JPS62100059A - Cascade system loop transmission line connecting system - Google Patents

Abstract

PURPOSE:To select the economical channel and to supply unifiedly the network related information to the connecting device by constituting the loop transmission line for its own network and the loop transmission line for other network independently and in the cascade system and connecting them. CONSTITUTION:The incoming destination data terminal number in a data terminal network 10 is sent from a data terminal 4 through a loop transmission line 3 for its own network to a connecting device 2. In the device 2, the network to be connected by the optimum connecting information concerning other network of the latest edition in such a time point is selected. For example, when an integrated network 9 is selected, the data from the data terminal 4 are sent through the loop transmission line 3 for its own network, the connecting device 2, a loop transmission line 1 for other network and the integrated network 9 to the incoming destination data terminal in the data terminal network 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to public telecommunications, and more particularly to digital switching systems having loop transmission paths.

[Conventional technology]

Conventionally, as shown in FIG. 2, a digital switching system having a loop transmission line of this type has a plurality of data terminals 4, 5.6 and another telephone network 7.6 on one loop transmission line 20.
Data network 8. This was a system in which an integrated network 9 and the like were connected, and a data terminal network 10 was further connected to these other networks.

[Problem that the invention seeks to solve]

In the conventional system described above, the data terminals 4.5.6 connected to the loop transmission path 20 and the data terminal network 10
When communicating with the data terminals 11, 12, 13 connected to the data terminals 4, 5, 6, the data terminals 4, 5, 6 autonomously designated the network to be passed through.

However, in order to respond to the complex changes from independent networks such as telephone network 7 and data network 8 to integrated network 9 from time to time,
Modifying a large number of data terminals has the drawback of requiring a great deal of time and effort.

The object of the present invention is to provide a stepped loop transmission line connection system that does not have the above-mentioned drawbacks.

[Means for solving problems]

The stepped loop transmission line connection method of the present invention includes a first loop transmission line for transmitting and receiving data between a plurality of data terminals;
A second loop transmission line that sends and receives data to and from multiple other networks, and is located between the first and second loop transmission lines, and is optimal for connecting these loop transmission lines to the final destination data terminal. and a connection device that has a selection function for connecting via other networks.

〔Example〕

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

FIG. 1 is a block diagram of one embodiment of the present invention.

The data terminals 4, 5, and 6 are terminal devices that transmit and receive information data including voice data, and are connected to the loop transmission line 3 for the own network. The loop transmission line 3 for the own network is connected to the loop transmission line 1 for other networks via the connection device 2, and the loop transmission line for other networks includes other networks, such as a telephone network 7, a data network 8, an integrated network 9, etc. is connected.

These other networks are further connected to a data terminal network 10, and data terminals 11, 12 and 13 are connected within this data terminal network.

The loop transmission line 3 for the own network is the data terminal 4, 5.6 mutual u1
1 connection and a data terminal 11 within the data terminal network 10.
12.13. The loop transmission line 1 for other networks is a connection line for connection to other networks, such as the telephone network 7, the data network 8, and the integrated network 9. The connection device 2 connects the loop transmission line 3 for its own network and the loop transmission line 1 for other networks, and connects the data terminals 4, 5.6 and the data terminals 11.6 in the data terminal network 10.
12.13 has the function of selecting the optimal network to be connected to. Is the best connection to another network? , Fee 1 quality using 8.9.

This is to connect to another network that is more advantageous by comparing connection responses, etc., and is centrally managed in this connection device 2.

Next, a specific sequence in the case of issuing a data call will be explained. The destination data terminal number in the data terminal network 10 is sent from the data terminal 4 to the connection device 2 via the own network loop transmission line 3. In the connection device 2, a network to be connected is selected based on the latest version of optimal connection information regarding other networks at this point in time. For example, when the integrated network 9 is selected, data from the data terminal 4 is transferred to the own network loop transmission path 3, the connection device 2. Loop transmission line for other networks 1. integrated network 9
The received data terminal is sent to the destination data terminal within the data terminal network 10 via the data terminal network 10.

In this embodiment, loop transmission lines 3 for own network and for other networks are used.
, 1 have been explained, but it is also possible to further increase the number of loop transmission lines to adopt a stepped loop connection method, or to increase the number of connection devices depending on the traffic situation. Needless to say.

〔Effect of the invention〕

As explained above, the present invention provides an economical connection route by independently configuring the loop transmission line for the own network and the loop transmission line for the other network in a stepped manner, and providing a connecting device to connect them. There are advantages such as being able to choose the network and providing network-related information centrally to the connecting device.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional system. ■ ・・・・・・・・・・・・・・・・・・ Loop transmission line 2 for other networks ・・・・・・・・・・・・・・・・・・
Connection device 3 ・・・・・・・・・・・・・・・・・・
Loop transmission line for own network 4.5.6 ・・・・・・ Data terminal 7 ・・・・・・・・・・・・・・・・・・
Telephone network 8 ・・・・・・・・・・・・・・・ Data network 9 ・・・・・・・・・・・・・・・ Integrated network 10 ・・・・・・・・・・・・・・・・・・・・・
Data terminal network 11, 12.13 ... Data terminal agent Patent attorney Yoshiyuki Iwasa Figure 1 Figure 2

Claims (1)

[Claims] (1) A first loop transmission path that transmits and receives data between multiple data terminals, a second loop transmission path that transmits and receives data to and from multiple other networks, and the first and second loop transmission paths. A stepped loop transmission line connection system that includes a connection device located between these loop transmission lines and having a function of selecting the optimum route to the final destination data terminal via another network in mutual connection of these loop transmission lines.