KR19980027454A - How to choose a call forwarding for the electronic exchange - Google Patents

Abstract

The present invention relates to a call forward selection function (CFS), which is an integrated concept of a call forwarding function (CFA), a call forwarding function (CFB), and a non-answering call function (CFN), among the special services of an electronic switching system. Call forwarding, call forwarding, and non-answering call forwarding functions are separated to prevent users from dialing long to receive services such as CFA / CFB / CFN from the user's point of view, and call forwarding, call forwarding, and no answer forwarding It eliminates the disconnection between users, enables users to use the services they need by using one dialing and shortcode, so that they can be organically connected between three different supplementary services, increase the success rate of calls and customize the services that consumers want. By selecting it, you can service higher quality additional service.

Description

How to choose a call forwarding for the electronic exchange

The present invention provides a call forwarding function (CFA: Call Forward All, hereinafter referred to as CFA), a call forwarding function (CFB: Call Forward Busy, hereinafter referred to as CFB), a non-answering call function (CFN: Call Forward) among special services of an electronic switchboard. No Answer (hereinafter referred to as CFN), which is an integrated concept of call forward select function (CFS; CFS).

On the other hand, CFA is a function that transfers all incoming calls to the designated subscriber, CFB is a function that is converted to the designated subscriber when the call is busy (busy), CFN is a designated subscriber when the incoming call is not answered within the specified time Finally, CFS is a general concept of all the above services, which can be selected and used according to the user's convenience.

In addition, the CFA, CFB, and CFN are conventionally separated in the function of the electronic switchboard, and in many cases, the user fails to dial a long time to talk to the called party from the user's point of view. The connection between services was not organic because it had to be selected and executed.

Therefore, only one service had to be satisfied, and even if two or more services were received, there were many inconveniences due to the similarity of services.

In addition, when one additional service is received, the call success rate is not only low, but also has to be used as initially set.

In addition, the transition to other services is complex, and the CFA / CFB / CFN service functions are not available to subscribers because they are either forgotten or forgotten in the process of enabling and releasing services. There were many difficulties.

Accordingly, the present invention has been devised in view of the above, and in the supplementary service of the electronic switchboard, any subscriber uses CFS to adaptively use CFA / CFB / CFN or the like depending on the status of the called party. It is an object of the present invention to provide a call forward selection method of an electronic exchange.

In order to achieve the above object, the present invention provides a call forwarding selection method of an all-electronic switching system comprising a switching network, a switching subscriber connection, an inter-station line connection, an operation management preservation unit, a signal network connection, a database, and an exchange control unit. Determining whether the registration is registered, and if the CFS is not registered, calling the subscriber through a general service process; A second step of performing a CFA service when the CFA is registered by judging whether the CFA service is available in the first step as a result of the determination in the first step; As a result of the determination in the second step, when the CFA is not registered, it is determined whether the busy tone is sent from the called party, and when the busy tone is sent, it is determined whether the CFB has been registered, and if it is registered, the third party performing the CFB service. step; A fourth step of determining whether CFN is registered if the busy tone is not transmitted in the third step and performing CFN service if registered; A fifth step of transmitting a dial tone, such as a general telephone, when the result of the determination in the fourth step is not registered in the CFN service, is provided.

1 is a schematic block diagram of a typical electronic exchange suitable for applying the method of selecting call forwarding according to the present invention.

2 is a flowchart illustrating a call forward selection method of an electronic exchange according to a preferred embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

10: switching network 20: subscriber connection

30: line connection between stations 40: operation management maintenance unit

50: signal network connection 60: database

70: exchange control unit

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

1 is a configuration diagram of a general ASS exchange system, which includes a switching network 10, a switching subscriber connection 20, a line connection between stations 30, an operation management maintenance unit 40, a signal network connection 50, and a database ( 60) and the exchange control unit 70.

Referring to the general ASS exchange system configured as described above, first, the switching network 10 performs an exchange connection function of an actual signal, and the subscriber connection unit 20 has a form suitable for connecting signals from the subscriber to the switching network 10. The signals from the subscriber are converted as much as possible, and the inter-station line connecting portion 30 converts the signals from the relay line so that the signals from the relay line are in a form suitable for connection with the switching network 10.

Next, the operation management maintenance unit 40 performs a function for operation management and maintenance of the exchange system and at the same time provides a connection with operation assistance systems (not shown) of the communication network, and the signal network connection unit 50 provides a signal network And a communication network with a database 60, and the exchange control unit 70 is connected to each of the switching network 10, the operation management preservation unit 40, and the signal network connection unit 50, respectively. It is in charge of the control function to make it happen.

In addition, the exchange is divided into a space division exchange and a time division exchange according to the type of the switching network 10, and according to the control method of the switching control unit 70, the wired logic control and the stored program control are stored. SPC), which is divided into a centralized control method and a distributed control method according to the degree of distribution of control functions, and most of the recent digital exchangers adopt a distributed control method.

Referring to FIG. 2, first, when a dial signal of a target called subscriber for a call attempt is input, the signal connection part 50 is connected by the switching controller 60 through the subscriber connection part 20 and the switching network 10. The call signal is sent to the called party via the step 80.

The exchange control unit 60 determines whether this called party has registered the CFS (step 82).

At this time, if the CFS has not been registered, the subscriber access unit 20 calls the first called subscriber for a predetermined time (step 84).

The exchange control unit 70 determines whether there is a response (step 86), and if there is no connection, through the switching network 10 and the subscriber connection unit 20, the calling subscriber is notified and hooked off. .

In addition, if there is a response from the first called party, the call is connected to the first target called party as in the normal telephone (step 88).

On the other hand, in step 82 of the previous step, the exchange control unit 70 confirms that the called subscriber is registered with the CFS in the database 60 under the signal network connection unit 50, and checks whether the CFA has been registered. If it is determined in step 70), the designated subscriber is called to form a call line.

In this case, the CFA is a function of transferring all incoming calls to a predetermined subscriber. If the user subscribes to the service, the CFA is directly switched to a designated forwarding subscriber.

On the other hand, in the previous step, the exchange control unit 70 reads the database 60 to determine whether the CFA is registered, and if it is not registered, determines whether the busy tone is sent from the called party (step 92).

When busy tone is sent from the called party, the exchange control unit 70 determines whether CFB is registered again (step 94), and if it is not registered, the subscriber who sends the signal by sending the busy tone hooks the call. Turn it off.

In addition, as determined by the exchange control unit 70, if it is registered in the CFB, the call line is connected with the first designated call forwarding subscriber (step 102).

Here, the CFB is a function that is transferred to the designated subscriber when the busy tone is heard when the incoming call is requested, which is a function that allows the first target recipient to talk to the designated subscriber.

On the other hand, in step 92, if the signal of the called party determines whether the busy tone is transmitted, and if the busy tone is not transmitted, it is a case where the called party is idle, that is, it is a non-responsive signal, and thus transmits an unresponsive signal for a predetermined time. (Step 96).

Then, it is determined whether the CFN service is registered (step 98), and when registering with the CFN, the designated subscriber is connected to the exchange of the other station to which the called party designated by the inter-station line connection unit 30 belongs, or within the same exchange. If there is a designated called party, the called party is called in the exchange to connect with the calling party (step 102).

If the CFN is not registered, it means that you have subscribed to the CFS service but have not taken any special action. For this reason, for example, the calling subscriber did not enter the selected special service, or entered it incorrectly. Message is stored in the database and sent to the calling subscriber (step 100).

When the message is finished, the process starts from the previous step 84, which is the same as that of the general telephone service, in which case the first incoming subscriber is inter-stationed as if the called party did not answer the telephone during normal service. In the case of a call through the line connection unit 30 or a subscriber inside the switch, the switch is directly connected in the switching network 10 (step 84).

Then, it is determined whether there is a response (step 86), and if not, it is notified that the connection is not made to hook off.

In addition, if there is a response, it connects to the first target called party (step 88). If there is no response, like the general telephone service, the outgoing call subscriber ends up hooking.

Here, the CFN is a service in which a telephone is transferred to a designated forwarding subscriber when the first target recipient is unresponsive for a specified time when a call is requested.

On the other hand, if you are subscribed to the CFS service, first check if you have applied for CFA service, and if you do not subscribe to the CFA service, determine whether the dial tone of the designated forwarding subscriber is an unanswered signal to perform CFN service. To judge.

By combining the three services of CFA / CFB / CFN, and combining the three services into one service, the subscriber can input the necessary services among the three services by selecting a required service among the subscribers by entering a certain code. Can be.

As an example of how to enter this code, first the subscriber first enters the code to join the CFS. For example, enter * 70 * the called party's subscriber's telephone number # to activate this service. After this service is activated, enter CFA for * 57 *, CFB for * 58 *, and CFN for * 59 *. Enter the code of the service to apply for the service according to the needs of the subscriber.

And, if you want to cancel the call forwarding selection function (CFS) by entering the corresponding code to release the call forwarding selection function (CFS), for example, * 99 * # * the service to be service * It can be used by initializing the received service. If you want to use like a normal phone without receiving the service, you can turn off CFS by entering * 99 * # and use it as a general phone service method.

As described above, the present invention eliminates the disconnection between the call forwarding function, the call forwarding function, and the non-answering call forwarding function, enables one dialing and a short code, and makes the organic connection between three different additional services. It is possible to provide higher quality telephone supplementary services by increasing the call success rate and allowing consumers to choose their desired services.

In addition, if the service is set up incorrectly or if only the CFS is set and other supplementary services, such as the services of CFA / CFB / CFN, are notified of the wrong setting of the called party, the subscriber who subscribes to the service You can check and fix it yourself if something goes wrong.

In addition, when the CFS is to be released, it may be initialized and selected from among conventional services to be serviced, or alternatively, CFA / CFB / CFN may be released to receive general telephone service.

Claims (3)

Switching network 10 for connecting signals from subscriber connection 20 and line connection 30 between stations, operation management preservation unit 40 for providing operation management and maintenance functions of exchange system, and database 60 And a switching control unit 70 connected to and controlling the signal network connection unit 50 for providing a connection with the control network, the switching network 10, the operation management maintenance unit 40, and the signal network connection unit 50. In the call forward selection method of the electronic exchanger, A first step of determining whether or not the received target called party selection function (CFS) is registered when a target called party call number is received; and calling the received target called party subscriber when the call forwarding selection function is not registered. ; As a result of the determination in the first step, when the received target called subscriber is subscribed to the call forwarding selection function, it is checked whether or not the call forwarding service is registered, and when the call forwarding function is registered, the call forwarding service A second step of calling a designated subscriber number according to registration; If the call forwarding function is not registered, it is determined whether the busy tone is sent from the called party, and when the busy tone is sent, it is determined whether the incoming call function is registered. Calling a third step; A fourth step of determining whether a non-answering incoming function is registered if the busy tone is not transmitted in the third step and calling a designated subscriber number according to registration of the non-answering incoming function service if it is registered; A fifth step of calling the received target destination subscriber when the determination in the fourth step is not registered in the non-answering incoming function service; Call forwarding selection method of the electronic exchange, characterized in that consisting of. The method of claim 1, And if the non-answering incoming function CFN is not registered in the fifth step, sending a message corresponding to the called party's calling party before the received target called party's call. How to select your call forwarding. The method of claim 1, The call forward selection function service is a call forward selection method of the electronic switch, characterized in that by setting a predetermined code according to the subscriber's intention to turn on / off the call forward selection function service.