The objective of this document is to present how the Full Band Spectrum capability, available in the new chipsets of DOCSIS cable modems, can provide information to diagnose and troubleshoot the TV Service in HFC Networks, and to what extent this ability can open a new outlook for operators, marked by substantial savings, significant improvements in the level of service and productivity, and the possibility of retaining their current customers and optimizing their satisfaction.
The appearance of IPv6 and its migration from IPv4 has generated considerable uncertainty on HFC networks. Device monitoring (especially cable modems) is a crucial scenario when troubleshooting. That is why we will discuss SNMPv3AccessViews.
Adaptive equalization filters located at the Cable Modem and the CMTS are the response to most linear impairments such as micro-reflections. This solution improves typical monitoring indicators such as the RxMER. Monitoring tools that only focus on degradation of such data loses an important source of proactive maintenance.
This paper introduces detailed information about this effect in order to provide a theoretical and technical background which helps understand how to interpret pre-equalization data that helps in fault localization.