Modem Technology vs. HFC Ingress Noise

The subject of ingress on the coaxial transport (either accidental or intentional) is of the largest concern when considering the transportation of telephony services on a Hybrid Fiber Coax (HFC) system. With a well-maintained coax plant that is continually checked for compliance with FCC standards for cumulative leakage index, return path ingress should not present a problem. However, it must be assumed that no system is impervious to strong RF fields that are in close proximity to the telephony equipment. The most common weak points through which ingress enters the system are the customer drop, and faulty "F" connectors on the drop cable. Therefore, measures must be taken to ensure that there...