KR930007243B1 - Incoming calls transfer function controlling method - Google Patents

Abstract

The method is for servicing 3 types of telephone reception switching services (1;unconditional switching, 2;switching when the line is busy, 3;switching when there is no response for certain time) to satisfy subscribers. It is composed of the stages of: extracting a number to be switched to when service is available; translating switching condition, counter management and numbers; transferring the information of switch connection; transferring the information of switch control to a dispatch side; and performing normal telephone conversation.

Description

Control of incoming call switching function in all electronic switch

1 is a diagram illustrating the configuration of a sub-system required to perform an incoming call transfer function of an electronic switchboard.

2 is a flowchart illustrating an implementation of an incoming call transfer function according to the present invention.

3 is a flowchart of an incoming call transfer local call processing according to the present invention.

4 is an incoming call switching outgoing call processing flow chart according to the present invention.

* Explanation of symbols for main parts of the drawings

ASS: Subscriber Subsystem CCS: Central Control Subsystem

INS: Internal Network Subsystem

LTAS: subscriber and trunk matching subsystem

LSS: Time Division Switch Control Subsystem

SSS: Signal transmission and reception sub system

TCS: Call Processing Control Subsystem

OSS: Special Service Control Subsystem

NHS: Number Translation and Routing Bus System

SNS: Space switch and call switch resource management subsystem

CSS: Manipulator and Space Switch Control Subsystem

MSS: Statistics Data Collection Management Subsystem

CAS: Billing Information Processing Subsystem

The present invention relates to a method for controlling an incoming call transfer function which is a subscriber service in an electronic switchboard.

In the conventional case, a subscriber who has been granted a call forwarding function by an operator registers a subscriber number to be forwarded to a special code with a telephone and transfers a call that is scheduled to be forwarded to his / her number to another subscriber who wants to transfer the call. In the TDX-1A (registered trademark), such as an electronic exchange, only unconditional switching, which is switched regardless of the state of an incoming call transfer subscriber, is implemented, and thus, it is not possible to provide various call transfer service depending on the subscriber state.

The present invention devised to solve the above problems implements the incoming call switching function to switch the call according to the status of the subscriber by piggybacking on various and convenient service needs of subscribers with the rapidly developing electronic and communication technology It provides three types of call forwarding services such as unconditional switching to switch regardless of status according to subscriber's request, call switching to switch when status is busy and no answer switching if not responding for a certain non-response time. In Korea, these three types of call forwarding can be serviced in combination up to 5 times to provide a variety of incoming call forwarding of the desired type to provide the method of controlling the call forwarding function to satisfy the service needs of subscribers. The purpose is to.

The present invention provides an electronic exchanger having an ASS comprising LTAS, LSS, SSS, TCS and OSS, an INS comprising NHS, SNS and CSS, and a CCS comprising MSS and CAS to achieve the above object. In the method of controlling the call forwarding function, the first step of receiving the call forwarding service request and checking the service availability and system status and extracting the number to transfer the call forwarding when the service is available, the call forwarding service is switched regardless of the state. Nested unconditional switching, busy switching, and non-responsive switching are nested so that the switch is disconnected accordingly, the second step of counter management and number translation, and during incoming call switching local call processing, call waiting for translation The third step of forwarding the switch connection information to the calling party according to the previous switch connection state by checking the value of the switching counter when no response is in progress 4th step of transferring the switch control information due to the processing of the normal call and the continuous nesting during the local call processing, and the incoming call switching outgoing call processing. And a fifth step of performing a switch counter information transmission to a calling party according to a previous switch connection state and processing when a call is normally made.

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

FIG. 1 is a diagram of sub-systems for incoming call switching function. Sub-system (LTAS) controlling matching of subscriber and relay line, sub-system (LSS) controlling time-division switch, R2MFC and DTMF signal transmission and generation of various tones. Subsystem (SSS), Subsystem (TCS) to control general call processing, Subsystem (OSS) to control various special services, Subsystem (NHS) to handle number translation and routing, Spatial switch and recording guidance Subsystem (SNS) that manages resources and conference call resources, Subsystem (CCS) that controls network and spatial switches, Subsystem (MSS), which collects and manages various statistical data, Subsystem that processes billing information ( CAS).

2 is a flowchart illustrating an implementation of the call forwarding function.

When receiving the call transfer service request according to the registration status of the call forwarding service and the subscriber status (1) Unconditionally, busy, or unanswered, the incoming call transfer counter for each type is stored (2) and these values are added to the nesting in the home country. Investigate whether the limit is exceeded 5 times (3). If it is within the standard value, the incoming call transfer service should be handled from the perspective of generating a new call, so it should be performed only when the system is in a normal state by investigating whether the system is overloaded or urgent (4). Then, the subscriber number to be transferred is extracted from the call transfer pool (5). If the incoming call transfer mode is a non-answer transfer (6), because the passage is currently connected, disconnect the incoming call transfer switch (7) to increase the counter (8), and if the call is unconditionally switched or busy (9) Increase according to the form (10, 11) and then require the translation of the call forwarding number (12). When the local call notification is received in the state of waiting for the number translation (13), the incoming call switching native call processing is performed (14). When the outgoing call notification is received (15), the incoming call switching outgoing call processing is performed (16).

FIG. 3 is a flow diagram of incoming call switching local call processing. When it recognizes that the called subscriber is occupied (17) and checks the value of the switching counter when there is no answer (18), if it is 0, the calling party is not connected at all. If the occupancy notification (19) is not 0, the call path is connected more than once, so the incoming call transfer switch connection request is sent to the calling party (20), and when the incoming call transfer switch connection request is received (21), the incoming call transfer is performed. The switch connection request is transmitted to the calling party (22). Waiting for the switch for the home call to be connected and receiving notification of the switch connection (23) and when the subscriber responds (24) reports the initial call forwarding charge (25) forwards the call to the calling party and is busy with the call forwarding service State (26). When the calling party recovers (27) it reports the incoming call transfer final charge and the call is released (28). Even in the waiting for a response, three types of inbound call forwarding service nesting are possible, so when the incoming call forwarding switch is connected (29) or receives a disconnect request (30), it is transmitted to the calling party (31, 32).

FIG. 4 is a flow diagram of incoming call transfer outgoing call processing. When receiving outgoing call notification, it is no longer necessary to consider nesting, and upon recognizing that the outgoing call line is occupied (33), it checks whether the value of the transfer counter is zero. (34) If the call path is not connected at all, the caller is not occupied. (35) If it is not 0, the call path is connected more than once. . Waiting for the switch for the outgoing call to be notified (37) after receiving the switch connection notification (38) when the incoming call is received (38) when the called party responds (39) when the initial call is reported (40). The mobile station enters the busy state by the incoming call transfer service (41). When the calling party recovers (42), it reports the incoming call transfer final charge and releases the call.

As described above, the present invention is applied to a large-capacity electronic exchange such as TDX-10 (registered trademark), and the transfer is performed when the state of the incoming call conversion subscriber in the electronic exchange does not answer or is not answered for more than 15 seconds. Conditional conversion.

While the existing TDX-1A did not limit the number of incoming call transfers, the TDX-10 limits the number of incoming call transfers within the country to prevent the service from being nested unlimitedly and nesting. In the middle of the call, three types of incoming call transfers can be provided in combination, so the call processing is performed unconditionally or during busy and non-answer transfer is performed.

The call forwarding function can be performed in the process of calling a new call, and since nesting is allowed up to 5 times in the country, the call forwarding block can be interworked when calling a new subscriber in all other subscriber services. Signal was processed.

As such, the call forwarding may be nested or received continuously depending on whether or not the called party registers the call forwarding service as the call progresses, and the call is transferred between the first calling party and the last called party. In order to be connected, the final subscriber's information is transmitted to the calling party, which is controlled by the calling party.

In addition, because the call forwarding service should be regarded as a new call, billing and statistics processing should be performed. Therefore, in the concurrent programming, the call forwarding processor simultaneously performs outgoing and incoming calls. I chose to be extinguished.

The effect by the present invention is as follows.

As the exchange system is gradually developed, it is necessary to provide more various services to the subscribers to make it easier and more convenient to use. Therefore, unconditional incoming call is applied to all electronic switching system such as TDX-10 and switched regardless of the subscriber status. The conditional call transfer type of subscriber service, which is switched when the transfer type and the subscriber state do not answer during the busy or non-response time, has the effect of satisfying the subscriber's various convenient service requirements, and the nesting allowance later It is effective to adjust flexibly to adapt flexibly according to marketing strategy.

Claims (6)

A method for controlling the call forwarding function of an electronic switchboard having an ASS including LTAS, LSS, SSS, TCS, and OSS, an INS including NHS, SNS, and CSS, and a CCS including MSS and CAS. In; Receive call request service request and examine the service availability and system status to extract the number to transfer the call when the service is available (1 ~ 5). In the first step, the call transfer service is switched unconditionally regardless of the state, The second step of translating the call during the call and the non-response change is nesting, so whether the switch is cut, counter management and the number are translated (6-12). Step 3, which transmits the switch connection information to the calling party according to the previous switch connection state by checking the switching counter value when there is no response in the waiting state (17-23). A fourth step of transmitting (24 to 32) switch control information due to processing when the call is made and continuous nesting (24 to 32), and outgoing call transfer The relay call process includes a fifth step of checking the switching counter value when no answer is received to transmit the switch connection information to the calling party according to the previous switch connection state and to perform the processing when the call is normally made (33 to 41). A method of controlling an incoming call switching function in an all-electronic exchange. The method of claim 1, wherein the first step includes receiving a call forwarding service request (1) and storing a call forwarding counter for each type when unconditional, busy, or unresponsive (2). (3) a second process of checking whether the system is present within a third process, a third process of checking whether the system is normal (4), and a fourth process of extracting a subscriber number to be transferred to a call (5). Method of controlling incoming call transfer function in electronic exchange. 3. The method of claim 2, wherein the second step includes: a first process of determining the type of incoming call transfer (6, 9), a second process of increasing the transfer counter of the type (8, 10, 11), and an incoming call telephone 12. A method for controlling an incoming call switching function in an electronic switchboard, characterized in that the third translation is performed by a third step of requesting number translation. 4. The method of claim 3, wherein the third step (17) recognizes that the called subscriber is occupied (17) and checks the value of the switch counter when no answer (18) to request the incoming subscriber occupancy notification (19) or the incoming call transfer switch connection request; (20) A method of controlling an incoming call switching function in an electronic switchboard, characterized in that the first process is performed by a second process of receiving a switch connection notification (23). 5. The method of claim 4, wherein the fourth step receives the notification of the incoming subscriber's response (24) reports the initial billing information (25), and transfers the incoming subscriber's response to the calling party (26) in a busy state. The second process, and when the calling subscriber disconnects (27) reporting the incoming call transfer final charge (28) and the call is performed by the third process of releasing the incoming call transfer function control in the electronic switchboard. Way. 4. The method of claim 3, wherein the fifth step (33) recognizes that the outgoing line is occupied (33) and examines the switching counter value (34) when there is no answer (34) requesting notification of incoming subscriber occupancy or connection of the incoming call transfer switch (35, 36). The first process, waiting for a certain time to be notified of the connection of the switch for the outgoing call (37) The second process, after acknowledging the incoming state (38) when the called subscriber responds (39) to report the initial call transfer charge (40) the third process, to notify the calling party's response to the calling party (41) the fourth process to be in a busy state, and when the calling subscriber disconnects (42) to report the incoming call conversion final charge (43) The incoming call switching function control method in the electronic switchboard, characterized in that performed by the fifth process of releasing.