KR100194586B1 - System Logic Channel Range Setting Management Method in Electronic Switching System - Google Patents

Abstract

The present invention relates to a system logical channel range setting management technique in an all-electronic exchange. In the prior art, data collision and inconsistency can be avoided by using a mixture without setting ranges for permanent, unidirectional incoming, unidirectional outgoing, and bidirectional logical channels. This is to solve the problem that occurs.

The present invention is a system-wide permanent, unidirectional, bidirectional system logical channel number (LCN) information change processing process for the TDX-10 ISDN packet exchange function of the switching system, and based on this, permanent, bidirectional logic as subscriber basic information By registering and checking the system LCN information range when registering a channel, and registering and confirming the system LCN information range when registering a unidirectional logical channel with a subscriber function, and outputting the registered system LCN information. It prevents the loss of system data consistency due to channel mixing between logical channels having different mutual characteristics during processing, and maintains the convenience of operation and reliability of data by maintaining the reference database at the system level.

Description

System Logic Channel Range Setting Management Method in Electronic Switching System

1 is a flow diagram of a permanent, unidirectional, bidirectional system Logical Channel Number (LCN) information change process according to the present invention.

2 is a flowchart illustrating a system LCN information range checking process when a subscriber registers a permanent, bidirectional logical channel according to the present invention.

3 is a flowchart illustrating a system LCN information range checking process when a subscriber registers a unidirectional logical channel according to the present invention.

4 is a flowchart for outputting system LCN information registered in FIGS. 2 and 3;

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exchange providing packet logical channel services in a system that accommodates ISDN functions, and more particularly to a system logical channel range setting management technique in an all-electronic switching center.

In general, a logical channel refers to a configuration in which a plurality of logical channels can be used by dividing one real channel when performing communication through one of physical channels composed of physical channels.

This logical channel number (LCN) assignment is provided by the switching system, eg YDX-10 ISDN packet system, in accordance with Recommendation Q931 of ITU-T X.25. do.

Here, the range of logical channels should include four types of logical channels: permanent, unidirectional incoming, unidirectional outgoing, and bidirectional logical.

Such a system-wide logical channel range setting function plays a role as a traffic light when a subscriber sets a logical channel and does not exist in the conventional structure.

That is, in the prior art, since the four channels are mixed without the range setting for each of the four logical channels, data conflicts and inconsistencies are caused due to the confusion of the operation management.

Accordingly, the prior art has a problem that the system data consistency is lost due to mixing between different logical channels during the call processing.

In order to solve such a problem, the present invention relates to a packet data processing method for setting a system logical channel range, and a set of these methods is called a data processing function.

Here, the data processing function refers to an operation function for reliably operating and managing the exchange data.

The present invention belongs to packet logical channel data processing among the data processing techniques.

Such logical channels include the four types of logical channels described above. Since these logical channels have different uses, the logical channels must be configured to use unique areas, and the logical channel range must be set and managed at the system level.

According to the above description, the present invention prevents loss of system data consistency due to channel mixing between logical channels having different mutual characteristics during call processing in an electronic switchboard, and maintains a system-wide reference database for convenience and data. The purpose of the present invention is to provide a system logical channel range management method in an all-electronic exchange to maintain the reliability of the system.

The present invention for achieving the above object, in a method for providing a permanent, unidirectional, bidirectional logical channel service in a packet switching system that accommodates the integrated information communication network (ISDN) function, the system-level persistent, unidirectional, bidirectional logical channel A first process of changing and processing system logical channel number (LCN) information for management; and a second process of checking and registering a range of system logical channel number information when registering permanent and bidirectional logical channels as basic information of subscribers based on the changed information; The third process of checking and registering a system logical channel number information range when registering a unidirectional logical channel for a packet appended user on the basis of the changed information, and the fourth process of outputting the registered system logical channel range information to the operator as described above It has the characteristics to operate and manage exchange data reliably.

Here, the first process is driven by the operator command, and after the input function is driven by the main program, if there is no abnormality by performing a system pre-check to perform the system logical channel range setting function for each logical channel type This is the configured data processing process.

This first process is a process of registering and changing system data using a database.

In the second and third processes, a system logical channel number (LCN) information change command is devised to reflect an operator's information in a database.

In addition, the first to third processes are a series of data processing processes that first configure data to be changed and then perform a database operation after all data configuration steps are completed.

In addition, in the fourth process, a registered system LCN information output command is devised and output to the user.

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

The logical channel of the present invention is a data processing technique for operating system data for operating without collision in the system.

The logical channels include permanent, unidirectional incoming, unidirectional outgoing, and bidirectional logical channels.

These logical channels are composed of packet call logical channels in the target system, TDX-10 ISDN.

Permanent Virtual Channel (PVC) and Two-Way Logical Channel (TWO) are provided as basic functions of packet subscriber among each logical channel, and One-way Incoming Logical Channel (LC1I) is provided. One-way Outgoing Logical Channel (LC1O) logical channels are separated by additional user functions.

These basic and additional functions can be easily changed according to user requirements.

For example, the LC1I add-on can be added as a basic function.

Since such system logical channel range data must always exist in the system, the system logical channel range data is initialized to date generation (DG) data at system startup.

The procedure for changing the system logical channel number (LCN) information for permanent, unidirectional and bidirectional logical channel management will be described with reference to FIG.

The packet processing block always resides in the system waiting for the operator's command.

In this way, when the packet processing block receives a drive by a man-machine interface command (MMC) that is an operator's command (S1), the packet processing block drives the process by the main program as to what the operation of the command means. It distinguishes by input (S2).

After analyzing the command input by dividing the operation of the operator's command means, first to check whether the system state is normal (S3, S4) when performing each function.

If the hardware state is not normal by the check of the system state (S4), the process is terminated with an error message (S5).

However, if the system state is normal in the above, the type of logical channel required by the analysis result of the operator command is determined (S6).

Based on this determination, four logical channels can be selected.

The first is the process of performing the system permanent logical channel range registration. When this is explained, the previously registered value is compared with the currently input value (S7), and if it is the same, the permanent logical channel is terminated. It is determined whether the low value PVC_low of E is greater than or equal to 0 and the high value PVC_high of the permanent logical channel is smaller than the low value LC1I_low of the one-way incoming logical channel (S8).

If it is small by this determination (S8), the newly inputted information is input to the database to change the database (S15) and finish (S16).

The second is a process of performing a system unidirectional incoming logical channel range registration, and compares a previously registered value with a currently input value (S9), and terminates if it is the same (S16).

If the comparison value is not the same, the high value PVC_high of the permanent logical channel is smaller than the low value LC1I_low of the unidirectional incoming logical channel, and the high value LC1I_high of the unidirectional incoming logical channel is short. Comparing whether or not it is smaller than the low value LC1O_low of the direction outgoing logical channel (S10), if this condition is satisfied, the newly inputted information is input to the database, the database is changed (S15), and the condition is not satisfied. In case it ends with an error message (S16).

The third step is to perform the system unidirectional outgoing logical channel range registration process, and compares the previously registered value with the currently input value (S11), and if it is the same, ends (S16).

If the comparison value is not the same, the high value LC1I_high of the one-way incoming logical channel is smaller than the low value LC1O_low of the one-way outgoing logical channel, and the high value of the one-way outgoing logical channel is high. If the value LC1O_high is smaller than the low value TWO_low of the bidirectional logical channel (S12), and if this condition is satisfied, the newly inputted information is input to the database to change the database (S15) and terminate (S16). .

Fourth, as a system bidirectional logical channel range registration process, a previously registered value is compared with a currently input value (S13) to terminate the same process (S16).

When the comparison value is not the same, the high value LC1O_high of the unidirectional outgoing logical channel is smaller than the low value TWO_low of the bidirectional logical channel, and the high value TWO_high of the bidirectional logical channel is greater than 255. If small or equal (S14), the newly inputted information is input to the database to change the database (S15) and terminate (S16).

In this way, when changing the range of the subscriber logical channel, it can be set only within the range of the low value and the high value of the corresponding logical channel among the system logical channels.

FIG. 2 is a flow chart illustrating a process for checking a system logical channel number (LCN) information range when registering a permanent, bidirectional logical channel by a subscriber, and is a process (CHG-PSLN-INFO) operating with reference to system logical channel number (LCN) information.

If the packet processing block receives a man-machine interface command (MMC) that is an operator command (S20), and the packet processing block determines that the command is a subscriber information changing process (S21), and is related to logical channel number (LCN) registration. (S22) Continue to the next step.

At this time, if the logical channel number (LCN) related information is not changed, the corresponding information changing function is performed (S23) and then terminated (S24).

When the logical channel number LCN is registered, it is determined whether it is a permanent logical channel number (PVC) (S25).

If an error occurs by this confirmation (S26), it ends (S24).

Then, it is determined whether the input range of the subscriber permanent logical channel (PVC) that the current subscriber intends to register as data is valid (S27). If the input range is out of the system PVC range, an error message is output (S28) and then terminated. (S24).

In addition, if the input range of the subscriber permanent logical channel does not deviate from the system PVC range, after performing an input (S29) to the data buffer to change the individual subscriber permanent logical channel (PVC) information, and performs a database change routine (S36) After it is finished (S37).

On the other hand, if it is not the permanent logical channel (PVC) (S25), it is determined whether the bidirectional logical channel (TWO) (S30).

In this case (S30), if the bidirectional logical channel (TWO), it is checked whether the variable input is normal (S31), and if there is an error (32).

However, if it is not the bidirectional logical channel by this determination (S30), the process ends (S37).

In addition, it is checked whether the variable input is normal (S31), and if there is no error, it is determined whether the input range of the subscriber bidirectional logical channel (TWO) to be registered as the current subscriber data is out of the system bidirectional logical channel (S33). ).

If it is determined that this determination is made (S33), an error message is output (S34) and ends (S32).

However, if it does not deviate, after completing the input (S35) to the data buffer to change the individual subscriber bidirectional logical channel information (S36) and performs a database change routine (S36) and ends (S37).

FIG. 3 is a flowchart illustrating a process of checking a system logical channel number (LCN) information range when registering a subscriber unidirectional logical channel, and is a process (REG-OUF) operating with reference to system LCN information.

If the packet processing block receives an MMC, which is an operator command, as input (S40), and if the packet processing block is determined that the command is related to registration of the subscriber information (S41) and is related to the logical channel number (LCN) registration (S42), it continues. If the LCN related information is not changed, the corresponding information change function is performed (S43), and then ends normally (S44).

When the logical channel number LCN is registered by the determination (S42), it is determined whether the logical channel number LCN is the unidirectional incoming logical channel LCN1I (S45).

By this determination (S45), it is checked whether the variable input is normal in the case of the unidirectional incoming logical channel (S46), and terminates when it is not normal, that is, when an error occurs (S4).

In addition, it is checked whether the variable input is normal (S46), and if it is normal, it is determined whether the input range of the subscriber unidirectional incoming logical channel LC1I to be registered as the current subscriber data is out of the range of the system LC1I (S47). ).

If the input range of the subscriber LC1I is out of the range of the system LC1I by this determination (S47), an error message is output (S48) and then terminated (S44). If not, the individual subscriber unidirectional incoming logical channel LC1I After completing the input (S49) to the data buffer in order to change the information (S56), and performs a normal end (S57).

On the other hand, it is determined whether the logical channel number LCN is the one-way incoming logical channel LC1I (S45), or it is determined whether it is the one-way outgoing logical channel LC10 (S50).

By this determination (S50), it is checked whether the variable input is normal in the one-way outgoing logical channel (S51), and terminates in error (S52).

If the variable input is normal by the confirmation (S51), whether the input range of the subscriber unidirectional outgoing logical channel LC1O to be registered as current subscriber data is out of the system unidirectional outgoing logical channel LC1O. If it is determined (S53), if it is out, after the output of the error message (S54), it ends (S52).

However, if it is not out of the range, after completing the input (S56) to the data buffer in order to change the individual subscriber unidirectional outgoing logical channel (LC1O) information, and after performing a database change routine (S56), to end normally (S57) do.

4 is a flowchart illustrating a process of outputting system logical channel number (LCN) information.

Here, the packet processing block always resides in the system and waits for an operator command.

In this way, if the MMC, the operator command, is received as input (S60), the packet processing block distinguishes what the operation of the command means (S61), and finishes analyzing the command input and performs each function first. Check whether is normal (S62, S63).

At this time, if the status is not normal by the confirmation (S63), the process is terminated with an error message (S64), and if it is normal, the type of the requested logical channel is determined (S65).

In this case (S65), after reading the data registered in the database (S66) and formatting the permanent logical channel (PVC) information (S67), the permanent logical channel (PVC) is requested to the requested operator terminal. ) Information is output (S68), and then normal termination (S78).

In the case where the unidirectional incoming logical channel LC1I is determined by the determination (S65), data registered in the database is read (S69), and the unidirectional incoming logical channel (LC1I) information is formatted (S70). Then, the unidirectional incoming logical channel (LC1I) information is output to the requested operator terminal (S71), and then normally terminated (S78).

In the case of the unidirectional outgoing logical channel LC1O by the determination (S65), after reading data registered in the database (S72) and formatting the unidirectional outgoing logical channel (LC10) information (S73), After outputting the unidirectional outgoing logical channel (LC10) information to the requested operator terminal (S74), the terminal terminates normally (S78).

In addition, in the case of the bidirectional logical channel (TWO) by the determination (S65), after reading the data registered in the database (S75) and formatting the bidirectional logical channel information (S76), the bidirectional logical channel to the requested operator terminal After the information is output (S77), the process is normally terminated (S78).

Such a system logical channel range setting scheme belongs to additional functions LC1I and LC1O which are distinguished from basic functions of packet subscribers (PVC, TWO).

These basic functions and additional functions are interchangeable.

In addition, in the logical channel range setting, the threshold value of the logical channel follows the ITU-T recommendation in principle, but it is flexible in that it can be changed according to the designer's intention.

This threshold is more meaningful in threshold setting than in numerical meaning.

In addition, the above-described logical channel is configured to be registered in the order of permanent, unidirectional incoming, unidirectional outgoing, and bidirectional logical channels, which is also in accordance with the ITU-T recommendation.

The present invention as described above is a system logical channel range setting management technique for registering and changing system data using a database, and prevents loss of system data consistency due to channel mixing between logical channels having different mutual characteristics during call processing. Maintaining the reference database at the system level maintains the convenience of operation and the reliability of the data.

Claims (10)

A method for providing persistent, one-way, and two-way logical channel services in a packet switching system that accommodates Integrated Services Digital Network (ISDN) function, the system logical channel number (LCN) for system-level permanent, one-way, two-way logical channel management A first process of changing and processing information, a second process of checking and registering a system logical channel number information range when registering the permanent and bidirectional logical channel, which is basic information of a subscriber, based on the information changed in the first process; A third process of confirming and registering a system logical channel number information range when registering a unidirectional logical channel for the subscriber additional user based on the changed information in the process; and registering system logical channel range information registered in the second process and the third process. The fourth step of outputting to the operator, characterized in that the operation and management of the exchange data reliably Management technique of system logical channel range setting in all electronic switch. The method of claim 1, wherein the first process comprises: a first step of pre-checking a system state after a function driven by an operator command is driven by a main program; and a logical channel when the system state is intact. And a second step of registering the system logical channel ranges in the database for each type. The method of claim 2, wherein the second step comprises steps 2-1 of inputting newly input information into a database according to a comparison of a previously registered value and a currently input value when the logical channel is a system permanent logical channel; If the logical channel is a system unidirectional incoming logical channel, step 2-2 of inputting newly input information into a database according to a comparison between a previously registered value and a currently input value; Step 2-3 of inputting newly inputted information into a database according to a comparison between a previously registered value and a currently input value in the case of a direction outgoing logical channel; and previously registered if the logical channel is a system bidirectional logical channel. In the electronic switchboard, characterized in that it consists of steps 2-4 of inputting newly inputted information into the database according to the comparison of the current value and the currently input value. Logical channel range setting management technique. 4. The method of claim 3, wherein the system logical channel range of the second step inputs initial data at system startup. 5. The method of claim 4, wherein the system logical channel range is set by an operator to an arbitrary low and high value. 2. The method of claim 1, wherein the second process comprises: a first step of determining whether the logical channel is a permanent logical channel if a logical channel number is registered after being driven by an operator command and driven by a main program; A second step of changing the database after inputting individual subscriber permanent logical channel information into the data buffer if the variable input is normal and the subscriber permanent logical channel input range corresponds to the system permanent logical channel range when the number is a permanent logical channel; If the logical channel number is the bidirectional logical channel determined by the first step, if the variable input is normal and the subscriber bidirectional logical channel input range corresponds to the system bidirectional logical channel range, individual subscriber bidirectional logical channel information is input to the data buffer. In the electronic switchboard, characterized in that the third step of changing the database after Stem logical channel setting range management techniques. 7. The all-electronic exchange according to claim 6, wherein the second process sets the range of the low and high values of the corresponding logical channels among the system logical channels when changing the subscriber logical channel range. System logical channel range setting management method in. The method of claim 1, wherein the third process comprises: a first step of determining whether the input channel is a one-way incoming logical channel if a logical channel number is registered after being driven by an operator command and driven by a main program; If the logical channel number is a unidirectional incoming logical channel, if the variable input is normal and the subscriber unidirectional incoming logical channel input range corresponds to the system unidirectional logical channel range, the individual subscriber unidirectional incoming logical channel information is data. A second step of changing a database after inputting to a buffer, and if the logical channel number is a one-way outgoing logical channel according to the determination of the first step, the variable input is normal and the subscriber one-way outgoing logical channel input range Is within the range of the system one-way outgoing logical channel, enter the individual one-way outgoing logical channel information into the data buffer and then open the database. A system logical channel range setting management method in an all-electronic exchange comprising a third step of changing. The all-electronic switch according to claim 8, wherein the third process is to set only within a range of low and high values of a corresponding logical channel among system logical channels when the subscriber logical channel range is changed. System logical channel range setting management method in. The method of claim 1, wherein the fourth process comprises: a first step of checking a system state after a function input driven by an operator command is driven by a main program; and a type of a logical channel when the system state is normal. A second step of discriminating, a third step of reading data registered in the determined logical channel database, a fourth step of formatting each logical channel information by the read data, and the requesting operator terminal A system logical channel range setting management method in an all-electronic exchange comprising a fifth step of outputting logical channel information.