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Modernizing Network Monitoring: A Client's Transition from Legacy Systems to Future-Ready Solutions

By Andrew Erickson

February 14, 2025

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Any organization with critical infrastructure faces an ongoing challenge: how do you keep up with evolving technology without disrupting your existing operations? And how do you do all of that without destroying your budget in the process?

Recently, a long-time client reached out for help with these challenges. They had made a partial jump from legacy DOS-based monitoring screens to a T/Mon MINI master station in 2023. However, their evolving microwave and radio systems demanded even more modern integration.

Their journey exemplifies the balancing act that many network operators face when blending legacy equipment with next-generation RTUs and monitoring platforms like T/Mon.

Here's how DPS helped them navigate protocol integration, step-by-step RTU upgrades, and a shift toward a fully modernized monitoring ecosystem. By reviewing this client's successful path to a solution, we'll touch on how these lessons can help you tackle similar challenges in your own network.

Legacy equipment in a network
Simplify legacy integration with features that make your job easier

Navigating the Leap from DOS to Modern Monitoring

For years, this client relied on outdated DOS-based T/Mon screens, even though newer options had been available for over 10 years. Although their 2023 upgrade to a T/Mon MINI G3 introduced a more intuitive interface, some lingering integration issues meant they had to juggle multiple interfaces for configuration.

Managing multiple interfaces isn't an uncommon problem when you make a partial transition from old to new. It can feel like you're trying to merge two parallel universes - one stuck in DOS, the other living on the modern web.

With fresh expansions on the horizon (including a brand-new Harris P25 radio network and MNI's Proteus MX microwave equipment), they knew the time had come to build a fully integrated monitoring strategy.

Integrating New Microwave and Radio Systems into T/Mon

The client's new microwave and radio projects created a pressing question: Would they be able to gather detailed alarms via T/Mon (using the native protocols of the microwave and radio gear) - or would they have to fall back on simple dry contact closures?

They were also considering a three-site expansion that would require new RTUs. Should they continue using older models of DPS RTUs or upgrade everything to the newer G6 series?

A big piece of the puzzle was confirming whether DPS already supported SNMP for MNI's Proteus MX and if the Harris P25 system would require custom development. Protocol support wasn't just a checklist item here. It was the key to getting rich alarm data (instead of a handful of binary on/off alerts) for better troubleshooting.

Multiple Interfaces Create Training Headaches

As this client added new sites, they worried about having to train staff on multiple RTU web interfaces - some older, some newer.

Having one set of procedures for legacy equipment and a different set for new equipment increases the chance of mistakes (and frustration).

Protocol Integration Improves Alarm Visibility

One of the biggest topics we discussed with this client was how to move beyond basic on/off alarms for their new MNI Proteus MX microwave platform and Harris P25 radio system.

When you rely on dry contact closures, you lose the detailed alarm data that modern protocols provide. Instead of a non-specific "something's wrong" alert, SNMP can deliver details like performance thresholds and fault codes. It can even provide contextual information about what's happening on the device.

With T/Mon's protocol mediation, it becomes possible to integrate SNMP alarms from Proteus MX directly into a centralized monitoring system. That means:

  • Richer alarm data for deeper insights.
  • Faster troubleshooting that reduces downtime.
  • Fewer site visits because you can diagnose issues remotely.

And if (or when) additional protocol development is required for the Harris P25 system, DPS is ready to create a custom device module - just as we've done for hundreds of other client-specific needs.

Balance Legacy and Modern RTUs in a Phased Upgrade

Another concern the client raised was the logistics of adding new RTUs without disrupting their existing network. Their current NetGuardian 864 units have served them well for years. So how do you add G6 RTUs for new sites - without forcing a rip-and-replace on older sites?

Fortunately, T/Mon is designed to simultaneously handle different generations of DPS RTUs. You can deploy G6 RTUs in your new locations while running older devices at your established sites.

Since T/Mon supports both older and newer generations of RTUs, you don't have to do a full cutover all at once. This way, you maintain visibility across your whole network, and you can manage your upgrades on a more comfortable timetable.

Plan Out a Fully Integrated Monitoring Ecosystem

The client's end goal - and maybe yours - is a monitoring setup that is fully integrated and works intuitively:

  1. Native protocol integration for Proteus MX and Harris P25 (where possible)
  2. Streamlined configuration with a modern RTU interface
  3. An upgrade path that leverages existing T/Mon infrastructure as the central hub
  4. Phased deployment that avoids downtime and major spikes in capital expenditure (CapEx) budget.

In short, they wanted to protect their existing investments while stepping confidently into the future.

NetGuardian Web Interface
A singular web interface will allow you to stay organized and view alarms in one central location

G6 NetGuardians are a Solid Upgrade Choice

The NetGuardian 864A G6 takes the core functions that have existed in the NetGuardian line for 20+ years and adds important modern functions:

  • Simplified Web Interface
    Configuration is much more straightforward, and monitoring happens within a split-second (rather than requiring a page refresh).
  • Built-In TLS 1.2 Support
    Cybersecurity compliance continues to get stricter. It's nice having an RTU that can handle encrypted connections.
  • Expanded Protocol Support
    The G6 can act as a small-scale SNMP or Modbus master, so you're not limited to collecting only contact closures.
  • Pin-Compatible for Easy Swaps
    Because the connectors match earlier NetGuardian models, you can minimize rewiring - and get up and running faster - as you upgrade.

If you're serious about preparing your network for the future while keeping installation overhead low, the NetGuardian 864 G6 offers a high-performing and cost-effective solution.

T/Mon is a Good Fit for a Variety of Third-Party SNMP Gear

DPS has a long track record of building custom device modules that solve real-world protocol challenges.

  • Proven Proteus MX Integration
    T/Mon already supports this microwave platform, so you can ditch those dry contacts for richer SNMP alarm data.
  • Harris Radio Integrations
    DPS has integrated with Harris equipment for years. Specific Harris P25 support might require new module development, but that's something DPS does routinely. Even if you only need a handful of units, DPS can justify that engineering effort.
  • Easy G6 Upgrades
    Whether you deploy G6 RTUs immediately or phase them in over time, T/Mon can manage them all. You don't need to scramble and replace every single RTU at once.

Plan for Future Network Expansion

The client's three-site project is only the beginning. As they continue to scale, they need a monitoring setup that can evolve with them. T/Mon can handle thousands of alarms if needed, and the G6 RTUs offer flexible I/O that can adapt to each new site's distinct configuration.

Investing in a scalable solution now means you're laying down a solid foundation for reliability well into the future.

Next Steps: Getting the Right Equipment in Place

After speaking with DPS, the client received a tailored proposal that mapped out:

  • Supported alarm points for both Proteus MX and Harris systems.
  • NetGuardian 864 G6 upgrade path (with trade-in discounts to smooth the transition).
  • Phased deployment timeline to make sure each new site is successfully integrated.

Armed with this info, they can make an informed decision - without worrying that they'll be boxed into a corner in a year or two.

Key Takeaways for Other Network Operators

If you're looking to modernize without leaving behind the gear that still works, here's what you should remember:

  • Protocol integration is vital for turning basic alarms into actionable intelligence.
  • Phased upgrades minimize downtime and let you spread out costs.
  • Custom development from a proven manufacturer can keep your monitoring system in sync with your rapidly changing network.
  • Think about the future. Focus on RTUs and a central master that can scale as your network expands.

With DPS Telecom's combination of custom protocol support, backward compatibility, and top-tier product development, you get a partner who won't force you to choose between old and new. You can have it all.

How Can DPS Help You?

Are you stuck with old alarm equipment or bracing for a major network expansion? Let's figure out the best path forward together.

Give us a call at 559-454-1600 or shoot us an email at sales@dpstele.com. We'll get you a detailed proposal that outlines the exact hardware, software, and protocol support you need for a smooth transition.

I can't wait to hear about your project - and help you build a network monitoring strategy that can handle anything you throw at it.

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Andrew Erickson

Andrew Erickson

Andrew Erickson is an Application Engineer at DPS Telecom, a manufacturer of semi-custom remote alarm monitoring systems based in Fresno, California. Andrew brings more than 18 years of experience building site monitoring solutions, developing intuitive user interfaces and documentation, and opt...