ZCorum provides diagnostic tools to help cable companies reduce costs and improve network performance. Their flagship product TruVizion uses DOCSIS data to identify network impairments, affected modems, and likely causes. It helps technicians improve broadband and increase customer satisfaction. ZCorum also offers tools for spectrum analysis, proactive maintenance, and remote testing to locate issues without truck rolls. Customers report lower maintenance costs, fewer outages and complaints using ZCorum's proactive network diagnostics.

1. Established in 1996 No Venture Capital
Privately Held Three Georgia Offices
Mission: Helping telecommunications companies reduce costs,
increase efficiency and improve the subscriber experience.
About ZCorum

2. Unlike some diagnostics applications, TruVizion isn’t
“shelf-ware”. It has a wealth of useful data and powerful
features all wrapped up in an intuitive interface.
TruVizion will help your CSRs, technicians and engineers
reduce operational costs, improve your broadband
network, and increase customer satisfaction.
Services and Diagnostics
ZCorum’s PreEqualization Analyzer is a Proactive Network
Maintenance (PNM) tool that uses DOCSIS pre-
equalization data to show you where the network
impairments are, how bad they are and which modems
are likely being affected by a common problem.

3. Services and Diagnostics
ZCorum’s Upstream Analyzer is a fully featured,
software-based spectrum analyzer that displays the
upstream spectrum from your CMTS in real time.
ZCorum's Remote Spectrum uses a DOCSIS-
standard feature in newer cable modems and set-
top boxes that allows for full spectrum capture.
That means spectrum details for all digital channels.
Bandwidth Commander puts you back in control of your
broadband network. Not only will you have a tool that
helps reduce bandwidth, especially during peak hours,
you can gain new revenue from subscribers who are
your highest bandwidth consumers.

4. ZCorum PNM and FBC Applications
Stand-alone, client-server
application that collects and
displays live spectrum as it passes
through the CPE.
DOCSIS PNM application with BI Dashboard, Detailed Pre-Eq
and RF Data, Mapping, Correlation groups and more.
Accessed from a Single User Interface
Automatically identifies downstream
spectrum issues. View historical spectrum.
Rescan CPE for current spectrum.
An optional feature that displays live and
historical return-path spectrum passing
through the CMTS.

5. Core PNM Software
Reads and analyzes pre-equalization data
Shows you where impairments are before
customers are impacted
Groups modems affected by the same
impairment
Shows devices likely being impacted in
ingress

6. What Does PEA Provide?
• Locate Upstream and Downstream Impairments
• Reduce Maintenance Costs and Outages
• Save Money, Time & Increase Customer
Satisfaction
• Harness the Power of Cable Modem Coefficients
• Know Your Upstream Frequency Response
• Determine if You Have Micro-Reflections &
Group Delay
• Know Where the Upstream Impairments
Are Located

7. Know Where to Find Impairments
PreEqualization Analyzer map with a strand map layer enabled
• DOCSIS Proactive Network Maintenance (PNM) is revolutionizing the cable industry, allowing
operators to quickly identify and locate upstream impairments in their cable plant—before
subscribers are affected.
• Results in lower maintenance costs for the cable operator and a better video, voice and data
experience for subscribers

8. Business Intelligence Dashboard
See modems and nodes to
address first, and other
summary data.

9. Business Intelligence Dashboard
Add Widgets to the
Dashboard as they
become available.
Noise Patrol provides
details about the worst
modem on the worst
node.

10. Noise Patrol Screen
Select Modems on the
worst node to view
summary and detailed
diagnostic data.

11. PreEqualization Main Detail Map
Easily see which
modems are affected
by upstream
impairments.

12. PreEqualization Main Detail Table
Details on
Modems and
Impairments.

13. Drill-in on Trouble Modems
Click to select
individual
modems.

14. Additional Trouble Modem Details
Click to get more
details on a
selected modem.

15. Modems Experiencing a Similar Issue
Select a Correlation
Group to see
modems likely
affected by the
same impairment.

16. Sources of Ingress
Intermittent
Modem Report
and Charts
show modems
likely leaking in
large amounts
of noise into the
return path.

17. Rank Channels to Tackle Problems
View your worst
channels and
map with one
click.

18. Cable Modem Installer/Birth Certificate
Cable modem Installer turns your smart
phone into an installation meter by using the
cable modem.
All downstream, upstream and Proactive
Network Maintenance metrics are tested at
installation.
A birth certificate is created at time of
installation associated with the tech, cable
modem and timestamp

19. Cable Modem Installer/Birth Certificate
The installer is given
PASS / FAIL values
based on the modem
KPI data. No modems
will pass if they don’t
meet your criteria!

20. Proactive Downstream Analysis
Automatic Detection of Downstream Impairments
• Suck-outs & Standing Waves
• Resonant Peaks & Adjacency
• Roll-off & Tilt
• Missing Channels
• FM Radio Ingress
View 30 days of Historical Spectrum
No Special Equipment or Probes Needed

21. Downstream Spectrum Analysis
See total Full
Band Capture
Devices in the
system.
Identify CM
counts by
CMTS by issue.

22. Downstream Impairments
Identify impairment
events by Individual
Modems by CMTS
Specific
Impairment
identified

23. Identified Event
Identify impairment
events by Individual
Modems by CMTS

24. Remote Downstream Spectrum
Slash capital expenditures for field test equipment
• No need for expensive meters
• Full spectrum capture for all channels (video & data)
Reduce truck-rolls and time spent in the field
• See common RF problems from any location
• See tilt, suck outs, RF notches, standing waves,
overdriven channels, resonant peaking and ingress

25. Viewing Live Spectrum Data
You can view spectrum
data from one CPE by
entering one IP
address, or you can
enter two addresses to
compare two modems
at once.
Data is color coded to the
corresponding IP address.

26. Customizing Spectrum Data Views
Horizontal Adjustment
Adjust Horizontal Units in MhZ Adjust Horizontal Center in MhZ

27. Customizing Spectrum Data Views
Adjust Vertical Units in MhZ Adjust Vertical Units in MhZ
Vertical Adjustment

28. Customizing Spectrum Data Views
Set to Live View or
change to the
Maximum or
Minimum View to
analyze data over time
Set view to Live, Maximum or Minimum

29. Set Reference Points
Tap in screen to
set reference
markers A and B

30. Values in MHz
Values in MHz
will correspond
with your
reference
markers

31. Return Path Spectrum Analysis
Displays live and historic return path spectrum on
any channel from any location
No expensive equipment, switches or cabling
needed
See ingress under the cable modem with one click
Monitor channels over time to find intermittent
noise

32. View Spectrum in Real-time
View Live
Spectrum
Directly from
the CMTS
See Ingress
Under the
Cable Modem
with one Click

33. Monitor & View Spectrum Over Time
See a Historical View
or your Return Path
Spectrum over Time.

34. Addressing Ingress in the Return Path
The Operator called the customer and asked them to tighten
the F-Connector on the back of the modem.
Before After

35. Addressing Ingress in the Return Path
The operator fixed a loose housing-to-housing connector, a loose
#500 Connector at the pole, and a loose F-Conn Behind Wall Plate.
Before After

36. Reduction of Modems in Alert State
Before After
TruVizion Map
showing SNR Alerts

37. Where’s My Truck?
Find the nearest truck with our Where’s My truck feature.
• Quickly identify closest technician to dispatch to outages.
• Use our workorder system to assign workorders.

38. PNM Results
MSOs have experienced significant decreases in Truck Roll rates
Increase in overall plant health – better QoS
Experience significant drop in customer complaints by 25%
Easily identify in house problems such as loose connectors, reverse splitters, bad wiring
First 60 days of use 50% decrease in repeat calls. ($6-$9 a call and $75 a truck roll)
Major MSO – 18 months’ experience 6400 plant faults detected, confirmed and fixed
Spikes in summer time calls decrease due to plant issues being fixed

39. Pressure Testing Bundle from Effigis
Cost-effective dual-band leakage meter and signal generator
Advanced in-home shielding integrity testing
Bluetooth connectivity to third-party devices
Audible squelch increases as you move closer to the leakage event

40. PNM Professional Certification Training
Includes:
PNM Methodology
PNM Application
PNM Applied in the Field

41. PNM Resources
For additional resources, visit ZCorum.com