Multiplex communications – Diagnostic testing – Loopback
Patent
1995-04-20
1998-09-29
Nguyen, Chau
Multiplex communications
Diagnostic testing
Loopback
370475, 370420, H04Q 900
Patent
active
058154957
ABSTRACT:
To efficiently diagnose local and remote adapters without using dedicated hardware in a communication network to which a plurality of terminals are connected through associated adapters, a local logical address which is different from logical addresses reserved for communication between the terminals, is assigned to communication with a local adapter, and a frame including the local logical address and a diagnostic command is transmitted to the local adapter. When a remote adapter is to be diagnosed, a frame including a logical address assigned to communication with a remote terminal associated with that remote adapter, a diagnostic command, and at least one invalid character, is sent out from the local adapter to the network.
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patent: 5251207 (1993-10-01), Abensour et al.
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patent: 5515418 (1996-05-01), Yamaguchi et al.
IBM Technical Disclosure Bulletin, vol. 24, No. 11B, Apr. 1982, pp. 6088-6089.
IBM Technical Disclosure Bulletin, vol. 32, No. 3 A, Aug. 1989 pp. 295-299.
Aoki Naotaka
Saitoh, deceased Youichi
Sy Kian-Bon K.
International Business Machines - Corporation
Nguyen Chau
Woods Gerald R.
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