Design differences between Standard PSAP and Backup PSAP centers

Structure of a PSAP center.

The division of labor into different types of centers—Primary PSAPs and Secondary PSAPs—is a structural design intended to maximize efficiency and expertise. The distinction between these centers exists to streamline the handling of high-stress, technical emergency communications:

• Primary PSAPs (The Initial Intake): This is the facility where 9-1-1 calls are first delivered by the network provider. The primary role here is to answer the call quickly, determine the caller's location, identify the nature of the emergency, and initiate the appropriate response. In many jurisdictions, the Primary PSAP handles basic information gathering and then dispatches local police resources.

• Secondary PSAPs (Specialized Handling): These centers receive calls that have been transferred from a Primary PSAP. This is necessary because certain emergencies require specialized training or distinct dispatch systems. For example:

  • Expertise: A Secondary PSAP may be dedicated solely to fire or emergency medical dispatch, staffed by personnel with advanced medical or firefighting certifications who can provide "pre-arrival instructions" (such as CPR guidance) while the responders are en route.

  • Jurisdictional/Agency Separation: In some regions, police, fire, and EMS are managed by different administrative agencies. Routing calls to a secondary center allows the relevant department to maintain direct control over their own specialized radio dispatch and equipment.

  • Resource Management: This separation prevents a single dispatch center from being overwhelmed by disparate types of data or traffic, ensuring that life-saving information is routed to the individuals best equipped to handle that specific crisis.

By using this two-tiered system, the emergency response network ensures that the initial call is answered as rapidly as possible, while subsequent specialized needs are met by the professionals most qualified to coordinate those specific services.

Some jurisdictions go beyond using just a primary PSAP center and their Secondary centers. To ensure operational capacity during emergencies when the main center is not available or is overloaded these jurisdictions implement backup 9-1-1 centers. Which are designed to mimic the main center’s capacities.

Keep in mind that a backup PSAP (Public Safety Answering Point) and a secondary PSAP are not the same thing in the 9-1-1 system. They serve distinct operational purposes. Ask yourself these questions when you are planning a new control room:

Differences between a secondary PSAP and a backup PSAP

A Secondary PSAP exists as part of the normal, day-to-day workflow to handle transferred calls. A Backup PSAP exists as a contingency measure for disaster recovery or system failures. While some facilities may have capabilities that overlap—or a Secondary PSAP might be used to assist during high-traffic "peak capacity" events—they are operationally defined by these different roles within the 9-1-1 infrastructure.

A Secondary PSAP is a designated facility that receives 9-1-1 calls only after they have been transferred from a Primary PSAP.

• They do not receive "first-routed" calls directly from the public.

• They are typically used to handle specialized dispatch functions (such as specific fire or EMS dispatch) that are separated from the initial call-taking process performed by the Primary PSAP.

A Back-up PSAP is a facility designed to maintain 9-1-1 operations if the Primary PSAP becomes unavailable, overloaded, or suffers a technical failure.

• The primary purpose of a backup site is survivability and continuity of service.

• It is equipped to perform the same functions as the primary center it supports, ensuring that 9-1-1 calls continue to be answered even during an emergency or system outage at the main site.

Implementing Backup PSAP centers.

Imagine for a second, that your main 9-1-1 center is not available. How do you stay operational? While a primary center handles all daily and standard emergency call volume, it can go offline or lose power.

If the secondary PSAP is the same building or even in a different building but still part of the same grid, it might also go offline. Typically, in these cases backup centers are planned to exist in a different location, dependant of a different grid and expected to become online as soon as the main PSAP is no longer available.

For a real life example, visit our case study on Morris County’s Backup center and how they approached building their backup site, which doubles as an educational facility for future 9-1-1 telecommunicators when not in use.

Backup centers are designed to be activated only during specific events, such as catastrophic equipment failure, power outages, natural disasters, or site-specific emergencies that render the primary center uninhabitable. A key characteristic of a well-designed backup facility is that it mirrors the technology and connectivity of the primary site (e.g., identical CAD, mapping, and radio services) to ensure that the transition between centers is transparent to the public.

Despite the difference in roles, both centers must follow the same operational standards and performance goals to ensure the public receives consistent, high-quality assistance regardless of which facility answers their call. Contact us to start planning your new backup PSAP.