Patent Number: 6,480,531

Title: Method and apparatus of testing modems in a networking environment

Abstract: A method and apparatus for use in a digital system having a plurality of modem devices from receiving de-multiplexed digital channels of information through a transmission link and providing data for use by computer equipment for detecting the presence of defective modem devices, the plurality of modem devices being organized into groups having a predetermined number of modem devices, testing each of the modems in each group against the remainder of the modems in that group, determining the number of tests that each of the modems within the group have passed successfully, selecting among the modems within each group, a `leader` modem having the highest number of pass rate and thereafter testing the remainder of the modems in that group against the chosen `leader` modem thereby reliably isolating defective modems from use during normal operation of the digital system.

Inventors: Malhotra; Pankaj (Sunnyvale, CA)

Assignee: Cisco Technology, Inc.

International Classification: H04L 12/26 (20060101); H04B 001/38 ()

Expiration Date: 11/12/2019