KR100603598B1 - The device of automatically DSP module cognition or/and fault recovery and its method - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a DSP module automatic recognition or / and fault handling apparatus and method thereof.

2. The technical problem to be solved by the invention

An object of the present invention is to provide a DSP module automatic recognition apparatus and a method for automatically recognizing a DSP module newly installed in a VoIP gateway by sensing a bias voltage of a DSP module.

In addition, the present invention is to detect the failure of the DSP module mounted in the VoIP gateway to the level according to the degree to detect the failure by applying a different failure processing algorithm for each failure level to minimize the damage caused by the failure Another object is to provide a DSP module failure processing apparatus and method thereof.

In addition, the present invention automatically recognizes the DSP module newly installed in the VoIP gateway by sensing the bias voltage of the DSP module, and detects the failure level of the DSP module mounted in the VoIP gateway by dividing it into levels according to the degree. Another object of the present invention is to provide a DSP module automatic recognition and error processing apparatus and method for processing a failure so as to minimize damage caused by a failure by applying different failure processing algorithms.

3. Summary of Solution to Invention

According to an aspect of the present invention, there is provided an automatic DSP module recognition and failure processing apparatus, comprising: module recognizing means for recognizing a bias voltage of a DSP module to recognize a mounting of the DSP module, and thus outputting a module recognition signal and DSP module mounting information; Module installation information storage means for storing mounting information of the DSP module output by the module recognition means; Module failure detection means for detecting a failure level and a failure level of a specific DSP module, determining the authenticity of the failure occurring in the DSP module, and adjusting the DSP module failure level; According to the module recognition signal from the module recognition means and the module failure occurrence signal from the module failure detection means, the module recognition interrupt signal and the module failure interrupt signal are notified to inform the implementation of the new DSP module and the failure of a specific DSP module in the form of an interrupt. Interrupt control means for generating; After recognizing the mounting of a new DSP module according to the module recognition interrupt signal from the interrupt control means, generating an information request signal to the module installation information storage means to obtain information of the mounted DSP module, and then obtaining the acquired DSP module. It delivers the implementation information of the to the matching means, and generates a failure processing request signal to recognize the failure of the specific DSP module according to the module failure interrupt signal from the interrupt control means to request the failure processing of the specific DSP module having the failure. Interrupt service routine (ISR) functional means for; Fault handling means for handling a fault occurring in said particular DSP module in accordance with a fault handling request signal from said interrupt service routine (ISR) functional means; The matching means for obtaining the information of the DSP module mounted from the interrupt service routine (ISR) functional means and the fault report of the DSP module and transferring it to an external operational preservation system; And switching means for electrically connecting the newly mounted DSP module.

4. Important uses of the invention

The present invention is used for automatic recognition of DSP module or error processing device.

VoIP gateways, DSP modules, module auto-recognition, load balancing, fault handling, power down, fault level

Description

The device of automatically DSP module cognition or / and fault recovery and its method             

1 is a configuration diagram of a conventional Voice over Internet Protocol (VoIP) gateway,

2 is a network diagram including a VoIP gateway to which the present invention is applied;

3 is a block diagram of an embodiment of an automatic DSP module automatic recognition and / or failure processing apparatus according to the present invention,

4 is a flowchart illustrating a method for automatically detecting a DSP module in an apparatus for automatically detecting a DSP module according to the present invention;

5 is a flowchart illustrating a method for processing a DSP module failure in a DSP module failure processing apparatus according to the present invention;

6 is a detailed configuration diagram of an embodiment of a module failure detection unit according to the present invention;

7A, 7B and 7C are detailed flowcharts illustrating an embodiment of a method for detecting a DSP module failure in a module failure detecting unit according to the present invention;

8 is a detailed configuration diagram of an embodiment of a module power control unit according to the present invention.

* Explanation of symbols for the main parts of the drawings

310: module recognition unit 320: module installation information storage unit

330: module failure detection unit 340: interrupt control unit

350: Interrupt service routine (ISR) function

360: failure processing unit 370: IP (Internet Protocol) network matching unit

380: TDM switch

According to the present invention, the DSP module mounted on the VoIP gateway is automatically recognized by detecting the bias voltage of the DSP module, and the failure of the DSP module mounted on the VoIP gateway is classified and classified according to the level. The present invention relates to a DSP module automatic recognition and / or failure processing apparatus and method for handling a failure so as to minimize damage due to failure by applying different failure processing algorithms according to levels.

1 is a configuration diagram of a conventional Voice over Internet Protocol (VoIP) gateway.

As shown in FIG. 1, the conventional VoIP gateway is responsible for controlling the entire system and provides a control unit 100 for processing various VoIP protocols, provides a real time clock, and provides an IP (Internet Protocol) or a MAC (Media Access Control). ) Real time clock (RTC: Real Time Clock) providing unit 110 having the data to be stored in the system, such as the address 110, the control unit 100 stores the code for initializing, and after the initial initialization has a Boot ROM 120 for copying code to SDRAM 130, SDRAM 130, which is a main work space for the controller 100 to process data, and processing in Boot ROM 120 Compression / processing data input from subscribers, flash memory 140 for downloading and storing protocol drivers used for VoIP and protocols other than external ones It includes: digital signal processing (digital signal processing) function unit 160, a LAN (LAN) 150, a subscriber interface unit 170 for an analog subscriber to execute media access control for DSP group.

The controller 100 includes a LAN controller portion for external LAN connection, and the real-time clock (RTC) providing unit 110 includes a nonvolatile random access memory (NVRAM).

In the conventional VoIP gateway as described above, a DSP function for digitizing voice signals to perform compression and decoding functions is fixed in terms of capacity, which causes problems in scalability and flexibility of the VoIP gateway.

In addition, when a DSP function of the VoIP gateway fails, subscribers connected to use the DSP function by restarting the failure cannot receive VoIP service continuously.

Thus, this method of handling failures was also a major factor in increasing call failure rate and blocking rate.

The present invention has been proposed to solve the above problems, and an object thereof is to provide a DSP module automatic recognition apparatus and a method for automatically recognizing a DSP module newly installed in a VoIP gateway by sensing a bias voltage of a DSP module.

In addition, the present invention is to detect the failure of the DSP module mounted in the VoIP gateway to the level according to the degree to detect the failure by applying a different failure processing algorithm for each failure level to minimize the damage caused by the failure Another object is to provide a DSP module failure processing apparatus and method thereof.

In addition, the present invention automatically recognizes the DSP module newly installed in the VoIP gateway by sensing the bias voltage of the DSP module, and detects the failure level of the DSP module mounted in the VoIP gateway by dividing it into levels according to the degree. Another object of the present invention is to provide a DSP module automatic recognition and fault handling apparatus and method for handling a fault so as to minimize damage due to a fault by applying different fault handling algorithms.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

The apparatus of the present invention for achieving the above object, in the DSP module automatic recognition device, the module recognition for sensing the bias voltage of the DSP module to recognize the mounting of the DSP module to output the module recognition signal and DSP module mounting information Way; Module installation information storage means for storing mounting information of the DSP module output by the module recognition means; Interrupt control means for generating a module recognition interrupt signal for informing the mounting of a new DSP module in the form of an interrupt according to the module recognition signal from the module recognition means; After recognizing the mounting of a new DSP module according to the module recognition interrupt signal from the interrupt control means, generating an information request signal to the module installation information storage means to obtain information of the mounted DSP module, and then obtaining the acquired DSP module. Interrupt service routine (ISR) functional means for conveying implementation information of the apparatus to the matching means; The matching means for acquiring information on the newly implemented DSP module from the interrupt service routine (ISR) functional means and transferring it to an external operational preservation system; And switching means for electrically connecting the newly mounted DSP module.

In addition, the method of the present invention provides a method for automatically recognizing a DSP module, comprising the steps of: a module recognizing means recognizing a mounting of a new DSP module by a bias voltage of a DSP module and generating a module recognition signal accordingly; Storing, by the module installation information storage means, mounting information of the newly mounted DSP module; Generating, by an interrupt control means, a module recognition interrupt signal to recognize an implementation of a new DSP module and to inform it in the form of an interrupt according to the module recognition signal; Acquiring an information request signal by an interrupt service routine (ISR) function means according to the module recognition interrupt signal to obtain mounting information of a newly mounted DSP module stored in the module installation information storage means; And delivering, by the interrupt service routine (ISR) functional means, the mounting information of the newly mounted DSP module to the matching means.

On the other hand, the apparatus of the present invention for achieving the above another object, in the DSP module failure processing apparatus, detects the failure or failure level of a specific DSP module and determines the authenticity of the failure occurred in the specific DSP module Module failure detection means for adjusting a failure level of a particular DSP module; Interrupt control means for generating a module fault interrupt signal to inform a fault report of a particular DSP module in the form of an interrupt according to a module fault occurrence signal from said module fault detection means; An interrupt service routine (ISR) function means for recognizing a failure of a particular DSP module and transmitting the failure to a matching means according to a module failure interrupt signal from the interrupt control means, and generating a failure processing request signal to the failure processing means; The fault handling means for handling a fault with a fault handling algorithm corresponding to a fault level occurring in a specific DSP module in accordance with a fault handling request signal from the interrupt service (ISR) routine function means; And said matching means for obtaining a fault report of said DSP module from said interrupt service routine (ISR) functional means and delivering it to an external operational preservation system.

In addition, the method of the present invention is a DSP module failure processing method, comprising: a module failure generation step of generating a module failure occurrence signal as the module failure detection means detects a failure of a specific DSP module; Generating, by an interrupt control means, a module failure interrupt signal to notify a failure of a specific DSP module in the form of an interrupt according to the module failure occurrence signal; Generating, by an interrupt service routine (ISR) functional means, a failure processing request signal in accordance with the module fault interrupt signal; And processing a fault in a fault handling means according to the fault handling request signal.

On the other hand, the apparatus of the present invention for achieving the above another object, in the DSP module automatic recognition and failure processing apparatus, by detecting the bias voltage of the DSP module to recognize the mounting of the DSP module, accordingly the module recognition signal and DSP Module recognition means for outputting module mounting information; Module installation information storage means for storing mounting information of the DSP module output by the module recognition means; Module failure detection means for detecting a failure level and a failure level of a specific DSP module, determining the authenticity of the failure in the DSP module, and adjusting the DSP module failure level; According to the module recognition signal from the module recognition means and the module failure occurrence signal from the module failure detection means, the module recognition interrupt signal and the module failure interrupt signal are notified to inform the implementation of the new DSP module and the failure of a specific DSP module in the form of an interrupt. Interrupt control means for generating; After recognizing the mounting of a new DSP module according to the module recognition interrupt signal from the interrupt control means, generating an information request signal to the module installation information storage means to obtain information of the mounted DSP module, and then obtaining the acquired DSP module. It delivers the implementation information of the to the matching means, and recognizes the failure of the specific DSP module according to the module failure interrupt signal from the interrupt control means to generate a failure processing request signal to request the failure processing of the specific DSP module having the failure Interrupt service routine (ISR) functional means for causing a message to be received; Fault handling means for handling a fault occurring in said particular DSP module in accordance with a fault handling request signal from said interrupt service routine (ISR) functional means; The matching means for obtaining the information of the DSP module mounted from the interrupt service routine (ISR) functional means and the fault report of the DSP module and transferring it to an external operational preservation system; And switching means for electrically connecting the newly mounted DSP module.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram illustrating a network including a VoIP gateway to which the present invention is applied.

As shown in FIG. 2, a network including a VoIP gateway to which the present invention is applied includes a VoIP gateway 220 matching an Internet Protocol (IP) network, a Public Switched Telephone Network (PSTN) network, and an IP network and a PSTN network. ).

It also includes an Operations Administration and Maintenance (OAM) 210 for remote management of the VoIP gateway 220.

The operation preservation system 210 is a system that receives mounting information and a failure report of a digital signal processing (DSP) module from the VoIP gateway 220 and takes appropriate measures.

In addition, the VoIP gateway 220 digitizes a voice signal and modularizes and mounts a DSP function that performs compression and decoding functions, thereby allowing flexibility in the scalability of the VoIP gateway.

Here, VoIP refers to IP telephony technology for a series of facilities that use IP to convey voice information, which is not a traditional protocol based on circuits such as PSTN, a public switched telephone network, but voices in digital form within discrete packets. It means sending information. The main advantage of VoIP and Internet telephony technology is that it integrates telephone service by utilizing existing IP network, allowing telephone users to receive long-distance and international phone service in internet and intranet environment with only local call charge.

To use VoIP, companies must install VoIP equipment, such as Cisco's AS5300 Access Server, at the gateway, which receives voice packets in packets from users in the company and forwards them to other parts of the intranet. Or transmit to the PSTN using the T1 or T1 or E1 interface.

3 is a block diagram of an embodiment of an automatic DSP module automatic recognition or failure processing apparatus according to the present invention.

The DSP module automatic recognition or failure processing apparatus according to the present invention is mounted in the VoIP gateway 220 shown in FIG. Thus, the DSP module mounted in the VoIP gateway 220 is automatically detected so that the system can be configured without changing hardware and software by the application program. In addition, when a failure occurs in a particular DSP module, the failure is divided into three levels according to the degree, and different failure processing algorithms are applied according to the classified level so as to handle the failure.

As shown in FIG. 3, the DSP module automatic recognition or failure processing apparatus according to the present invention senses the mounting voltage of the DSP module by detecting the bias voltage of the DSP module, and accordingly detects the module recognition signal and the DSP module mounting information. Module recognition unit 310 for outputting, module installation information storage unit 320 for storing the mounting information of the DSP module output from the module recognition unit 310, detecting the occurrence and failure level of a specific DSP module failure A module failure detection unit 330, a module recognition signal from the module recognition unit 310, and the module failure detection unit 330 for determining the authenticity of the failure occurring in the DSP module and adjusting the DSP module failure level. Module-aware interrupt signal and module fault interrupter to notify the implementation of a new DSP module and the failure of a specific DSP module in the form of an interrupt in response to a module fault signal The interrupt control unit 340 for generating a signal signal, and recognizes the mounting of the new DSP module according to the module recognition interrupt signal from the interrupt control unit 340 to generate an information request signal to the module installation information storage unit 320 After acquiring the information of the mounted DSP module, the mounting information of the acquired DSP module is transmitted to the IP network matching unit 370, and the specific DSP module is generated according to the module failure interrupt signal from the interrupt control unit 340. The interrupt service routine (ISR) function unit 350 and the interrupt service (ISR) routine function unit 250 for generating a fault processing request signal for requesting fault processing of the specific DSP module in which the fault has occurred. A failure processing unit 360 and the interrupt service routine (ISR) function unit 35 for processing a failure occurring in the DSP module in response to a failure processing request signal from TDM for electrically connecting the IP network matching unit 370 and the newly mounted DSP module to obtain the information of the DSP module and the fault report of the DSP module and transmit the information to the operation preservation system 210. a time-division multiplexing switch unit 380.

The DSP module automatic recognition method in the DSP module automatic recognition apparatus of the VoIP gateway 220 having the above components will be described later in more detail with reference to FIG. 4.

On the other hand, if a failure occurs in the DSP module operated by the VoIP gateway 220, subscribers connected to the DSP module cannot receive the VoIP service. In order to solve this problem, the present invention enables subscribers to receive VoIP service continuously by substituting the operation of a particular DSP module in which the failure occurs by a load sharing method in another DSP module.

The failure of the DSP module is detected by the module failure detection unit 330. If a failure occurs in a particular DSP module, the module failure detection unit 330 generates a module failure occurrence signal to the interrupt controller 340 to notify the specific DSP module in which the failure occurs. Thereafter, the interrupt controller 340 generates a module fault interrupt signal to the interrupt service routine (ISR) function unit 350 to indicate that a failure occurs in a specific DSP module and to receive an interrupt service routine (ISR) function that receives the module fault interrupt signal. The unit 350 notifies the operation preservation system 210 through the IP network matching unit 370, and the operation preservation system records this. At the same time, the interrupt service routine (ISR) function unit 350 generates a failure processing request signal and causes the failure processing unit 360 to receive the failure processing signal to handle a failure of a specific DSP module in which the failure occurs.

A DSP module failure processing method in the DSP module failure processing apparatus will be described later in more detail with reference to FIG. 5.

4 is a flowchart illustrating a method for automatically detecting a DSP module in an apparatus for automatically detecting a DSP module according to the present invention.

First, when the DSP module is additionally mounted in the VoIP gateway 220, the voltage of a specific signal pin assigned to the mounted DSP module is changed to "L". This is always monitored by the module recognition unit 310, and as described above, when recognizing the DSP module whose voltage of a specific signal pin is changed to "L" (410), the module installation information storage unit 320 is the module recognition unit. Information about the newly mounted DSP module provided by 310 is stored (420).

The module recognizing unit 310 detects that the bias voltage of the newly mounted module is changed to “L” through an edge trigger method, and thus recognizes that the DSP module is newly mounted.

In addition, when recognizing that the DSP module is newly mounted as described above, in order to notify the operating system and the operation preservation system 210 in the form of an interrupt, a module recognition signal is generated to the interrupt controller 340 (430).

Subsequently, the interrupt control unit 340 that receives the module recognition signal generated by the module recognition unit 310 generates the module recognition interrupt signal to the interrupt service routine (ISR) function unit 350 that exists in software in the operating system. Know the implementation of the new DSP module (440).

Thereafter, the interrupt service routine (ISR) function unit 350 receiving the module recognition interrupt signal from the interrupt control unit 340 goes to the module installation information storage unit 320 to obtain the location of the mounted DSP module and related device information. The information request signal is generated to obtain information related to the mounted DSP modules stored in the module installation information storage unit 320 (operation 450).

Subsequently, the interrupt service routine (ISR) function unit 350 stores the module mounting information obtained from the module installation information storage unit 320 through the IP network matching unit 370 (460) in an operation preservation system ( 210).

The operation preservation system 210 having received this information stores the information of the mounted modules so as to exclude false failures due to noise and other causes of the signal when processing the module failure in the future.

For example, a failure received from an unmounted module is considered to be a false failure and is not handled.

As described above, the VoIP gateway 220 automatically recognizes a newly implemented DSP module to configure a system without changing hardware and software by an application program.

5 is a flowchart illustrating a method for processing a DSP module failure in the DSP module failure processing apparatus according to the present invention.

First, the module failure detection unit 330 detects a failure of a specific DSP module and generates a module failure occurrence signal (510). In this case, the module failure generation signal is divided into a minor module failure generation signal, a major module failure generation signal, and a critical module failure generation signal according to the level of the failure occurring in the specific DSP module. As described above, a process of detecting a level of a failure occurring in a specific DSP module by the module failure detecting unit 330 and generating a different module failure occurrence signal will be described in detail with reference to FIG. 7.

As the module failure detecting unit 330 generates a module failure occurrence signal, the interrupt controller 340 notifies the interrupt service routine (ISR) function unit 350 in the form of an interrupt that a failure occurs in the specific DSP module. Generate a module fault interrupt signal (520).

Meanwhile, when an interrupt occurs, the interrupt service routine (ISR) function unit 350, which provides an appropriate service to solve the interrupt, receives a module fault interrupt signal generated from the interrupt controller 340. In operation 530, a failure processing request signal for requesting failure processing generated in the specific DSP module is generated.

As described above, when the failure processing unit 360 receives a module failure interrupt signal from the interrupt service routine (ISR) function unit 350, the failure processing unit 360 corresponds to a failure processing algorithm corresponding to the level of the failure occurring in the specific DSP module. In step 540, the failure occurred in the specific DSP module.

As described above, the module failure detecting unit 330 detects a failure occurring in a specific DSP module in three levels (minor failure, major failure, critical failure) according to the degree, and accordingly different module failure Generate a generation signal. As described above, the module failure detection unit 330 distinguishes and detects failures into three levels, and accordingly generates different module failure occurrence signals, the failure processing unit 360 applies different failure processing algorithms according to each level. Handle the fault

On the other hand, even if the failure processing unit 360 has not handled the failure of the lower level more than a predetermined number of times of failure processing, if the processing does not promote the lower level to the higher level to apply the higher level failure processing algorithm.

The three failure levels detected by the module failure detection unit 330 will be described below.

The first level of failure is minor failure. Minor failure is a failure when an application program for the VoIP gateway 220 fails and the program does not operate normally.

As described above, when a minor failure occurs, the failure processing unit 360 processes the failure by restarting only the application program in which the failure occurs or by a failure processing algorithm.

However, if the failure processing unit 360 has attempted to deal with related failures several times in the same manner as above, but the failure is not handled, the minor disorder is promoted to a major disabled major disorder.

The second level of failure is a major failure. A major failure is a failure associated with a case where an unhandled minor failure is promoted as described above or when a critical function of the VoIP gateway 220 cannot be performed.

For example, each DSP module downloads its own real-time operating system and device driver program from the host processor and executes it. In this case, the operating system and the related device driver can operate normally in real time due to a momentary malfunction of the memory and the DSP module. Major failures occur when it is impossible. If a major failure occurs for the above reason, the failure processing unit 360 must restart only the corresponding DSP module to process the failure.

However, if the failure processing unit 360 attempts to handle a related failure several times in the same manner as above, but the failure is not handled, the major failure is promoted to a higher level critical failure.

The third level of failure is a critical disorder. Critical failure is a failure that occurs when the system is no longer operated due to repeated failures but it is not possible to handle major failures as described above.

For example, if a failure occurs in the code of the operating system of the host processor, the failure cannot be handled, or if it is repeated several times to deal with the DSP module failure, the failure is reported as a critical failure. In the case of a critical disorder, the measures to be taken may vary.

In general, when a critical failure occurs, it is processed in a form of shielding the DSP module in which the critical failure occurs, rather than processing it.

For example, power off the DSP module and replace it with another DSP module to handle the fault. In addition, subscribers assigned to the corresponding DSP module are distributed to other adjacent DSP modules according to the load balancing method so that they can be continuously serviced.

Each component of the module failure detection unit 330 for detecting a failure divided into three levels as described above and informing the failure processing unit 360 to process the same will be described with reference to FIG. 6.

6 is a detailed block diagram of an embodiment of a module failure detection unit according to the present invention.

As shown in FIG. 6, the module failure detecting unit 330 for detecting a DSP module failure according to the present invention includes a minor failure collecting unit 610, a minor failure counting unit 620, A major fault collector 630, a major fault counter 640, a critical fault collector 650, and a module power controller 660.

The minor fault collector 610, the major fault collector 630, and the critical fault collector 650 are divided into N buses corresponding to the number of each DSP module (the failure of each DSP module). Receive a fault report for each DSP module). Upon receiving the fault report as described above, each fault collection unit 610, 630, and 650 checks whether the DSP module received that the fault has occurred is actually mounted through the bias voltage of each DSP module. This is because a false fault report may be conveyed that a fault has occurred in a DSP module not mounted by signal noise.

As a result of the check, if a failure occurs in the mounted DSP module, each fault collection unit 610, 630, and 650 generates a module failure occurrence signal corresponding to each level to inform which DSP module a failure has occurred and at the same time, each failure coefficient. Module failure detection signals are also generated in units 620, 640, and 810 (see FIG. 8) to increase the failure count value.

On the other hand, the failure processing unit 360 is generated in each of the failure counting unit (620, 640, 810), that is, in accordance with the above-described method for processing this according to the module failure occurrence signal generated by the module failure detection unit 330 Attempt to handle the failure by applying a failure handling algorithm corresponding to each failure level.

On the other hand, even if the failure processing unit 360, the failure processing unit to apply the failure processing algorithm to handle the failure as described above, if the failure is not handled, each failure collection unit (610, 630, 650) is the failure processing again You will be reported that a fault has occurred in an unspecified DSP module. As described above, when each fault collecting unit 610, 630, 650 is reported that a fault has occurred in the DSP module, the fault collecting unit 360 generates a module fault generating signal corresponding to the fault level. Attempt to handle the failure by applying the corresponding failure handling algorithm.

At the same time, each fault collector 610, 630, and 650 generates a module fault detection signal to each fault counter 620, 640, and 810 that a fault occurs in a specific DSP module, thereby increasing the fault count.

If the fault count value counted by each fault counting unit 620, 640, 810 exceeds the preset fault count limit value, the current fault is promoted to a higher level fault. Apply level error handling algorithm. Thereafter, the lower failure counting unit initializes the failure count value.

This process is described with reference to FIGS. 7A, 7B and 7C as follows.

First, it is assumed that DSP modules are currently mounted in slots 1, 3, and 5 in the VoIP gateway 220, and up to N DSP modules may be mounted in the VoIP gateway 220. Accordingly, the number of bus signals informing the failure collecting units 610, 630, and 650 of occurrence of a failure is N. In addition, each failure counting unit 620, 640, 810 sets the failure count value to '0' (700).

In this situation, if a failure report is sent to indicate that a specific DSP module (eg DSP module mounted in slots 1, 2, 3) has failed, it is determined whether it is minor or major disabled or critically disabled. 705).

Minor faults are collected through N bus signal lines corresponding to each DSP module to report a minor fault that indicates that a minor fault occurred in a DSP module mounted in slots 1, 2, and 3 while a specific application is executed and down. If the detection unit 610 detects, the minor failure collecting unit 610 determines the authenticity of the minor failure occurring in the DSP module by comparing with the mounting information it has (710). The mounting information is information on a currently mounted DSP module obtained by the minor fault collector 610 detecting a bias voltage generated from each DSP module.

As described above, the DSP module is currently mounted in slots 1, 3, and 5. Accordingly, the minor failure collector 610 determines that the minor failure report from the slot 2 in the received minor failure report from the slots 1, 2, and 3 is a false failure report due to signal noise, and ignores it. That is, the minor fault collector 610 does not transmit a fault report for the DSP module mounted in the slot 2 to the minor fault counter 620 and the fault processor 360.

Meanwhile, the minor fault collecting unit 610 which detects that a minor fault has occurred in the DSP modules mounted in slots 1 and 3 compared to the currently installed DSP module information is a minor fault counting unit 620 as 1, 3 A minor module failure detection signal is generated to indicate that a failure occurs in the DSP module mounted in the first slot (715).

The minor failure counting unit 620, which receives a minor module failure detection signal indicating that a minor failure has occurred in the DSP modules mounted in the slots 1 and 3, determines a failure count value of the DSP modules mounted in the slots 1 and 3, respectively. Increment by the value of (e.g. 1) (720).

On the other hand, the minor failure counting unit 620 by the minor failure report from the DSP module mounted in the slots 1 and 3, while the minor failures occurring in the DSP modules mounted in the slots 1 and 3 are processed. In order to prevent a continuous increase in the failure count value of the DSP module mounted in slot 3, a minor failure report is reported by the DSP modules mounted in slots 1 and 3 when the failure processing unit 360 attempts to perform a minor failure processing. Is blocked from being delivered to the minor fault collection unit 610.

The minor failure counting unit 620 counts a failure count value by edge triggering a failure occurrence signal transmitted through the minor failure collecting unit 610.

As described above, as the failure coefficient value increases, the minor failure coefficient unit 620 compares the current failure coefficient value with a preset limit failure coefficient value and determines whether the current failure coefficient value exceeds the preset limit failure coefficient value ( 725).

As a result of the determination 725, as the current failure count value exceeds a preset limit failure count value, the failure caused by the DSP module mounted in the slots 1 and 3 may be treated as a minor failure by the minor failure counting unit 620. It is determined that it is not a possible disability and informs the major disability collecting unit 630 that the minor disability is promoted to a major disability 730.

On the other hand, as a result of the determination 725, as the current failure coefficient value does not exceed the predetermined threshold failure coefficient value, the minor failure collector 610 to inform that the minor failure occurs in the DSP module mounted in slots 1 and 3 C) generates a minor module fault occurrence signal (735).

Subsequently, upon receiving the minor module failure occurrence signal from the minor failure collector 610, the failure processor 360 restarts a minor failure processing algorithm (for example, a down-performed application that is determined as described above). And the like, after attempting 738 for minor failure processing occurring in the DSP modules mounted in slots 1 and 3, the method determines whether the minor failure processing is successful (740).

As a result of the determination 740, as described above, the failure processing unit 360 attempts to perform minor failure processing on the DSP modules mounted in slots 1 and 3, and succeeds. Terminate the fault handling process.

On the other hand, if the determination result 740, the failure processing unit 360 attempts to process the minor failure occurred in the DSP modules mounted in slots 1 and 3, but the failure is not handled, the minor failure collecting unit again reports the blocked minor failure reporter. Proceeding to step 715, which occurs at 610, the process proceeds.

As described above, when the minor fault collector 610 receives the minor fault report from the DSP modules mounted in the slots 1 and 3 again, the minor fault fault detection signal is generated in the minor fault counting unit 620 as described above. Inform them that a minor failure has occurred.

The minor failure coefficient unit 620, which has received a minor failure, increases the failure coefficient value of the DSP module mounted in the slots 1 and 3 having the current value of 1 to 2, and then increases the failure coefficient value. The process is repeated from the process of determining whether the set limit failure coefficient value is exceeded.

On the other hand, the major failure collecting unit 630 received from the minor failure counting unit 620 received in the minor failure occurring in the DSP modules mounted in slots 1 and 3 to the major failure is the same as the minor failure collecting unit 610 It is determined whether or not the major failure of the DSP module mounted in slots 1 and 3 is serious (745), and major failure occurred in the DSP module mounted in the slots 1 and 3 according to the false failure report. The failure detection signal is generated and notified to the major failure counter 640 (750).

As described above, the major failure counting unit 640 that has received a major failure in the DSP modules mounted in the slots 1 and 3 increases the failure coefficient of the DSP modules mounted in the slots 1 and 3 by 1 ( 755).

On the other hand, the major failure counting unit by the major failure report from the DSP modules mounted in the slots 1 and 3 during the process of processing a major failure occurring in the DSP modules mounted in the slots 1 and 3, as in the minor failure process ( The DSP mounted in the slots 1 and 3 when the failure processor 360 initiates a major failure processing attempt to prevent the 640 from continuously increasing the failure count value of the DSP module mounted in the slots 1 and 3; In the module, the major failure report is blocked from being delivered to the major failure collector 630.

The major failure counting unit 640 counts a failure count value by edge triggering a major module failure detection signal transmitted through the major failure collecting unit 630 similarly to the minor failure counting unit 620.

As described above, as the failure coefficient value increases, the major failure coefficient unit 640 compares the current failure coefficient value with a preset limit failure coefficient value and determines whether the current failure coefficient value exceeds a preset limit failure coefficient value ( 760).

As a result of the determination 760, as the current failure count value exceeds a preset limit failure count value, the major failure counting unit 640 processes a failure occurring in the DSP module mounted in the slots 1 and 3 as a major failure. It is determined that it is not a possible disability and notifies the critical disability collecting unit 650 that the major disability has been promoted to a critical disability 765.

On the other hand, as a result of the determination 760, as the current failure coefficient value does not exceed the preset limit failure coefficient value, the major failure collector 630 to inform that the major failure occurs in the DSP module mounted in slots 1 and 3 ) Generates a major module failure signal (770).

Subsequently, upon receiving the major module failure occurrence signal from the major failure collector 630, the failure processor 360 may determine that a major failure processing algorithm (for example, the specific application is down) is determined as described above. The memory page part determines the hardware failure through the test program. If the hardware failure occurs, the memory page area is closed to allow the MMU (Memory Management Unit) to allocate the application to the area. After the operation is performed, the downed application program is transferred to another area to be executed.), And after major error processing (773) occurred in the DSP module mounted in the slots 1 and 3, the major error occurs. It is determined whether the process is successful (775).

As a result of the determination (775), as described above, the failure processing unit 360 attempts to handle major failures occurring in the DSP modules mounted in the slots 1 and 3, and succeeds. Terminate the fault handling process.

On the other hand, when the determination result 775, the failure processing unit 360 attempts to handle major failures occurring in the DSP modules mounted in slots 1 and 3, but the failures are not handled, the major failure report is again collected. The process proceeds to step 750 to generate the unit 630.

As described above, when the major fault collector 630 receives a major fault from the DSP modules mounted in slots 1 and 3 again, the major fault collector 630 receives the major module fault detection signal to the major fault counter 640 in the same manner as described above. To indicate a major failure.

The major failure coefficient unit 640, which has received a major failure, increases the failure coefficient value of the DSP module mounted in slots 1 and 3 having a current value of 1 to 2, and then increases the failure coefficient value. The process is repeated from the process of determining whether the set limit failure coefficient value is exceeded.

On the other hand, the critical failure collecting unit 650 received from the major failure coefficient unit 640, the major failure generated in the DSP module mounted in slots 1 and 3 is promoted to a critical failure, the same as the major failure collection unit 630 It is determined whether or not the serious failure of the DSP module mounted in the slots 1 and 3 (780), the critical failure occurred in the DSP module mounted in the slots 1 and 3 according to the non-false failure report module power control unit Informed in 660 (785).

As described above, when a critical failure occurs, most of the DSPs are mounted in slots 1 and 3 because the failure is handled by another module that restarts the system or performs a task performed by a DSP module having a critical failure by a load balancing method. The module must be powered off.

Accordingly, the module power control unit 660 cuts off power of the DSP module mounted in the slots 1 and 3 where the critical failure occurs (790).

As described above, when a critical failure occurs in a specific DSP module, the module power control unit 660 for shutting off power applied to the specific DSP module will be described in more detail with reference to FIG. 8.

If the power failure of the DSP module in which the critical failure occurs is not performed, if a failure occurs in one DSP module due to the characteristics of a concentrator (not shown) and the VoIP gateway 220 in which each DSP module is configured as a shared bus, Abnormal signals output from the DSP module can cause other adjacent DSP modules to malfunction, causing the system to crash.

Accordingly, when the module power control unit 660 receives that a critical failure occurs in a specific DSP module by a critical module failure signal from the critical failure collecting unit 650, the module power control unit 660 shuts off the power of the specific DSP module so that the specific DSP module has failed. This prevents malfunctioning of other DSP modules that normally operate by abnormal signals from the system.

On the other hand, the module failure occurrence signal generated in each fault collection unit (610, 630, 650) is not directly transmitted to the failure processing unit 360, as described above, the interrupt control unit 340, interrupt service routine (ISR) function unit It is transmitted to the failure processing unit 360 through 350.

In addition, the interrupt service routine (ISR) function unit 350 informs the operation preservation system 210 that a specific DSP module has failed through the IP network matching unit 370, and the operation preservation system 210 can detect any DSP. Make a note of whether the module has failed.

If a failure occurred in a specific DSP module is a critical failure, the operator is notified by email or broadcasting according to the failure alert system.

8 is a detailed configuration diagram of an embodiment of a module power control unit according to the present invention.

As shown in FIG. 8, the module power control unit 660 according to the present invention increases a failure coefficient value based on a critical module failure occurrence signal of a specific DSP module and a bias voltage of each module. Critical failure counting unit (referred to as "810-1 to 810-n or less" 810 ") for generating a power-off signal when the set threshold failure coefficient value is exceeded, and a power-off signal from the critical failure counting unit 810 A control unit 820-1 to 820-n or less to control the power of the DSP module having a critical failure to be cut off by the controller, and to control the power to the mounted DSP module when the new DSP module is mounted. "").

The critical failure counting unit 810 detects a critical module failure occurrence signal and a bias voltage from a specific DSP module a predetermined number of times, and then generates a power off signal. This is because a false fault report can be transmitted from a normally operating DSP module that a critical fault is caused by signal noise. Therefore, if the critical failure counter 810 receives a critical module failure occurrence signal from a specific DSP module once, the critical failure counting unit 810 receives a predetermined number of times instead of immediately generating a power cutoff signal, that is, if the critical failure report is continuously received. This determines that it is not a critical failure report accidentally transmitted by signal noise and generates a power off signal.

As a result, the problem of disconnecting the power supply of the DSP module performing normal operation can be minimized.

In addition, the module power controller 660 applies power to the mounted DSP module when the DSP module is mounted.

This can be achieved by receiving a live completion signal generated by a switch (not shown) that has been used to prevent adjacent DSP modules from malfunctioning by an inrush current generated when the DSP module is mounted. The power is applied by using Live Insertion.

In this case, the live insertion function is a function of detaching / mounting a module during the operation of the VoIP gateway 220.

In addition, when the newly mounted DSP module receives power and initializes its main functions and is ready to operate, the module power control unit 660 supplies power to a bus driver for matching the DSP module with other devices. Will be applied.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, the present invention has an effect of automatically recognizing a DSP module newly mounted in a VoIP gateway by modularizing a DSP function and sensing a bias voltage of the DSP module.

In addition, the present invention has the effect of automatically recognizing the newly implemented DSP module to expand the capacity of the gateway without changing the software and hardware.

In addition, the present invention is effective to deal with the failure to minimize the damage caused by applying the algorithm according to each failure level by detecting the failure of the DSP module mounted in the VoIP gateway to the level according to the degree. have.

In addition, the present invention distributes the load associated with the DSP module that has failed by the load balancing method to adjacent DSP modules to enable continuous service, thereby reducing the call failure rate and the blocking rate.

Claims (17)

In the DSP module automatic recognition and fault handling device, Module recognition means for sensing a bias voltage of a DSP module to recognize the mounting of the DSP module, and accordingly outputting a module recognition signal and DSP module mounting information; Module installation information storage means for storing mounting information of the DSP module output by the module recognition means; Module failure detection means for detecting a failure level and a failure level of a specific DSP module, determining the authenticity of the failure occurring in the DSP module, and adjusting the DSP module failure level; According to the module recognition signal from the module recognition means and the module failure occurrence signal from the module failure detection means, the module recognition interrupt signal and the module failure interrupt signal are notified to inform the implementation of the new DSP module and the failure of a specific DSP module in the form of an interrupt. Interrupt control means for generating; After recognizing the mounting of a new DSP module according to the module recognition interrupt signal from the interrupt control means, generating an information request signal to the module installation information storage means to obtain information of the mounted DSP module, and then obtaining the acquired DSP module. It delivers the implementation information of the to the matching means, and generates a failure processing request signal to recognize the failure of the specific DSP module according to the module failure interrupt signal from the interrupt control means to request the failure processing of the specific DSP module having the failure. Interrupt service routine (ISR) functional means for; Fault handling means for handling a fault occurring in said particular DSP module in accordance with a fault handling request signal from said interrupt service routine (ISR) functional means; The matching means for obtaining the information of the DSP module mounted from the interrupt service routine (ISR) functional means and the fault report of the DSP module and transferring it to an external operational preservation system; And Switching means for electrically connecting newly mounted DSP modules DSP module automatic recognition and fault handling device comprising a. The method of claim 1, The module failure detection means, Detects a minor fault occurring in a specific DSP module and determines the authenticity of a minor fault occurring in the specific DSP module based on a bias voltage generated from the specific DSP module. A minor fault collector for generating a minor module fault detection signal and a minor module fault occurrence signal to indicate that a fault has occurred; According to the minor module failure detection signal from the minor fault collecting unit, a failure coefficient value is increased by a predetermined value, and the minor failure is promoted to a major failure as the failure coefficient value exceeds a preset limit failure coefficient value. (Minor) failure counting unit; Detects a major failure occurring in a specific DSP module or a major failure promoted from the minor failure counting unit, and judges the authenticity of a major failure occurring in the specific DSP module based on a bias voltage generated from the specific DSP module. A major fault collecting unit for generating a major module fault detection signal and a major module fault occurrence signal to indicate that a major fault has occurred in the specific DSP module; In order to increase the failure count value by a predetermined value according to the major module failure detection signal from the major failure collector, and to inform that the major failure is promoted to a critical failure as the failure count value exceeds a predetermined limit failure count value. (Major) failure counting unit; Detects a critical fault occurring in a specific DSP module or a critical fault promoted from the major fault counting unit, and judges the authenticity of a critical fault occurring in the specific DSP module based on a bias voltage generated from the specific DSP module. A critical failure collecting unit for generating a critical module failure occurrence signal to indicate that a critical failure has occurred in the specific DSP module; And A module power control unit for shutting off the power supply of the DSP module in which the critical failure occurs in response to a critical module failure occurrence signal from the critical failure collecting unit; DSP module automatic recognition and failure processing device comprising a. The method according to claim 1 or 2, The process of processing the failure by the failure processing means, In order to prevent the failure count value of the minor failure counting unit and the major failure counting unit from increasing due to the failure reporting in a specific DSP module, automatic detection and failure of the DSP module characterized in that the occurrence of failure reporting from each DSP module is blocked. Processing unit. The method of claim 3, wherein The module power control unit, A failure coefficient value is increased based on a critical module failure occurrence signal of a specific DSP module and a bias voltage of each module, and a critical failure coefficient for generating a power off signal as the failure coefficient value exceeds a predetermined limit failure coefficient value. part; And A control unit for controlling the power supply of the DSP module having the critical failure to be cut off by the power cutoff signal from the critical failure coefficient unit, and controlling the power to be supplied to the newly mounted DSP module when the new DSP module is mounted. DSP module automatic recognition and failure processing device comprising a. The method of claim 4, wherein The module power control unit, And the critical failure counting unit and the control unit exist in a one-to-one correspondence with the DSP module mounted in the VoIP gateway. In the DSP module automatic recognition device, Module recognition means for sensing a bias voltage of a DSP module to recognize the mounting of the DSP module and outputting a module recognition signal and DSP module mounting information; Module installation information storage means for storing mounting information of the DSP module output by the module recognition means; Interrupt control means for generating a module recognition interrupt signal for informing the mounting of a new DSP module in the form of an interrupt according to the module recognition signal from the module recognition means; After recognizing the mounting of a new DSP module according to the module recognition interrupt signal from the interrupt control means, generating an information request signal to the module installation information storage means to obtain information of the mounted DSP module, and then obtaining the acquired DSP module. Interrupt service routine (ISR) functional means for conveying implementation information of the apparatus to the matching means; The matching means for acquiring information on the newly implemented DSP module from the interrupt service routine (ISR) functional means and transferring it to an external operational preservation system; And Switching means for electrically connecting newly mounted DSP modules DSP module automatic recognition device comprising a. In the DSP module failure processing apparatus, Module failure detection means for detecting a failure level and a failure level of a specific DSP module, determining the authenticity of the failure occurring in the specific DSP module, and adjusting the failure level of the specific DSP module; Interrupt control means for generating a module fault interrupt signal to inform a fault report of a particular DSP module in the form of an interrupt according to a module fault occurrence signal from said module fault detection means; An interrupt service routine (ISR) function means for recognizing a failure of a particular DSP module and transmitting the failure to a matching means according to a module failure interrupt signal from the interrupt control means, and generating a failure processing request signal to the failure processing means; The fault handling means for handling a fault with a fault handling algorithm corresponding to a fault level occurring in a particular DSP module in accordance with a fault handling request signal from the interrupt service (ISR) routine functioning means; And The matching means for acquiring a failure report of the DSP module from the interrupt service routine (ISR) functional means and transferring it to an external operational preservation system; DSP module failure processing apparatus comprising a. The method of claim 7, wherein The module failure detection means, Detects a minor fault occurring in a specific DSP module and determines the authenticity of a minor fault occurring in the specific DSP module based on a bias voltage generated from the specific DSP module. A minor fault collector for generating a minor module fault detection signal and a minor module fault occurrence signal to indicate that a fault has occurred; According to the minor module failure detection signal from the minor fault collecting unit, a failure coefficient value is increased by a predetermined value, and the minor failure is promoted to a major failure as the failure coefficient value exceeds a preset limit failure coefficient value. (Minor) failure counting unit; Detects a major failure occurring in a specific DSP module or a major failure promoted from the minor failure counting unit, and judges the authenticity of a major failure occurring in the specific DSP module based on a bias voltage generated from the specific DSP module. A major fault collecting unit for generating a major module fault detection signal and a major module fault occurrence signal to indicate that a major fault has occurred in the specific DSP module; In order to increase the failure count value by a predetermined value according to the major module failure detection signal from the major failure collector, and to inform that the major failure is promoted to a critical failure as the failure count value exceeds a predetermined limit failure count value. (Major) failure counting unit; Detects a critical fault occurring in a specific DSP module or a critical fault promoted from the major fault counting unit, and judges the authenticity of a critical fault occurring in the specific DSP module based on a bias voltage generated from the specific DSP module. A critical failure collecting unit for generating a critical module failure occurrence signal to indicate that a critical failure has occurred in the specific DSP module; And A module power control unit for shutting off the power supply of the DSP module in which the critical failure occurs in response to a critical module failure occurrence signal from the critical failure collecting unit; DSP module failure processing apparatus comprising a. The method according to claim 7 or 8, The process of processing the failure by the failure processing means, DSP module failure processing apparatus characterized in that to prevent the failure report from each DSP module to prevent the failure count value of the minor failure counting unit, the major failure counting unit due to the failure reporting in a particular DSP module. The method of claim 9, The module power control unit, A failure coefficient value is increased based on a critical module failure occurrence signal of a specific DSP module and a bias voltage of each module, and a critical failure coefficient for generating a power off signal as the failure coefficient value exceeds a predetermined limit failure coefficient value. part; And A control unit for controlling the power supply of the DSP module having the critical failure to be cut off by the power cutoff signal from the critical failure coefficient unit, and controlling the power to be supplied to the newly mounted DSP module when the new DSP module is mounted. DSP module failure processing apparatus comprising a. The method of claim 10, The module power control unit, And the critical failure counting unit and the control unit exist in one-to-one correspondence with the DSP module mounted in the VoIP gateway. In the DSP module automatic recognition method, The module recognizing means recognizes the mounting of the new DSP module by the bias voltage of the DSP module and generates a module identification signal accordingly; Storing, by the module installation information storage means, mounting information of the newly mounted DSP module; Generating, by an interrupt control means, a module recognition interrupt signal to recognize an implementation of a new DSP module and to inform it in the form of an interrupt according to the module recognition signal; Acquiring an information request signal by an interrupt service routine (ISR) function means according to the module recognition interrupt signal to obtain mounting information of a newly mounted DSP module stored in the module installation information storage means; And Transmitting, by the interrupt service routine (ISR) functional means, the matching information of the newly mounted DSP module to the matching means. DSP module automatic recognition method comprising a. In the DSP module failure processing method, A module failure generation step of generating a module failure occurrence signal as the module failure detection means detects a failure of a specific DSP module; Generating, by an interrupt control means, a module failure interrupt signal to notify a failure of a specific DSP module in the form of an interrupt according to the module failure occurrence signal; Generating, by an interrupt service routine (ISR) functional means, a failure processing request signal in accordance with the module fault interrupt signal; And Processing a failure in a failure processing means according to the failure processing request signal; DSP module failure processing method comprising a. The method of claim 13, The module failure generation step, A level determining step of determining a level of a failure occurring in a specific DSP means; As a result of the level determination, the minor failure coefficient value is increased by a predetermined value as the generated failure is a minor failure, and whether the increased failure coefficient is a major failure promotion of the generated minor failure according to whether the threshold failure coefficient value is exceeded. Determining minor failure processing steps; As a result of the level determination, the major failure count value is increased by a predetermined value as the failure occurs as a major failure, and whether the increased failure count value is a critical failure promotion of the major failure caused by the exceeding of the threshold failure coefficient value. Determining a major failure processing step; As a result of the level determination, a critical module failure occurrence signal is generated when the failure occurs as a critical failure, the critical failure coefficient value is increased according to the generated critical module failure occurrence signal, and according to the critical module failure occurrence signal and the critical failure coefficient value. A critical failure processing step of generating a power off signal to the specific DSP module in which the critical failure occurs and powering off a specific DSP module in which the critical failure occurs according to the power off signal. DSP module failure processing method comprising a. The method of claim 14, The minor failure processing step, Generating a minor module failure occurrence signal as the increased failure factor value does not exceed a limit failure factor value; And Promoting the generated minor failure to a major failure as the increased failure coefficient value exceeds a threshold failure coefficient value, and proceeding to a major failure processing step DSP module failure processing method comprising a. The method of claim 15, The major failure processing step, Generating a major module failure occurrence signal as the increased failure coefficient value does not exceed a threshold failure coefficient value; And Promoting the generated major failure to a critical failure as the increased failure coefficient value exceeds a threshold failure coefficient value, and proceeding to a critical failure processing step DSP module failure processing method comprising a. The method of claim 16, The critical failure processing step, Increasing a failure coefficient value based on a critical module failure occurrence signal of a specific DSP module and a bias voltage of the specific DSP module; And Generating a power off signal when the failure count value exceeds a predetermined limit failure count value; DSP module failure processing method comprising a.

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