Glossary of Terms

Understand basic Public Safety definitions and terms.

Cell Site/Sector Information

Definition:

Cell sector location information for wireless E9‐1‐1 calls is identification information for the cell sector from which a
wireless 9‐1‐1 call has been placed. Generally, it contains information related to the address of the cell site and the
orientation of the sector (e.g., “123 Main St – NW Sector; Boulder, CO); but varies depending on what the PSAP desires
to see on their screen for each sector.

Wireless Phase .5

The delivery to a PSAP of either callback number or location information (but not both) for a wireless 9‐1‐1 call.

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Wireless Phase I & II

Phase I: Required by FCC Report and Order 96‐264 pursuant to Notice of Proposed Rulemaking (NPRN) 94‐102. The delivery of a wireless 9‐1‐1 call...

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WIN

Wireless Intelligent Network. Term used by cellular carriers in the wireless industry. SS7 based, Standardization Activity (IS‐53), MIN based...

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Dedicated Trunk

A telephone circuit used for a single purpose, such as transmission of wireless 9‐1‐1 calls.

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