NENA ENP key terms

A 911 system that automatically delivers the caller's callback number and location information to the answering center, enabling faster dispatch and response than basic 911 without location data.

A facility responsible for receiving and processing emergency calls and dispatching appropriate responders. PSAPs may be primary (first point of contact) or secondary (receiving transferred calls for a specific jurisdiction).

The feature that captures and displays the telephone number of the calling party to the call taker. ANI is used for callback and is distinct from the caller's actual location.

The feature that retrieves and displays the caller's address from a database linked to the calling number. ALI data must be kept current through regular database updates and coordination with service providers.

A repository maintained by the service provider that maps telephone numbers to subscriber addresses and associated emergency response information. Errors or stale records in this database cause responders to be sent to the wrong place.

A standardized list of valid street names, address ranges, and emergency service zones used to validate addresses and route calls. Addresses must match the guide before they can be entered into the ALI database.

A geographic area defined for emergency response that determines which police, fire, and medical agencies are dispatched to an address. Zones are tied to address ranges and routing rules in the ALI database.

The process of directing a 911 call to the correct answering center based on the caller's location or the network's routing tables. Accurate routing depends on current address and zone data.

The handoff of an emergency call from one answering center to another, such as from a primary to a secondary PSAP. Transfers must preserve critical caller information and avoid unnecessary delay.

A call handoff in which the original call taker stays on the line and briefs the receiving center before releasing the call. It reduces the chance that information is lost or the caller is dropped.

A call handoff in which the originating call taker releases the call immediately after sending it to another center, without a verbal briefing. It is faster but risks losing context if the caller must repeat information.

The telephone number at which the caller can be reached if the call is disconnected. Call takers should confirm this number early, especially when ANI is unavailable or inaccurate.

The practice of ranking incoming calls by urgency so that life-threatening emergencies receive attention first. It guides decisions when call volume exceeds the number of available call takers.

The structured sequence a call taker follows from answering through dispatch, including gathering location, nature of the emergency, and safety information. Consistent processing improves accuracy and reduces omissions.

A systematic protocol-based approach to handling medical calls that includes interrogating the caller, giving pre-arrival instructions, and assigning a response priority. It is delivered by trained, certified dispatchers.

Guidance given to callers before responders arrive, such as CPR, bleeding control, or choking relief. Instructions follow approved protocols and are documented in the call record.

An internet-protocol-based emergency system that can receive voice, text, images, and video, and can route calls more precisely by location. It replaces aging circuit-switched infrastructure and enables data sharing among agencies.

A service that lets callers send a short message to 911 when voice calls are unsafe or impossible. It is not available everywhere, and call takers must confirm location and encourage voice contact when safe.

Software and data used to map addresses, boundaries, and response zones. Accurate GIS data supports call routing, dispatch, and analysis of response coverage.

Software used to record incidents, recommend units, track responder status, and document actions. CAD data supports dispatch decisions and later quality review and reporting.

The ability of separate agencies and systems to exchange information and work together during an incident. It depends on shared standards, compatible technology, and practiced procedures.

A formal arrangement in which agencies provide resources to one another during incidents that exceed local capacity. Agreements should define request procedures, authority, and cost responsibilities in advance.

A standardized management structure used to coordinate responders at incidents of any size. It establishes common roles, terminology, and a clear chain of command across agencies.

An ICS structure in which multiple agencies with jurisdiction or responsibility jointly set objectives and make decisions at an incident. It avoids conflicting direction when several agencies respond together.

A jurisdiction's written plan describing how it will respond to and recover from emergencies. It assigns roles, identifies resources, and should be exercised and updated regularly.

Planning that ensures essential functions, such as answering emergency calls, continue during disruptions. It covers backup facilities, redundant systems, staff relocation, and succession of authority.

The use of duplicate or backup components, such as power, network paths, or equipment, so that failure of one does not stop operations. Redundancy is a core design principle for emergency answering centers.

A planned program of reviewing calls, records, and outcomes against defined standards to identify errors and improve performance. Findings should feed training and process changes rather than blame.

The ongoing use of data and feedback to raise performance, often through small tested changes. It complements quality assurance by focusing on system causes and measurable outcomes.

Quantified indicators, such as answer time or call-processing time, used to judge how well a center is performing. Measures should be clearly defined, consistently collected, and tied to service goals.

The interval between when a call reaches the answering center and when a call taker answers it. It is a common performance measure and is often reported as a percentage answered within a target.

A written instruction describing how a routine task is to be performed. SOPs promote consistency and give staff a reference for expected practice, and they should be reviewed periodically.

A governing statement that sets expectations, limits, and direction for an organization. Policies are broader than procedures and require approval through established governance.

The structures and processes by which an organization makes decisions, assigns authority, and ensures accountability. In emergency communications it often spans multiple agencies and oversight bodies.

Outreach that teaches community members how and when to call emergency services, what to expect, and how to prepare. Effective programs use multiple channels and are evaluated for reach and behavior change.

The ongoing relationship between an emergency communications agency and the public it serves, built through communication, transparency, and responsiveness. Strong relations increase trust and cooperation during emergencies.

The structured process of bringing a new employee into the organization, including orientation, initial training, and integration with the team. Good onboarding improves retention and shortens time to competence.

Ongoing training that keeps staff current on technology, procedures, and standards after initial certification. It is typically tracked and documented to satisfy credentialing requirements.

Formal recognition that an individual has met defined knowledge or skill requirements, often through testing and documented training. Certifications usually require renewal to remain valid.

A relationship in which an experienced employee guides a less experienced colleague through coaching, feedback, and example. It supports skill development, confidence, and retention during early employment.

The number of subordinates who report to a single supervisor. Keeping spans manageable supports effective direction, feedback, and oversight, especially during high-stress operations.

Preparing for the departure of key personnel by identifying and developing future leaders. It reduces disruption and preserves institutional knowledge when vacancies occur.

The physical and emotional strain that can follow exposure to traumatic events. Agencies address it through peer support, debriefing, and access to professional assistance.

A program in which trained colleagues provide emotional assistance and referral to coworkers after difficult events. It supplements, but does not replace, professional mental health services.