KR20000034419A - Voice message service in personal communication exchange system - Google Patents

Abstract

PURPOSE: A voice message service(VMS) is provided so that a call subscriber can directly access the VMS in a personal communication exchange system. CONSTITUTION: A voice message service(VMS) in a personal communication exchange system includes the following steps. A call subscriber inputs a receiver number and a code value for requesting connection to a VMS device, and requests personal communication call(PCC) processing(301). A PCC block of a call subscriber exchanger requests number translation to a number translation block, and receives the result(302). When the code for requesting connection to the VMS device exists in the number received from the receiver(303), the PCC block requests VMS information of the receiver to a subscriber information processor(304), and routes it to the personal communication exchanger connected to the VMS device according to the response(305). Thereafter, the VMS is provided by connecting the call subscriber to the VMS device(306). When the code for requesting connection to the VMS device does not exist in the number received from the receiver, if receiving is impossible, the call subscriber is connected to the VMS device of the receiving subscriber(308). As a result, the call subscriber can directly access the VMS device and leave a message, thereby improving convenience.

Description

Method of voice message service in a personal communication exchange system

The present invention relates to a voice mail service method in a personal communication switching system that allows a subscriber to directly access a voice message service (VMS) device in a personal communication switching system.

In general, a voicemail service (VMS) is a function for storing voice information for an absent or busy party and listening when necessary. The voicemail service is mainly provided as an additional service of a pager system or a wired public telephone network.

Meanwhile, due to the development of mobile communication technology, a personal communication system (PCS) has been introduced to satisfy human desire to communicate freely with anyone at any time, anywhere, and provides commercial services.

However, the voicemail service provided by the personal communication exchange system connects the calling subscriber to the VMS device only when the called subscriber cannot make a call (for example, when the terminal is turned off for a long time) when the called subscriber cannot make a call. Therefore, there is a problem in that the calling subscriber cannot directly access the voice mail service (VMS) device.

Accordingly, an object of the present invention is to provide a voicemail service method in a personal communication exchange system in which a calling subscriber can directly access a voicemail service (VMS) device in a personal communication exchange system in order to solve the above problems.

In order to achieve the above object, in the method of the present invention, a personal voice mail service (VMS) device is connected to a personal communication switch, and personal communication in which VMS information for incoming subscribers is set in a subscriber information processor (HLR). A system, comprising: requesting a personal communication call processing by a calling subscriber entering a called party number and a predetermined code value for requesting connection to a VMS device; The PCC block of the calling party's exchange requesting the number translation to the NTR block and receiving the result; If the code received from the called party has a code requesting connection to the VMS device, the PCC block requests the called party's VMS information from the subscriber information processor (HLR), and the VMS device responds accordingly. Routing to a connected personal communication switch; Providing a voice mail service (VMS) by connecting the calling subscriber and the VMS device; And if there is no code for requesting connection to the VMS device in the number received from the called party, connecting the calling subscriber to the called subscriber's VMS device when the incoming call is not possible according to the status of the called subscriber.

1 is a block diagram showing the configuration of a typical personal communication system suitable for application of the present invention;

FIG. 2 is a schematic structural block diagram of the personal communication exchange shown in FIG. 1;

3 is a flowchart illustrating a VMS procedure that can be directly accessed by the calling subscriber according to the present invention;

4 is an example of signal flow for providing a VMS in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

10: subscriber station 20a, 20b, 20c: base station

30a, 30b, 30c: base station controller 40: personal communication exchange

50: Certification Center 72a-n: ASS-W

78: INS 80: ASS-T

96: HLR 98: VMS

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

1 is a block diagram showing the configuration of a typical personal communication system suitable for applying the present invention. Referring to FIG. 1, a personal communication system includes a subscriber station (i.e., a mobile telephone: 10), a plurality of base stations 20a, 20b, and 20c, base station controllers 30a, 30b, and 30c for managing the base stations, and personal communication. It includes an exchange 40, the authentication center 50, etc., the personal communication exchange 40 is connected to the other exchange 60 through the trunk.

As shown in FIG. 2, the personal communication switch 40 shown in FIG. 1 includes an access switching subsystem-wireless (ASS-W: 72a to 72n) and an access switching subsystem-wired subscriber (ASS-S: 76). ), Central Switching Subsystem (INS: 78), Central Control Subsystem (CCS: 84), Access Switching Subsystem-No.7 (ASS-7: 82), Access Switching Subsystem-Trunk (ASS-T: 80 Base station controllers 30a to 30n are connected to the access switching subsystem-wireless (ASS-W: 72a to 72n), and the general wired subscriber station 74 is connected through the ASS-S 76. , Other exchange 60, public telephone network (PSTN: 92), ISDN 94, subscriber information processing device (HLR: 96), voice mail service (VMS) device 98, etc. to ASS-T 80 It is. That is, the personal communication switch 40 is divided into a central control subsystem, a network control subsystem, and a matching exchange subsystem, each of which includes a main processor (MP), a peripheral processor (PP), and peripheral devices. . The personal communication switch 40 includes an ASS-W (72a-72n) for providing a call processing function by connecting a wireless base station to a conventional TDX-10 series switch, and storing and managing information on mobile subscribers. Visitor Location Register (VLR) that performs routing function is added. In such a personal communication system, authentication and encryption functions, location registration and handover functions are required for PCS mobile call processing and mobility management.

In FIG. 2, a subscriber location processing device (HLR) 96 processes location information of a subscriber, and a voice mail service (VMS) device 98 provides a voice mail service to a subscriber.

3 is a flowchart illustrating a method in which a calling subscriber directly accesses a VMS device according to the present invention. Referring to FIG. 3, the originating subscriber dials and requests a connection to the VMS device from the personal communication call processing (PCC) block of the originating party's side exchange (301). At this time, the calling subscriber who wants to connect to the VMS device immediately inputs the number consisting of the called subscriber's number + * + feature code (FC). The calling party's personal communication call processing (PCC) block requests number translation in the number translation (NTR) block (302), and determines whether a predefined "* + FC" is included in the received key value (303). . At this time, the feature code (FC) value for direct access to the VMS device is set in advance between the subscriber and the system operator, and when the corresponding feature code value is input, it is directly connected to the VMS device.

When the '* + FC' key value is input, the calling party's personal communication call processing (PCC) block requests the VMS conversion number of the called party to the subscriber information processor (HLR) (304). Subsequently, the routing information is received from the subscriber information processor (HLR) and routed to the switch (VMS_PCX) in which the VMS device designated by the called mobile subscriber is located (305), and the user part control of the switch in which the PCC block of the calling party subscriber switch and the VMS device is located ( UPC) block (306). Then, the calling subscriber and the VMS device are connected (307).

If the "* + FC" key is not input, the receiver attempts to connect to the called subscriber according to the existing procedure, and connects to the VMS device when the called subscriber is in an unreachable state (308).

As such, according to the present invention, the calling subscriber can be directly connected to the called subscriber's VMS device, thereby making the voice mail service (VMS) more convenient.

4 is an example of signal flow between blocks when a caller directly accesses a VMS device according to the present invention.

Referring to Figure 4, the calling party side switch (PCX1), subscriber information processor (HLR), the VMS device is connected to the switch (VMS_PCX), the VMS device, the calling party side switch (PCX1) is a personal communication matching control ( PCSI) block, personal communication call processing (PCC) block, number translation (NTR) block, routing control (RCO) block, user part control (UPC) block, call processing service control (CPSC) block, The connected exchange VMS_PCX includes a user part control (UPC) block, a location registration call control (LCC) block, a routing control (RCO) block, a number translation (NTR) block, and a user part control (UPC) block.

PCS Interface Control (PCSI) is installed in ASP in ASS-W, and link management function between switch and base station controller (BSC), mobility management function, interface message encoding / decoding function, subscriber call and access control processor. (SCCP) and matching functions. The PCC Call Control Block (PCC) is implemented in an Access Switching Processor (ASP) in the ASS-W, which handles the origination and reception of personal communication subscribers. That is, the PCC block processes the signals of the personal communication subscribers received from the PCSI block and provides information required for the personal communication subscriber call processing through the location registration call control (LCC) block. Collects, obtains roaming numbers of incoming mobile subscribers from HLR in conjunction with Call Processing Service Control (CPSC) block, requests number translation in NTR block, and signals equipment and switch through Local Service (LSL) block. Control the connection. In case of own call, it interworks with analog subscriber control (ASC) block, and in case of outgoing call or incoming call, it interlocks with user part control (UPC) block. In addition, interworking with the handoff control (HOC) block for handoff processing, and controls the additional service request of the mobile subscriber in conjunction with the additional processing service block.

Number Translation (NTR) blocks and Route Control (RCO) blocks are implemented in the Number Translation Processor (NTP) in the INS. The Routing Control (RCO) blocks provide the ability to specify routing and bypass routing paths and traffic for the path. Perform the restriction function and perform the call restriction function. In addition, it performs network management function and performs network management related statistical function to notify it when requested in statistical block. It performs routing function by receiving handoff routing request in PCS call processing. Here, routing is a function of determining an arbitrary access switching processor (ASP) belonging to a corresponding path for occupying a relay line, and bypass routing is a function of requesting connection of a call to a bypass path when there is no direct connection line. Call Restriction function is to interlock with network management block to restrict call per path or to perform protection or extension for priority call guarantee.

The User Part Control (UPC) block is mounted in an Access Switching Processor (ASP) in ASS-T, and is an outgoing call of ISDN User Part (ISUP) signaling, which is a type of common line signaling. Incoming call, relay call processing and status management are performed. The user control unit (UPC) block interlocks with the routing control (RCO) block to occupy the outgoing line of a specific route selected by the routing control (RCO) block, or is notified of the incoming line occupancy request from the user interface matching (UPI) block. By matching between the subscriber control (ASC) block and the user mismatch (UPI) block, it assists with various fault handling and relay line closure and recovery functions. In addition, the user control unit (UPC) block receives the outgoing line request from the mobile subscriber processing block and processes it. If the translation number of the station number is found at the incoming line, the UPC block communicates with the subscriber information processing device (HLR) through the CPSC block and dials the dial number. After obtaining (TLDN), it performs relay call or incoming call processing.

The Call Processing Service Control (CPSC) block is a block that performs the operation procedure. The basic function of the parameter of the component is described by referring to the related functions of application process and operation, indication number and dialog number management, and operation / error definition. Performs encoding and decoding function, and classifies the operation and displays the timer value.

A location registration call control (LCC) block is a block that is mounted on a location registration processor (LRP) in the INS and provides data for mobile subscriber call processing. The location registration call control (LCC) block provides outgoing subscriber information to a personal communication call processing (PCC) block when making a mobile subscriber call, and controls the incoming mobile subscriber information when the incoming mobile subscriber responds to paging. If a request is made to transmit a block and the number (TLDN) is allocated for the subscriber's incoming call, the function performs the function of assigning the number (TLDN).

The subscriber information processor (HLR) is a database management system that stores and manages subscriber parameters and location information for all terminals registered in its own PCN. The subscriber information processing device (HLR) must register important data such as access capability, basic service, and additional service of the terminal, and performs routing function of the called subscriber.

After examining the function of each block as described above, the signal flow in the embodiment of the present invention will be described.

Call setup message from the calling subscriber's mobile phone to the personal communication call processing (PCC) block through the base station and the base station controller through the personal communication coordination control (PCSI) block of the calling party's exchange. (Call Setup (pcs no + * + FC) Message is received. At this time, the calling subscriber enters the called subscriber's number and special code and feature code (FC).

The personal communication call processing (PCC) block requests the number translation (EnblockRQ) to the number translation (NTR) block, so that the number translation (NTR) block processes the call response (PcsCallRP) message to the personal communication call processing. To the (PCC) block. The Personal Communication Call Processing (PCC) block forwards the Transformation Request (TRANRQ (vms)) message to the Call Processing Service Control (CPSC) block, and the Call Processing Service Control (CPSC) block sends the Routing Request (RoutRQ) message to the subscriber. To the information processing device (HLR). The subscriber information processing device (HLR) accesses the location registration call control (LCC) block of the exchange to which the VMS device is connected, so that the location registration call control (LCC) block processes the routing response message (RoutRP (TLDN)). The call processing service control (CPSC) block then forwards a Transition Response (TRANRP (TLDN)) message to the Personal Communication Call Processing (PCC) block.

The Personal Communication Call Processing (PCC) block requests the number translation by passing the number received from the other party to the Number Translation (NTR) block as an Enblock Request (EnblockRQ) message, and the Personal Communication Call Processing (PCC) block and routing control ( RCO) exchanges messages for outgoing calls (RoutingRQ, OutgoingCallRP) between blocks, and sends outgoing call scissor response (OgtSzRP) messages to a user part control (UPC) block. Upon receiving the outgoing call scissor response (OgtSzRP) message from the user control block (UPC), an information response (PcsCgInfoRP) message is transmitted to the user control control (UPC) block, whereby the user control block (UPC) blocks the VMS device. Transfers an IAM message to a user part control (UPC) block of a connected exchange.

The user part control (UPC) block of the exchange connected to the VMS device transmits a prefix number translation request message (PfxTranTrkRQ) message to the number translation (NTR) block, requests a number translation, and receives an internal call response (IntPcsCallRP) message. The user control unit (UPC) block and the location registration call control (LCC) block exchange PCS end request (PcsTermRQ) messages and voicemail call response (VmsCallRP) messages, and the user control unit (UPC) block controls the routing control (RCO). If a routing request (RoutingRQ) message is transmitted to the block, the routing control (RCO) block attempts to seize the trunk connected to the VMS device by sending a VMS originating procedure request (VmsOgtSzRQ) message to the user part control (UPC) block. Upon receipt of the outgoing Scissor Response (OgtSzRP) message and successful possession, the User Control Unit (UPC) block transmits a VMS Information Response (VmsCgInfoRP) message to the counterpart User Control (UPC) block, and the User Control (UPC). The block delivers an IAM message to the VMS device.

Accordingly, the VMS device transmits an ACM message to the user part control (UPC) block, the user part control (UPC) block sends a response (CdStRP) message to the counterpart user part control (UPC) block, and the user. The secondary control (UPC) block forwards the ACM to the counterpart user control (UPC) block, and the user control (UPC) block forwards the response (CdStRP) message to the personal communication call processing (PCC) block. . The Personal Communication Call Processing (PCC) block delivers an "Alerting" message to the Personal Communication Match Control (PCSI) block or an ANN or connect message, and accordingly a response message. Thus, a connection is established between the calling subscriber and the VMS device.

As described above, according to the present invention, since the calling subscriber can directly access the voice mail service and leave a message in the personal communication system, the voice mail service (VMS) can be more conveniently provided in the personal communication system. have.

Claims (1)

In a personal communication system in which a voice mailbox service (VMS) device is connected to a personal communication switch, and VMS information for incoming subscribers is set in a subscriber information processor (HLR), Requesting personal communication call processing by the calling subscriber entering a called party number and a predetermined code value for requesting connection to the VMS device; The PCC block of the calling party's exchange requesting the number translation to the NTR block and receiving the result; If the code received from the called party has a code requesting connection to the VMS device, the PCC block requests the called party's VMS information from the subscriber information processor (HLR), and the VMS device responds accordingly. Routing to a connected personal communication switch; Providing a voice mail service by connecting the calling subscriber and the VMS device; And If there is no code requesting the connection to the VMS device in the number received from the called party, personal communication characterized in that it comprises the step of connecting the calling subscriber to the VMS device of the called subscriber if the incoming call is not possible according to the status of the called subscriber. Voicemail service method in exchange system.