KR20020058835A - Method for offering successive call using telephone card service on intelligent network - Google Patents

Abstract

PURPOSE: A successive call providing method in an intelligent network phone card service is provided to shorten a service providing time in initiating a new call for a successive call connection by providing a successive call by using an initially inputted signal and a specific button of a phone terminal in case that a successive call connection service is requested for the next call connection after a previously connected call is terminated. CONSTITUTION: When a call termination procedure is requested by a called party, a service exchange receives an SUS(Suspend) message and an REL(Release) message as an interchange signaling and searches a specific flag value set for an originating call which has been initially inputted by using a KT card(S100). The service exchange determines whether the searched specific flag value and a flag value set for the originating call are identical to each other(S110) by using the KT card. If it is a KT card call, the service exchange increases a successive call count and interworks a DTMFR(Dual Tone Multi Frequency Receiver) which receives a DTMF signal to collect digits from the calling part(S120). The service exchange determines whether the successive call count exceeds a pre-set number by increasing the number of the successive call count one by one(S130). If the successive call count does not exceeds the pre-set number, the service exchange connects an announcement channel for a successive call connection and outputs it to the calling party(S140). The service exchange determines whether the calling party has requested a successive call by a '#' digit button inputted from the calling party(S150). If the digit '#' is received, the service exchange connects an announcement channel for receiving a new destination call(S160). When the first digit of the destination call is inputted from the calling party to the service exchange(S170), as a new destination call is completely, the DTMFR connection is released. A primitive including the newly inputted destination call is generated and transmitted to a service controller and a destination call translation is requested to be performed(S180). A corresponding switch connection is requested from the service controller to connect the call(S190).

Description

Method for offering successive call using telephone card service on intelligent network}

The present invention relates to a continuous call providing method in an intelligent network calling card service. More specifically, when a continuous call connection service is requested for a subsequent call connection after a previously connected call is terminated from a user's intelligent network calling card, The present invention relates to a continuous call providing method in an intelligent telephone calling card service that provides a continuous call by using a first input signal and a specific button of a telephone terminal, for example, a "#" button, without a procedure of inputting or redialing an intelligent network code.

In general, the intelligent network phone card service is used KT card provided by Korea Telecom, which receives a card input or intelligent network code after connecting the incoming call to perform a call.

1 is a block diagram illustrating a general intelligent network configuration, in which a local exchange, an intelligent network, a service exchanger, a signal converter, and a service controller are interworked to perform the intelligent network calling card service.

The local exchange 20 connects the call exchanger 50 with the service exchanger 50 by setting the path of the call through the signal line input from the intelligent network user 10.

The Public Switched Telephone Network (PSTN) 30 is composed of No. 7, which is a common line signaling method recommended by the International Telecommunications Union-Telecommunication Standardization Sector (ITU-T). It operates in a non-corresponding mode in which the call line and the signal link do not correspond, and various signals are transmitted through signal converters other than the service exchange having the call line.

The service switching point 50 detects an intelligent network service request by providing network access to a user connected to the local exchange or by providing a switching function required for call connection, and the service controller 70 Send data) and receive a response.

In addition, when information is transmitted through voice announcement broadcasting, it performs functions such as collecting voice output and dual tone multi frequency (hereinafter referred to as DTMF) of a specific message for flexible interaction between the user and the network. And a DTMFR 40 which is a device for receiving a DTMF.

The Signaling Transfer Point (hereinafter referred to as STP) 60 is a signal relay station for relaying and exchanging signal messages in R2 / No. 7, which is a common line signaling system of an intelligent network, and is a signal link for switching control. Since it is uneconomical to establish an independent signal link between stations with a small number of circuit lines as it is installed separately from the circuit group, it is an exchange station that relays signals when the signal link is used as a bypass path and shared with other stations. It is a packet switch that delivers signal messages to other nodes and performs a large amount of signal relay processing. It also performs a function of notifying the cover station of the telephone signal message and notifying the other station when the signal relay is impossible.

The service control point 70 is a system of the No.7 signal network, which is an intelligent network, and provides data necessary for processing a service of the intelligent network, thereby qualifying the information received from the service exchange, routing, and information translation. Perform service control of

Next, the operations of each unit will be described in detail with reference to the following flowchart.

2 is a flowchart showing a procedure of performing a call service of a general smart phone card,

When the intelligent network code is received from the user 10 through the local exchange 20, the service exchange 50 interworks to request that the intelligent network telephone card service be started. The service exchanger 50 determines that the telephone card (eg, KT card) service of a specific communication company among the received intelligent network identification code, and outputs the corresponding announcement to enter the card number in the allocated announcement channel (S10). .

When the first digit of the card number is received from the user according to the announcement, the channel is released at that moment, the received digit is stored in a buffer, and when the last digit is received, the card number is transmitted to the service controller 70. do. As the corresponding broadcast code value and primitive for request for input of a password from the service controller 70 are transmitted to the service switch 50, the corresponding broadcast channel is connected by the service switch to guide the user to enter a password input request to the user. Is output.

Here, the primitive is a basic operation element that is exchanged between protocol layers, and forms a message as a primitive itself or a set of primitives to generate an operation for information exchange between intelligent network elements. The service controller and the service exchanger communicate with each other by exchanging operations. Examples of operations of the primitive include PROVIDE, PROMPT, GAP, REJECT, CANCEL, NOTIFY, and EVENT.

In addition, the PROVIDE is a primitive that is generated by the service switcher 50 and requests the service controller 70 to perform the intelligent network call eligibility test, number translation, and call verification. When the function is performed by the received service controller, The service exchange receives an error code consisting of an error code that is a success or failure response.

The service switch 50 transmits the password and the corresponding primitive received from the user to the service controller to request the authentication procedure of the user to be performed (S20). When the authentication procedure is completed (S30), the normal primitive is received at the service exchange. Recognizing this, the service exchanger outputs a guide broadcast requesting the input of the called party number to the user.

As the incoming call is input to the service exchanger 50, a primitive including the incoming call is generated and transmitted to the service controller. After the incoming call translation is requested to be performed (S40), the incoming call translation result is received from the service controller. Or determine whether it is a foreign country. If the incoming call is determined to be a local call, the service controller is requested to connect the corresponding switch to connect the call. If it is determined as another call, the corresponding path is searched to occupy the relay line, and the call is connected through an inter-station signal (for example, R2). If the called party of the other country call is normal, the call is started (S50).

When the called party terminates the call (S60), the call termination procedure is performed as the REL (Release) or SUS (Suspend) message is transmitted through the inter-station signal to the service exchange.

The Release message is a call control message used in the inter-station signal NO.7. The release message is released due to the call connection / setting provided and the resource is ready for a new call upon receiving the release completion message. Notify the called party's both directions. In addition, the Suspend message is a backward message that requires a called party to temporarily suspend a call as a temporary disconnection state during a call.

As described above, when the connection service is retried from the caller after the call is terminated, the card re-entry or intelligent network code redialing procedure is required. Therefore, the connection service providing time may not be shortened when initiating a new call. have.

In addition, there is a problem in that intelligent network resources can not be effectively managed because a connection service is requested and a broadcast service resource or a switch must be used each time a call is connected.

The present invention is proposed by avoiding the problems described above, when the continuous call connection service for the next call connection after the pre-connected call from the user's intelligent network phone card is requested, re-enter the card or Providing service in initiating a new call for continuous call connection by providing a predetermined number of consecutive calls using the first input signal and a specific button of the telephone terminal, for example, a "#" button, without the procedure of redialing the intelligent network code. It is an object of the present invention to implement a continuous call providing method in an intelligent network telephone card service that can shorten the time and save the resources of an announcement broadcasting resource and a switching system such as a switch to efficiently manage intelligent network resources.

1 is a block diagram showing a general intelligent network configuration.

2 is a flow chart showing a procedure of performing a call service of a general smart phone card.

3 is a flowchart illustrating a procedure of performing a continuous call service according to the present invention.

<Description of Symbols for Major Parts of Drawings>

10: service user 20: local exchange

30: PSTN network 40: DTMFR

50: service switch 60: signal converter

70: service controller

Continuous call providing method in the intelligent network phone card service of the present invention for achieving the above object,

A service switch including a local exchange, a dual tone multi-frequency collection unit (DTMFR), a signal converter, and a service card providing method in an intelligent network including a service controller,

Characterized in that to provide a continuous call service using an intelligent network phone card;

The continuous call service logic,

When performing a call service using an intelligent network calling card, if a call termination procedure is requested from a called party during a call while a specific flag value is set for an originating call originally inputted by a caller, a specific flag value is received from the terminated call. A first process of searching;

A second step of determining whether the retrieved flag value is the same as the flag value set for the outgoing call originally inputted from the originator, and if the same is the same, interworking with the DTMFR and incrementing a continuous call count by one;

A third step of connecting an announcement channel asking the caller to connect a continuous call if the increased continuous call count does not exceed a preset number;

A fourth step of receiving an incoming call by outputting an incoming call input announcement when the continuous call request button is received from the caller;

A fifth step of requesting a service controller to translate the number of the incoming call;

And a sixth process of receiving the translation result, performing relay call processing and incoming call connection, and repeating the continuous call service logic.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

For reference, the present invention is a service performed by being embedded in the intelligent network described in FIG. 1, and the following description will be given by taking a KT card as an example of an intelligent network calling card.

3 is a flowchart illustrating a procedure of performing a continuous call service according to the present invention. After the call connection is established between the caller and the called party by the call service procedure of the general smart phone card described in FIG. 2, the called party terminates the call. Start with

In the environment in which the devices shown in FIG. 1 are interworked, when a call termination procedure is requested from a called party, the service switch 50 receives an SUS and REL message as a signal between stations, and thus an outgoing signal first inputted using a KT card. Search for a specific flag value set for (S100). In this case, when the caller makes a call using the KT card, the specific flag value is a value assigned to distinguish the service logic for the other call, and the continuous call service through the KT card is requested in the future. This is the value used when performing.

Subsequently, it is determined whether the specific flag value retrieved by the called party and the flag value set for the call originated using the KT card are the same (S110). If it is different, the call termination procedure is completed. If the call does not perform a conventional call termination procedure, it increments one continuous call count and interworks with a DTMFR (Dual Tone Multi Frequency Receiver), a device that receives a DTMF signal for digit collection from a caller (S120). ). The continuous call count is for checking the number of consecutive call attempts so that the caller can be provided with the continuous call service up to a preset number of times in the state of lifting the handset. At this time, the service switcher 50 increases the number of consecutive call counts one by one and determines whether the predetermined number of times has been exceeded (S130), and if so, stops providing continuous call service.

In addition, the DTMFR is connected or released several times according to the continuous call connection in the state in which the caller does not terminate the call while performing the continuous call service according to the present invention. Upon termination, it is disconnected only once.

Subsequently, if it does not exceed the number of times set as a result of the determination in step S160, it connects the continuous call connection guide broadcast channel and outputs to the caller (S140).

The service exchanger determines whether or not the continuous call is requested by using the "#" digit button input from the caller (S150). If the digit is not received, the call is terminated, and if the digit is received, the announcement broadcast channel in step S170. After the release, the announcement broadcast channel for receiving a new incoming signal is connected (S160).

When the first digit of the incoming call is input from the caller to the service exchange according to the announcement output (S170), the announcement is released and the DTMFR connection is released when the new incoming call is completed as the last digit of the call is input. After generating the primitive including the new incoming signal and transmitting the received primitive to the service controller, requesting that the incoming call translation is performed (S180), receiving the incoming call translation result from the service controller to determine whether it is a local call or another call. Judge. If the incoming call is determined to be a native call, the service controller is requested to connect the corresponding switch to connect the call. If it is determined to be another station, the call is searched for the corresponding route and occupies a relay line, and the call is connected through an inter-station signal (for example, R2) (S190). ). If the called party of the other country call is normal, the call is started.

When the called party terminates the call, the process (S100-S190) is repeated as the REL (Release) or SUS (Suspend) message is transmitted through the inter-station signal to the service exchange.

As described above, in the present invention, when a continuous call connection service for the next call connection is requested after the pre-connected call is terminated from the user's intelligent network phone card, the present invention is first inputted without a procedure for re-entering the card or re-dialing the intelligent network code. By providing a continuous call by using a specific button of a signal and a telephone terminal, for example, the "#" button, it is possible to shorten the service providing time in initiating a new call for the continuous call connection, announcement broadcasting resources and switches, etc. It has the advantage of efficiently managing intelligent network resources by saving resources of exchange system.

In addition, preferred embodiments of the present invention are disclosed for the purpose of illustration, those skilled in the art will be able to make various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications belong to the following claims You should see.

Claims (4)

A service switch including a local exchange, a dual tone multi-frequency collection unit (DTMFR), a signal converter, and a service card providing method in an intelligent network including a service controller, Characterized in that to provide a continuous call service using an intelligent network phone card; The continuous call service logic, When performing a call service using an intelligent network calling card, if a call termination procedure is requested from a called party during a call while a specific flag value is set for an originating call originally inputted by a caller, a specific flag value is received from the terminated call. A first process of searching; A second step of determining whether the retrieved flag value is the same as the flag value set for the outgoing call originally inputted from the originator, and if the same is the same, interworking with the DTMFR and incrementing a continuous call count by one; A third step of connecting an announcement channel asking the caller to connect a continuous call if the increased continuous call count does not exceed a preset number; A fourth step of receiving an incoming call by outputting an incoming call input announcement when the continuous call request button is received from the caller; A fifth step of requesting a service controller to translate the number of the incoming call; And a sixth process of repeating the continuous call service logic after receiving the translation result, performing relay call processing and incoming call connection. The method of claim 1, And, in the second step, if the result of determining whether the flag value is the same, ends the continuous call service logic. The method of claim 1, And in the third process, terminating the continuous call service logic if the increased number of consecutive call counts exceeds a predetermined number of times. The method of claim 1, And in the fourth step, if the continuous call request button is not received from the caller, terminating the continuous call service logic.