KR19980037038A - Call forwarding service method of electronic exchange - Google Patents

Abstract

According to the present invention, when a call arrives at the subscriber number of the subscriber A registered in the call forwarding service, the call is connected to the subscriber number of the call forwarding destination registered for performing the call forwarding service. An electronic switching system performing an exchange function with a subscriber of another country, the first step in which subscriber A connected to the ASS-S 11 registers for a call forwarding service, and the subscriber A connected by an arbitrary subscriber. If required, the ASS-S 11 determines whether the subscriber A is a call forwarding service object, and if the subscriber A is a call forwarding service object, the ASS-S 11 sends the OMC 30 to the subscriber number of the subscriber A's call forwarding destination. A second step for requesting a corresponding digit number, the digit corresponding to the subscriber number of the A forwarding destination of the subscriber A in response to the request of the ASS-S 11 by the OMC 30; A third step of reading a call from the DB 31 and applying it to the ASS-T 12; and the digit number is translated by the INS 13 at the request of the ASS-T 12, and the number is translated. And a fourth step of establishing a call path between the subscriber A and the calling party by connecting a subscriber line corresponding to the subscriber number with an arbitrary calling party line.

Description

Call forwarding service method of electronic exchange

The present invention relates to a call forwarding service method of an electronic switchgear, when a subscriber A registers with a call forwarding service and enters a subscriber number of a call forwarding destination, the call is recalled when the call arrives at the subscriber number of the subscriber A. The present invention relates to a call forwarding service method of an electronic switchboard, which is capable of connecting a call to the subscriber A moving to a call forwarding destination by switching to a subscriber number of a call forwarding destination and calling the subscriber A.

Conventionally, conventional exchanges have been realized with distinction between general line exchanges, packet exchanges, telex exchanges, etc., depending on the nature of the communication being exchanged. However, since the concept of ISDN (Intergrated Service Digital Network) is introduced, all terminals can be connected by ISDN standard matching method, so the exchange can use integrated access and signaling functions regardless of the nature of communication or type of terminal. Has developed into a structure that can realize. It is very useful to introduce the concept of concentration and decentralization of various functions in the development of exchanges.

In particular, the TDX-10 electronic switch, which is a representative example of the electronic switch, has a distributed switching structure that separates the local switch and the aggregation function from the centralized switching function in consideration of the integrated connection and economical aspects of the ISDN.

That is, the number translation function for call processing and the routing function of the central switch are concentrated, and other functions are distributed to be performed in the corresponding subsystem.

In addition, the TDX-10 electronic switch exchange control and management of the operation and maintenance functions are centralized, and the actual collection and operation of the operational data is to be performed by each subsystem.

In the telephone switchboard including the TDX-10 telephone switchboard, the calling current is applied to the subscriber line corresponding to the subscriber number when the calling subscriber enters the digit number corresponding to the called subscriber's subscriber number using the calling subscriber's telephone. And a ringing tone is output from the telephone set corresponding to the subscriber number. When the called subscriber picks up the receiver / receiver of the called telephone in response to the ringing tone, the called telephone is in a hook-off state, The called party becomes available to talk to each other.

However, in this case, in order for the called party to always respond to an incoming call, the active area of the user must be maintained at a relatively short distance from the telephone to which a specific subscriber number is assigned and must remain available to respond to the call. It is limited.

To solve this inconvenience, when a user moves to an area where a phone with a unique subscriber number cannot be used, the user uses a wireless pager or an answering machine to answer a call or confirm a call message coming to him from the area. However, in the case of the wireless pager, the user has to check the called number and make a call to the call number, so that the call with the caller can be carried out, and the answering machine can record the recorded call message for a predetermined time. Since it is a form of checking after the elapse of time, there is a problem in that it is impossible to immediately call the calling subscriber.

Accordingly, the present invention was created to solve the above-mentioned disadvantages, and when the subscriber A registers with the call forwarding service and enters the subscriber number of the call forwarding destination, the call is made when the call arrives at the subscriber number of the subscriber A. The purpose of the present invention is to provide a call forwarding service method of an electronic switchboard which is capable of connecting a corresponding call to the subscriber A who has moved to a call forwarding destination by switching to the subscriber number of the call forwarding destination and calling the subscriber A. have.

According to an embodiment of the present invention for realizing the above object, in an electronic exchange performing a function of exchanging with a domestic / country subscriber to an accepted analog subscriber, the subscriber A connected to the ASS-S is a call forwarding service. In the first step of registering with the subscriber, if the subscriber A is requested by any caller, the ASS-S determines whether the subscriber A is a call forwarding service, and if the subscriber A is a call forwarding service, A second step of requesting the digit number corresponding to the subscriber number of the A subscriber's call forwarding destination to the OMC, the digit corresponding to the subscriber number of the subscriber A's call forwarding destination of the subscriber A in response to the request of the ASS-S; The third step of reading the number from the DB and applying it to the ASS-T; and the digit number is translated from the INS at the request of the ASS-T, and the number translated subscriber Provided is a call forwarding service method of an electronic switching system comprising a fourth step in which a subscriber line corresponding to a number and an arbitrary subscriber line are connected to establish a call route between the subscriber A and the subscriber.

Preferably, in the present invention, the first step includes the subscriber A entering the service code and the calling number as ASS-S, the ASS-S transmitting the calling number to the OMC, and the OMC is a DB. It is determined whether the subscriber A corresponding to the calling number is a serviceable object based on the subscriber information stored therein, and if the subscriber A is a serviceable object, the digit number corresponding to the data according to the call transfer from the subscriber A is determined. Receiving an input, and storing the data received in the step in a DB to register the subscriber A to the incoming service.

Even more preferably, the step of receiving the digit number in the present invention is a voice message according to the information input guide for the subscriber number of the call forwarding destination output from the GSI of ASS-T by the request of the OMC to the subscriber A Transmitting the digit number corresponding to the subscriber number of the call forwarding destination input from the subscriber A to the OMC in response to the voice message, outputted from the GSI of the ASS-T at the request of the OMC. Transmitting a voice message according to the information input guide on the release time of the call forwarding service to the subscriber A, and transmitting a digit number corresponding to the termination time input from the subscriber A to the OMC in response to the voice message. And the digital number corresponding to the digital number corresponding to the telephone number of the call forwarding destination transmitted through the step and the termination time by the OMC. Storing the call in the DB.

Even more preferably, in the present invention, when the subscriber A registers with the call forwarding service, the ASS-S further includes setting a MAST bit to '1' in the subscriber information table of the subscriber A. .

Preferably, in the present invention, the ASS-S determines whether the subscriber A is a call forwarding service by searching for the mast bit of the subscriber information table of the subscriber A when the subscriber A is requested to access by any subscriber.

According to the present invention composed of the above steps, when the subscriber A registers in the call forwarding service and enters the subscriber number of the call forwarding destination, when the call arrives at the subscriber number of the subscriber A, the call is made to the subscriber of the called party. The A subscriber, who is automatically switched to the number and moved to the call forwarding destination, can answer the call, thereby enabling an immediate call with the caller.

1 is a block diagram showing a main part of an exchange system to which the present invention is applied;

2A and 2B are flowcharts illustrating a method of registering a call forwarding service of a subscriber according to an embodiment of the present invention;

3 is a flowchart illustrating a call forwarding service method of an electronic switch according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10,20: electronic exchanger, 11,21: ASS-3,

12,22: ASS-T, 13,23: INS,

14,24: CCS, 15: GSI,

30: OMC, 31: DB.

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 main configuration of an exchange system to which the present invention is applied.

As shown in FIG. 1, the switching system includes an electronic switch 10 to which subscriber A and subscriber B are connected, and a call forward destination A 'which is a target of call forwarding service at the request of subscriber A. An OMC (20) connected to the electronic switchboard (10) connected to the electronic switchboard (10) and the electronic switchboard (20), which stores various data for performing the call forwarding service in a DB (Data Base) ( Operation Management Center) 30.

More specifically, the electronic switch 10 performs a call processing function for a general analog subscriber, and when a service code and a subscriber number according to an incoming service request are input from a specific subscriber, the digit number corresponding to the subscriber number is INS. ASS-S (Access Switching Subsystem for Subscriber Lines) to be transmitted to the OMC 30 via an Interconnection Network Subsystem (13) and an Access Switching Subsystem for Trunks (ASS-T) 15; An Interconnection Network Subsystem (INS) that performs the overall functions of the centralized call processing and the subscriber matching exchange subsystem (11), and performs relay line call processing and GSI on demand of the OMC 30. (Global Service Interface) (15) embedded therein the telephone number of the call forwarding destination required to perform the incoming service or the solution of the incoming service ASS-T (300) for outputting a voice message for the input guidance for the time so that the voice message is transmitted to the subscriber A, and CCS (to perform the overall operation and maintenance of the electronic switch) ( Central Control Subsystem (14).

On the other hand, since the electro-electric exchanger 20 is composed of components that perform the same function as the electro-electric exchanger 10 described above, a detailed description of the components will be omitted.

Hereinafter, the operation of the call forwarding service method of the electronic switch according to an embodiment of the present invention will be described in detail with reference to the flowcharts shown in FIGS. 2 and 3.

First, a method of registering a call forwarding service of a subscriber according to an embodiment of the present invention will be described in detail with reference to the flowcharts shown in FIGS. 2A and 2B.

If a digit number corresponding to a service code, for example, '027' and a subscriber's subscriber number, for example, '1111111' are input from the subscriber A (step 40), the ASS-S (11) receives the service code based on the service code. Recognizing that the subscriber wishes to register the call forwarding service assumed in the present invention, the subscriber number entered together with the service code is transmitted through a space division switch (not shown) of the INS 13 and ASS-T 12. To the OMC 30 (step 41).

Accordingly, the OMC 30 determines whether the subscriber A is a serviceable object based on the subscriber information stored in the embedded DB 31 (step 42), and if it is determined that the subscriber A is not a serviceable object. (NO in step 42) request transmission of a broadcast to inform the ASS-T (12) of the electronic switchgear (10) of the service registration unavailability state (step 43), and the ASS-T 12 requests the corresponding request. In response to the broadcast, a broadcast for guiding the service registration failure state output from the GSI 15 by driving the embedded GSI 15, for example, 'You cannot use the call forwarding service. A space division switch and the ASS-S 11 are transmitted to the handset of the subscriber A (step 44).

On the contrary, if the A subscriber is determined to be a service target in the OMC 42 in step 42 (YES in step 42), the OMC 42 sends the subscriber number of the call forwarding destination to the ASS-T 12. Requesting to send a broadcast for information input guide (step 45), and in response to the request, the ASS-T 12 drives the GSI 15 to convert the subscriber of the call forwarding destination output from the GSI 15; Broadcast for information input guide for the number, for example, 'Please enter the phone number to receive the call forwarding service' is the A subscriber's A through the partition switch of the INS (13) and the ASS-S (11) Send to the handset (step 46).

Subsequently, when a call forwarding destination, for example, a telephone number of 'A', for example, '2222222' is input (step 47) in response to the announcement, the ASS-S 11 calls the corresponding destination phone. The digit number corresponding to the number is transmitted to the OMC 30 (step 48). The digit number is transmitted to the OMC 30 and registers the digit number in the DB 31 (step 49).

After performing recording of the digit number, the OMC 30 requests a broadcast transmission for information input guidance on the release time of the call forwarding service assumed by the present invention to the ASS-T 12 (step 50). In response to the request, the ASS-T 12 drives the GSI 15 to broadcast information for guiding the release time of the call forwarding service output from the GSI 15. Please enter the termination time. For example, if it is 6 pm, please input 1800. 'is transmitted to the subscriber of the subscriber A via the space splitting switch of the INS 13 and the ASS-S 11 (step 51). .

Subsequently, when a termination time is input from the subscriber A in response to the announcement, for example, '2000' is input for '8 pm' (step 52), the ASS-S 11 has a digit number corresponding to the termination time. The OMC 30 transmits the digit number to the OMC 30 (step 53). The OMC 30 receives the digit number and registers the digit number in the DB 31 to terminate the call forwarding service registration process (step 54).

At the same time, the ASS-S 11 sets the MAST bit in the subscriber information table of subscriber A to '1' and classifies subscriber A as a subscriber registered in the call forwarding service.

Hereinafter, a call forwarding service method of an electronic switching system according to an embodiment of the present invention will be described in detail with reference to the flowchart shown in FIG. 3.

When subscriber B calls subscriber A (step 60), the ASS-S 11 retrieves the mast bit of the subscriber information table of subscriber A to determine whether subscriber A is a call forwarding service target (step 61). If the subscriber A is not registered in the call forwarding service, the subscriber receives the call current of 20 Hz to the subscriber line of the subscriber A (step 62). A call tone is generated to call the subscriber A (step 63).

Then, the ASS-S 11 determines whether the handset of the subscriber A is hooked off (step 64), and if the hook-off state of the subscriber A is detected (YES in step 64), The call path between the subscribers A is established so that the subscriber A or subscriber B can make a normal telephone call (step 64).

However, if the A subscriber is a call forwarding service subject registered in the call forwarding service (YES in step 61), the ASS-S 11 determines that the ASS-S 11 is the INS 13 in step 61. Requests the information retrieval according to the call transfer to the OMC 30 via the space splitting switch and the ASS-T 12 (step 66), and the OMC 30 receives the information from the ASS-S 11. In response to the request, the information registered in the DB 31 is retrieved and the subscriber number of the call forwarding destination A ′ registered from the subscriber A is transmitted to the ASS-T 12 (step 2222222). 67).

Subsequently, the ASS-T 12 requests the number translation for the subscriber number, for example, '2222222', to the number translation processor (not shown) of the INS 13 to perform the number translation for the subscriber number ( Step 68), the INS 13, if the translation of the subscriber number is a foreign call as shown in Fig. 1, the INS 13, the digit number corresponding to the subscriber number through the ASS-T (12) 20, the ASS-T 22 transmits the ASS 23 to the ASS 23 in the same process as the step 68. ) Requests the switchboard 20 so that the subscriber line of the call forwarding destination A 'corresponding to the digit number is connected (step 69).

Accordingly, the electronic switchboard 20 allocates the subscriber line of the call forwarding destination A 'to connect the subscriber B and subscriber A so that a call forwarding service is performed for the subscriber A. A call path between subscribers A who is moved to the call forwarding destination A 'is established so that the subscriber B and the subscriber A can make a normal call.

As described above, according to the call forwarding service method of the electronic switching system according to an embodiment of the present invention, the subscriber A registers with the subscriber number of the subscriber A in a state in which the subscriber A registers with the call forwarding service and inputs the subscriber number of the call forwarding destination. When the call arrives, the call is switched to the subscriber number of the call forwarding destination, and the subscriber A who has moved to the call forwarding destination is called to transfer the call requested to be connected to the subscriber number of the subscriber A to the call forwarding destination. Being able to connect with the subscriber enables instant call with the caller.

Claims (5)

In an electronic exchange performing an exchange function with a domestic / other party to an accepted analog subscriber, A first step in which subscriber A connected to the ASS-S 11 registers for a call forwarding service; When the subscriber A is requested to access by any caller, the ASS-S 11 determines whether the subscriber A is a call forwarding service, and if the subscriber A is a call forwarding service, the ASS-S 11 returns to the OMC 30. A second step of requesting a digit number corresponding to the subscriber number of the call forwarding destination of the subscriber A; In response to the request of the ASS-S 11, the OMC 30 reads the digit number corresponding to the subscriber number of the call forwarding destination of the subscriber A from the DB 31 and applies it to the ASS-T 12. The third step and The digit number is translated from the INS 13 at the request of the ASS-T 12, and the subscriber line corresponding to the number-translated subscriber number is connected to an arbitrary calling party subscriber line. The call forwarding service method of the electronic switchboard, characterized in that the call path between the four steps are set. 2. The method of claim 1, wherein the first step includes the subscriber A entering the service code and the calling number into the ASS-S 11, and the ASS-S 11 sending the calling number to the OMC 30. In the step of transmitting, the OMC 30 determines whether the subscriber A corresponding to the calling number is a serviceable object based on the subscriber information stored in the DB 31, and if the subscriber A is serviceable, Receiving the digit number corresponding to the data according to the call forwarding from subscriber A, and storing the data received in the step in the DB 31 to register the subscriber A to the incoming service; Call forwarding service method of exchange. The method of claim 2, wherein the step of receiving the digit number according to the information input guide for the subscriber number of the call forwarding destination output from the GSI 15 of the ASS-T 12 at the request of the OMC (30) Transmitting a voice message to the subscriber A, and transmitting a digit number corresponding to a subscriber number of a call forwarding destination input from the subscriber A to the OMC 30 in response to the voice message, the OMC 30. The voice message according to the information input guide for the release time of the call forwarding service output from the GSI (15) of the ASS-T (12) by the request of the) is transmitted to the subscriber A, and responds to the voice message Transmitting the digit number corresponding to the termination time input from the subscriber A to the OMC 30, and the digit number corresponding to the telephone number of the call forwarding destination transmitted by the OMC 30 through the step; At termination time And storing a different digit signal in the DB (31). 4. The method of claim 3, further comprising: when the subscriber A registers with a call forwarding service, the ASS-S 11 sets a MAST bit to '1' in the subscriber information table of the subscriber A. Call forwarding service method of an electronic switch. 5. The subscriber station of claim 1, wherein the ASS-S 11 retrieves the mast bit of the subscriber information table of the subscriber A when the subscriber A is requested to connect by any subscriber, and the subscriber A transfers the call. A call forwarding service method of an electronic switch, characterized in that it is determined whether the service target.