KR19990053802A - Citi-2 call forwarding exchange system and its control method to provide incoming service - Google Patents

Abstract

A method of providing an incoming service of a Citi-2 call forwarding exchange operating in conjunction with a voicemail device and a paging exchange includes a process in which an arbitrary caller dials a Citi-2 subscriber number, and a subscriber dials the Citi-2 forwarding switch by dialing. Through the process of entering the voice mailbox device of the wireless call network, performing the call waiting function by the subscriber's selection of the subscriber entering the voice mail device, and performing the call waiting function. Calling the Citi-2 terminal through the Citi-2 subscriber, dialing the subscriber number to enter the voicemail device through the Citi-2 call forwarding switch, and entering the voicemail device. The Citi-2 subscriber is connected to any caller.

Description

Citi-2 call forwarding exchange system and its control method for providing incoming service

The present invention relates to a CT-2 (City-2) switching system, and in particular, CT-2 switching system for providing an incoming service using a VMS (voice mailing system) connected to a wireless call network and its control It is about a method.

Hereinafter, the CT-2 destination matching exchange means a CT-2 exchange that provides an incoming service.

In general, the existing CT-2 exchange is designed to provide only subscribers with outgoing calls. Therefore, the CT-2 subscriber used the pager with a paser to use the CT-2 phone more efficiently.

In recent years, a built-in calling function in the CT-2 terminal has been used as a function of combining a pager function and a caller function as a single terminal without purchasing a separate calling device.

However, the CT-2 phone may be useful for outgoing calls, but there are many shortcomings in that it does not provide an incoming service. Therefore, if the CT-telephone is used as an incoming service, it can have a great effect in terms of service. I think there is.

In addition, a general voice mailbox device (VMS) is a device that receives a call from a public telephone network (PSTN) to record the voice of an external subscriber and informs the mailbox subscriber of the recording when the recording is completed. By providing a mailbox function, the public telephone network subscriber calls the wireless paging voice mailbox subscriber and finishes the recording of the voice. The voice mail apparatus calls the pager to notify the subscriber of the recording.

However, the above functions are limited to the voice mail device and the communication between people, and cannot provide a phone call between people, and the telephone call after the pager is made using a public telephone network. In addition, the pager subscriber has the inconvenience of knowing the telephone number of the person calling the pager in order to make a telephone call with the person calling the pager.

That is, the conventional voice recording apparatus cannot record and reproduce voice messages of callers, but cannot provide a switching function for connecting subscribers subscribed to a public telephone network. Also, in the public telephone network, when two subscribers are talking to each other, the same voice service is not provided to two subscribers at the same time because of the limitation of the current network structure.

That is, in order to provide voice information while talking to two subscribers, a conference service and a voice guidance device should be provided to all subscribers. In this case, the conference means a function of connecting multiple call channels simultaneously with the basic functions of VMSS, such as recording and playing voice messages. Currently, the conference function is provided in a public telephone network, but it is impossible to provide a voice guidance function to all subscribers without an additional device.

Accordingly, an object of the present invention is to provide a CT-2 call matching exchange system for providing a call service using a voice mail device (VMS) connected to a wireless call network.

A Citi-2 destination matching exchange system that provides an incoming service for achieving the above object includes a public exchange network that performs routing using a Citi2 subscriber number input from a subscriber side, and a voice mail received by the routing. A Citi 2 incoming match exchange switch which is connected to a device and sends a paging message, the voice mailbox device which detects a DMT signal received after the call is connected and performs a waiting call function or a meat-me function; And a paging switching network for receiving the paging message including the call waiting function and calling the Citi 2 subscriber terminal.

Another object of the present invention is to provide a method for providing an incoming service in a CT-2 switching system using a VMS connected to a wireless call network.

A method of providing a call service of a Citi-2 call forwarding switch operating in conjunction with a voice mail device and a paging exchange for achieving the above object includes the steps of an arbitrary caller dialing a Citi-2 subscriber number and the dialing by the subscriber. Performing a call waiting function by selecting a subscriber entering the voice mail device through the Citi-2 call matching switch, selecting a subscriber entering the voice mail device, and performing the waiting call function. Calling the Citi-2 terminal through the paging system by the Citi-2 call forwarding exchange, and the Citi-2 subscriber receiving the call dials the subscriber number to perform the Citi-2 call matching Entering the voicemail device through an exchange, and the Citi-2 subscriber entering the voicemail device It characterized by being constituted by any procedure call associated with a group optionally the sender.

Another object of the present invention is to provide a method for performing a meat-me function in a voicemail device connected to a wireless call network.

In order to achieve the above object, the method for performing the Meat-Me function of the voice mail apparatus connected to the wireless paging network sends a guide message when checking the call connection, and detects the received DFM signal to request call waiting. And calling the call when the call is requested, checking whether the setting time has elapsed with a timer after calling the caller 2, and calling the call when the call is not made. The process of checking the connection, and when the Citi 2 subscriber connection is characterized in that it consists of a process of performing a meat-measure.

1 is a block diagram of a CT-2 incoming match exchange according to the present invention;

Figure 2 is a block diagram of a VMS (Voice Mailbox Device) connected to a wireless call network according to the present invention.

3 is a diagram illustrating a call flow for providing an incoming service in a CT-2 exchange system according to the present invention.

4 is a control flowchart for performing a meet-me function in a VMS (voice mailbox device) connected to a wireless call network according to an embodiment of the present invention.

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

1 is a block diagram of an incoming match exchange according to an embodiment of the present invention.

The PSTN matching unit 111 performs various relay line connection functions of the public telecommunication network, incoming calls, and outgoing calls.

The CT-2 matching unit 112 performs various call processing functions of the CT-2, and converts the CT-2 subscriber number into a pager number of the called party. Main functions include relay call function, VMS call processing function, national data processing function, number translation function, VMS incoming call processing function and CT-2 subscriber data management function.

The paging exchange matching unit 113 connects to an existing paging exchange and performs paging origination function through No. 7 signaling or TNPP (T.P.P.) protocol. This is because using the TNPP protocol can save time.

The VMS matching unit 114 performs a MEET-ME, various APPLICATION and maintenance functions by matching with the VMS, and uses a signaling method of LAPD (linked access procedure on the D-channel). P. D) to match the incoming call.

The X.25 matching unit 115 transmits the CAMA charging data to the CT-2 network management device using the X.25 protocol.

The control unit 116 controls the system as a whole, and performs maintenance, test and measurement, statistics, various input / output control, and exchange connection functions to distribute the system resources.

That is, the CT-2 destination matching exchange for performing the incoming service is as described above, and the VMS connected to the VMS matching unit 114 that makes a real-time call will be described in more detail as shown in FIG. 2.

The CT-2 destination matching exchange (SDX-CT2) 20 is connected between the PSTN 10 and the VMSS 30. In addition, the VMSS30 includes an E1 connection unit 40 to which the incoming matching exchanger 20 is matched, a switching unit 50 to perform a conference function, a control unit 60 to control the overall operation of the VMSS 30, and a voice message to be transmitted and received. It consists of a sound processing unit 70.

Referring to the meat-me implementation process based on the above configuration.

When a call is made, two channels (E1 lines (1 and 2)) and one channel (three times connected to the voice processing unit) are in a conference state in which the switching unit 50 is connected to each other. In order to be in the conference state (meet-me function is connected to the call), a caller connected to the public telephone network (PSTN) makes a call to the voicemail device 30 and waits for a call based on the guide voice provided under the control of the controller 60. The subscriber enters the key and stays in the call waiting state, and the subscriber connected to the CT-2 destination matching exchange dials the voicemail device 30 and presses a call number, and the controller 50 controls the switching unit 50 to connect with the call. do. In addition, the voice processing unit 70 checks the DTMF input during the call, and also records the contents of the call of two people by the test.

Hereinafter, a call flow process for providing an incoming service based on the above configuration will be described in detail with reference to FIG. 3.

Prior to the description, the numbering system and registration and change of subscriber data will be described.

The numbering system is divided into two types, and the first method is a method in which the CT-2 terminal has a separate numbering system like a pager. For example, 106-460-1234 and the following description will be described assuming the first method. The second method is to distinguish only by the prefix (PREFIX), in which only one prefix per 10,000 subscribers should be released for the PSTN and allocated for CT-2.

In addition, the subscriber data registration and modification is as follows.

First, the CT-2 subscriber data is registered by the remote terminal REMOTE TERMINAL from the sales office in the database DB of BSMS318. The network management system (NMS) 320 immediately or periodically inputs CT2 subscriber data to the CT-2 destination matching exchange 312 through an I / O port connected from the CT-2 destination matching exchange 312.

At this time, the data is registered at the same time in the CT-2 incoming matching switch 312 and the VMS30 connected to the wireless call network, the data include a CT-2 subscriber number, ASP #, VMS #, password, pager number. In addition, the CT-2 subscriber data may be modified by directly calling his / her own number.

This section describes the call flow process for providing incoming services.

In the first process, any caller (general subscriber, CBX, HHP, CT2) dials the CT-2 subscriber number and accesses the PSTN network 311. For example, suppose you dialed 016-460-1234.

The second process is a process of performing routing based on the dialed number in the PSTN network 311 and connecting to the CT-2 destination matching switch 312.

In the third process, the CT-2 destination matching exchange 312 obtains subscriber information (VMS number) by translating the received subscriber number.

In the fourth process, the CT-2 destination matching exchange 312 calls the call to the VMS30 on which the subscriber information is mounted through a LAPD link. At this time, the caller listens to the announcement broadcast from the VMS30, and the caller selects 'waiting function' based on the announcement (by selecting a call waiting key) and waits for a call without hanging up. Stay in the state.

The fifth process is a process in which the CT-2 destination matching exchange 312 performs OUT-DIALING to a pager number registered corresponding to the subscriber number.

A sixth process is a process in which a paging system (TDX-PS) 314 receives a PAGING message from the CT-2 destination matching exchange 312 using the TNPP protocol. At this time, the message is the subscriber number including the 016, and also includes a message indicating that the caller is waiting for the call.

A seventh process is a process in which the paging system (TDX-PS) 314 transmits the paging message received from the CT-2 destination matching exchange 312 through the respective base station (BS) 315 over the air.

The eighth process is a process in which the message transmitted over the airwaves is received by a pager attached to the corresponding CT-2 terminal 316. At this time, the subscriber number 016-460-1234 and a special number (for example, [-]) indicating a call request are displayed on the display window of the CT-2 terminal, and a ring tone is sent out to the speaker at the same time.

Step 9 is a process in which the CT-2 subscriber dials his / her subscriber number.

In step 10, the CT-2 base station 317 receives the dialed digit and then re-dials the PSTN network 311.

Step 11 is a process in which the PSTN network 311 routes the call corresponding to the dialing to the CT-2 destination matching exchange 312.

In step 12, the CT-2 destination matching exchange 312 translates the received subscriber number to obtain subscriber information (VMS number).

Step 13 is a process in which the CT-2 destination matching exchange 312 calls the call to the VMS30 in which the subscriber is mounted through the LAPD link. At this time, the CT-2 subscriber listens to the announcement and inputs a password and a waiting call access number.

Finally, step 14 is a process in which the VMS30 connects the waiting call with the CT-2 subscriber through a built-in time switch to make a real time call. That is, the VMS30 performs a MEET-ME (meat-me) function between the waiting call and the CT-2 subscriber, and the switching unit 40 built in the VMS30 is in a conference state.

As a result, a meat-me function is performed in the VMS30 by the above processes, and a control flow for processing an atmospheric call in the VMS30 will be described in detail with reference to FIG. 4. Hereinafter, the control unit 60 (shown in FIG. 2) is a main control unit 0 including a memory for controlling the overall operation of the VMS30.

First, the controller 60 detects a call connection in step 411 and transmits the initial guide voice in step 413. The guide voice is a message for guiding a call or voice recording as a general message transmitted when a pager number is dialed. Also in accordance with the present invention is a key guide for the atmosphere call.

In step 415, the controller 60 checks whether there is a key input from the user. At this time, if there is a key input, the controller 60 proceeds to step 417. If there is no key input, the controller 60 continuously checks the key input. Here, the key input check is performed by detecting a DTMF signal received by the VMS.

The controller 60 checks the key input and proceeds to step 417 to check whether the input key is a key relating to a waiting call (hereinafter referred to as a call waiting key). At this time, the controller 60 proceeds to step 419 when the call waiting key is performed, and when the call waiting key is not present, the controller 60 proceeds to step 433 to perform a corresponding service function.

The controller 60 checks the call waiting key input and proceeds to step 419, and performs the waiting call function and simultaneously transmits the waiting music to the calling party (generally the PSTN subscriber; the caller of the CT-2 subscriber), and step 421. Run the timer on.

In step 423, the controller 60 checks whether the set time has elapsed. At this time, when checking the set time elapses, the controller 60 proceeds to step 427. When checking the set time elapses, the controller 60 proceeds to step 435.

The controller 60 checks the elapse of the set time and proceeds to step 427 and sends a guide message regarding message recording to the sender. In step 429, the controller 60 checks whether a key received from the caller is a key related to message recording (hereinafter referred to as a message recording key).

At this time, if the message recording key, the control unit 60 proceeds to step 31, and if not the message recording key, the control unit 60 ends the program. In addition, after checking the message recording key input and proceeding to step 431, the controller 60 records a message received from the caller side in a corresponding mailbox (CT-subscriber's mailbox called by the subscriber) and terminates the program. .

On the other hand, the control unit 60 does not check the elapse of the set time in step 425 and proceeds to step 425 to check the connection of the CT-2 subscriber called by the caller. In this case, when checking the CT-2 subscriber's connection, the controller 60 proceeds to step 437. When the CT-2 subscriber's connection is not checked, the controller 60 continues to check the set time elapsed. Return to

The control unit 60 checks the access of the CT-2 subscriber and proceeds to step 437 to perform a meet-me function between the sender and the CT-2 subscriber according to the present invention and terminates the program. .

Although the above-described embodiment describes the meat-measure function in the VMS through the CT-2 exchanger, it is also possible to perform the meat-measure function of the VMS through the paging exchange if applied more widely. For example, any caller waits for a call on the VMS after calling a pager subscriber, and the pager subscriber dials his pager number to access the VMS to perform a meeting-measure with the waiting caller. It may be.

As described above, the present invention may provide a meet-me function, a conference 0 function, and a recording function by applying a VMS for voicemail connected to a wireless call network that is currently being serviced. It is able to receive incoming call on CT-2 network by using the function, that is, it can provide various services to users by providing outgoing service using outgoing CT-2 system using paging network. By adopting a signaling method or protocol that is easy to interwork with other models, it can be easily used for system expansion or new system development.

Claims (9)

In the Citi-2 destination matching exchange system to provide an incoming service, Public switching network performing routing using Citi2 subscriber number input from subscriber side, A Citi 2 destination matching exchange which connects the incoming call by the routing to a voice mailbox device and sends a paging message; The voice mailbox device which detects a DFM signal received after the call is connected and performs a waiting call function or a meat-me function; And a paging switching network configured to receive a paging message including the call waiting function and to call a Citi 2 subscriber terminal. The method of claim 1, Citi-2 incoming match exchange system for providing a call service, characterized in that the C2-2 incoming match exchange and the voice mailbox device is connected to the L.P.D. The method of claim 1, C-2 call matching exchange system for providing a call service, characterized in that the means for sending a paging message between the C2 switch and the paging exchange network is made of T.P. The method of claim 1, The Citi 2 incoming match exchanger, A public telephone network matching unit connected to the switched public telephone network and performing various relay line connection functions for incoming and outgoing calls; Citi-to matching unit which performs various call processing, converts the Citi-2 subscriber number inputted from the public telephone network matching unit into a pager number and outputs it to a paging system matching unit; A paging exchange matching unit for inputting a pager number to transmit a paging message to an existing paging exchange using a T.P.P protocol; Matching with the voice mail device of the wireless call network, the voice mail device matching unit that performs the meat-me and various applications and maintenance functions, A C-2 exchange system for providing an incoming service comprising an X.25 matching unit for transmitting C.A.M charging data to a C-2 network management device using an X.25 protocol. The method of claim 1, The voicemail device, An E1 connection portion connected to the Citi-2 destination matching exchange; A switching unit for connecting a public telephone network subscriber waiting for call through the E1 connection unit and a Citi-2 subscriber called by the subscriber and performing a conference function; Citi-2 exchange system for providing a call service, characterized in that the voice processing unit for performing a voice signal processing for recording the contents of the call between the two subscribers by checking the received received during the conference function. In the method of providing an incoming service of a Citi-2 exchange system operating in conjunction with a voice mailbox device connected to a wireless call network Calling a Citi-2 subscriber and waiting for a call in the voicemail device; The Citi-2 subscriber system receives the call and dials his / her number to enter the voicemail device to perform a meeting function with the caller. How to provide incoming service. A method of providing an incoming service of a Citi-2 destination matching exchange that operates in conjunction with a voice mail device and a paging exchange device, Any caller dialing a Citi-2 subscriber number; Entering, by the dialing, the subscriber into the voicemail device of a wireless call network through the Citi-2 destination matching switch; Performing a call waiting function by selection of a subscriber entering the voicemail apparatus; Calling the Citi-2 terminal through the paging system by the Citi-2 call forwarding exchange by performing the call waiting function; The Citi-2 subscriber receiving the call dialing the subscriber number to enter the voicemail device through the Citi-2 destination matching exchange; And a Citi-2 subscriber having entered the voicemail device, making a call connection with the arbitrary caller. In the method of performing the Meat-me function of the voicemail device connected to the wireless call network, When the call connection is checked, a guide message is sent, and a process of checking whether a call waiting is required by detecting a received DFM signal, Waiting for the call when the call is requested, calling a Citi2 subscriber and checking whether the set time has elapsed together with a timer; Checking the connection of the Citi 2 subscriber called by the call when the set time has not elapsed; And a Citi-2 subscriber system when the C2 subscriber is connected. The method of claim 8, When the set time has elapsed, the system sends a guide message and detects the received DMT, and upon receiving a message recording request, receives a voice message in the Citi 2 subscriber's mailbox, and further comprises the process of recording. -2 method of providing incoming service of the exchange system.