KR100455504B1 - Call Trace Method In Intelligent Network IP System - Google Patents

Abstract

In the present invention, a relay call in an intelligent network IP system capable of performing an overall tracking function of a relay call progress and events in all software blocks related to an ISDN user protocol (ISP) relay call progress in an intelligent IP (Intelligent Peripheral) system The present invention relates to a tracking method, which conventionally merely tracks a signal for an ISUP relay call, and does not provide an ISUP relay call tracking function required for actual maintenance.

Therefore, the present invention performs a tracking function for individual relay calls in all software blocks related to the progression of an ISUP relay call by using a call trace flag in an intelligent network IP system, thereby controlling the overall progress state and events from the start to the end of the relay call. The detailed tracking information can be notified in real time, so that accurate information necessary for maintenance such as connection and release procedure of real ISUP relay call, special resource occupation and release procedure, and cause of failure in case of call failure can be obtained.

In addition, the present invention, by inputting the number of ISUP relay calls to be tracked when the ISUP relay call tracking request in the intelligent network IP system with a call tracking command, it is possible to perform the tracking function for any number of relay calls This enables efficient real-time tracking of ISUP relay calls even during peak or peak times.

Description

Call Trace Method in Intelligent Network IP System

The present invention relates to relay call tracking in an intelligent network (IP) system. In particular, an overall tracking function of relay call progress and events in all software blocks related to ISDN user protocol (ISP) relay call progress in an IP system is provided. The present invention relates to a relay call tracking method in an intelligent IP system.

Recently, the function of the switching system on the network is distributed to a plurality of network elements, that is, the control part, the switching part, and the resource part, for the purpose of quickly creating a communication service and controlling service efficiently. In this intelligent network, necessary information or control commands are exchanged between elements of a network using a predetermined matching function.

As an example, as shown in FIG. 1, an SSP (Service Switch Point), which is an intelligent network switch that provides an exchange function required for an intelligent network call connection, and a service control command generated after receiving an acknowledgment of the intelligent network service from the SSP. In the case of an intelligent network consisting of an SCP (Service Control Point) that performs the logic of the intelligent network service, and an Intelligent Peripheral (IP) that supports the intelligent network service through the interconnection between the SCP and the SSP, the intelligent network application protocol between each network element ) Exchange information or control command by mutually matching through WIN protocol, WIN (Wireless Intelligent Network protocol) protocol, and E1 / ISUP (ISDN User Protocol) protocol.

At this time, IP system uses ITU-T's Q.12xx series INAP protocol when connected to SCP and wired network, and WIN protocol and CAMEL (Customized Application for Mobile network Enhanced Logic application) according to synchronous / asynchronous method when connected via wireless network. protocol) Receive and process control command of SCP by matching through protocol, and exchange with control message and voice for call connection by matching through E1 / ISUP protocol as a protocol for bearer control and service control with SSP. Take care of this.

Briefly describing the intelligent network service in the above-described intelligent network, first, the intelligent network call from the local exchange (LE) is determined by the SSP and reported to the SCP, and the SSP connects the IP system to the call path under the control of the SCP and informs the SCP of this. SCP then provides the corresponding intelligent network service by performing resource control on the IP according to the resource status.

In addition to the intelligent network, all communication networks require a call tracking function, which tracks the transition of the call state and the occupancy / release of system resources occurring in the call processing process. Provides maintenance function to know the process, occupancy / release process of various system resources, cause of failure in case of call failure.

However, in the case of the conventional intelligent network IP system, there is virtually no detailed tracking function for the ISUP relay call, and there is an ISUP signal tracking function, which is similar to the ISUP relay in the IP system by route or trunk according to the operator's command. By performing the relevant signal trace for the call, only ISUP signal is traced for all relay calls to and from the route or trunk.

Therefore, if there are many calls, such as busy hour, overload may occur due to signal tracking for all calls, whereas if there are few calls, such as peak hour, the system may have a corresponding route or trunk when the system owns a large number of relays. There was a problem that it took a long time to see the result message for signal tracking because the probability was so small.

That is, the signal tracking function for the ISUP relay call in the conventional intelligent network IP system is performed by a software block in the IP system that receives the operator's ISUP signal tracking command, which is attached to the software related to the relay call shown in FIG. The following describes the interface structure between blocks.

First, when an operator enters a signal trace command for an ISUP relay call using an Operation and Administration Maintenance (OAM) terminal, it is a software block that is a software block that analyzes and processes operator commands by an OAM processor (OAMP) 21. Call Trace Path Setup Management block) (22).

Then, the CTPM 22 analyzes the operator command and recognizes that it is a signal trace command for the ISUP relay call, and updates the ISUP signal trace related DB 23, wherein the ISUP signal trace command is sent to the signal trace DB 23. By recording, the ISC User Part Control Block (UPC) 24, which performs ISUP relay call processing and relay line state management in the IP system, performs ISUP signal tracking on the corresponding ISUP relay call. That is, the UPC 24 refers to the signal tracking DB 23 when the ISUP relay call is input, and stores the trace messages for the corresponding ISUP signal in the DB 23, and when the ISUP relay call is terminated, the DBC 23. The stored ISUP signal tracking message is forwarded to the CTPM 22.

Then, the CTPM 22 outputs the ISUP signal tracking message received from the UPC 24 to the operator through the OAMP 21, thereby notifying a signal tracking result for the ISUP relay call, which is a signal for the ISUP relay call. The tracking operation is performed for all relay calls until the ISUP signal tracking end command is input from the operator.

However, the signal tracking function for the ISUP relay call in the conventional intelligent network IP system described above is performed by the UPC block, which is a software block that handles the relay call processing. It simply tracks only the first IAM message sent, the ACM message indicating the completion of an address reception, the ANM message indicating the incoming response, the REL / RCL message indicating the completion of a call recovery / recovery, etc. There was a problem in that ISUP relay call tracking function required for actual maintenance, such as tracking only the number of calls or tracking call progress and events in the IP system, could not be provided.

The present invention has been made to solve the above problems, and its object is to provide individual relaying in all software blocks related to relay call progress using call trace flag when tracing of ISUP relay call input to intelligent network IP system is required. The purpose is to track the call.

Another object of the present invention is to perform a tracking function for an individual relay call in all software blocks related to the progress of a relay call in an intelligent network IP system, so that not only the success or failure information for the relay call but also the start to end of the relay call Detailed tracking information on progress and events is notified to the operator in real time, which enables maintenance such as the procedure of connection and disconnection of actual ISUP relay call, special resource occupation and release procedure, and cause of failure in case of call failure. To provide the exact information needed.

Another object of the present invention, by receiving the number of ISUP relay call to be tracked when the ISUP relay call tracking request in the intelligent network IP system with a call tracking command, it performs a tracking function for any specified number of relay calls only In addition, it is possible to enable efficient real-time tracking of ISUP relay call even during the busy time or the maximum time.

1 is a view schematically showing a connection structure between network elements of a general intelligent network.

2 is a diagram schematically showing an interface structure between software blocks for relay calls in a conventional intelligent network IP system.

3 is a diagram schematically showing an interface structure between software blocks for relay calls in an intelligent network IP system according to the present invention;

4 is a flowchart illustrating an operation of ISUP relay call tracking in an intelligent network IP system according to the present invention.

5 is a diagram illustrating an ISUP relay call scenario for explaining a relay call tracking operation in an intelligent network IP system according to the present invention.

6 is a diagram illustrating a tracking message output to the operator side in the intelligent network IP system.

Explanation of symbols on the main parts of the drawings

31: OAMP 32: CTPM

33: DB 34: UPC

35: SRFC 36: SRIC

37: VPM / VRM

A feature of the present invention for achieving the above object is the process of checking whether a relay call is input after receiving an ISUP relay call tracking command from an intelligent network IP system and recording it in a call tracking command DB; Transmitting a relay call event message by setting a call trace flag on an interface with a software block interworking with software blocks related to relay call progress in the IP system when a relay call is input; The present invention provides a relay call tracking method in an intelligent IP system including a process of outputting, in real time, a tracking message for a relay call event message to an operator in each software block related to relay call progress.

In addition, in the above-described relay call tracking method in the intelligent IP system, when the relay call is input, the relay call tracking method for the relay call currently input with reference to the call tracking command DB in the UPC block starting the relay call processing in the IP system is performed. The method may further include outputting a tracking message in real time to an operator through a CTPM block and an OAMP block.

At this time, the process of outputting the tracking message for the relay call event message to the operator in real time, tracking the relay call event message currently processed after delivering the relay event message with the call trace flag set to the software block associated with the relay call progress. Outputting a message in real time to an operator through an OAMP; And outputting a tracking message for the corresponding relay call event message in the software block receiving the relay call event message with the call tracking flag set to the operator through OAMP in real time.

In addition, the tracking message output to the operator in real time is a tracking message including information on the progress state and the event of the relay call, the location information of the software block which performed the relay call processing, the relay call identification information, and the relay call. And at least one of information indicating progress direction information and relay call event message name.

Furthermore, in the above-described relay call tracking method in the intelligent IP system, when the ISUP relay call tracking number to be tracked together with the ISUP relay call tracking command is input, each time a new relay call is input, the ISUP relay call tracking number is' It decreases by 1 'and automatically terminates the corresponding relay call tracking without the operator's tracking termination command.

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

In the intelligent network IP system according to the present invention, the ISUP relay call tracking function not only tracks ISUP signals but also provides a relay call tracking function associated with all software blocks related to relay call progress in the IP system. The ISUP relay call tracking function sets up a call trace flag on the interface with a software block where software blocks related to a relay call progress in an IP system in charge of processing an ISUP relay call. By passing the message, all the software blocks related to the relay call progress are output to the operator through OAMP when processing the call event message related to the call progress, and this enables the overall tracking function related to the relay call progress in the IP system. Will be provided.

The ISUP relay call tracking operation in the intelligent network IP system will be described with reference to the interface structure between the software blocks related to the relay call illustrated in FIG. 3 and the operation flowchart shown in FIG. 4.

First, when an operator inputs an ISUP relay call tracking command for a specific route using an Operation and Administration Maintenance (OAM) terminal (step S41), it analyzes and processes an operator command by an OAM processor (OAMP) 31. The software block is transferred to the Call Trace Path Setup Management Block (CTPM) 32, which inputs the number of ISUP relay calls to be traced (that is, the number of ISUP relay call traces) together with the ISUP relay call trace command.

CTPM 32 then analyzes the operator command to recognize that it is an ISUP relay call tracking command for a particular route, and records the corresponding ISUP relay call tracking command in call tracking command DB 33 (step S42). ISDN User Part Control (UPC) 34 performing ISUP relay call processing and relay line state management in the system may perform corresponding ISUP relay call tracking.

That is, the UPC 34, which is a software block that starts relay call processing located in the IP system, checks whether an ISUP relay call is input through a specific route (step S43), and if an ISUP relay call is input, the call tracking command DB ( 33), the trace message for the currently entered ISUP relay call is transmitted to the CTPM 32, and the number of ISUP relay call traces set in the call trace command DB 33 by the operator is decreased by '1'. .

At this time, the CTPM 32 receiving the tracking message for the ISUP relay call from the UPC 34 outputs the tracking message to the operator in real time through the OAMP 31 (step S44).

In addition, the UPC 34 analyzes the currently input ISUP relay call and delivers a relay call event message to a software block (eg, SRFC block or SRIC block) related to relay call progress, but sets a call tracking flag. The relay call event message is delivered (step S45), and the tracking message for the currently processed relay call event message is output to the operator in real time through the CTPM 32 and the OAMP 31 (step S46).

On the other hand, the software block in the IP system receiving the relay call event message with the call tracking flag set outputs the tracking message for the corresponding relay call event message in real time to the operator through the OAMP 31, and also the relay call. When interworking with other software blocks (e.g., VPM / VRM blocks) is necessary for progress, the call tracking flag described above is set in the relay call event message and transferred to another software block (step S47), so that the UPC 34 Rather, all software blocks related to relay call progress output the tracking message for the relay call event message to the operator through OAMP 31 until the relay call processing in the IP system is completed. Overall tracking of relay call progress can be performed.

In addition, the relay call tracking function in the above-described intelligent network IP system reduces the number of ISUP relay call traces set in the call tracking command DB 33 each time a UPC 34 inputs a new ISUP relay call. According to the number of ISUP relay call traces specified by the operator after the number of ISUP relay call traces set in the call trace command DB 33 is reduced to '0' even if the operator does not separately command the end of the relay call trace. After performing the trace function, the corresponding call is automatically terminated. The automatic termination of the relay call tracking function is described as an example in which the operator designates the number of ISUP relay call tracking. In another embodiment of the present invention, the ISUP relay call tracking may be terminated by receiving an operator command as in the prior art.

As a result, the operator can track the progress of the relay call input into the IP system, that is, the success or failure information of the relay call that can be obtained through the conventional relay call tracking, that is, the progress of the relay call in the IP system. It is possible to be notified in real time of the tracking message for each relay call event message from all related software blocks. Therefore, it is possible to obtain detailed information about which event in which software block the relay call inputted to the IP system performed, which procedure was successfully processed, and in which procedure during the relay call processing.

For example, the relay call tracking operation in the case of having the ISUP relay call scenario as shown in FIG. 5 is as follows.

First, a brief description of the ISUP relay call scenario, UPC block 34, which is a software block for starting ISUP relay call processing in the IP system, is an upper block for special resource distribution and management with respect to the input relay call progress. Interworking with SRIC block 36 which performs interworking function and special resource delivery function of call processing message, and the corresponding SRIC block 36 provides functions related to transmission control and speech recognition on voice. It is linked with VPM / VRM (Voice Play Module / Voice Recognition Module) block 37, which is a special resource to be performed, and UPC block 34 is used to link relay calls to use special resources, which are intelligent network resources, with SCP. The relay call processing is performed while interworking with the SRFC block 35 in the Advanced Intelligent Network Processor (AIP) processor which performs the INAP message processing.

Here, the UPC block 34, the SRFC block 35, the SRIC block 36, and the VPM / VRM block 37 are all software blocks in the IP system, and relay call event messages in which call tracking flags are set from higher software blocks. Or when the call trace flag is set in the relay call event message and delivered to the lower software block (that is, the point of time indicated by 'O' at the beginning or end of the arrow indicating the message flow in FIG. 5). By performing the call processing function and simultaneously outputting the tracking message for the currently processed relay call event message to the operator through OAMP 31, the linked call tracking in all the software blocks in which the relay call proceeds is possible. It can track which relay call event was performed in the software block.

At this time, the tracking message output to the operator side is as illustrated in (b) of FIG. 6, which is different from the tracking message for the conventional ISUP signal illustrated in (a) of FIG. 6. And a tracking message including information on the event, the position information of the software block which performed the relay call processing, the relay call identification information, the relay call progress direction information, the relay call event message name, and the like.

In addition, the embodiments according to the present invention are not limited to the above-described embodiments, and various alternatives, modifications, and changes can be made within the scope apparent to those skilled in the art.

As described above, according to the present invention, when a trace for an ISUP relay call input to an intelligent network IP system is required, a relay function is performed by performing a tracking function for individual relay calls in all software blocks related to the progress of the relay call using a call trace flag. In addition to success or failure information for the call, detailed tracking information on the overall progress and events from start to end of the relay call can be notified in real time.

In addition, the present invention is informed of the detailed progress information of the overall progress status and events for the ISUP relay call, the connection and release procedure of the actual ISUP relay call in the IP system, special resource occupancy and release procedure, failure in case of call failure Accurate information necessary for maintenance such as cause can be obtained.

In addition, the present invention, by inputting the number of ISUP relay calls to be tracked when the ISUP relay call tracking request in the intelligent network IP system with a call tracking command, it is possible to perform the tracking function for any number of relay calls This enables efficient real-time tracking of ISUP relay calls even during peak or peak times.

Claims (5)

Checking whether the relay call is input after receiving the ISUP relay call tracking command from the intelligent network IP system and recording it in the call tracking command DB; Transmitting a relay call event message by setting a call trace flag on an interface with a software block interworking with software blocks related to relay call progress in the IP system when a relay call is input; Relay call tracking method in the intelligent IP network system comprising the step of outputting the tracking message for the relay call event message to the operator in each software block associated with the relay call progress. The method of claim 1, When the relay call is input, in the UPC block starting the relay call processing in the IP system, a tracking message for the currently entered relay call is output in real time to the operator through the CTPM block and the OAMP block with reference to the call tracking command DB. Relay call tracking method in the intelligent network IP system, characterized in that further comprising the process. The method of claim 1, The process of outputting the tracking message for the relay call event message to the operator in real time may include sending a tracking message for the relay call event message currently processed after delivering the relay event message with the call tracking flag set to a software block related to the relay call progress. Outputting to the operator in real time through the OAMP; Relaying in the intelligent network IP system comprising the step of outputting the tracking message for the corresponding relay call event message in the software block receiving the relay call event message with the call tracking flag set to the operator through the OAMP in real time Call tracking method. The method according to any one of claims 1 to 3, The tracking message output to the operator in real time is a tracking message including information on the progress state and the event of the relay call, the position information of the software block which performed the relay call processing, the relay call identification information, and the relay call progress direction. Relay call tracking method in an intelligent IP network system, characterized in that it comprises one or more of information and information indicating the relay call event message name. The method of claim 1, When the number of ISUP relay call traces to be traced together with the ISUP relay call trace command is input, each time a new relay call is input, the number of ISUP relay call traces is decreased by '1' so that the corresponding relay call is not required without the operator's termination of tracking. Relay call tracking method in the intelligent network IP system, characterized in that the automatic termination of the tracking.