Compatibility Issues in Block Conversion for Return Path Concentration (2000)

By James O. Farmer, Mark A. Linford, ANTEC Corporation

A few months ago we received reports of problems using block conversion with DOCSIS modems. We attempted to duplicate the problems in the lab, but were unable to do so. We are not able to show reasons for the failures, but we are able to discuss possible sources of the problem. Our tests indicate good safety margins with the equipment we used. Block diagrams of practical laboratory tests are shown, which can help identify any possible problems before system deployment.

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