Cross-connecting system for making line connections between high

Details Cross-connecting system for making line connections between high Cross-connecting system for making line connections between high

1994-09-02

1996-10-01

Beausoliel, Jr., Robert W.

Excavating

371 201, G06F 1100, H04L 120

Patent

active

055617662

ABSTRACT:
There is provided a cross-connecting system capable of automatically detecting a connection error and a position where the connection error has occurred. The cross-connecting system has a cross-connecting apparatus which makes connection between a high-speed line and a low-speed line or between two high-speed lines so as to transfer a main signal therethrough. A line-connection information adding unit is provided for adding line-connection information to an overhead of the main signal. A line-connection information detecting unit is provided for detecting the line-connection information. A determining unit provides the line-connection information to the line-connection information adding unit, and determines a presence of a connection error along a line through which the main signal is transferred in accordance with the line-connection information received from a remote cross-connecting system. The line-connection information comprises type information, apparatus identification information and line identification information. The type information being set as either one of request information and response information. The apparatus identification information represents an apparatus identification of the cross-connecting apparatus provided in the designated remote cross-connecting system or a cross-connecting system in which an erroneous connection has been made. The line identification information represents a line identification of the low-speed line connected to the designated remote cross-connecting system or a line identification of the high-speed line of a cross-connecting system in which an erroneous connection has been made.

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Dhar et al., Network Interconnection and Protocol Conversion--A Protocol Complementation Approach, IEEE Region 10 Conference, Nov. 1992.
Serre, et al., Implementing OSI-Based Interfaces for Network Management, IEEE Communications Magazine, May 1993, p. 76.
Udo W. Pooch et al., Telecommunications and Networking, CRC Press, 1991, at pp. 47-51.

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