KR960013978B1 - Isdn switching system - Google Patents

Abstract

A device using the method has a ISDN Subscriber access processor(ISAP)(112) having an access switching subsystem for ISDN(ASS_I)(100)/ a ISDN D-channel control processor board assembly(IDPA)(111)/ a digital subscriber interface(DSI) block, an access sitching processor(ASP_I)(113) having a digital subscriber packet mode control(DPC), a time switch processor(TSP)(114), an access switching subsystem for packet switching(ASS_P)(102), a packet handling module(PHM)(122), a packet layer control processor(PLCP) (123), a time switch processor(TSP)(124), a interconnection network subsystem(INS)(103), a interconnection network processor(INP)(131), and a number translation processor(NTP)(132).

Description

Outgoing-access closed user group processing method of packet information function

1 is a hardware configuration diagram of the present invention,

2 is an overall processing flow chart for a closed user group processing method according to the present invention;

3 is a detailed flowchart of FIG.

* Explanation of symbols for the main parts of the drawings

100: ASS-I (Access Switching Subsystem for ISDN)

111: IDPT (ISDN D-channel control Processor board Assembly)

112: ISDN Subscriber Access Processor

113: ASP-I (Access Switching Subsystem for ISDN)

114: TSP (Time switch Processor)

102: ASS-P (Access Switching Subsystem for Packet Switching)

122: PHM (Packet Handing Module)

123: Packet Layer Control Processor (PLCP)

121: ASP-P (Access switching Processor for Packet)

124: Time Switch Processor (TSP)

103: INS (Interconnection Network Subsystem)

131: INP (Interconnection Network Processor)

132: Number Translation Processor (NPT)

104: database

The present invention relates to a method for processing outgoing accessible closed user groups of an electronic switch ISDN packet random user function.

Since it could not be implemented in the conventional electronic switchboard, a service for additionally providing the subscriber to the electronic switchboard ISDN packet subscriber was required for the flexibility of the service that can be sent to subscribers and subscribers belonging to the closed user group.

The present invention devised to meet the above requirements has the effect of a private network as a function of allowing subscribers belonging to the outgoing accessible closed user group to allow communication between groups with the same purpose and to general subscribers, and thus the development of communication network technology. In line with the trend, the purpose of the present invention is to provide a method for processing an outgoing closed user group of a packet information service of a general information network for providing various services to an ISDN packet subscriber.

In order to achieve the above object, the present invention provides an ISDN Subscriber Access Processor (ISAP), a DPC having an Access Switching Subsystem for ISDN (ASS_I), an ISDN D-channel control Processor board Assembly (IDPA), and a Digital Subscriber Interface (DSI) block. Access Switching Processor for ISDN (ASP_I) with Integrated Digital Subscriber Packet mode Control (BIS) block, Time switch Processor (TSP) with Time Swich Link (TSL), Packet Inward-call Control (PIC), and Packet call Direction PLCP with built-in Access Switching Subsystem for Packet Switching (ASS_P) with Integrated Block (Block), Packet Handing Module (PHM) with B-channel X.25 Protocol Handler (B25H), and B-channel Packet Call Control (BPCC) (Packet Loyer Control Processor), Access Switching Processor for Packet (ASP_P), Time Switch Processor (TSP) with Time Swich Link (TSL), Interconnection Network Subsystem (INS), INP (Switch Network Control) with SNC NT with Interconnection Network Processor (NTR) and Number TRanslation A method for processing outgoing-access closed user groups of a packet random user function applied to hardware having a P (Number Translation Processor) and a database, the method comprising: investigating outgoing subscriber status and information according to the originating physical routing completion notification; Stage 1; Disassembling and reassembling a call establishment request packet; A third step of requesting number translation and destination physical path establishment; A fourth step of receiving an incoming logical channel assignment result and notifying a call setup request packet verification result; A fifth step of releasing the outgoing call and completing the outgoing process; A sixth step of investigating subscriber status and information according to the destination physical path establishment completion notification; A seventh step of completing the incoming logic process; An eighth step of disassembling and reassembling an incoming call packet; And a ninth step of releasing the incoming call to complete the incoming call processing. It is made, including.

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

1 is a hardware configuration diagram to which the present invention is applied. In the drawing, reference numeral 101 denotes a subsystem ASS_I (Access Switching Subsystem for ISDN) in charge of digital subscriber registration exchange, and 111 denotes a processor board IDPA (ISDN D) that controls an ISDN D-channel. channel processor board assembly (112), 112 is an ISDN Subscriber Control Access Processor (ISAP) that is responsible for digital subscriber matching, 113 is an Access Switching Processor for ISDN (ASP_I) that is responsible for digital subscriber access exchange, and 114 is a time switch processor TSP. (Time switch Processor) 102 is an Access Switching Subsystem for Packet Switching (ASS_P) that is responsible for packet matching exchange, 122 is a Packet Handing Module (PHM) that is responsible for packet processing, and 123 is a Processor PLCP that controls the packet layer (Packet Layer Control Processor), 121 is an access switching processor for packet (ASP_P), 124 is a time switch Value processor TSP (Time Switch Processor), 103 is an internal network subsystem INS (Interconnection Network Processor), 132 is a number translation processor (NTP), and 104 is a database (hereinafter referred to as DB). Indicates.

In addition to the hardware configuration described above, a software block (Block) required for virtual line service B-channel packet local call processing, and in ASP_I 113, a block digital subscriber packet mode control (DPC) for digital subscriber packet mode control. In the ISAP 112, a digital subscriber interface (DSI) for digital subscriber matching, a time switch link TSL (Time SWich Link) for the TSP 114, and a packet call control / verification and number translation request for the ASP_p 121, etc. Packet INward_call Control (PIC) and Packet Call Direction Control (PDC) blocks exist that perform the functions of PIC, and PHM 122 has a block B25H (B-channel) responsible for the execution of the link layer and the packet layer of the X.25 protocol. X.25 Protocol Handler), PLCP 123 is responsible for B-channel packet call control (BPCC) and TSP 124 is Time Swich Link (TSL) and INP (131). ) SNC (Switc) h Network Control (NTP), NTP 132 is mounted on each software block of the block NTR (Number TRanslation) responsible for number translation.

2 is an overall processing flow diagram for a method for processing outgoing-access closed user group of a packet random user function according to the present invention.

When the subscriber requests a call setup, it notifies the ASP_P 121 PIC through the DSI of the ISAP 112 and the DPC of the ASP_I 113 via the IDPA 111.

The PIC sets up the calling physical path and notifies the BPCC of the PIC 123 so that the BPCC determines whether the calling party state and the subscriber information are generated based on the completion of the calling physical path establishment completion. (201)

If call origination is possible, PHM 122 requests call setup request packet verification to originating BPCC (hereinafter referred to as BPCCo) when PHM 122 receives a call setup request packet from originating terminal to originating B25H (hereinafter referred to as B25Ho). BPCCo transmits the result of reassembly after disassembly and verification of the call setup packet to B25Ho (202).

In addition, BPCCo requests number translation and destination-side physical path setup request to PDC and PIC of ASP_P 121 (203). Accordingly, PIC requests destination B-channel setup to DPC to set up destination B-channel. After the B-channel is set up, the PIC sets up the called-party physical path and informs the BPCC of the setup result. As a result, the BPCC examines the subscriber status and information to determine whether the call is generated (204 to 06).

In this case, when the incoming call can be generated, an incoming logical channel is allocated (207) and the result is notified to the BPCCo to notify the outgoing party that the call is poor. The called party disassembles and reassembles the received incoming packet and sends the verification result to B25Ht. And transmit to the destination terminal (208).

When a call reception packet is received from the called terminal to the BPCCt, the packet is transmitted, and the result of disassembly, verification and reassembly is transmitted (209).

Accordingly, B25Ht transmits the result to B25Ho based on the received call reception packet.When a request for verifying a connection request packet is received by BPCCo, the B25Ht disassembles, verifies, and reassembles the reception packet, and sends the result to B25Ho to call the calling terminal. Allow notification of connection results. This leads to a packet call connection state.

3 is a detailed flowchart of FIG. 2.

Only the contents of the BPCC are described since the BPCC delivers outgoing accessible user group processing. When the subscriber receives notification of the completion of the establishment of the physical path of the calling party from the PIC upon request of the closed user group function (301), the BPCC accesses the database, reads information on the calling party (302), and determines whether the calling processor can be generated. Prepare for origination process generation (BPCCo) (303).

At this time, when the verification request for the setup packet is received from B25Ho (304), the call setup request packet is decomposed (305) to verify whether the closed user group information is included in the call setup request packet (306).

If the verification result includes the closed user group information in the packet, it is verified whether the closed user group function is registered in the exchange by referring to the value of accessing the database (307). In case of registered subscriber (308), it checks whether the closed user group information included in the packet and the closed user group information registered by the subscriber are the same information (309). In the same case, after preparing to deliver to the called party on the basis of the information contained in the packet, the called party number translation request (310).

If the verification result is not included, the service provider's database is referenced to verify that the user is registered with the closed user group function (311). If the verification result is not registered, the general call is not a closed user group. In the state where it is registered, after preparing to transmit the number registered in the exchange to the called party (312), the calling party number translation request (310).

When the recipient number translation result is notified (313), the receiver prepares for the physical path establishment request and prepares to transmit the closed user group type and the closed user group number of the calling party to the called party (314). (315).

Upon receiving notification of the completion of the allocation of the logical channel, the BPCCo 316 reassembles the call setup request packet including the closed user group information (317) and notifies B25Ho of the verification result of the call setup request packet (318).

In addition, BPCCo notifies the call connection packet verification result from B25Ho (319), decomposes the call connection packet, verifies the packet (320), and notifies the call connection packet verification result to B25Ho to notify that the call is connected to the calling terminal (321). ). This establishes the call connection state by the closed user group function requested by the subscriber, and then transitions to the release processing step (322).

Upon receiving notification of the completion of the establishment of the physical path of the called party (401), the subscriber subscriber database is accessed to read the information on the called party (402), and according to the presence or absence of closed user group information of the calling party, registration of the closed user group function of the called party is performed. (403,404) If it is registered, verify that the calling party requests the same number as the registered user group registered by the called party, and if another number is requested, release the call and call the same user group number. If a call is requested, it transitions to 405 and 406 to allocate an incoming logical channel.

If the incoming pressure is not registered in the closed user group function, since it is a general subscriber, an incoming logical channel for call setup is allocated regardless of the closed user group function registration (406), and the BPCCo is notified of the result of the incoming logical channel assignment ( 408). In addition, BPCCt enters the waiting packet verification state of waiting for the destination layer 2 configuration (4-9).

In addition, the BPCCt decomposes the incoming call packet according to the incoming call packet verification request received from the B25Ht (410) to verify whether the closed user group information is included (411), and the closed user group information is not included in the incoming packet. If not, the incoming call packet is verified and transitioned to the incoming call packet reassembly state (413). However, if the closed user group information and the closed subscriber group information registered by the called subscriber in the exchange are the same (414), the incoming call packet is released, and if the call is different, the incoming call packet includes the closed user group information. It reassembles (415) and notifies the verification result of the incoming call packet to B25Ht (416).

After the incoming call packet is transmitted, B25Ht receives a call connection packet as a response from the called terminal and requests verification to the BPCCt (417). Accordingly, the BPCCt decomposes the call connection packet and performs verification thereof (418). The BPCCt notifies 425 of the result thereof to the B25Ht, and the incoming process enters the data transfer state and transitions to the release processing step (420).

If the subscriber makes a call release request to terminate the call after all data has been delivered (501), the BPPC stops the process (the originating or incoming call that received the call teardown) (502) and releases the occupying Layer 2 resource. A link release request is sent to the B25H to release (503) and after receiving the result (504), it requests a physical path release to the PIC (505). Upon receiving the physical path release completion notification (506), all information related to the link is initialized and terminated (507).

Accordingly, the present invention as described above is an additional grant function for the ISDN packet subscriber of the electronic switchboard, and the subscriber belonging to the outgoing accessible closed user group allows communication between groups having the same purpose and transmission to the general subscriber. It is flexible and can provide various services to ISDN packet subscribers in the future according to the development trend of communication network technology.

Claims (10)

Access Switching Subsystem for ISDN (ASS_I) 101, ISDN D-channel control Processor board Assembly (IDPA) 111, ISDN Subscriber Access Processor (ISAP) 112 with DSI (Digital Subscriber Interface) block, DPC ( Access Switching Processor for ISDN (ASP_I) 113 with Digital Subscriber Packet mode Control (BIS) block, Time switch Processor (TSP) 114 with Time Swich Link (TSL), Packet Inward-call Control (PIC), and ASS_P (Access Swithing Subsystem for Packet Switching) 102 with Packet Call Direction Control (PDC) block, Packet Handing Module (PHM) 122 with B-channel X.25 Protocol Handler (B25H), BPCC ( Packet Loyer Control Processor (PLCP) with built-in B-channel Packet Call Control (123), Access Switching Processor for Packet (ASP_P) 121, and Time Switch Processor (TSP) with Time Swich Link (TSL) (124) ), Interconnection Network Subsystem (INS) (103), Interconnection Network Processor (INP) with built-in Switch Network Control (SNC) 131, and Number TRanslation (NTR) A method for processing outgoing-access closed user groups of a packet random user function applied to hardware having a number translation processor (NTP) 132 and a database 104, comprising: outgoing subscriber status according to notification of completion of a physical path establishment from the calling party And a first step of examining the information; Disassembling and reassembling a call establishment request packet; A third step of requesting number translation and destination physical path establishment; A fourth step of receiving an incoming logical channel assignment result and notifying a call setup request packet verification result; A fifth step of releasing the outgoing call and completing the originating process; A sixth step of investigating subscriber status and information according to the destination physical path establishment completion notification; Allocating an incoming logical channel; An eighth step of disassembling and reassembling an incoming call packet; And a ninth step of releasing the incoming call to complete the incoming call processing. Outgoing-access closed user group processing method of the aggregate information network packet random user function, characterized in that comprises a. The method of claim 1, wherein the first step comprises: when the subscriber receives a notification from the PIC of the calling party's physical path establishment completion request from the PIC, the BPCC accesses a database to read information about the calling party; (301,302); A second step 303 of preparing for an origination process generation (BPCCo); A method for processing a closed user group in which an aggregate information communication network packet arbitrary user can access and transmit a function. The method as claimed in claim 1, wherein the second step further comprises: when the verification request for the call setup packet is received, disassemble the packet in the call setup request to verify whether the closed user group information is included in the call setup request packet ( 304 to 306); If the closed user group information is included in the packet after performing the first steps 304 to 306, verify that the registered subscriber is registered in the exchange. A second process (307 to 309) for processing with a number contained therein or dismantling; After performing the first steps 304 to 306, if the closed user group information is not included in the packet, verify that the subscriber is registered in the exchange, and if not registered, register as a general call state. A third process (311, 312) preparing to deliver the number to the called party; A fourth process 311 for performing a call forward translation request after performing the second and third processes; Method for processing outgoing-access closed user group of the aggregate information communication network packet random user function, characterized in that comprises a. 2. The method of claim 1, wherein the third step comprises: a first process (313, 314) for receiving a called number translation response and preparing for a called-side physical path establishment request; A second step (315 to 317) of performing a first step (313, 314), requesting a called party physical path establishment, notifying a result of an incoming logical channel assignment, and reassembling a call establishment packet; Method for processing outgoing-access closed user group of the aggregate information communication network packet random user function, characterized in that comprises a. 2. The method of claim 1, wherein the fourth step comprises: a first step (318 to 320) of notifying the B25Ho of the verification result of the call establishment request packet and requesting the call connection packet verification to verify the call connection packet; A second step (321, 322) of informing the call connection packet verification result to the B25Ho after performing the first step (318 to 320), indicating that the call is connected to the calling terminal, and transitioning to the release processing step after the call connection state is established; Method for processing outgoing-access closed user group of the aggregate information communication network packet random user function, characterized in that comprises a. 2. The method of claim 1, wherein the fifth step comprises: a first step (501 to 503) in which the BPCC stops the process and requests the release of the link when the subscriber releases the call to terminate the call after all the data transfer is completed; A second step (504 to 507) of receiving a link release result and requesting a physical path release after receiving the first step (501 to 503), and initializing and terminating the link information after receiving the physical path release result; Method for processing outgoing-access closed user group of the aggregate information communication network packet random user function, characterized in that it comprises a. The method as claimed in claim 1, wherein the sixth step comprises: a first step (401 to 404) of accessing the called subscriber database to check whether the called subscriber closed user group is registered when receiving the notification of the completion of the called party physical path setting; After performing the first process (401 to 404), if not registered, the general subscriber process to allocate the destination logical channel, and the registered subscriber is verified whether the calling party requests the same number as the closed user group registered by the called party. A second step (405, 406) of releasing the call when requesting a different number and allocating an incoming logical channel when requesting the same number; A third step (407 to 409) of notifying an incoming logical channel allocation result to BPCCo and waiting for BPCCt incoming packet packet verification after performing the second step (405, 406); Method for processing outgoing-access closed user group of the aggregate information communication network packet random user function, characterized in that comprises a. 2. The method of claim 1, wherein the BPCCt comprises: a first step (410 to 412) of verifying whether the closed user group information is included by decomposing the incoming call packet according to the incoming call packet verification request received from the B25Ht; After performing the first process (410 to 412), it searches for whether the closed user group information is the same in the incoming call packet, and if it is different, releases the call and in the same case, reassembles the incoming call packet including the closed user group information. A second step (414 to 416) of notifying the verification result of the incoming call packet to the B25Ht; After performing the first steps 410 to 412, if the closed user group information is not included in the incoming call packet, the incoming call packet is verified and the incoming call packet is reassembled to notify the verification result of the incoming call packet to the B25Ht. Third process (413, 415, 416); Method for processing outgoing-access closed user group of the aggregate information communication network packet random user function, characterized in that comprises a. The method of claim 8, wherein after receiving the incoming packet, the B25Ht receives a call receipt packet as a response from the called terminal, requests verification to the BPCCt, and decomposes the call reception packet to the BPCCt. Performing first processes 417 and 418; A second process (419, 420) in which the incoming process enters a data transfer state and transitions to a release processing step after the first process (417, 418) is performed, and a notification is made to B25Ht; Method for processing outgoing-access closed user group of the aggregate information communication network packet random user function, characterized in that comprises a. The method of claim 1, wherein the ninth step comprises: a first step (501 to 503) of stopping a BPCC process and requesting a release of a link when a subscriber releases a request for termination after all data transfer is completed; A second step (504 to 507) of receiving a link release result and requesting a physical path release after receiving the first step (501 to 503), and initializing and terminating the link information after receiving the physical path release result; Method for processing outgoing-access closed user group of the aggregate information communication network packet random user function, characterized in that comprises a.