Glossary of Terms

Understand basic Public Safety definitions and terms.

EISI

Definition:

Emergency Information Services Interface. A services‐oriented architecture that describes a set of features and profiles
for providing, invoking, and monitoring emergency services with ESInet. Services may include ALI providers, medical
records service providers, fire stations, poison control assistance centers, police, hazardous material response, coast
guard, situation command center coordinators, telematics, etc. EISI also defines a service gateway and mediation
architecture that enables managed access to emergency information services.

Selective Router Bridge/Transfer

A scenario where IEN Voice has delivered a call to a PSAP supported by IEN Voice. That PSAP chooses to bridge on a PSAP that is not connected...

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Busy Tone

The sound provided to a caller to indicate the desired destination is unavailable. (60 IPM (interruptions per minute).)

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Real-Time

An operating mode in which the information to be handled is sent, processed, and returned in a time interval that is short relative to the...

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A-GPS (Assisted-Global Positioning System)

A-GPS (Assisted-Global Positioning System) is a system that often significantly improves the startup performance—i.e., time-to-first-fix (TTFF)—of a...

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