KR950012586B1 - An electronic exchanger - Google Patents

Abstract

a subscriber switch connection sub-system having a LTAS for controlling a match of the subscriber with an arbitration line, a LSS for controlling a time division switch, a SSS for transmitting and receiving R2 multi frequency code and a dual tone multiple frequency and generating a signal sound, a TCS for controlling a basic call process, and an OSS for processing a specific service call; an internal connection network sub-system having a NHS for performing a number translation and a routing process, a SNS for controlling a space switch, conference call unit, and a various of recoding information unit, and a CSS for controlling a network synchronization and the space switch; and a central control sub-system having a MSS for collecting statistic data and a CAS. The method comprises the steps of dialing a camp-on busy cancellation code by a subscriber who subscribes a camp-on busy service and a camp-on busy cancellation service; making a phone call to other subscriber who is needed to call; if the number is busy, holding the other subscriber by hooking-up during busy tone by the subscriber who subscribes the camp-on busy cancellation service; dialing the cancellation code; hooking-up again; completing to make phone call to the other subscriber; even in case of the busy tone, if the third subscriber calls the subscriber who subscribes the camp-on busy cancellation service, even though the camp-on busy service is registered, cutting the call by giving a music song sound to the subscriber who requires a reception call, without performing the camp-on busy service; and in case that the subscriber finishes to make the phone call and puts down a telephone receiver, completing the camp-on busy cancellation service.

Description

Call waiting cancellation service method in electronic exchange

1 is a block diagram of an electro-exchanger subsystem to which the present invention is applied.

2 is an overall flow chart in accordance with the present invention.

3 is a flowchart illustrating a call waiting cancellation service initiation process in an outgoing state according to the present invention.

4 is a flowchart illustrating a call waiting cancellation service initiation process in a call state according to the present invention.

5 is a flowchart illustrating a call waiting cancellation service process according to the present invention.

6 is a flowchart illustrating a call waiting cancellation service termination process according to the present invention.

* Explanation of symbols for main parts of the drawings

1: subscriber exchange subsystem (ASS)

2: Internal Network Subsystem (INS)

3: central control subsystem (CCS)

4: Time Division Switch Control Subsystem (LSS)

5: subscriber and trunk line matching subsystem (LTAS)

6: Signal transmission and reception subsystem (SSS)

7: Call processing control subsystem (TCS)

8: Special Service Control Subsystem (OSS)

9: Number Translation and Routing Processing Subsystem (NHS)

10: space switch and call switch resource management subsystem (SNS)

11: Synchronizer and Space Switch Control Subsystem (CSS)

12: Statistics data collection management subsystem (MSS)

13 billing information processing subsystem (CAS)

The present invention relates to a call waiting cancellation service method among subscriber special services provided in an electronic switching system.

Although the call-waiting service function is provided in the conventional exchange, there is a problem that this service is provided unconditionally even when the subscriber does not want the call-waiting service when making an important call or transmitting data.

The present invention devised to solve the above problems, the subscriber can reject the service provided unconditionally regardless of their intention, call waiting in the electronic switchboard to provide a more diverse and convenient service The purpose is to provide a cancellation service method.

In order to achieve the above object, the present invention, LTAS for controlling the matching of the subscriber's relay line, LSS for controlling the time division switch, R2 MFC (Multi Frequency Code) and DTMF (Dual Tone Multiple Frequency) signal transmission and generation of a tone A subscriber exchange access subsystem (ASS) including an SSS, a TCS for controlling basic call processing, and an OSS for controlling special service call processing; An internal network subsystem (INS) including NHS for number translation and routing processing, SNS for controlling space switches and conference call devices, and SNS for controlling various recording guidance devices, CSS for controlling manipulators and space switches; A call waiting cancellation service method of an electronic switchboard having a central control subsystem (CCS) including an MSS for collecting statistical data and a CAS for billing processing, wherein the call waiting service and call waiting cancellation are performed when idle. The subscriber who registered the service picks up the handset, dials the call waiting cancel code, dials the other subscriber's number to call, and if the call is busy, the subscriber who registered the call waiting service and call waiting service is hooked during the call. A first step of suspending the other subscriber, dialing the call waiting cancellation code, and then hooking again to talk to the other subscriber; After performing the first step, if a third subscriber calls a subscriber who has initiated the call waiting cancellation service in the busy state, even if the call waiting service is registered, the incoming subscriber who requested the call without performing the call waiting service A second step of causing the speaker to hear the chords; And a third step of terminating the call waiting cancellation service together with the truncation process for the call when the subscriber who started the call waiting cancellation service ends the call and hangs up the phone after performing the first step. do.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention;

1 is a schematic diagram of an electronic switchboard required to perform a call waiting cancellation service. The ASS (1) subsystem series includes a time division switch control subsystem (LSS) 4 and a subscriber and trunk line matching subsystem (LTAS) 5. Subsystem (SSS) 6 for transmitting and receiving R2 MFC (Multi Frequency Code) and DT MF (Dual Tone Multiple Frequency) signals and generating various tones, and Subsystem (TCS) for controlling general call processing (7) , And subsystems (OSS) 8 that control various special service call processing, and INS (2) subsystems include subsystems (NHS) 9 that handle number translation and routing, spatial switches and recordings. Subsystem (SNS) 10 for managing the guidance device and conference call device, and subsystem (CSS) 11 for controlling the manipulator and the space switch belong. In addition, the CCS (3) subsystem has charges based on talk time, duration, and distance for the MSS 12, which collects, analyzes, and outputs various statistical data generated during operation of the exchange. A subsystem 13 for generating billing information for providing the subscriber information and providing the billing information to the subscriber or included in the magnetic tape MT or the disk belongs. The subsystem OSS 8 receives the call control request from the subsystem TCS 7 to control various processes for call waiting cancellation service and requests the remaining subsystems the necessary processing.

2 is a schematic overall flow diagram of a call waiting cancellation service process.

For the sake of convenience, the subscriber to call waiting and tonghwa waiting canceling service is called the subscriber C who called the subscriber A when the subscriber B, A and subscriber B were on the phone. It is called.

Call waiting service may be initiated as soon as the subscriber picks up the phone, or may request service start after the other subscriber is put on hold while talking to the other subscriber.

When the service is started, the call state is examined (20) and if the call state is idle, subscriber A picks up the phone (21), hears the dial tone (22) and dials the call cancel code (23), this information. Is stored in the database, from which the call cancellation service is started (24). At this time, if subscriber A dials subscriber B number (25), if subscriber B is called by performing normal call processing (26), if recipient B responds (27), subscribers A and B make a call.

In addition, when subscriber A and subscriber B make a call and subscriber A hooks flash (28), a dial tone is connected to subscriber A (29), and when subscriber A dials the call cancel code (30), The information is stored in the database, from which the call waiting service is started (31). At this time, if subscriber A hooks a flash (32), subscriber A and subscriber B will talk again.

Then, when subscriber A and subscriber B are talking and third party C calls subscriber A (33), it checks whether subscriber A is available (34), and disconnects subscriber C if it cannot be reached. (35) If the incoming call is possible, check whether the call waiting service is registered (36). If the call waiting service is not registered, the subscriber C is also disconnected (37). If the call waiting service is registered, it is checked whether the call waiting cancellation service is started (38). If the waiting cancellation service is not started, the call waiting service is processed (39). In addition, if the call waiting cancellation service has been started, the subscriber C is disconnected without providing the call waiting service (40), and the subscribers A and B continue to talk.

When the subscriber A who finished the call puts down the handset (41), the call waiting cancellation information stored in the database is deleted and the call waiting cancellation service is terminated (42). Processing is performed (43), and this service is terminated with a change to the idle state.

Detailed processing is described in the following FIGS. 3 to 6. 3 is a flowchart of initiating a call waiting cancellation service in a dormant state.

Call waiting and call waiting canceling service registration When subscriber A picks up the phone (51), the LTAS subsystem detects it and notifies the TCS subsystem and the TCS subsystem connects the dial tone to the SSS subsystem. (52). When subscriber A dials the first digit (53), the SSS subsystem truncates the audible sound (54), and when receiving a digit from subscriber A again (55), the NHS subsystem analyzes the digit (56), If it is the number of subscriber B, normal call processing is performed so that subscriber A and subscriber B make a call (57).

As a result of the analysis by the NHS subsystem, when the subscriber A dials the call waiting cancellation service request code, it is checked whether the call waiting function is registered (58), and if not, the SSS subsystem is registered. Speaks with an error tone and causes subscriber A to drop the call (59). If it is registered, it checks again whether the call waiting cancel function is registered (60), and if not, the SSS subsystem returns an error. The subscriber A disconnects the call 61 by sound and terminates this service.

If registered, the call waiting cancellation information is stored in a database, and the call waiting cancellation service is started from this time. (62) And, the SSS subsystem informs subscriber A of a special ring tone to indicate that the call waiting service has been successfully initiated and can be dialed (63). At this time, if subscriber A dials the first dial (64), the SSS subsystem cuts the special ring tone (65); if it continues to dial subscriber B's number (66), the NHS subsystem analyzes the number (67). Calling the called party B and performing normal call processing connecting the call path between the subscriber A and the subscriber B (68). When the subscriber B responds (69) when the LTAS subsystem receives the call signal, the subscriber A and the subscriber B talk to each other.

4 is a flowchart of initiating a call waiting cancellation service in a bilateral call state.

Call Waiting and Call Waiting Canceling Service Registration When a subscriber A makes a hook flash (80) and detects it in the LTAS subsystem, the call processing control is transferred to the OSS subsystem, and the SSS subsystem is When subscriber A dials the first digit, the SSS subsystem cuts the dial tone, and after analyzing the digits dialed by the NHS subsystem, if the call waiting request is canceled (83), the call waiting service and call waiting service are canceled. Investigate whether the subscriber is a registered subscriber (84), if not registered, the SSS subsystem connects subscriber A with an error tone (85) to inform them that they cannot receive the service, and subscriber A resumes hook flashing (86) If the subsystem detects this, the SSS subsystem disconnects the error sound that was connected to subscriber A (87), and if it is connected to subscriber B, it is holding the pending sound. (88), the LSS, CSS and SNS subsystem connects the call path between subscriber A and subscriber B (89), so that subscriber A and subscriber B talk to each other again, and call processing control goes to the TCS subsystem. Is transferred.

In the case of the call waiting service and the call waiting cancellation service registration writer, the call waiting cancellation information is stored in a database, and the call waiting cancellation service is started at this time (90). A confirmation tone is issued to A to indicate that the call cancellation service has been successfully started (91). When subscriber A hooks flash (92) and the LTAS subsystem detects it, the SSS subsystem disconnects the confirmation tone that was connected to subscriber A (93), and cuts off the pending sound that was connected to subscriber B (94). In the LSS, CSS and SNS subsystems, 95 connects the call paths between subscriber A and subscriber B, subscriber A and subscriber B talk back to each other, and call processing control is transferred back to the TCS subsystem.

5 is a flowchart of a call cancellation service processing performed when a third subscriber calls a subscriber who has initiated call waiting cancellation service.

The subscriber A who initiated the call waiting cancellation service through the process of FIG. 3 or 4 is calling or receiving the call with the subscriber B (100). When a call is requested by dialing the number (101), the TCS subsystem checks whether the subscriber is blocked or is not available because the call is blocked or in the middle of a call (102). (103).

If the subscriber is available, the subscriber checks whether the subscriber has registered services such as unconditional call transfer, missed recording guidance, and rejection recording guidance having higher service priority than call waiting service (104). The subsystem handles the service (105), if not registered, checks if subscriber A is busy (106), performs normal incoming processing if idle (107), and conditional call transfer service if busy. Investigate whether it is registered (108). At this time, if the MOF transfers the registered call forwarding service, the OSS subsystem handles the service (109). Investigate whether or not the call waiting service is registered (110), and if not, perform a truncation process (111), and if it is registered, check whether the call waiting service is started again (112). If not initiated, the OSS subsystem handles call waiting service (113). If initiated, the SSS subsystem connects subscriber C with a ring tone, causing subscriber C to disconnect (114). B continues to talk.

5 is a flowchart illustrating a call waiting cancellation service termination process.

When the subscriber A who initiated the call waiting cancellation service through the process of FIG. 3 or 4 completes the call and completes the call and hangs up the receiver (120), the LTAS subsystem detects this and notifies the TCS subsystem. The TCS subsystem causes the LSS, CSS, and SNS subsystems to disconnect the switch between subscriber A and subscriber B, charges the call to the CAS subsystem (121), and the subscriber B to the SSS subsystem. To cut the chord sound to cut (122). Further, the call waiting cancellation information stored in the database is deleted (123), and the state of the subscriber A is changed to the resting state, thereby ending the call waiting cancellation service. In addition, in FIG. 3, when subscriber A initiates the call waiting cancellation service, when subscriber B dials the number of subscriber B and fails to make a call, similarly, subscriber A cuts the call and stores it in the database. Deletes the call waiting cancellation information, which terminates the call waiting cancellation service.

The call waiting service informs subscriber A by listening to the call waiting tone when a third party makes a call while the subscriber who registered the function is calling. When subscriber A hooks flash to receive call waiting service, the call is called. It is a convenient service to hold the other party B who was making a call and talk to the third party C, and then hook flash again to continue the call between the two subscribers, or to make an important call or to transmit data. In the case of a call that does not want to receive the standby service, the waiting tone is connected unconditionally, so it may damage the subscriber.

Therefore, in the present invention, the subscriber who registered the call waiting service and the call waiting cancellation service, if desired, picks up the telephone, dials the call waiting cancellation code, and then calls the called subscriber or hooks that the call is already being made. The call waiting service is not provided to the subscriber who is holding the other subscriber and dialing the call waiting cancellation code and hooking again, thereby providing more various and convenient services to the subscriber.

Claims (5)

LTAS (5) to control subscriber and relay line matching, LSS (4) to control time division switches, R2 Multi Frequency Code (MFC) and Dual Tone Multiple Frequency (DTMF) signals, and SSS (6) to generate beep A subscriber exchange access subsystem (ASS) 1 comprising a TCS 7 for controlling basic call processing and an OSS 8 for controlling special service call processing; Internal network subsystem including NHS (9) for number translation and routing processing, SNS (10) for controlling space switches and conference call devices, and SNS (10) for controlling various recording guidance devices, and CSS (11) for controlling manipulators and space switches. (INS) 2 and; A call waiting cancellation service method for an electronic edifier that has a central control subsystem (CCS) 3 including an MSS 12 for collecting statistical data and a CAS 13 for billing processing, the idle state If the subscriber who registered call waiting service and call waiting waiting service picks up the handset, dials the call waiting cancel code and dials the desired status of the calling party, if the call is busy, the call waiting service is busy. A first step (20 to 32) in which a subscriber who has registered a waiting cancellation service makes a hook flash during the call to hold the other subscriber, dials the call waiting cancellation code, and then hooks again to talk with the other subscriber; After performing the first step (20 to 32), if the third subscriber calls the subscriber who initiated the call waiting cancellation service in the busy state, even if the call waiting service is registered, the call waiting service is not performed. A second step (33 to 40) for making a call sound to the called subscriber who has called for the incoming call; And a third step of terminating the call waiting canceling service together with the truncation process for the call when the subscriber who started the call waiting canceling service ends the call and hangs up the phone after performing the first steps 20 to 32 ( 41 to 43), the call waiting cancellation service method in the electronic switch, characterized in that it comprises a. 2. The idle call waiting cancellation service initiation of the first step (20 to 32) is performed by the NHS (9) when the idle subscriber picks up the handset and dials the call waiting cancellation code. A fourth step (50 to 63) in which the SSS hears a special dial tone in the SSS and stores the call waiting cancellation information and starts a call waiting cancellation service if the subscriber is examined and is a legal subscriber; And a fifth step (64 to 69) of calling the subscriber who wants to talk by the subscriber who has heard the special dial tone after performing the steps (50 to 63). Cancellation service method. The method of claim 2, wherein the fourth step (50 to 63), if the subscriber A in the dormant state is off, the LTAS (5) detects it and notifies the TCS (7) and the TCS (7) When the subscriber A dials the first digit to the SSS 6 and the subscriber A dials the first digit, the SSS 6 cuts the dial tone and receives a digit from the subscriber A again, and the NHS 9 analyzes the digit. If it is the number of subscriber B, performing normal call processing, where subscriber A and subscriber B call (50 to 57); As a result of analysis by the NHS, when the subscriber A dials the call waiting cancellation service request code, it is checked whether the call waiting function is registered, and when it is not registered, the SSS 6 gives an error sound. The subscriber A disconnects the call, and if it is registered, checks whether the call waiting cancel function is registered again. If not, the subscriber A hears an error tone from the SSS (6). Cutting 58 to 61; And if the call waiting cancellation service is registered, the call waiting cancellation service is stored in the database, and the call waiting service is successfully started by giving a special ring tone to the subscriber A in the SSS (6). And (62, 63) informing that the user can turn the dial. The method of claim 1, wherein the call waiting cancellation service starts in the busy state of the first step (20 to 32), when the subscriber who is on the phone dials the call waiting cancellation code after holding the counterpart subscriber by hook flashing. Checking whether the subscriber is a legitimate subscriber (80-84); After performing the steps 80 to 84, if the subscriber is not a legal subscriber, the SSS 6 gives an error sound to the subscriber, and if the subscriber has a hook flash, calling the pending subscriber again (85 to 89). ; And after performing the steps 80 to 84, if the subscriber is a legitimate subscriber, stores call waiting cancellation information, connects a confirmation tone to the subscriber in the SSS 6, and calls back to the subscriber who was on hold by hook flashing the subscriber ( 90) to (95) a call waiting cancellation service method in an electronic switch, characterized in that it comprises. 2. The method of claim 1, wherein the second step (33 to 40) comprises: (100 to 102) checking whether the subscriber is available in the TCS (7) when the incoming call request to the subscriber in the outgoing or incoming call; After performing the steps 100 to 102, if the incoming call is not possible, the processing is disconnected. If the incoming call is possible, the service is registered by checking whether a special service such as call transfer is unconditionally registered and processing and registering the OSS (8) DPTJ corresponding service. If not, checking whether the call is being received (103 to 106); After performing the steps 103 to 106, if the call is busy, normal call processing is performed. If the call is busy, the OSS 8 processes and registers the service if the conditional call transfer service is registered. If it is checked whether the call waiting is registered (107 to 110); After performing the steps 107 to 110, if not registered, the disconnection process, and if registered, the call waiting cancellation service is started by checking whether the SSS (6) disconnects the third subscriber and continues to talk, And if not initiated, the OSS (8) processing (111-114) a call waiting service.