JP2592195Y2 - Communication processing board - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to an OSI (Open System I) which can easily cope with various networks.
The present invention relates to a communication processing board that executes a communication protocol such as all seven layers of the protocol (interconnection: open system interconnection).

[0002]

2. Description of the Related Art Networks such as a packet network, a LAN, and an ISDN need to have a communication connector of a unique shape and use a unique communication LSI. Therefore, in a communication processing board that executes a communication protocol, it is necessary to create unique hardware according to a network such as a packet network, a LAN, and an ISDN.
For this reason, conventionally, a communication processing board that executes the OSI protocol adopts a method of developing completely individual hardware for each connected network. Hereinafter, a case where all seven protocols of the OSI are executed will be described as an example.

[0003]

In the 7th layer of OSI, the transport layer of the fourth layer provides a transport service independent of the lower network to the upper layer. The protocol does not depend on the connected network. Therefore, as before,
When developing a communication processing board that executes all seven layers of OSI protocols by using a method of developing completely separate hardware depending on the network, protocol processing of an upper layer above the OSI session layer is required. In spite of the fact that is common, it is necessary to develop a mechanism for handling the protocols of all seven layers of OSI for each individual network. This not only introduces overhead in the implementation of the communication processing board, but also realizes the functions of the same session layer or higher when purchasing a communication processing board corresponding to another network for the user of the communication processing board This incurs the inconvenience of having to purchase the parts that do.

SUMMARY OF THE INVENTION An object of the present invention is to provide a communication processing board which can solve such a problem and can economically configure a function of executing a protocol for one of a plurality of types of networks. It is in.

[0005]

To achieve this object, a communication processing board of the present invention executes a protocol for one of a plurality of types of networks. A network-dependent module having a functional circuit that executes a protocol that depends on the one of the networks, and a network-independent module that has a functional circuit that executes a common protocol that does not depend on the plurality of types of networks. , said network dependent module is provided a communication connector for connecting said one of said plurality of types of networks, the network independent module is provided apparatus connector for connection to the processor, the network dependent module And the network independent module phase During is configured to be interconnected through a universal inter-module connectors releasably interconnect interface circuit.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. In the present invention, a communication processing board for executing all seven OSI protocols is shown in FIG.
The network independent module 1 shown in FIG.
It is composed of the network dependent module 10 shown in FIG. That is, in the present invention, the communication processing board for executing the protocols of all the seven layers of OSI is composed of the network independent module 1 and the network dependent module 10, and all the hardware dependent on the target network is network dependent. In the network-dependent module 10, the inter-module connectors 19 and 20 for connecting with the network independent module 1 and the network independent module interface circuit 12 are mounted on the module 10.
Make it independent of the network. As a result, even when the target network changes, only the network-dependent module 10 corresponding to the network is created and interconnected with the same network independent module 1, and the protocol of all the seven layers of OSI for the network is used. Can be realized.

In this embodiment, the network independent module 1 includes a 32-bit CPU 6, a RAM 4, a ROM 5, and a ROM 5 for performing high-speed OSI protocol processing.
A host interface circuit 2 for controlling the exchange of data with a host computer as a processing device to which the communication processing board 1 is connected via the device connector 1b, a dual port memory 3 for the host interface, etc.
Will be installed. All of these hardware do not depend on the network to which the communication processing board 1 is connected.
Further, the network independent module 1 is configured as shown in FIG.
Has a network dependent module 10 and a network dependent module interface circuit 7 for connection.

On the other hand, the network-dependent module 10 shown in FIG. 1B is assumed to be intended for a packet network in this embodiment. The controller 15, the line control circuit 16, and a communication connector V.V. 24 / V. 2
8 connector 17 or V.8. 10 / V. 11 connector 18
And so on. The network dependent module 10 also
It has a CPU 11, a RAM 13, a ROM 14, and the like as needed.

Further, the network-dependent module 10
Is a network independent module 1, inter-module connectors 19 and 20, and a network independent module.
They are removably interconnected via an interface circuit 12. Therefore, in the network-dependent module 10, the connectors 19 and 20 and the network-independent module interface circuit 12 are the same even if the target network is changed.

In the above, the case where all seven layers of the OSI protocol are executed has been described as an example. However, if one of a plurality of types of networks is executed, other protocols may be executed. Applicable.

[0011]

As described above in detail, according to the present invention, even when a communication processing board for executing all seven layers of OSI protocols corresponding to another network is developed, the communication processing board corresponding to the network can be used. Since only the network-dependent module 10 needs to be created and connected to the same network independent module 1, the economical effect on both the providing side and the receiving side of the communication processing board is extremely large.

[Brief description of the drawings]

FIG. 1A is a schematic plan view showing an example of a network independent module used in the present invention, and FIG. 1B is a schematic plan view showing an example of a network dependent module used in the present invention.
It is.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Network independent module 1b Device connector 2 Host interface circuit 3 Dual interface memory for host interface 4 RAM 5 ROM 6 32 bit CPU 7 Network dependent module interface circuit 8, 9 Inter-module connector 10 Network dependent module 11 16 bit CPU 12 Network independent module / interface circuit 13 RAM 14 ROM 15 LAPB controller 16 Line control circuit 17, 18 Communication connector 19, 20 Connector between modules

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04L 29/00 H04L 29/12

Claims (1)

(57) [Scope of request for utility model registration] 1. A communication processing board for executing a protocol for one of a plurality of types of networks , a network-dependent module having a functional circuit for executing a protocol dependent on the one of the plurality of types of networks. When, a network independent modules with functional circuitry for performing a common protocol that is independent of the plurality of types of networks, the network dependent module is a communication connector for connecting said one of said plurality of types of networks The network independent module is provided with a device connector for connecting to a processing device. The network dependent module and the network independent module are connected to each other via an interconnection interface circuit and a detachable module connector. Configured communication processing board to be interconnected.