ERCES Commissioning: Verifying System Performance and Compliance

Commissioning is a critical phase in the Emergency Responder Communication Enhancement System (ERCES) process. It ensures that the installed system meets all regulatory requirements, functions as intended, and provides reliable communication for first responders during emergencies. This phase not only validates the system’s performance but also secures the necessary approvals from the Authority Having Jurisdiction (AHJ).

In this guide, we’ll explore the commissioning process, its importance, and best practices to ensure a successful outcome.

What is ERCES Commissioning?

ERCES commissioning involves comprehensive testing and inspection to confirm that the system complies with national and local codes, such as IFC 510, NFPA 72, and NFPA 1221. This process validates that the system:

  • Provides adequate signal coverage throughout the building.
  • Functions correctly under various conditions.
  • Meets the performance standards set during the design and planning phase.


Commissioning is required for final system certification and is often necessary for building occupancy permits.

Why Commissioning is Critical

A properly commissioned ERCES system ensures:

  • Reliable Emergency Communication: Verifies that first responders have clear and consistent communication in all critical areas.
  • Regulatory Compliance: Confirms adherence to codes and standards, avoiding fines, delays, or retrofitting costs.
  • System Optimization: Identifies and resolves performance issues before the system is fully operational.
  • Building Occupancy Approval: AHJs often require successful commissioning before issuing occupancy permits.

Steps in the ERCES Commissioning Process

1. Pre-Commissioning Inspections

Before the actual commissioning begins, technicians conduct a thorough pre-inspection to ensure all components are properly installed and functional. This includes:

  • Verifying the placement of Bi-Directional Amplifiers (BDAs), Distributed Antenna Systems (DAS), and donor antennas.
  • Checking fire-rated enclosures and cable pathways for survivability.
  • Ensuring integration with fire alarms, annunciator panels, and other safety systems.

2. Functional Testing

Functional testing evaluates the performance of each system component to ensure everything operates as intended. Key tests include:

  • Signal Strength Testing: Measuring inbound and outbound signal strength throughout the building. Critical areas require 99% coverage, while general areas require 90%.
  • Power System Testing: Verifying that backup power supplies, such as batteries or generators, provide uninterrupted power for at least 24 hours.
  • Interference Testing: Ensuring that the system operates without interference from other communication networks, such as cellular or Wi-Fi.

3. Compliance Verification

Compliance testing confirms that the system meets all applicable codes and standards. This involves:

  • Comparing test results to the requirements outlined in IFC 510 and NFPA 1221.
  • Ensuring that all equipment is certified under UL 2524.
  • Documenting system performance and compliance for AHJ review.

4. AHJ Review and Approval

The commissioning process concludes with an inspection by the AHJ. During this review, the AHJ verifies that the system meets local regulations and functions as required. Key elements of the review include:

  • Inspecting system components for proper installation.
  • Reviewing testing documentation and performance reports.
  • Conducting final signal strength and functionality tests.


Upon approval, the AHJ provides certification, allowing the building to move forward with occupancy or operation.

5. Documentation and Handover

After commissioning, detailed documentation is handed over to the building owner or facility manager. This includes:

  • System design and installation records.
  • Test results and performance data.
  • Maintenance schedules and instructions.


Comprehensive documentation ensures that the system can be maintained effectively over its lifespan.

Challenges in ERCES Commissioning

Complex Building Layouts

Large or irregularly shaped buildings may require additional testing and adjustments to achieve adequate signal coverage.

Regulatory Variability

Different jurisdictions may have unique requirements, making it essential to collaborate closely with the AHJ throughout the process.

Environmental Factors

External interference, such as nearby construction or weather conditions, can affect signal strength during testing.

Best Practices for ERCES Commissioning

  • Engage Certified Professionals: Ensure technicians are experienced in ERCES installation and commissioning.
  • Plan for Retesting: Allow time in the project schedule for additional testing or adjustments if initial results are unsatisfactory.
  • Communicate with the AHJ: Maintain an open dialogue with the AHJ to address concerns and streamline the approval process.
  • Use Quality Equipment: Certified components (e.g., UL 2524) are more likely to pass performance tests and meet compliance standards.
  • Document Everything: Keep thorough records of testing, compliance, and system configuration for future reference.

How Commissioning Fits Into the ERCES Process

Commissioning bridges the gap between installation and operation, ensuring that the system is fully functional and compliant. It sets the stage for ongoing maintenance and monitoring, which keeps the system reliable over time.

The Next Step: Maintenance

Once the system has been successfully commissioned, the focus shifts to long-term maintenance to ensure continued performance and compliance. Learn more about this phase in our guide:


Commissioning is the final validation of your ERCES system, ensuring it’s ready to provide lifesaving communication during emergencies. By following best practices and working with qualified professionals, you can achieve a system that meets the highest standards of safety and reliability.