KR960013264B1 - Service switching point - Google Patents

Abstract

The method allows the service user and the subscriber to use service switching point(SSP) by implementing the function of contracting phone number and retrying reception number. The method comprises the steps of: requesting allocation of R2/DTMFR signalling apparatus; discriminating call types; finding the signalling number & its priority to request redialing; inquiring the digits collected to protect the actual reception number from the SCP in case of contraction number and processing call of the contraction number; and processing retrial call due to unavailability of retrial and reception status by the service user.

Description

Speed Dial and Retry Method of Credit Call Service

1 is a structural diagram of an intelligent network service exchange.

2 is a diagram of an internal service call processing structure of an intelligent network service switch.

3 is a flowchart illustrating a shortcut number and retry processing of a credit call service according to the present invention.

The present invention relates to a method for implementing a short number and a called number retry function of a credit call service performed in an intelligent network service exchange.

Existing exchanges provided only simple voice service. Currently, only 700 services are provided by using the database of the exchange. However, when a service request occurs from a service user, all calls are routed to the exchange that provides 700 services. The circuit congestion phenomenon has occurred poorly, and since only the exchange-centered service is provided, it is difficult to provide a service that satisfies the service provider and the service user due to the lack of various functions of the service.

Accordingly, an intelligent network service switcher (SSP), which interconnects existing telephone networks, integrated telecommunication networks, and intelligent networks in order to establish a technical foundation for early settlement of advanced information society by spreading and distributing various intelligent network services at an early stage. Has been developed, and the speed dial and retry functions are needed to provide convenience to the service users and subscribers.

Accordingly, an object of the present invention is to provide a method for implementing a short number and a called number retry function, which are new functions to a currently developed credit call service.

In order to achieve the above object, the present invention requires the R2 / DTMFR signaling device to recognize the hook-off of a relay line occupant / subscriber and receives a digit from the calling exchange / sending subscriber with the digits collected. After the first step of determining, and after performing the first step, if the type of call is a credit call service call, obtain the calling number and calling grade, and look up the password from the user, if the password is appropriate, enter the called number and restart the speed dial or restart In the second step of determining whether the function is required, and after performing the second step, if the shortcut number function is requested, the collected digits are inquired and if the registered shortcut number is registered, the actual called number is collected from the SCP and routed to the called party. A third step of performing a call processing of a shortcut number by proceeding with a call, and a restart function after performing the second step;

If this is required, a fourth step of performing call processing of the retry by the service user and the retry due to the incoming state unavailable.

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

Figure 1 shows the addition of a new subsystem ATHS 31 (application service element and question and answer function application subsystem) and ISS 35 (Intelligent Network Service subsystem) to the existing electronic switch. The overall structure diagram of the SSP.

The SSP basically has three subsystems: CCS 10 (central control subsystem), INS 20 (connection network subsystem), and ASS 30 (switched subsystem).

CCS (10) is a subsystem that performs the overall MA (operation and maintenance) function of the system, and provides system-level maintenance management, fault control management, serious and fault handling functions, billing, measurement and statistics, and operator registration. And INS (20) is located in the middle of the system and the ASS (30) black is connected between ASS (30) and CCS (10). It performs the operation of configuring a call path between the ASS (30) using a space switch (S-switch), the provision of recording guidance information to the subscriber or the configuration of a multi-call connection path. ASS (30) is equipped with subscriber and trunk line interface, time switch (T-switch), various signaling devices, etc. to perform most call processing functions, self operation and maintenance functions, etc., if necessary in units of ASS (30) It has a horizontally distributed structure that can be increased. The transmission medium with the INS 20 is an optical link, which is called a data link.

In addition, the ISDN digital subscriber interface, SS No.7 (No.7 signaling) signaling device, Packet Handler (packet execution) function, network interlock function, etc. Enable the function. The original ASS 30 exists as one, but at the application stage ASS-S (subscriber), ASS-T (trunk), ASS-S / T (subscriber / trunk), ASS-7 (SS No, 7), ASS Required combinations such as -P (packets) may appear.

The newly added ATHS 31 is a subsystem that performs SS No. 7 protocol function for communicating with a service control system (hereinafter referred to as SCP) to process an intelligent network service, and the ISS 35 is a specific system. It performs intelligent network service processing, billing processing related to service call, traffic control management and service exchanger maintenance and operation management.

The SMHS 32 (Signal Message Execution Subsystem) performs the MTP (Message Transfer Unit) and SCCP (Signal Connection Control) functions to transfer the signal units in SS No. 7, and the LTAS 33 (Line and Trunk). Access subsystem) mainly performs monitoring, control and test functions of subscriber and trunk line interface, and control system is redundant by load balancing method. The SSS 36 (Signal Service Subsystem) generates a DTMFR (Dual Tone Multi-Frequency Receiver), an R2 MFC (Multi-Frequency Compelled), a Continuity Clleck Tone (CCT), and various tone signals and transmits them to a time switch. Performing the detection function, the TCS 34 (traffic control subsystem) has the function of controlling and overseeing all performance of the call, i.e., call establishment, call monitoring and truncation, and TDIS 37 (telephone data network). Subsystem) performs the interworking function with the data call of the telephone switching network. The CSS 23 (Central Switching Subsystem) has a spatial switch in the T-S-T switch structure, which includes spatial switch connection control, network synchronization and data linking with the ASS (30) or CCS (10). The INCS 21 (connection network control subsystem) performs the search, connection, and disconnection control functions of the T-S-T switch through the call, and also performs maintenance functions such as call tracking and routing. After receiving the number translation request from the ASS 30, the NTCS 22 (number translation control subsystem) notifies the processor of the number translation result, and performs a route control function for the network management function. In addition, various faults collected in ASMS 38 (exchange maintenance subsystem), INMS 24 (connection network maintenance subsystem), CCMS 13 (central control maintenance subsystem), etc. (12) Reported to Operational and Maintenance Control Subsystem. Here, the grade of the fault is determined to generate an alarm, and an output message is sent through the MMCS 11 (operator-machine communication subsystem).

2 is a schematic diagram of an intelligent network service call processing structure of an SSP. The intelligent network service request code dialed by a calling subscriber (Hook-Off: hereinafter referred to as H / off) is routed from a calling station to a service exchange after translating a station number.

By monitoring the relay line operation status at the TU (3) (trunk unit) of the SSP, a change in the state of the relay line (i.e. incoming trunk occupancy request) occurs, or the subscriber state is detected at the ASU (3) (subscriber unit) of the SSP. If a state change occurs, report it to BCPP (2) (Basic Call Processing Unit). In BCPP (2), Signaling Conn. (6) (Signal connection) is the Speech Path Conn. (8) In order to receive the digits and the necessary information from the incoming line of (Call to), the R2 device occupancy and the switch path connection for R2 must be established. (8) requires. Speech Path Conn. Requires TSWU (4) (time switch unit) to connect signaling device and T-switch and occupy R2 equipment with G / LSU (5) (global and local service unit). Do Signaling Conn. Is ready to receive digits from the signal equipment. (6) You will be informed. The R2 signal is transmitted to the G / LSU 5 via the TU 3 and the TSWU 4. The transmitted R2 signal detects a digit at the G / LSU 5 and transmits the digit to the Digit deception 7 (digit receiver). Digit Reception (7) recognizes the intelligent network service and additionally displays digits and necessary information to perform processing corresponding to incoming billing service, credit pass service, and so on. (6) After collecting all the digits and the necessary information, the ISCP (1) (Intelligent Network Service Control Unit) is notified of a specific intelligent network service (such as a billing service or a credit call service).

The ISCP 1 requests the BCPP 2 for information such as calling number and calling grade and receives the information. BCPP (2) of the ASS-S / T (100) informs the ISCP (1) and the calling party of the incoming status (B7), and requests the R2 path disconnection and the call connection. Control @ Analysis (9) (Control and Analysis) of ISCP (1) analyzes intelligent network service calls using various trigger tables to identify and determine the service, and checks the validity of service request and whether the service is provided. If possible, to the FP-ASE 10 (call forwarding application element) in the case of a billing service, the CC-ASE (11) in the case of a credit passing service, so that the service control system performs the qualification check and routing information translation. Communicate information to (credit call service element). The ASE generates an operation with the information received from the Control @ Analysis of the ISCP, configures a component thereof, and delivers it to the TCAP 13. The TCAP 13 constructs a TCAP 13 message using the information received from the FP-ASE 10 or the CC-ASE 11 and transmits the TCAP 13 message to the BCPP 15 of the ASS-7 101.

The BCPP 15 of the ASS-7 (101) processes the SCCP 23 (signal connection control unit) and the MTP 22 (message forwarding unit) of SS No. 7 as a part of the TCAP (13) received from the ISCP (1). Pass the message to the service control system. At this time, the signaling data link between the service switch and the service control system is established by the Speech Path Conn. Nailed-up Path (designated path) in the form of T-S-T (16-17-20) formed by (8) is used. It receives the result from the service control system and delivers the TCAP 13 message to the ISCP 1. It checks the error and transaction status of the TCAP 13 message received from the service control system, configures a component for this, and delivers it to the FP-ASE 10 or CC-ASE 11. The FP-ASE 10 or CC-ASE 11 performs decryption function on the parameter of the component received from the TCAP 13 by referring to the operation and error definition, and transfers the decrypted information to the Control @ Analysis (9). To pass. Control @ Analysis (9) analyzes the information received from FP-ASE (10) or CC-ASE (11) and requests service call connection to BCPP (2) if intelligent network service can be provided.

It receives the actual called number from BCPP 2 in ASS-S / T 100 and requests the number and route translation to BCPP 21 in INS 102. The INS 102 translates the number, notifies the ASS-S / T 100 of the number translation result, and requests the occupancy of the called party. Then, the space switch 17 in the INS 102 is used to form a call path. It requests Ring Back Tone connection from the calling party and connects Ring to the called party. The called party receives the response notification, notifies the calling party of this fact, and informs the ISCP 1 of the incoming response notification. When the calling subscriber sends a omni-directional recovery signal from the calling party to the called party by hook-on (H / on) during the intelligent network service call, the called party recognizes the omni-directional recovery signal and sends ASS-S / T ( The trunk line omni-directional cut request is sent to BCPP (2) of 100). BCPP (2) of ASS-S / T (100) requests to release incoming billing service to ISCP (1), disconnects S / T-Switch (4, 17) to outgoing subscriber's call and calls ASS-T ( The calling party disconnect notification is sent to BCPP 18 of 104 and ends. The BCPP 18 of the called party ASS-T 104 also disconnects the time switch 20, and the ISCP 1 sends the charging information to the CCS 103 for billing processing.

3 is a flowchart for performing a shortcut number and a retry function of a credit call service of an electronic switching SSP.

When an intelligent network service call is requested by the user (301), when a subscriber origination request or a relay line occupancy request is received (302), the calling party signaling device is allocated (3) to collect digits (304). Service identification and number translation 305 are performed using the collected digits to determine the call type. If the type of call is a general call, the general call processing 306 is performed and the call ends (307). In the case of the intelligent network service call, the intelligent network service number is determined from the database in which the intelligent network service related information is stored, and the requested service type is determined by comparing the retrieved intelligent network service number with the collected digit 304. . If the service type is a call forwarding service, the call forwarding service call processing process (309) is performed and the call is terminated (310). In the case of a credit call service, an additional credit number is received from the calling party (311) and the ISCP (FIG. 1) request 312 a credit call service. Requesting caller ID and calling grade from ISCP (1 of FIG. 2) (313), requesting caller ID as calling party (314), receiving caller ID (315), calling caller ID as calling party (316) Received (317). Send the received calling number and calling grade to the ISCP (1 in FIG. 2) to request information about the service processing to the SCP (318) and receive a password request (319) from the ISCP (1 in FIG. 2) to receive the G / LSU. By transmitting the DTMFR connection request 320 and the password input announcement broadcast connection request 321 (FIG. 2), the announcement is transmitted (322). Receiving a password from the subscriber (323) and notifying the password to the ISCP (1 in FIG. 2) (324), the ISCP (1 in FIG. 2) sends this message to ASE (12 in FIG. 2) and TCAP (13 in FIG. 2). Through the protocol processing, a command providing operation is generated to the SCP through the SS No. 7 network (325).

The service control system sends the information regarding the processing of the credit pass service to the SSP through the SS No. 7 protocol processing procedure, and receives the response to the command providing operation for the credit call service (326) and the credit number exists (327). If not, the user transmits an unregistered credit number announcement to the user (328) and ends the call through the hook-on (H / on 329) of the call line (330).

If there is a credit number (327) determines whether or not a suitable password (331) and if it is inappropriate transmits a password non-compliant announcement to the user (332) and ends the call through the H / on (333) of the call line (334) . If the password is appropriate, the incoming call number request is received from the ISCP (1 of 2) (335) and the incoming call number input announcement broadcast connection request (336) is transmitted to the G / LSU (5 of FIG. 2). 337). Receiving the incoming number from the subscriber (323) performs a speed dial number function 339 in the case of a shortcut number, and performs a retry function (340) in the case of a retry.

Hereinafter, the speed dial function and the retry function will be described in detail.

The shortcut number function 339 compares the number of collected digits (401), collects additional digits (402) when the number of collected digits is more than two, and notifies the called number to the ISCP (403). The ISCP causes this message to generate a command providing operation (404) to the service control system through the SS No. 7 network through ASE and TCAP protocol processing. The service control system sends the information related to the credit call service to the SSP through the SS No. 7 protocol processing procedure, and receives a response to the command providing operation for the credit pass service (405) to provide the credit call service (406). If this is impossible, the user transmits a broadcast service for disabling the credit call service to the user (407), and terminates the call through the H / on (408) of the calling line (409).

When it is possible to provide a credit call service, a request for connection of a credit call service call is received from the ISCP (410) to perform a normal service processing function. When the number of collected digits is less than 2, the collected digits are compared (411), and when the collected digits are larger than 15, the service announcement is broadcasted to the user (412) and the call is made through the call line H / on (413). End 414. When the collected digit is less than 15, the ISCP is informed that it is a shortcut number (415), and the ISCP generates a command providing operation to the service control system through the SS No. 7 network through ASE and TCAP protocol processing (416). do. The service control system sends the information about the credit call service to the SSP through the SS No. 7 protocol processing procedure, and receives a response to the command providing operation for the credit call service (417) to determine whether to provide a shortcut number. 418). If the speed dial number is not registered, an unregistered speed dial number announcement is sent to the user (419) and the call is terminated through the call line H / on (420) (421).

When the speed dial number is provided, it is determined whether the credit call service is provided (422). If the speed dial number is not provided, the service is not processed. 424) is transmitted to the G / LSU and the called number translation (425) is performed. Notify ISCP about the call result for the called number translation result (426), construct the call path (428) through routing process (427), assign signaling device to the called party (429), and connect signals and rings between stations. (430). Charging starts 432 with the incoming subscriber's H / off 431 and a call 433 is made between the subscribers. The service call charging is terminated through the H / on 434 of the calling line (435), and the call is released (436) to terminate the call (437).

The method of performing the retry function 340 determines whether retrying is performed by the service user (501) and continues to collect 502 digits when the retry is not performed by the user to perform the processing after collecting the called number. If the retry is required, the number of retries is compared (503). If the number of retries is exceeded, that is, more than two times, a service broadcast announcement is broadcast to the user (504) and through the H / on (505) of the transmission line. The call ends (506). If the number of retries is not limited, a request for retries by the user is transmitted to the ISCP (507), a caller ID request (508) is received again from the ISCP, and a call for re-enter the number for the caller by the user is sent (509). Then, the incoming number is received (510) and re-determination (511) whether or not to retry by the service user and the process for this is repeated as above.

If a retry is not required by the user, the called party number is transmitted to the ISCP (512), and the ISCP generates a command providing operation to the service control system through the SS No. 7 network through ASE and TCAP protocol processing (513). )

The service control system sends the information about the credit call service to the SSP through the SS No.7 protocol processing procedure, and receives a response to the command providing operation for the credit pass service (514) to determine whether to provide the credit call service. (515). If the credit call service is not available, the call is broadcasted to the user for a non-call service announcement (516), and the call is terminated through the H / on (517) of the calling line (418).

If the credit call service is available, the request for connection to the credit call service is received from the ISCP (519), the DTMFR release request is transmitted to the G / LSU (520), and the called number translation (512) is performed. In addition, the ISCP informs the call type about the result of the translation of the called number to the ISCP (522) and determines the unavailable state of the incoming call through the routing process (523) (524).

If the incoming call is not available, the busy line is busy, the called party is busy or the called party number is missing (525). The announcement is broadcast (526) for service unavailable and the call is terminated through the H / on (527) of the calling line (528). If the incoming call is unavailable, the busy line is busy, the called party is busy or the called party number is 525, the number of retries is compared (529). The broadcast is transmitted (530) and the call is terminated (532) via the H / on (531). If it is not limited to the number of retries (529), send the retry request (533) due to the incoming state to the ISCP and receive the incoming number request from the ISCP (534) to send the DTMFR and announcement connection request to the G / LSU (535,536).

In the case of re-input due to the incoming unavailability state, the DTMFR equipment is repeatedly connected and disconnected in order to increase the use efficiency and service reliability of the DTMFR equipment. The reception number re-entry announcement broadcast due to the incoming state is transmitted to the user (537), the incoming number is received (510) and re-determined whether or not to retry by the service user (511) to repeat the process. If the call is possible, a call path is configured (538), a signaling device is allocated to the called party (539), and the signal and the ring between stations are connected (540). Charging begins 542 with the hook-off (H / off) 541 of the called party and a call 543 is made between the subscribers. The service call charging is terminated through the H / on 544 of the calling line (545), and the call is released (546) to terminate the call (547).

As described above, the present invention provides a voice of various terminations as described above to perform intelligent network service recognition, information collection, service control, service call processing, operation management and maintenance in order to provide users with various newly required intelligent network services. With the ability to guide and collect additional information, allocating various signaling equipment can provide credit call service using the speed dial number registered by the service subscriber when entering the called number in the credit call service. This function provides a method for realizing the function of receiving a credit call service call by re-entering the called number or re-entering only the called number when the incoming call is not available.

Accordingly, the present invention is carried out as described above, by implementing an intelligent network service exchanger, which is an element of the intelligent network, to the electronic switchboard, to provide new subscribers such as billing service, credit pass service, etc. to the various subscribers, the hardware of the electronic switchboard. The voice billing function, additional information collection function, service control and call processing function can be added by changing the software without changing the hardware. By implementing the speed dial function and the retry function in the credit call service, the user's convenience is provided and new functions are provided to various subscribers. There is an effect that can be developed.

Claims (4)

An Access Switching Subsystem (ASS) (1) which performs a distributed call processing function, including an intelligent network service control unit (4) having a service processing unit for managing the intelligent network service and a protocol processing unit for managing communication with the SCP; Interconnection Network Subsystem (INS) (2) that performs centralized call processing functions, and Central Connection Subsystem (CCS) (3), which provides centralized functions of operation and maintenance. In the speed dial and retry method of the credit call service applied to the intelligent network service exchange, if the hook-up of the relay line occupant / subscriber is recognized, the R2 / DTMFR signaling device is allocated and the digits are received from the originating exchange / sending subscriber. A first step of determining a call type with the collected digits upon reception; and after performing the first step, the call type is a credit call service hoi The second step of determining whether the speed dial number or the restart function is required by receiving the incoming number if the password is appropriate by obtaining the calling number and the calling grade and searching the password from the user. If this is required, the third step of performing the call processing of the speed dial number by querying the collected digits and proceeding with the call by routing to the called party by defending the actual called number from the SCP in the case of the registered speed dial number, and the second step After the execution, if the restart function is required, the speed dial and retry method of the credit call service comprising a fourth step of performing a call processing of the retry by the service user and the retry due to the unavailable state . The method of claim 1, wherein the second step further includes a first process of receiving a credit number from the field new country and requesting a credit call service to process a calling number and calling grade, and connecting a DTMFR connection request and a password input announcement broadcast. The second process of sending a request to send an announcement and receiving a password from the subscriber and notifying the password to the ISCP, and inspecting the information on the processing of the credit call service, and if the credit number does not exist, to inform the user of the unregistered credit number announcement. If the outgoing call number is present, the third step of determining whether the password is appropriate, and if the password is inappropriate, send out an inappropriate announcement, and if the password is appropriate, the incoming call number input announcement is sent, and the called number from the subscriber A fourth step of receiving and examining whether a shortcut number or retry function is required; Speed dial and retry the method of credit call service featuring one. The method of claim 1, wherein the third step is to compare the number of digits collected, when the number of collected digits is greater than the first specific number, additional digits are collected, and the called number is notified to the ISCP, it is impossible to provide a credit call service. In the case that the credit call service is not available to the user, the first step of determining the normal service processing by receiving a request for connection of a credit call service call from an ISCP and providing the credit call service, and the number of digits collected If it is less than the number, the collected digits are compared, and when the collected digits are larger than the second specific number, the user is notified of a service announcement and the ISCP is informed that the collected digits are shorter than the second specific number. A second step of causing the command control operation to occur to the service control system through the processing; When receiving a response to a blank operation, it is determined whether a speed dial number is provided. If a speed dial number is not registered, an unregistered speed dial number announcement is sent to the user. Step 3, if the credit call service is not available, performs the service impossible processing, and if the service is available, receives the actual call number for the speed dial number from the ISCP, transmits a DTMFR release request, and performs call forward number translation; The fifth step of notifying ISCP about the result of translation of the called party number to the ISCP, constructing a call path through routing process, assigning signaling device to the called party, connecting signals and rings between stations, and hooking off of the called party (H). start the billing and make a call between subscribers, and service call according to the hook-on (H / on) of the outgoing line. A speed dial number and retry method of a credit call service comprising a sixth process of performing a charge termination and a call release. The method of claim 1, wherein the fourth step determines whether or not retrying is performed by the service user, and continuously collects digits when the retry is not performed by the user, and performs processing after collecting the called number. If a retry is required, the first step of comparing the retry counts, and if the retry count exceeds the retry number, the service is broadcast to the user. The second process of transmitting the request to the ISCP and receiving the incoming number request from the ISCP again and sending out the announcement number re-entry announcement to the user, and receiving the incoming number to re-determine whether to retry by the service user. The third process of repeating the first and second process, and if the retry by the user is not required to transmit the called number to the ISCP The fourth step of judging whether the credit call service is provided by causing the command control operation to be generated by the service control system, and if the credit call service is not possible, send an impossible announcement to the user and, if possible, the credit call service to process the credit call service. Receiving a call connection request, transmitting the DTMFR release request, translating the called number, notifying the call type about the result of the called number translation, and identifying the unavailable state through the routing process; If the status is not trunk line congestion, incoming subscriber call, or the destination number is missing, an announcement will be sent for the service unavailable; if the incoming call is not available, the retry count will be displayed. The sixth process of comparison and service is not available to the user if the number of retries exceeds a certain number A seventh process of transmitting a retry request due to an incoming state and receiving a caller number request again, and transmitting a DTMFR and an announcement broadcast connection request if the announcement is not limited to the number of retries. Shortcut number of service and retry method.