mailbox in association with the SMC 70. It sends a message to subscriber.

Next, a call processing procedure when a failure occurs in the voice mail system (VMS) of the present invention will be described with reference to FIG. 2.

First, when the originating terminal 10a attempts to make an outgoing call (S21), the originating exchange 20a requests the location information to the home location register 30 to obtain the location information of the called terminal 10b (S22), The home location register 30 grasps the location information of the called terminal 10b and transmits it to the calling exchange 20a (S23).

In this state, when the outgoing exchange 20a attempts an incoming call to the destination exchange 20b based on the location information of the destination terminal 10b (S24), the destination exchange 20b moves to the destination terminal 10b. Paging is required (S25).

At this time, if there is no paging response (No Paging Response: NPR) or no response (No Answer: NA) from the called terminal 10b, the called exchange 20b receives the telephone number of the called subscriber from the home location register 30. (Routing Number) is requested (S26), the home location register 30 grasps the corresponding voicemail (VMS) information and delivers it to the destination exchange 20b (S27).

Subsequently, the originating exchange 20a attempts to connect to the CGS 40 for interworking with the voice mailbox (VMS) 50 using the VSMS (VMS Service Routing Number) received by the home location register 30 (S28). ).

At this time, the CGS 40 transmits a voice recording or call back number (CBN) to the VMS 50 to be transmitted from the calling terminal 10a to the called subscriber. For example, the call is not called due to an unexpected accident or failure. If not, the CGS 40 attempts to bypass the VSRN information to the NVMS 60 (S29). Then, the CBN information is finally delivered to the SMC 70 (S30).

Here, when the bypass communication is attempted to the NVMS 60, if the non-subscriber mode connection is not NVMS own VSRN information, the CRS is processed (since the call number may be left, the CBN is transmitted to the subscriber in association with the SMC 70). In case of subscriber mode connection, call processing is regarded as Fail after transmitting a failure announcement or CT (Congestion Tone).

As described above, according to the CRS service providing method when a failure of the voicemail system according to the present invention occurs, when the voicemail (VMS) function cannot be performed due to an unexpected accident or failure, the CRS is replaced by replacing the VMS system during the failure time. Providing services to customers can minimize possible customer complaints. Therefore, even in the event of a failure of the VMS system, it is possible to maximize the convenience of customers using voicemail.

1 is a flowchart illustrating a call processing procedure of a conventional voicemail system (VMS).

2 is a flowchart illustrating a call processing procedure when a failure occurs in a voicemail system (VMS) according to the present invention.

<Description of Symbols for Major Parts of Drawings>

10a, 10b: Incoming and outgoing terminal (MS) 20a, 20b: Incoming and outgoing exchange (MSC)

20: Home Location Register (HLR) 40: CGS (Common Ground Station)

50: voicemail (VMS) 60: NVMS (Notification VMS)

70: Short Message Center (SMC)

Claims (4)

Originating and receiving terminal (MS); Call-to-call exchanger (MSC); Home location register (HLR); Common Ground Station (CGS); Voicemail (VMS); NVMS; In the method of providing a CRS (Cellular Recall Service) service when a failure of the voicemail system consisting of SMC, If there is no paging response (NPR) or no response (NA) from the called terminal, a first step of attempting to access a CGS for interworking with a voicemail box (VMS) based on VSRN information in an originating exchange; Transmitting, by the CGS, a voice recording or call back number (CBN) message to a voicemail box (VMS) to be delivered to the called subscriber; A third step of attempting to bypass VSRN information to NVMS when it is unable to send a message to the voice mailbox (VMS); And And a fourth step of transmitting the CBN message from the NVMS to the SMC. The method of claim 1, wherein when the bypass communication is attempted to the NVMS in the third step, when the non-subscriber mode connection is used instead of the VSRN information of the NVMS, the CRS service is processed. The method of claim 1, wherein when the bypass communication is attempted to the NVMS in the third step, the call processing is regarded as a failure when the subscriber mode connection is not NVMS own VSRN information. How to Provide CRS Services. The method of claim 3, wherein a failure announcement or a CT (Congestion Tone) is transmitted when the call processing fails.