Ensuring Continuity: What GSA Requires Gov Agencies to Know About POTS Line Replacement

As agencies transition from POTS to VoIP, maintaining location-aware emergency calling is paramount—especially for mission-critical lines tied to public safety, healthcare, and government operations.

Unlike traditional POTS lines, which are physically hardwired to a location, VoIP lines require intentional configuration to ensure accurate Enhanced 911 (E911) functionality. Section 5 of the GSA’s EIS POTS Replacement document underscores this challenge and the compliance requirements agencies must meet.

• Location Registration: Every VoIP endpoint must have a physical address accurately registered to ensure calls are routed correctly to public safety answering points (PSAPs).
• Kari’s Law Compliance: VoIP systems must support direct 911 dialing without dialing a prefix (e.g., no “9” needed for an outside line), and send notifications to a designated location when a 911 call is placed.
• RAY BAUM’s Act Requirements: Agencies must provide a “dispatchable location” with every 911 call—meaning not just a street address, but also floor, suite, or room number where applicable.

Inaccurate or non-compliant E911 configurations could delay emergency response, create safety risks, and put agencies at legal risk. This is particularly critical for:

• K–12 schools and higher education campuses
• Government buildings with shared or complex layouts
• Healthcare, public housing, and corrections facilities

Government customers seeking to transition away from POTS lines need a rubric to grade potential solutions against. Section 6 outlines specific features that public sector agencies need to seek when evaluating a solution.

Many government systems—such as fax machines, fire alarms, and elevator phones—were built for analog infrastructure. Rather than requiring immediate, costly replacement of this equipment, agencies can use Analog Terminal Adapters (ATAs) to bridge analog endpoints with IP networks. This approach extends the life of legacy systems while enabling compliance with FCC mandates to sunset analog POTS lines.

Unlike POTS, which provided central-office-powered dial tone even during outages, VoIP relies on local power. For government agencies with public safety or national security roles, uninterrupted power is essential. Section 6 emphasizes the need for diverse power solutions—such as battery backups, uninterruptible power supplies (UPS), and generators—to maintain service during grid failures or emergencies.

VoIP service requires a robust, redundant connection to the public switched telephone network (PSTN). For high-availability government use cases, transport diversity—using both wired and wireless paths (e.g., fiber Ethernet and LTE, or even SATCOM)—adds critical layers of failover protection. Agencies should consider deploying SD-WAN solutions to manage and optimize these multiple paths dynamically, maintaining uptime for voice services in all conditions.

In times of national emergency or disaster, government entities must maintain reliable communications. The document recommends enrolling in CISA-managed priority services, including:

• Government Emergency Telecommunications Service (GETS) – Priority landline calling
• Wireless Priority Service (WPS) – Priority calling on mobile networks
• Telecommunications Service Priority (TSP) – Fast-tracked provisioning and restoration of critical circuits

These programs offer guaranteed call completion and restoration even during congestion or disaster scenarios—essential safeguards for continuity of operations.

The sunsetting of POTS is not optional—it’s federally mandated. For government organizations, this means more than just swapping out phone lines. It means:

• Maintaining compliance with FCC regulations, including Kari’s Law and RAY BAUM’s Act
• Preserving life-safety and mission-critical functions across facilities
• Ensuring uninterrupted service during power outages, cyber incidents, and natural disasters

Section 6 of the EIS POTS Replacement guidance provides a roadmap for deploying modern, reliable voice solutions tailored for the government’s unique security, resilience, and regulatory needs.

By proactively addressing these recommendations, agencies can future-proof their voice infrastructure—while upholding the trust and safety of the public they serve.

To support government agencies through the POTS transition, RCN has developed a step-by-step compliance guide that maps our POTS Link solution directly to each of GSA’s key recommendations in Section 6 of the EIS POTS Replacement framework.

This guide clearly outlines:

• ✅ How POTS Link integrates ATAs to support legacy analog equipment
• ✅ How we ensure diverse power and backup options to maintain uptime during outages
• ✅ How our solution delivers transport redundancy with wired, wireless, and satellite backup capabilities
• ✅ How POTS Link aligns with CISA’s priority service programs including GETS, WPS, and TSP
• ✅ How POTS Link complies with Advanced E911 requirements such as Kari’s Law & the Ray Baum Act
• ✅ Real-world examples from agency deployments

Whether you’re modernizing fire panels, elevator lines, emergency communication systems, or simple fax and telephony applications, our guide provides actionable steps to ensure a smooth, compliant, and secure migration.

📥 Download the full POTS Link Compliance Guide now and take the guesswork out of your transition:

RCN Technologies partners with over 1,100 unique government agencies across local, state, education, and federal sectors. We specialize in delivering turnkey wireless connectivity where wired options fall short — and we have the public sector procurement experience to help you find an approved purchasing path fast.