05898674 is referenced by 65 patents and cites 4 patents.

A system and method are provided for providing non-disruptive diagnostics between a first device and a second device in communication through a virtual circuit of a frame relay network. In accordance with one aspect of the invention, the method defines a diagnostic channel by assigning it a unique channel address, transmits a test command from the first device to the second device across the unique channel address, monitors the unique channel address for a response to the test command, and then evaluates the response to determine whether it reflects a fault in the virtual circuit. In accordance with one embodiment, the test command could be a pattern message, a connectivity request, a start send pattern command, a start loopback command, a start monitor pattern command, and a start send pattern command. As will be appreciated by those skilled in the art, a number of differing test commands, patterns, and sequences could be employed, consistent with the concepts and teachings of the present invention, which provides for such testing to be conducted over a dedicated logical channel and, therefore, non-disruptively of the other data and channels multiplexed in the single virtual circuit.

Title
System and method for performing non-disruptive diagnostics through a frame relay circuit
Application Number
557873
Publication Number
5898674
Application Date
July 7, 1997
Publication Date
April 27, 1999
Inventor
Richard A Mundwiler
Safety Harbor
FL, US
Ted N Mawhinney
Clearwater
FL, US
Agent
Thomas Kayden Horstemeyer & Risley
Assignee
Paradyne Corporation
FL, US
IPC
H04B 3/46
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