NGA serves California's Central and Los Angeles regions on the NEXiSCore intelligence layer and ESInet network backbone — 200 PSAPs, 20 million residents, one cloud-native NG911 platform engineered specifically for the life-saving requirements of public safety.
Encompassing the Central Valley and inland California — agricultural heartland, mountain corridors, and the I-5 spine that connects northern and southern operations. Geo-diverse data centers and SIP aggregation built in.
The most densely populated metropolitan area in California — high call volumes, multi-jurisdictional complexity, and the disaster profile of the Pacific basin. Served by a dedicated regional ESInet with full failover into the statewide platform.
Serving 20 million Californians across 200 PSAPs creates a specific set of operational demands. Here's how each one maps to a capability already running on NEXiSCore and the ESInet.
Surge capacity for wildfires, earthquakes, and atmospheric rivers without manual intervention.
Elastic scaling on AWS. Compute, memory, and bandwidth scale automatically during call surges. Optimized for natural disasters where call volume spikes.
200 PSAPs across diverse jurisdictions to interoperate without forcing a single vendor.
Multi-vendor interoperability. NENA i3 functional elements connect through defined interfaces, not proprietary dependencies. PSAP-to-PSAP and ESInet-to-ESInet linking built in.
Calls routed by validated location, not legacy ANI/ALI lookups, across thousands of jurisdictional boundaries.
ECRF + LVF + GIS. Civic addresses validated, GIS polygons resolve to the correct PSAP, PIDF-LO carries location end-to-end. Static trunk routing replaced by real-time geospatial intelligence.
Continuous service through any single component or facility failure.
Active-active across two ESInets. Real-time failover between RNSP and PNSP networks. Geographically distributed nodes with no single point of failure in the stack.
Centralized policy control to redirect calls during disasters without paging engineers at 2 a.m.
Policy Store + ESRP. Time-of-day routing, congestion failover, disaster-mode rules, and manual overrides applied dynamically. No hard-coded logic, no manual rerouting risk.
Text, video, and rich data from modern devices — not just voice — supported at scale.
Multimedia call intake over SIP. Voice, RTT, SMS, video, IoT, and additional data objects ingested through a unified call-handling pipeline.
CJIS, FedRAMP, and sovereign-grade compliance across the platform.
Defense in depth. Palo Alto NGFW, AWS GuardDuty, Shield, WAF, Inspector. Network segmentation via VPC, role-based IAM, MFA. Aligned with NENA NG-SEC standards.
To migrate legacy PSAPs without a service-disrupting flag day.
Hybrid + LSRG support. Legacy Selective Router Gateway integration, SIP-based i3 interconnection, and legacy CAMA-to-IP transition. Phased cutover with no disruption.
A 24/7 operations partner for the system, not another vendor relationship for the state to manage.
Fully managed services. 24/7 NOC, proactive monitoring, incident response, and SLA-backed uptime guarantees. Customers don't manage the network — NGA does.
California's NG911 is not assembled from repurposed carrier infrastructure. It's built on two products designed from day one for emergency communications — and tightly coupled so the network and the routing brain operate as one unified system.
A private, managed IP network purpose-built for 911 traffic. Carrier-grade reliability, cloud-native agility, native NENA i3 compatibility, fully managed by NGA. Replaces circuit-switched, selective-router infrastructure with a resilient, multi-path IP fabric that supports voice, text, video, and data.
Elastic scaling for surge events, automated failover for high availability, continuous deployment for rapid iteration. No hardware limitations, no forklift upgrades.
Multi-vendor architecture, geographic redundancy, active-active network design. Designed to eliminate "blast radius" risk before it propagates across the state.
Detects failures instantly, reroutes traffic dynamically, maintains service continuity. No manual intervention required during catastrophic events.
SIP-based i3 interconnection with AT&T, Verizon, T-Mobile, and others. Wireline, wireless, and VoIP integrated. Legacy CAMA-to-IP transition supported.
VPC network segmentation, identity-based access, encryption in transit and at rest, continuous monitoring via CloudTrail and GuardDuty, DDoS protection.
Round-the-clock Network Operations Center, proactive monitoring, rapid incident response, SLA-backed uptime guarantees. Customers don't manage the network — NGA does.
Next Generation Core Services (NGCS) is the foundational intelligence layer of the NG911 ecosystem. It receives calls, correlates data, applies policy, and delivers calls to the correct PSAP. NEXiSCore is a standards-defined set of cooperating services — not a single box. Without NGCS, an ESInet is just a network; with it, you have an emergency system.
Voice, RTT, SMS, video, and IoT data ingested from wireless carriers, wireline, VoIP, and text-to-911 gateways. Foundation for a real-time intelligence and command platform.
Caller location (device, network, hybrid) plus GIS boundaries plus jurisdictional rules. Replaces legacy ESN, selective router logic, and static trunk routing.
Time-of-day, congestion, disaster-mode, manual overrides. Routing rules centrally managed and dynamically applied. During an outage, policy redirects without manual intervention.
Seamless transfers preserve location and data end-to-end. Mutual aid, regional operations, and disaster recovery supported across PSAPs and ESInets.
Failover handled at the policy and service level — not by humans. No single point of failure in the stack. Removes manual rerouting risk during emergencies.
Call detail records, routing decisions, transfers, and failures logged throughout the flow. Enables audit, reporting, and compliance for state and federal oversight.
A simplified view of the secure, end-to-end IP-based call chain that runs every emergency communication on the platform.
The Border Control Function authenticates the carrier and protects the ESInet from malformed or malicious traffic. The Emergency Services Routing Proxy applies policy and queries the ECRF and LVF. The call is delivered to the correct PSAP — with location and rich data preserved end-to-end.
The orchestrated combination of NENA i3 functional elements that powers every routing decision.
Core SIP call routing, policy execution, and GIS-based routing lookup against jurisdictional boundaries.
Validation of civic addresses and storage of caller location data for downstream use by PSAPs.
Defines routing and failover rules. Provides detailed call event logging for audit and compliance.
Authenticates carriers, enforces security policy, mitigates DoS, prevents spoofing and call loops.
Authoritative storage for GIS data: PSAP boundaries, civic addresses, and street ranges.
Centralized repository for analytics, reporting, and operational insights across the platform.
The NGA platform was built on the assumption that any component will eventually fail. Every layer carries its own redundancy, and every redundancy has its own redundancy.
Regional and Primary statewide networks, each able to carry full traffic. Real-time failover between them.
Four diverse carrier connections per ESInet, aggregated for eight diverse paths total.
Two per ESInet, paired with four highly available routers across the aggregated edge.
Two each across Central and Los Angeles. No single facility carries the system in either region.
Two geo-diverse SIP aggregation points each in Central and Los Angeles. Carriers ingress through redundant pairs.
NEXiSCore and the ESInet are designed for full alignment with the federal NG911 framework, NENA i3 standards, and the compliance requirements of public agencies operating at sovereign scale.
The platform reflects the FCC's vision of IP-based, standards-driven, interoperable emergency communications — built on NENA i3 functional elements, delivered over a modern ESInet, and architected for the full Phase 2 NG911 capability set.
NGA 911 — Platform BriefESInet replaces legacy selective routing with SIP-based call delivery — the FCC's core mandate for the NG911 transition.
ECRF and LVF deployed; calls routed dynamically on validated GIS data, not static trunks. PIDF-LO carried in SIP signaling end-to-end.
Distributed across regional providers using defined interfaces, not proprietary dependencies. Aligns with the FCC's intent to prevent vendor lock-in.
Originating service providers deliver SIP traffic to designated NG911 Delivery Points — the standardized handoff Subpart J requires.
The platform meets the compliance frameworks public agencies and sovereign governments require — across criminal justice, federal cloud, health, international, and information security.
NGA doesn't just transport calls. We deliver the resilient infrastructure that saves lives — across California's Central and Los Angeles regions, every minute of every day.