JP2501123B2 - Packet switching control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a facility capable of sharing a first type packet network with a second type packet network having a different interface. The non-common equipment as a common equipment relates to a packet switching control method for coexisting packet networks that coexist as unique equipment.

[Conventional technology]

CC is a packet switching control method for storing and switching control.
The exchange control method for packet networks equipped with packet communication functions based on ITT (International Telegraph and Telephone Consultative Committee) Recommendation X series and the exchange control method for packet networks equipped with packet communication functions based on CCITT Recommendation I series are known. Has been.

In the packet network based on the former Recommendation X series, the subscriber line accommodated in the network can connect only one terminal,
Also, as the type of terminal, only packet terminals can be connected,
Only 48 kb / s can be used as a channel.

On the other hand, in the latter packet network based on Recommendation I series, up to eight terminals can be connected to the subscriber line accommodated in the network, and there are two types of terminals: packet terminal and line terminal (telephone). 64 types as channels can be connected
Up to 3 channels can be used, 2 kb / s and 1 16 kb / s.

Thus, it can be said that the packet network based on the recommendation I series is a technologically advanced packet network based on the packet network based on the recommendation X series.

FIG. 12 is a block diagram showing a conventional example of a switching control system for packet communication based on Recommendation X series.

The system shown in the figure includes a maintenance terminal device (1.1) for issuing commands to the system and outputting messages from the system, and a file memory device (1.2) having a backup program for the entire X interface packet switching program. Maintenance operation control processor (1.3) and X interface packet terminal (1.
4), the packet processor (1.) that accommodates the trunk line (1.5) via the data line controller (1.6), respectively.
7) and a maintenance operation control processor (1.3) and a communication link device (1.8) that connects a plurality of packet processing processors (1.7) with a high-speed line if desired.

The maintenance operation control processor (1.3) has an execution management program (1.9), a restart initialization program (1.10), and a maintenance operation program (1.11), which have the functions described below, mounted on its built-in memory. The packet processor (1.7) also has an execution management program (1.9) and a call processing program (1.12) on its built-in memory.

Each of the programs (1.9) to (1.12) has the following functions.

First is the execution management program (1.9).
It has a function of running scheduling of each program of (1.10) to (1.12) and a function of controlling communication between processors, and controls super-multiple real-time processing which is a feature of exchange processing.

Next is the restart initialization program (1.10), which has the functions and data necessary for the startup of each processor that constitutes the switching center and the restart from the system down during service. (1.9), (1.11), (1.1
2) Pull up the program from the backup file (1.2) (read it and pass it to each processor), and initialize various data, maintenance terminal device (1.1), and file memory device (1.2). It also has a function of changing / managing the device state of the processor, communication link device, maintenance terminal device, and file memory device.

Furthermore, it is a maintenance operation program (1.11), which performs command processing and message processing necessary for maintaining the X interface packet switching network, subscriber data management, audit / observation, subscriber line and relay line. test,
Provide maintenance personnel with various functions such as file update and display of various data contents.

The call processing program (1.12) performs protocol control with the packet terminal (1.4) having an X interface, number translation processing, transmission trunk selection processing, and the like. Also, the terminal (1.
4) Sending the packet sent from the relay line (1.5) to the trunk line (1.5), sending the packet received from the trunk line (1.5) to the destination packet terminal (1.4), and sending the packet to the trunk line (1.5) It adds the header between packet stations used during transmission / reception, deletes the header between packet stations, and performs order control processing.

The above is the description of the exchange control system for packet communication based on the recommendation X series, but the exchange control system for packet communication based on the recommendation I series also exists separately, and both are technically technical. Some were similar and some were not. That is, the I interface is different from the X interface in terms of numbering plan, protocol, service specifications, and the like.

[Problems to be Solved by the Invention]

Here, the subscriber terminal having the packet communication function of the X interface is more advanced than the subscriber terminal having the packet communication function of the I interface.
If you switch to all the subscriber terminals of the interface,
The story is simple, but as a matter of fact, due to various reasons, such a transition does not take place overnight, and they coexist for a considerable period of time.

Therefore, conventionally, a packet network for a subscriber terminal having an X interface packet communication function and a packet network for a subscriber terminal having an I interface packet communication function have been provided independently of each other. Although this is excellent in terms of reliability, even if there is equipment that can be shared by both networks, it is not shared, so there was the problem of high costs.

An object of the present invention is to solve the problems of the prior art,
By implementing both the X and I interface packet communication functions on the same switching equipment, the switching equipment that can be shared can be shared and a packet switching control method that can reduce equipment investment costs is provided. To do.

[Means for solving the problem]

To achieve the above object, in the present invention, the addition / change of a new service or protocol in one interface does not affect the other interface, and in particular, the other interface is affected by the quality deterioration due to the modification of the control software. Assuming that there is no control system, we considered the following shared system of exchange facilities to reduce the capital investment cost.

In other words, when a new service is added or a protocol is changed, the control software is expected to be greatly changed, and if the quality deterioration of other interfaces is affected, the packet processing for the user will be immediately deteriorated. The equipment will be provided for each interface and the equipment will not be shared. On the other hand,
Even if a new service is added or a protocol is changed, the control software is slightly changed, and the effect on the user is small. The maintenance operation control device and the trunk line control packet processing device share the facility. .

[Action]

The packet processing device provided for each interface is
Packet exchange processing for each interface is performed using common equipment.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention.
The system shown in the figure includes a maintenance operation processor (3.1), a maintenance terminal device (3.5) and a file memory device (3.6) housed therein, a trunk line processor (3.4) and a trunk line (3.11) housed therein. Included as shared facilities,
Furthermore, as the equipment corresponding to each interface, an X interface processor (3.2) and an X interface packet terminal (3.7) accommodated therein, an I interface processor (3.3) and an interface exchange (3.9) accommodated therein, and the interface exchange (3.9 1) packet terminal (3.8) accommodated in (1)).

Since the I interface packet terminal (3.8) can make and receive a packet call and a line call as described above, the interface switch (3.9) identifies and separates both, and the I interface processor (3.
It is sent to 3) via the station line (3.10). The other (1.8) is a communication link device.

The maintenance operation processor (3.1) has an execution management program (2.1), a restart initialization program (2.2) and a maintenance operation program (2.3) in its internal memory, and the X interface processor (3.2) An execution management program (2.1) and an X interface subscriber line processing program (2.6) are installed in the built-in memory.

Further, the I interface processor (3.3) has an execution management program (2.1) and an I interface subscriber line processing program (2.5) installed in its internal memory.
The trunk line processor (3.4) has its built-in memory,
The execution management program (2.1) and the trunk line processing program (2.4) are installed.

The feature of the present invention is that the exchange facility common exchange method is realized by devising the software configuration and the processing method, and the following points can be said to be the points of its realization.

(1) A method of configuring the I interface and X interface packet switching programs and a method of providing various processing functions to each processor.

(2) System initial setting method in the case where each processor has a plurality of different software.

(3) A man-machine interface for maintaining different packet switching networks using the same switching equipment and a maintenance operation processing program configuration method based on the interface.

(4) Call processing method for sharing a trunk line in the I interface and X interface packet networks.

 Hereinafter, each of the above items will be specifically described in order.

(1) Regarding a method of arranging various processing functions constituting the I interface and X interface packet switching programs in each processor.

Fig. 2 shows the entire I interface packet switching program (part surrounded by 2.7) and X in this switching system.
It shows the configuration of the entire interface packet switching program (the part surrounded by 2.8). The I interface packet switching program is the execution management program (2.
1), restart initialization program (2.2), maintenance operation program (2.3), trunk line processing program (2.4), I interface subscriber line processing program (2.5)
The interface packet switching program is an execution management program (2.1), restart initialization program (2.2), maintenance operation program (2.3), trunk line processing program (2.4), X interface subscriber line processing program (2.
6) consist of The execution management program (2.1), restart initialization program (2.2), maintenance operation program (2.3), and trunk line processing program (2.4) are shared by the I interface packet switching program and the X interface packet switching program.

Each of the above program parts has the following functions.

Execution management program (2.1) Has a function to schedule running of each program of (2.2) to (2.6) above and a function to control communication between processors, and controls super-multiple real-time processing, which is a feature of exchange processing. To do.

Resuming initialization program (2.2) Has various functions and data necessary for starting each processor that constitutes the switching center and for restarting from system down during service. Above (2.1), (2.3) ~ ( 2.6)
Backup file of the program (3.6 in Fig. 1)
From (to read and pass to each processor), various data, maintenance terminal device (3.5), file memory device (3.6) is initialized. Further, it has a function of changing / managing the device state of each processor, communication link device, maintenance terminal device, and file memory device.

Maintenance operation program (2.3) I interface and X interface Performs command processing and message processing required for maintaining packet switching network, subscriber data management, audit / observation, subscriber line and trunk line test, file update, various Provide maintenance personnel with various functions such as displaying data contents.

Trunk line processing program (2.4) Processing for sending packets sent from I interface and X interface packet terminals to the trunk line,
While performing the process of transmitting the packet received from the relay line to the processor housed in the destination packet terminal,
It creates and deletes headers between packet stations used when sending and receiving packets to and from the trunk line, and performs order control processing.

I interface subscriber line processing program (2.5) Performs protocol control with the packet terminal (3.3) having an I interface, number translation processing, transmission trunk line selection processing, and I interface subscriber accommodation switch in FIG. Control the inter-station line with (3.9).

X interface subscriber line processing program (2.6) Performs protocol control with the packet terminal (3.7) having an X interface, number translation processing, and transmission relay line selection processing.

Next, referring again to FIG. 1, the method of allocating each program group described in FIG. 2 to each processor will be described again.

The maintenance operation processor (3.1) containing the maintenance terminal device (3.5) and the file memory device (3.6) has an execution management program (2.1), a restart initialization program (2.2),
The maintenance operation program (2.3) is installed. The X interface processor (3.2) accommodating the X interface packet terminal (3.7) has an execution management program (2.1), X
The interface subscriber line processing program (2.6) is installed. I interface The packet terminal (3.8) is directly accommodated and the circuit switched call and the packet switched call are distributed I
Inter-office line (3.1 with interface switch (3.9))
The I interface processor (3.3), which sends and receives packet calls via (0), has an execution management program (2.
1), I interface subscriber line processing program (2.5) is installed. The trunk line processor (3.4) accommodating the trunk line (3.11) is equipped with an execution management program (2.1) and a trunk line processing program (2.4).

Note that other processors (3.
2, 3.3, 3.4) can be installed if desired.

(2) About the system initial setting method when a plurality of different software exist in each processor.

FIG. 3 shows a part of data referred to when the system is started up and restarted.

In the figure, (4.1) is a processor type table in which the type of each processor can be indexed by using the processor number as a key. Here, the processor type is a maintenance operation processor, an I interface processor, an X interface processor, a trunk line processor. It shows the distinction of. (4.2) to (4.5) are files for each processor type and data to be used when pulling up. Transfer source file memory address and transfer destination for each pulling segment (pulling up unit) from the file memory (3.6) that is a memory backup The main memory address is shown.
(4.2) is for raising the program installed in the maintenance operation processor, similarly (4.3) is for the I interface processor, (4.4) is for the X interface processor, and (4.5) is for the trunk line processor.

The programs used by each processor are collectively stored in the file memory device (3.6) for backup, and are sequentially read from the file memory device (3.6) and passed to each processor when needed by each processor. This is called raising. The reason for doing this is that even if the programs used by each processor are fixedly installed on each processor from the beginning, if the processor goes down, the program will be destroyed and unusable. In such a case, the program stored in the backup file memory device (3.6) is read and passed.

The processor type table of (4.1) is a data type that is characteristic of this system, which has not existed in the past. As described later in FIG. 4, a backup file (3.
It is necessary to judge the file type of each processor when transferring files from 6).

FIG. 4 shows a processing flow when the system is started up or restarted.

Hereinafter, description will be sequentially made according to the processing flow shown in FIG. First, as in the conventional case, a backup file (3.6) is provided for the emergency processing routine, which is a part of the restart initialization program, by the hardware (not shown emergency circuit included in the maintenance operation processor (3.1) in FIG. 1).
From the specified address (step 5.1), and further using this emergency processing routine, the restart initialization program body and the file pull-up control table for the maintenance operation processor (Fig. 4.2) are pulled up to the internal memory of the maintenance operation processor (3.1). (Step 5.2).

According to the control table (4.2) that has been raised, the restart initialization program itself has the remaining programs installed in the maintenance operation processor (3.1), the remaining file pull-up control table (Fig. 3, 4.3 to 4.5), and the processor type table ( (Fig. 3, 4.1) is pulled up onto the memory (step 5.3).

After this, the restart initialization program body indexes the processor type table (4.1) and creates a list of the same processor type (step 5.4).

The restart initialization program body uses the created list and the file pull-up control table of (4.3) to (4.5) to install each program in the I interface processor (3.3) and each program in the X interface processor (3.2). Backup files (3.6) for each program installed on the trunk line processor (3.4)
To the memory of the maintenance operation processor (3.1) (step 5.5), and then to the target processor via the communication link (step 5.6).

(3) Man-machine interface for maintaining different packet-switched networks using the same switching equipment and a maintenance operation processing program configuration method based on the interface.

FIG. 5 shows a command input procedure for maintaining the I interface packet network and the X interface packet network using the same maintenance terminal (3.5 in FIG. 1).

In the figure, (6.5) to (6.9) are maintenance terminals (3.5 in Fig. 1).
The screen is shown when the display device (not shown) is viewed from the front, and changes in time series according to maintenance personnel operations (6.1) to (6.4).

 The operation will be sequentially described below according to the operation of the maintenance person.

Before inputting a command from the maintenance terminal device (3.5) using a keyboard or the like (not shown), a PH mark is displayed in the upper right corner of the display device of the maintenance terminal (3.5) (screen 6.5). This indicates that the maintenance terminal (3.5) is currently in the maintenance mode of the I interface packet network (indicating that the terminal is dedicated to maintenance of the I interface packet network). In this state, when the maintenance person wants to input a maintenance command for the X interface packet network, the maintenance person presses the function key No. 8 of the keyboard (not shown) (operation 6.1). As a result, the maintenance terminal (3.5) shifts to the maintenance mode of the X interface packet network, and the PS mark indicating the maintenance mode of the X interface packet network is displayed on the display (screen 6.6).

After that, the maintainer inputs the command (¥ REINo.: 1) for maintaining the X interface packet network twice (6.2) and (6.3) in succession (the image of the command input on screens 6.7 and 6.8). And the response message from the system "The command completed successfully" is displayed). After that, when the maintainer wants to maintain the I interface packet network, he / she presses the function key No. 9 of the keyboard (not shown) (operation 6.4). As a result, on the display of the maintenance terminal (3.5), as well as the screen (6.5)
The PH mark is displayed, and the maintenance terminal (3.5) shifts to the maintenance mode of the I interface packet network again (screen 6.9).

FIG. 6 shows how the command input method is adopted to prevent erroneous command input. In the same manner as in FIG. 5, maintenance command operations (7.1) to (7.3) are performed. , Maintenance terminal (3.5) display screen (7.4) ~
(7.7) shows that it changes in time series.

In FIG. 6, the first maintenance mode is the maintenance mode of the X interface packet network, and the PS mark is displayed on the display (screen 7.4). Here, the maintenance person presses the function key No. 9 to perform maintenance of the I interface packet network, and shifts the maintenance mode to the maintenance mode of the I interface packet network (screen 7.5). Next, the maintainer had been submitting a command for maintaining the I interface packet network, but made a mistake in the command parameter and entered a parameter that can only be used for the X interface packet network (operation 7.
2). In this case, the system outputs an error message and refuses to input the command to the system (screen
7.6 "Displayed a command parameter error" from the system). After this, the maintenance person corrects the command parameter and inputs the command again (Maintenance person operation 7.3, screen 7.7).

As described above, in the present method, the non-conventional command input method of switching the maintenance mode by pressing the function key is used. The reason why the above maintenance mode is provided will be described with reference to FIG.

FIG. 7 shows the maintenance functions of the X interface packet network and the I interface packet network. (8.
1) is the maintenance function that is required for the maintenance of the I interface packet network, and (8.2) is the maintenance function that is required for the maintenance of the X interface packet network. For example,
If a device is unique to the X interface packet network, the function for displaying the status of the device belongs only to (8.2), not to (8.1). (8.3) is a function commonly required for maintenance of I, X interface packet networks.
For example, the function of displaying the total number of outgoing calls in the network is necessary for both the I interface packet network and the X interface packet network.

Here, the function group of (8.3) can express commands in exactly the same format if the I and X interface packet networks are maintained from different dedicated maintenance terminals.

However, when the I / X interface packet network is maintained using the same maintenance terminal, for example, the entered command is a command to display the total number of outgoing calls of the I interface packet network or the total number of outgoing calls of the X interface packet network. It becomes necessary to distinguish whether the command is to display.

The above PS / PH mode provides information for this purpose, so that the system allows the commands entered in PH mode to be used for I interface packet network maintenance, and the commands entered in PS mode to be X interface packets. Can be distinguished from network maintenance.

Further, as shown in FIG. 6, if a command belonging to (8.1) is input during the PS mode (X interface packet maintenance mode), for example, a command error can be generated and it is necessary to prevent erroneous operation.

FIG. 8 is a diagram showing a maintenance operation program configuration method and a flow from command input to execution.

In FIG. 8, (9.1) shows the information transferred from the maintenance terminal device (3.5) to the maintenance operation program, and the contents are the maintenance mode type (9.2) and the command information entered by the maintenance person (9.3). . (9.4) is a command analysis program for judging the command type, and comprises a maintenance mode judgment part (9.5), an X interface command analysis program (9.6), and an I interface command analysis program (9.7). (9.8) and (9.9) are command execution programs that realize the required command functions.
Generally, it is provided for each command type (9.8 for command A, 9.9 for command B). The command B execution program of (9.9) consists of the maintenance mode judgment part (9.10), the X interface command B execution program (9.11), and the I interface command B execution program (9.12) (9.8 command A execution program). Is the same configuration).

Next, the processing from command input to execution will be described with reference to FIG.

The command input from the maintenance terminal (3.5) is used in the command analysis program (9.
4) is transferred to. Command analysis program (9.4)
Based on this information, the maintenance mode determination part (9.5) first determines the maintenance mode type (9.13). In FIG. 8, since the maintenance mode is PH, the process is passed to the I interface command analysis program (9.7). The I-interface command analysis program (9.7) determines that the command type is command B as a result of analyzing the command type by function name (9.14), and transfers the processing to the command B execution program (9.9) together with the maintenance mode type and command information. (As a result of command analysis, if the command cannot be executed in PH maintenance mode, an entry is passed to the message output program in the maintenance operation program as an error (9.18)).

In the command B execution program (9.9), the maintenance mode determination part (9.10) determines the mode type (9.15) based on the similarly inherited information. Since it is PH in this example, the process is passed to the command B execution program for I interface (9.12). The I interface command B execution program (9.12) analyzes the command parameter type and its value (9.16), and determines the execution routine (9.17) that realizes the required command function. If it cannot be executed, an entry is passed to the message output program in the maintenance operation program as an error (9.19).

The configuration method of the maintenance operation program in this method has been described above. The feature is that the maintenance operation program is used to completely separate the maintenance operation program for the I interface and to simplify and create the program configuration. The point is that it is easy.

(4) Call processing method for sharing a trunk line in the I interface and X interface packet networks.

First, a translator configuration, which is a key point in the shared processing of the trunk line equipment, will be described. Reference numeral (10.1) in FIG. 9 is a translator (a number translation table for determining the ground, etc.) in this system. This translator exists in the memory of all other processors except the maintenance processor (3.1), and the contents are the same. (1
0.7) is the translator on the I interface processor (3.3), (10.8) is the X interface processor (3.
2) The above translator, (10.9) shows the translator on the trunk line processor (3.4).

Before describing the translator configuration of (10.1), the numbering system of the I interface packet network and the X interface packet network will be described. Generally, in the I interface packet network, the number format is the conventional telephone network (9
Digit), the called party number when making an out-of-city call is "0 + area code + local number + subscriber number", and the called party number when making a call in the city is "local number + join Person number ". In addition, in the X interface packet network, the incoming subscriber number is 7 digits "station number + subscriber number" throughout the country. As will be described later, when an I interface packet network subscriber makes a local call, the area code is always given on the system side, and processing is performed within the system as a long distance call. It makes it easy to distinguish from numbers.

By utilizing the fact that the called subscriber number is always processed in the long-distance mode when originating from the I-interface packet network, the translator in (10.1) uses the I-interface packet network and the X-interface packet network translators. It is created by integrating it, which is a feature that has never existed before. That is, the first digit is "0"
Whether or not the communication is in the I interface packet network or the X interface packet network can be determined (10.2), and after that, a dedicated expansion tree can be created for each. . (10.3) is an expanded tree of the I interface packet network, and (10.4) is an expanded tree of the X interface packet network.

The translator expansion process itself is the same as before, and if expanded to the last digit, the communication type is in-house communication, and the called terminal number (IPTN; processor number + serial number within the processor) is obtained as the expansion result (10.5). If the destination number (NOC) is obtained on the way, the communication type is outgoing connection (10.6).

Regarding the shared processing of the relay line based on the above translator configuration, the processing at the time of outgoing call is described in FIG. 10 and the processing at the time of incoming call is described in FIG.

FIG. 10 shows the processing when the I interface subscriber is originated.

The I-interface subscriber processing program looks at the called subscriber number in the received CR (calling) packet and determines by program processing whether the first digit is "0" or not (11.1). If it is other than "0", the subscriber data of the calling subscriber is searched with the accommodation position of the calling subscriber as a key, and the area code of the calling subscriber displayed in the subscriber data is obtained. It is added to the called party number to make the called party number in the out-of-city format (11.2).

After that, expand the translator described in Fig. 9,
Ask for NOC or IPTN (11.3). If the NOC is found, the trunk line accommodation table is indexed using the NOC as a key, the processor number in which the trunk line to the NOC is housed is searched, and the packet is transferred to the found trunk line housed processor as in the conventional case. Yes (11.4). In the trunk line processing program on the trunk line accommodating processor, a packet is provided with an inter-office header consisting of information such as the called subscriber number, NOC, and sequence number, and sent to the trunk line (11.5).

FIG. 11 shows the processing when the trunk line accommodating processor receives a call.

The relay line processing program uses the CN received from the relay line.
(Incoming call) Extract the called subscriber number from the packet (12.
1). This number is the I interface packet network number unified in the area code format on the calling side or the 7-digit X interface packet network number. The trunk line processing program develops the translator of FIG. 9 with this number,
Request the IPTN (12.2). After that, the packet is transferred to the processor having the processor number occupying the high-order bits of the obtained IPTN (12.3).

As described above, in this embodiment, by developing the integrated translator, it becomes possible to share the trunk line with the X interface packet network and the I interface packet network.

〔The invention's effect〕

As described above, according to this book, by implementing the packet communication functions of the X and I interfaces in the same switching device, the maintenance operation control device and the trunk line can be shared by both networks. It can be expected to reduce investment costs.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the configuration of the entire I interface packet switching program and the entire X interface packet switching program, and FIG. 3 is the system startup and restart. FIG. 4 is an explanatory view showing a part of data to be referred to, FIG. 4 is a chart showing a processing flow at system startup and restart, and FIG. 5 is an I interface packet network and an X interface packet network using the same maintenance terminal. FIG. 6 is an explanatory diagram showing a command input procedure for maintenance, FIG. 6 is an explanatory diagram showing a situation of erroneous command input prevention, and FIG. 7 classifies maintenance functions of the I interface packet network and the X interface packet network. Fig. 8 shows the maintenance operation program configuration and the flow from command input to execution. Fig. 9 shows the Explanatory view showing the translator construction method, the
FIG. 10 is a flow chart showing the processing when the I interface subscriber is called, FIG. 11 is a flow chart showing the processing when the trunk line accommodating processor is called, and FIG. 12 is the conventional packet switching control method of the X interface packet communication. It is a block diagram. Explanation of symbols 2.1 ... Execution management program, 2.2 ... Restart initialization program, 2.3 ... Maintenance operation program, 2.4 ... Trunk line processing program, 2.5 ... I interface subscriber line processing program, 2.6 ... X interface subscriber line processing program,
2.7 ... I interface packet switching program, 2.8 ...
X interface packet switching program, 3.1 ... Maintenance and operation processor, 3.2 ... X interface processor,
3.3 ... I interface processor, 3.4 ... Trunk line processor, 3.5 ... Maintenance terminal device, 3.6 ... File memory device, 3.7 ... X interface packet terminal, 3.8 ... I interface packet terminal, 3.9 ... I interface switch, 3.10 ... Interoffice line, 3.11 ... Relay line

Claims (5)

(57) [Claims] 1. A facility capable of making a first type packet network and a second type of packet network having a different interface different from each other are common facilities, and non-common facilities are respectively. In a packet switching control system for coexisting packet networks coexisting as equipment unique to the above, a maintenance processor as common equipment, a packet processor belonging to the first type (hereinafter, referred to as a first type processor), A packet processing processor belonging to the second type (hereinafter referred to as a second type processor),
A trunk line processor as common equipment, a common link connected to each processor, a maintenance terminal device and a file memory device accommodated in the maintenance processor, and a first type processor accommodated in the first type processor. A terminal belonging to one type, a terminal belonging to the second type accommodated in the processor of the second type, and a repeater line extending to another network accommodated in the relay line processor. A packet switching control system characterized in that each processor is equipped with a required processing program. 2. The packet switching control system according to claim 1, wherein the packet network of the first type is a packet network having a packet communication function based on CCITT (International Telegraph and Telephone Consultative Committee) Recommendation X series. The second type packet network is a packet network having a packet communication function based on CCITT Recommendation I series, the first type processor is an X interface processor, and the second type
Is a I interface processor, the terminal belonging to the first type is an X interface packet terminal, and the terminal belonging to the second type is accommodated in the I interface processor via an interface switch. It is an I interface packet terminal that is executed by the maintenance operation processor by sharing the execution management program, the restart initialization program, the maintenance operation program, and the trunk line processing program with the I interface packet switching program and the X interface packet switching program. A management program, a restart initialization program, and a maintenance operation program are installed, an execution management program and a relay line processing program are installed in the trunk line processor, and the execution interface program is installed in the X interface processor. In addition to the programs, a unique X interface subscriber line processing program is installed, and the I interface processor is provided with the execution management program and a unique I interface subscriber line processing program. Packet switching control method. 3. The packet switching control system according to claim 2, wherein the processor number can be used as a key to index each processor type of a maintenance operation processor, an I interface processor, an X interface processor, and a trunk line processor. A type table is provided in the maintenance operation processor, and when the system is started up, the maintenance operation processor transfers the backup memory read from the file memory device to each processor identified by referring to the table. Packet switching control method. 4. The packet switching control system according to claim 2, wherein the maintenance mode is changed to a maintenance mode of an I interface packet network and an X interface packet network by operating a function key from a maintenance terminal device accommodated in the maintenance operation processor. The packet switching control method is characterized in that the maintenance mode is switched to another maintenance mode and then a common maintenance command is input to perform maintenance. 5. The packet switching control system according to claim 2, wherein the called subscriber number sent from the I interface network is always changed to that of the long-distance calling form to obtain the called subscriber number sent from the X interface network. By providing the system with means for facilitating the identification of each of the other, all the other processors except the maintenance and operation processor have the same structure as the translator as the number translation table for determining the destination etc. from the destination subscriber number. A packet switching control method characterized by being installed in.