KR100300087B1 - Method and apparatus for checking input/output port in a mobile communication central office - Google Patents

Abstract

The input / output port checking apparatus and method of the mobile communication switch according to the present invention connect a loopback-enabled RS-232C cable to the I / O port so as to check whether the I / O port is not normally connected to the operator terminal. By allowing the operator to check for bad I / O ports before connecting the actual operator terminals, the operator can quickly check for bad I / O ports on demand, contributing to system quality improvement, and using all I / O ports. I / O-related problems can be found and solved in a faster time in the system (for example, PC, printer, CRT, etc.) to reduce development and debugging time.

Description

Device for checking input / output port of mobile communication switch and its method {Method and apparatus for checking input / output port in a mobile communication central office}

The present invention relates to an input / output (I / O) port checking apparatus and a method thereof of a mobile communication switch, and more particularly, to an operator terminal used by an operator in an initial installation or operating system of the mobile communication switch. The present invention relates to an I / O port checking apparatus of a mobile communication switch and a method thereof for checking which of the I / O ports connected to the controller is normal and bad.

In general, a mobile communication switch performs a function of connecting a mobile subscriber to another mobile subscriber or a general subscriber.

1 is a block diagram illustrating a connection state between a general mobile communication switch and an operator terminal, wherein a plurality of I / O ports and exchangers connected to the operator terminal 30 and the operator terminal 30 are in operation. An I / O port backboard 31 equipped with an I / O port for inputting / outputting signals, and firmware for processing input / output of signals are mounted, and an input / output message to an actual device is processed. Input / Output Control Processor Assembly (hereinafter referred to as IOPA) 32 and Main Control Duplication Board Assembly (hereinafter referred to as MCDA) that performs all the control related to I / O as main board. It consists of 33. Here, the MCDA 33 monitors the states of I / O ports, data links, local disks, etc. at the request of the operator and an operation system 33a for driving the MCDA 33, and an operator's request. And manage the state by type such as blocking / unblocking the faulty device according to the monitoring test result, and also block according to the state type of the man machine device. Management and test unit (man machine device supervision and test (hereinafter referred to as MMDST)) that reports unblock information to FLM (Fault Management) (not shown) and performs alarm, fault handling, and state transition processing (33b) It consists of.

A method of checking whether there is an I / O port abnormality of the I / O port backboard 31 connected to the mobile communication switch and the operator terminal 30 according to the related art having such a configuration will be briefly described.

First, the MMDST 33b checks and manages whether only 16 I / O ports installed on the I / O port back board 31 are used in connection with the operator terminal 30.

At the initial initialization, the firmware of IOPA 32 checks whether the port is connected, and informs the OS 33a of the information as an interrupt, and the OS 33a notifies the MMDST 33b so that a few times the port is presently operated by the terminal. It is connected to 30) and manages each port how many times it is not used because it is not connected.

Therefore, in the related art, when an actual operator terminal 30 is connected and used, when an input / output message is not outputted to the operator terminal, it may be determined that there is a problem in the corresponding I / O port.

In addition, there was a problem in which it is not known exactly where the problem occurred on the path through which the input / output message is transmitted.

Accordingly, an object of the present invention is to solve the above problems, and an object of the present invention is to connect an operator terminal used by an operator in an initial installation of a mobile communication switch or a system in operation, or not connected to an operator terminal. The present invention provides a method for checking an I / O port of a mobile communication switch that enables a user to quickly check whether any one of the ports is normal or bad according to an operator's request.

A feature of the I / O port checking device of a mobile communication switch according to the present invention for achieving the above object is a system having a plurality of I / O ports including a Tx pin and an Rx pin, wherein the plurality of I / O ports Input / output means for inputting a command for detecting whether a port is defective and outputting a detection result value for whether the I / O port is defective; Loop back number that is connected to the I / O port and loops back a character having an arbitrary size input to the Tx pin of the I / O port through the Rx pin of the I / O port according to the command inputted from the input / output means. Sweets; a) generates a character having an arbitrary size according to the command input by the command input means and transmits it to the Tx pin of the I / O port, and b) loops to the Rx pin of the I / O port by the loop back means. Receives a character of any size back, c) Compare the received character and the character first sent to the Tx pin of the I / O port, and if the same characters are the same character, the corresponding I / O port is determined to be normal, In case that they are not identical to each other or characters are not received, I / O port checking means for determining the corresponding I / O port is abnormal and transmitting the determination result value to the input / output means.

In addition, a feature of the I / O port checking method of a mobile communication system according to the present invention is a method of checking a plurality of I / O ports including a Tx pin and an Rx pin. Inputting an instruction to detect; Transmitting a character having an arbitrary size to a Tx pin of the I / O port according to the input command; Looping back a character having an arbitrary size input to the Tx pin of the I / O port to the Rx pin of the I / O port; Receiving a character having an arbitrary size looped back to the Rx pin of the I / O port, and comparing the received character with a character initially transmitted to the Tx pin of the I / O port; As a result of the comparison, if the received character and the transmitted character are the same characters, the corresponding I / O port is determined to be normal. If the characters are not identical to each other or if the character is not received for a predetermined time, the corresponding I / O port is abnormal. Judging and outputting the judgment result value.

In addition, an I / O port checking apparatus and method of the mobile communication system according to the present invention are characterized in that the loopback uses an RS-232C cable having a common Tx pin and an Rx pin.

1 is a block diagram showing a connection state between a general mobile communication switch and an operator terminal;

2 is a block diagram showing an input / output port checking apparatus of a mobile communication switch according to the present invention;

FIG. 3 is a view illustrating only one input / output port mounted in the input / output port backboard of FIG. 2 in detail;

4 is a flowchart illustrating an operation of an input / output port checking method of a mobile communication switch according to the present invention.

<Explanation of symbols for main parts of drawing>

30: Operator Terminal 31: I / O Port Backboard

32: I / O control processor 33: main control redundancy board

33a: drive system 33b: management and test unit

Hereinafter, an I / O port checking apparatus and a method thereof of a mobile communication switch according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a diagram illustrating a signal flow for checking input / output ports of a mobile communication switch according to the present invention, and FIG. 3 is a diagram illustrating in detail only a daily / output port mounted in an input / output port backboard of FIG. 2. to be.

First, the input / output terminal of the operator terminal 30 is connected to one I / O port (for example, port 15) among a plurality of I / O ports mounted on the I / O port backboard 31, and the I / O port All I / O ports of the back board 31 are connected to the I / O control processor 32. In addition, as shown in FIG. 3, an RS-232C table having a Tx pin and an Rx pin is connected to the Tx pin and the Rx pin of the plurality of I / O ports, and the Tx pin and the Rx pin of the RS-232C cable are connected to each other. It is comprised by common (soldering).

The operation of checking whether a plurality of I / O ports 0-15 mounted on the I / O port backboard 31 through such a connection configuration will be described with reference to FIGS. 2 and 3.

First, when an operator inputs a command for detecting a bad I / O port using the operator terminal 30 (1), the input command is a port of the I / O port backboard 31, for example, 15 times. It is input to the I / O control processor 32 through the port (2).

The I / O control processor 32 transmits the received instruction to the MMDST 33b (3) via the OS 33a of the MCDA 33 (4).

Upon receiving the command, the MMDST 33b starts to check whether all I / O ports mounted on the I / O port backboard 31 are abnormal. That is, the MMDST 33b first requests the OS 33a to write one byte of characters to the IOPA 32 to the OS 33a in order to check for an abnormality of one port (5), and the OS ( 33a) again asks the firmware of IOPA 32 to write a byte of characters to the port (6).

The IOPA 32 converts one byte of characters into the I / O port backboard 31 according to the request of the OS 33a, and the corresponding I / O port RS as shown in FIG. -232C port) to the Tx pin (7).

One byte of characters through the Tx pin of the corresponding I / O port is transferred to the Tx pin of the RS-232C cable 34 (7 '), and one byte of characters transmitted to the Tx pin of the RS-232 cable is again RS- After being delivered to the Rx pin of the 232 cable 34, it is looped back to the Rx pin of the corresponding I / O port (8 'Flow). At this time, a character of one byte from the Tx pin to the Rx pin of the RS-232C cable 34 loops back because the Tx pin and the Rx pin of the RS-232C cable 34 are common to each other.

In this way, a character of one byte looped back to the Rx pin of the RS-232C port is transmitted to the MMDST 33b through the IOPA 32 and the OS 33a (8, 9, and 10 flow in FIG. 2).

Therefore, the MMDST 33b loops back and compares whether a character of a byte received and a character of a byte initially transmitted are identical to each other and determines that the corresponding port is a normal port if the characters are identical to each other. If they are not identical to each other or if they do not receive the transmitted characters, it is determined that the I / O status of the corresponding port is bad. After temporarily storing the I / O port checking result value thus determined, the remaining I / O ports mounted on the I / O port backboard 31 are checked for abnormality in the same manner as described above.

When all I / O ports are checked for abnormality in this way, the checking result is sent to the operator terminal 30 through the I / O port connected to the OS 33a, the IOPA 32, and the operator terminal 30. Display (flows 11, 12, 13 in Fig. 2). Therefore, the operator can easily check whether there is an abnormality of the I / O port by looking at the check result value of the displayed I / O port, and perform the maintenance work on the defective I / O port.

A method for checking an I / O port of a mobile communication switch according to the present invention corresponding to such operation will be described step by step with reference to FIG. 4.

4 is a flowchart illustrating an operation of an input / output port checking method of a mobile communication switch according to the present invention.

First, when an operator inputs a command for detecting a bad I / O port to the operator terminal 30 (S101), the operator terminal 30 is an MMDST 33b through an I / O port connected to the operator terminal 30. Transfer to (S102). That is, the command input from the operator terminal 30 passes through the corresponding I / O port, IOPA 32, and OS 33a of the I / O port backboard 31 connected with the operator terminal 30 to the MMDST 33b. Delivered.

Receiving the command, the MMDST 33b starts detecting abnormality of the plurality of I / O ports mounted from the I / O port backboard 31 from 0 to the last port (S102).

Subsequently, it is determined whether the current port to be detected is the last I / O port (S103). If the determination result indicates that the current I / O port is not the last port, the MMDST 33b sends the corresponding port to the OS 33a. It is requested to write a single byte of character (S104).

Subsequently, the OS 33a requests the firmware in the IOPA 32 to write one byte of characters to the corresponding I / O port (S105), and the IOPA 32 receives one byte of the character and receives one byte. The letter of I is transmitted to the Tx pin of the corresponding I / O port of the I / O port back board 31 (S106).

Subsequently, the Tx pin of the corresponding I / O port transfers the received one-byte character to the Tx pin of the RS-232C cable 34 (S107), and the Tx pin of the RS-232C cable 34 again corresponds to the Tx pin. The Rx pin of the common RS-232C cable 34 transmits one byte of characters (S108).

Subsequently, the Rx pin of the RS-232C cable 34 transfers one byte of characters back to the Rx pin of the corresponding I / O port (S109). As a result, the character of one byte transmitted from the MMDST 33b is looped back through the Tx pin and the Rx pin of the RS-232C cable 34, and then transferred back to the Rx pin of the corresponding I / O port.

The one byte character looped back to the Rx pin of the corresponding I / O port is transferred to the MMDST 33b through the IOPA 32 and the OS 33a.

Subsequently, it is determined whether a character having a size of one byte looped back is received (S110). When the character of one byte is received as a result of the determination, it is determined whether the received character of the received one byte and the first transmitted character are the same characters. It is determined (S111).

As a result, if the character of the first byte transmitted and the received character of the loop back are the same as each other, it is determined that the I / O state of the corresponding port is normal (S112). If it is not received or if the character is received in step S111 but the received character and the initially transmitted character are not the same as each other, it is determined that the corresponding I / O port is abnormal (S113).

In this way, the check result value of the corresponding I / O port is temporarily stored, and the presence or absence of abnormality is checked for all remaining I / O ports by the same method as described above.

In operation S103, if it is determined whether the checking is completed for all the I / O ports, and the checking of all the I / O ports is completed, the MMDST 33b organizes all the I / O port checking results and the operator terminal 30. (S114).

Therefore, the operator terminal 30 displays the check result value transmitted from the MMDST 33b (S115).

Summarizing the input / output port checking apparatus and method of the mobile communication switch according to the present invention, the Tx pin and the Rx pin of the RS-232C cable connected to the Tx pin and the Rx pin of the I / O port are common. If a command for checking for abnormality of a plurality of I / O ports is issued to the MMDST 33b through the operator terminal 30, the MMDST 33b transmits one byte of characters to the Tx pin of the I / O port. The Tx pin of the I / O port transfers to the Tx pin of the RS-232C cable, and the one-byte characters transmitted are looped back to the Rx pin of the I / O port through the Rx pin of the RS-232C cable.

In this case, the looped-back byte character is passed back to the MMDST 33b, and it is determined whether the first transmitted character and the looped-back received character are identical to each other. If it is determined that the normal state, and the character is not received within a certain time or the transmission character and the reception character is not the same with each other, it is determined that the corresponding I / O port is bad and outputs to the operator terminal (30).

After all, the present invention is connected to the I / O port with a loop-back capable RS-232C cable to check whether the I / O port is not connected to the operator terminal to check the abnormality of the I / O port on the operator terminal By doing so, you can detect bad I / O ports before connecting the actual operator terminals.

As described above, an input / output port checking apparatus and a method of a mobile communication switch according to the present invention can be connected to an RS-232C cable capable of looping back to check whether an I / O port is normally connected to an operator terminal. By connecting to the O port and allowing the operator to identify the bad I / O port before connecting the actual operator terminal, the operator can quickly identify the bad I / O port on demand and contribute to system quality improvement. have.

In addition, the present invention can find and solve problems related to I / O in a faster time in all systems (eg, PC, printer, CRT, etc.) that use I / O ports, which can shorten development and debugging time. It works.

Claims (4)

In systems with multiple I / O ports, including Tx and Rx pins, Input / output means for inputting a command for detecting whether the plurality of I / O ports are defective and outputting a detection result value for whether the I / O ports are defective; Loop back number that is connected to the I / O port and loops back a character having an arbitrary size input to the Tx pin of the I / O port through the Rx pin of the I / O port according to the command inputted from the input / output means. Sweets; a) generates a character having an arbitrary size according to the command input from the command input means and transmits it to the Tx pin of the I / O port; b) receives characters of any size looped back to the Rx pin of the I / O port by the loop back means, c) When the received character is compared with the character first transmitted through the Tx pin of the I / O port, if the same character is the same, the corresponding I / O port is determined to be normal. And an I / O port checking means for judging that the I / O port is abnormal and transmitting a determination result value to the input / output means. The method of claim 1, The loop back means is an I / O port checking device of a mobile communication switch, characterized in that the Tx pin and Rx pin is a common RS-232C cable. In the checking method of multiple I / O ports including Tx pin and Rx pin, Inputting a command to detect whether the plurality of I / O ports are defective; Generating a character having an arbitrary size according to the input command and transmitting the generated character to a Tx pin of the I / O port; Looping back a character having an arbitrary size input to the Tx pin of the I / O port to the Rx pin of the I / O port; Receiving a character having an arbitrary size looped back to the Rx pin of the I / O port, and comparing the received character with a character initially transmitted to the Tx pin of the I / O port; As a result of the comparison, if the received character and the transmitted character are the same characters, the corresponding I / O port is determined to be normal. If the characters are not identical to each other or if the character is not received for a predetermined time, the corresponding I / O port is abnormal. I / O port checking device of a mobile communication switch, characterized in that the step of determining and outputting the determination result value. 4. The I / O port checking apparatus of a mobile communication switch according to claim 3, wherein in the looping step, the loop back uses a common RS-232C cable between the Tx pin and the Rx pin.