The Case For DOCSIS PNM
DOCSIS Proactive Network Maintenance (PNM)
What Is PNM All About?
DOCSIS Proactive Network Maintenance (PNM) is a relatively well known DOCSIS feature, based and built on DOCSIS pre-equalization. Pre-equaliztion is a feature available to DOCSIS cable modems invented with DOCSIS 1.1 standard and improved with DOCSIS 2.0 and DOCSIS 3.1. This feature set is based on equalizer taps available in the cable modem. Equalizer taps do delay RF frequencies. Each unit of delay is called a tap.
PNM is a proactive approach to cable operator plant maintenance
PNM uses cable modems and CMTS as test probes
PNM locates up- and downstrream impairments
In an ideal scenario PNM identifies impairments before they impact the customer
How Does PNM Work?
Frequent and continuous data collection from CMTS and modems via SNMP
Frequent monitoring of modems in target
Analysis of distortion signatures
Issue evaluation and classification
Calculations of distances to reflection points
Plot modems on a map — visual representations of known issues.
The Advantage Of DOCSIS PNM?
PNM lowers maintenance costs by first identifying the presence of RF impairments but also determine if the impairment is in-home or outside plant. It associates MAC addresses with the affected cable modems and identifies them on a business its geo-location. Now technicians can be directed to the impairment location for troubleshooting. In general cable operators improve the quality of experience for the subscriber by ensuring quality of service offering. Cable operators can also catch intermittent issues by monitoring their systems without the expense of an expensive test hardware platform.
Reduced truck rolls
Reduced support calls
Reduced modem replacements
Our DOCSIS PNM Based Products
All Axiros products can be deployed and operated “On-Premises” or “as a Service”.
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