Glossary of Terms

Understand basic Public Safety definitions and terms.

Routing Number

Definition:

Another name for ESRD/ESRK.

HEPE

Horizontal Estimated Position Error.

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E9-1-1 Service Provider

The entity responsible for establishing and overseeing the functions necessary to accept 9‐1‐1 calls from carriers and deliver to PSAPs using...

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Routing ESN

Used by the 9‐1‐1 Tandem switch office to properly route a 9‐1‐1 call. The routing ESN will change whenever the emergency services for the area...

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Cell Site

A transmitter/receiver location, operated by the wireless provider, through which radio links are established between the wireless system and the...

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