Glossary of Terms

Understand basic Public Safety definitions and terms.

CELL_ESRD

Definition:

A 10‐digit number used to support routing of wireless 9‐1‐1 calls through the 9‐1‐1 network. The CELL_ESRD is utilized at
the PSAP for static ALI record retrieval for CAS or Hybrid‐CAS solutions. An ESRD is an identification of call origination.

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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Inter-Tandem Transfer

The capability of transferring a call over the 9‐1‐1 network from a PSAP served by one 9‐1‐1 tandem to a PSAP served by a different 9‐1‐1 tandem.

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SELECTIVE TRANSFER

Provides the PSAP with the ability to transfer the incoming 9-1-1 call to a fire, police, or ambulance for the particular number calling 9-1-1 by...

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Cell Sector or Cell Face

An area consisting of a certain portion or all of the total coverage area of a cell site. One face of a cell antenna, typically three‐sided, that...

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