Glossary of Terms

Understand basic Public Safety definitions and terms.

Trunk Seizure

Definition:

The point in time at which a 9‐1‐1 call is assigned to a trunk and acknowledgment is provided by the equipment at the
distant end.

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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Foreign Data

Spatial data provided electronically to the Data Collection team by a PSAP or other 9‐1‐1 agency. This information is used in the creation and...

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Manual Transfer

A feature that enables the PSAP attendant to transfer incoming 9‐1‐1 calls by manually obtaining dial tone through use of the telephone switch or...

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Cell Site/Sector Information

Cell sector location information for wireless E9‐1‐1 calls is identification information for the cell sector from which awireless 9‐1‐1 call has been...

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