JPH01208044A - Distributed network system - Google Patents

Abstract

PURPOSE:To respond to the movement of a terminal, etc., flexibly by attaching a physical sequence number and a logical number on the terminal and providing a maintenance console provided with a correspondent table capable of performing the input, change, and storage of those numbers. CONSTITUTION:A console 11 having the correspondent table for the physical number and the logical number of each terminal is provided in a master transmission equipment 1, then, the input, change, and storage of them are enabled. For example, in case of transmission from the terminal 4 to the terminal 8, the logical number of the terminal 8 is inputted in the call of the terminal 4. Thereby, a destination transmission equipment number 3 is judged by the above stated correspondent table of the console 11 in the master transmission equipment 1 via a transmission equipment 2, and the call is transmitted to the terminal 8 via the transmission equipment 3. Since the allocation of the logical number of each terminal is not regulated by a transmission equipment number by providing such correspondent table, the allocation of the number can be performed flexibly.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a transmission device used in a distributed network system of a loop type or a bus type.

(Prior Art) FIG. 2 shows the configuration of a conventional loop network system, and FIG. 3 shows the configuration of a transmission device. In FIG. 2, 12 is a master transmission device, and 13 to 1
Reference numeral 4 denotes a local transmission device, which is installed on the transmission path 21. 15-20 are terminals accommodated in each of the transmission devices 12-14. A transmission device number is assigned to the transmission devices 12 to 14, and a physical number is assigned to each terminal 15 to 20.
Configure as shown. The physical number should be 4 digits, with the top 2
The digits are the transmission device number of the accommodated transmission device, and the upper two digits are the sequence number within the accommodated transmission device. In FIG. 3, 22 is a loop interface section, 23 is a time division multiplexing section, 24 is a call control section, 25 is a communication path control section, 26 to 28 are terminal adapters, and 29 to 31 are terminals.

Next, the above conventional operation will be explained. When a call to send information from the terminal 15 to the terminal 18 occurs, the call control unit 24 in the transmission device 13 detects the destination physical number from the information of the call generated from the terminal 15, and Based on the upper two digits of the number, it is determined to which transmission device the call is to be sent. In this case, the physical number of the terminal 18 is
As shown in Fig. 5, it is 1401, so the upper two digits 14 are the transmission equipment number, and communication is between transmission equipment, so in order to acquire a time slot, a call is sent to the master transmission equipment 12, and from there It is transmitted to the transmission device 14.

In this way, even in the conventional transmission apparatus described in Section 2, communication within and between transmission apparatuses can be performed normally by using physical numbers.

(Problems to be Solved by the Invention) However, when a network is constructed in a building or the like using the conventional transmission device described above, the transmission device must be installed on each floor of the building. First of all, when a transmission device accesses an outside line, which number is entered first depends on where the building is located. Transmission device numbers starting with such special digits cannot be set in advance at a factory during manufacturing, so there are restrictions on the numbering plan. Second, when moving a terminal installed on each floor of a building, there is a problem in that the physical number must be changed because it depends on the transmission device number.

The present invention solves these conventional problems, and aims to provide an excellent transmission device that allows communication using the same number without changing the physical number even if the terminal is moved. It is.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides one master transmission device provided on a transmission line, and a plurality of local transmission devices connected to the master transmission device. , in a distributed network system consisting of terminal devices connected to a master transmission device and housed in each transmission device, the physical sequence number of the terminal housed in one transmission device and one transmission device Enter any logical number given to each of the terminals housed in the
It consists of a maintenance console that has a correspondence table that can be changed and stored.When connecting a call, it refers to the correspondence table on the maintenance console and determines which terminal housed in which transmission equipment the call should be connected to. The composition consists of the following:

(Function) The present invention has the following effects due to the above configuration. In other words, use the terminal number of the other party with which you want to communicate as the logical number, and determine the transmission equipment number that accommodates the other terminal from the upper two digits of the physical number from the logical number/physical number correspondence table on the maintenance console. Can be done.

(Example) FIG. 1 shows the configuration of an embodiment of the present invention.

FIG. 3 shows the configuration of the transmission device. (Same as the conventional example) In FIG. 1, 1 to 3 are transmission devices, 1 is a master transmission device, 2 and 3 are local transmission devices, and -, 4 to 9 are installed on the transmission path 10. are terminals accommodated in transmission equipment 1 to 3.

Reference numeral 11 denotes a maintenance console that has input, change, and storage functions, and is connected to the master transmission device 1.

Next, the operation of the above embodiment will be explained. In the above embodiment, the maintenance console 11 stores the logical number/physical number correspondence table shown in FIG. 4, and has the function of inputting and modifying the table. When changing, the information of the correspondence table is transmitted to the master transmission device 1, and the information of the terminals accommodated in each of the transmission devices 2 and 3 is transmitted through the master transmission device 1. (For the transmission device 2 in FIG. 1, the logical number/physical number correspondence table information of each terminal 4 to 6 accommodated is transmitted from the maintenance console 11.) First, communication within the transmission device will be explained. . Transmission device 2
When a call occurs from terminal 4 to terminal 6, terminal 4 includes the logical number 326 of the other terminal 6 in the call.
3 as the destination address information, transmission device 2
The call control unit 24 within the terminal compares this call information with the correspondence table information previously transmitted from the maintenance console 11, determines that the communication is within its own transmission device, and transmits the call to the other party's terminal.

Next, communication between transmission devices will be explained. When a call to communicate from terminal 4 to terminal 8 occurs, terminal 4
Since the logical number 2101 of the destination terminal 8 is included in the call as destination address information, the call control unit 24 of the transmission device 2 accommodating the terminal 4 calculates the logical number of the destination terminal from this call information. It is detected and compared with the information in the correspondence table sent from the maintenance console 11 previously. In this case, since the partner terminal 8 is accommodated in the transmission device 3, the correspondence table does not contain information about the partner terminal 8.

Therefore, the transmission device 2 determines that the communication is between transmission devices, and transmits the call to the masked transmission device 1 in order to obtain a time slot. Since the mask transmission device 1 has previously received the logical number/physical number correspondence table of the terminals accommodated in all transmission devices from the maintenance console 11, it uses this information and the physical number from the logical number 2101 of the other terminal 8. The destination transmission device number is determined from the upper two digits of this physical number, and it is determined to which transmission device the call should be sent. In this case, since the physical number of terminal 8 is 0302, the call is transmitted to transmission device 3.

As described above, the above embodiment has the advantage that by having two address indications, a physical number and a logical number, a number uniquely given to a terminal can be set as a number that does not depend on the transmission device number. Furthermore, according to the above embodiment, even if the logical number has to be changed due to movement of the terminal, etc., the setting of the logical number can be changed by modifying the logical number/physical number correspondence table on the maintenance console. This has the effect of making it unnecessary.

(Effects of the Invention) As is clear from the above examples, the present invention has the following effects.

(1) By having a correspondence table between physical numbers and logical numbers in the terminal, logical numbers, which are numbers assigned to each terminal, can be set without being restricted by the transmission equipment number, allowing flexible number assignment. Can be done.

(2) When changing the accommodation destination from the transmission device where the terminal is currently housed to another transmission device, the logical number had to be changed in the past, but the physical number/logical number correspondence table can be used on the maintenance console. By changing the physical number corresponding to the current logical number inside, the current logical number can be used, and this can be realized without adding much processing to the conventional example.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a loop network system according to an embodiment of the present invention, FIG. 2 is a block diagram of a conventional loop network system, FIG. 3 is a schematic block diagram of a transmission device, and FIG. 4 is a block diagram of a conventional loop network system. FIG. 5 is an explanatory diagram of a correspondence table between physical numbers and logical numbers. FIG. 5 shows an explanatory diagram of a transmission device number and a physical number in a conventional example. 1-3, 12-14...Transmission device, 4-9°15-2
0...Terminal, 10.21...Transmission line, 11...Maintenance console, 22...Loop interface section,
23... Time division multiplexing section, 24... Call control section, 25.
...Call path control unit, 26-28...Terminal adapter, 2
9-31...Terminal. Patent applicant: Matsushita Electric Industrial Co., Ltd. Figure 1 11
Transmission bag 1 Figure 2 F1 F 3 Shiζ Section 4

Claims (1)

[Claims] one master transmission device provided on the transmission line;
In a distributed network system consisting of a plurality of local transmission devices connected to the master transmission device and terminal devices connected to the master transmission device and housed in each transmission device, It consists of a maintenance console that has a correspondence table that can input, change, and store the physical sequence numbers of the terminals housed within one transmission device and any logical numbers given to each of the terminals housed within one transmission device. A distributed network system characterized in that when making a connection, the correspondence table on the maintenance console is referred to and it is determined to which terminal housed in the transmission device the call should be connected.