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  • Proven

    Experienced engineers, top-quality work

  • Focused

    Key markets, regulatory expertise

  • Solutions

    Fully customizable, knowledgeable pros

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When there’s no room for doubt, you need an expert. At National Network Services (NNSI), we design, engineer, install and maintain a wide range of essential systems that include DC Power, industrial emergency generators and low voltage network cabling solutions. Our team of pros brings decades of engineering experience and is tapped into the pulse of the ever-changing industry. Specializing in the healthcare, education, commercial real estate, transportation and communications industries, we believe in being on time and on budget and demand the highest quality. When your network absolutely needs to work, there’s no better go-to.

Network Cabling | Network Cabling Engineering | Telecom Backup Services | Telecom DC Power PlantElectronic Security Services


When you focus on key markets, you get to know them inside and out. At NNSI, our engineers and project managers have extensive knowledge of our customers’ business operations as well as code and regulatory requirements in their markets. Our experienced team understands that business interruptions can be not only costly, but also jeopardize compliance. We use our know-how to help you always stay one step ahead.

Healthcare • Telecom • Data Centers • Commercial / Industrial • Education
Solutions: Network Cabling

Solutions: Network Cabling

Structured cabling is the foundation of any communications network– that’s why you need pros working for you. Our team of engineers and project managers has extensive experience in designing, installing and managing comprehensive and customized network cabling solutions to meet a wide variety of needs and requirements. At National Network Services Safety is a way of life.  Our companies best practices and safety awareness programs have resulted in one of the best EMR (experience modification rating) less than .9 in our  industry and we document our installation standards for workmanship. Our capabilities include:

Fiber Optics • CAT5e • CAT6 • CAT6a • Copper • DAS systems • Paging • Audio Visual Integrated IP based Security Systems • CATV

South Pole case study

Solutions: Network Cabling Engineering Services

AT NNSI, we don’t just say our engineering services team has the knowledge they need; we have the certifications to back us up. Our technical team has the highest certifications in the industry to design, install and project manage the most complicated network cabling projects. These in-house certifications include: BICSI – RCDD, DCDC; BICSI/PMI – RTPM; NSCA & AUTODESK Professional 2014 (including Navisworks and Revit). We can engineer whatever the project requires including:

  • Auto Cad, Revit 3D or COEFM drawings
  • Ladder rack layouts
  • Fiber duct raceway layouts
  • White space floor utilization layouts
  • Ground (earthing) system design, bracket and cable layouts
  • CAT 6 UTP cable routing layouts
  • DS-1, DS-3 cable routing layouts
  • Single and multi-mode fiber optics layouts
  • Cable running list detailing origination and destination of network cables and DC power cables
  • Cage layouts and cabinet and rack layouts
  • Front equipment Rack/Cabinet elevation layout
Solutions: Network Cabling Engineering Services
Solutions: Telecom Back Up Services

Solutions: Telecom Back Up Services

When it comes to your back up power, there’s no room for error. At NNSI, our team of pros can handle all of your emergency back up power needs, across North America, and coordinate it through a single point of contact, saving time and money. Our engineers have worked with a variety of systems and vendors (including all major manufacturers and models of generator sets, switchgear, automatic transfer switches, UPS and 24-7 emergency service) and know what it takes to integrate and maintain them. The result is confidence that your system will be there when you need it.

Solution: Telecom DC Power Plants Engineering and Installation

NNSI can design, build and install customized solutions required for the telecommunications/co-location space. Our team understands that facilities will be benchmarked against these criteria, and brings our decades of experience to every project. Design and build elements that can be developed include:

  • Multiple power platforms
  • Multiple types of centralized and distributive power plants
  • Ferro and switch mode rectification
  • Wet Cell, VRLA and Lithium Ion batteries
  • Secondary distribution
  • Inverter/converter plants
  • Ring and tone
  • Various Monitor and Control systems for power equipment
  • Floor and Ceiling supported environment
  • DC Power plant battery back up sizing
  • Certified level lV Power installers
Solution: Telecom DC Power Plants Engineering and Installation
Solution: Electronic Security- Design and Installation

Solution: Electronic Security- Design and Installation

Security is one of today’s biggest needs, and the one that is changing the most quickly. Our team delivers turnkey solutions for electronic security using an integrated approach. Whether you need a whole new system designed from scratch or just need engineering services, our experienced professionals will use their years of hands-on experience to meet your exact requirements.

  • Access control systems
  • IP video systems
  • Intrusion systems

Our Team

Our project management teams and field technicians average over 18 years of experience in the industry. We deliver well-engineered, high-quality solutions on time and on budget. And our performance is unmatched in the markets we serve. 

Since April of 2014, National Network Services has been under new ownership. The new owners have more than 30 years of experience in integrated systems and will continue to focus on delivering the highest level of customer experience to existing and new customers while expanding the scope of our service. NNSI has recently expanded services into electronic security, AV equipment, and DAS systems.

Our Team
Connect with Us

Connect with Us

We are a single-source systems integration firm located in Denver, Colorado.

  • North, 6840 N Broadway Unit F.  Denver CO 80221

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