Glossary of Terms

Understand basic Public Safety definitions and terms.

ALI Database

Definition:

A database managed by Intrado or other 9‐1‐1 hosts. The ALI database is accessed by the PSAP when a 9‐1‐1 call comes in; it is accessed by the telco in an SR/ALI routing environment to route a 9‐1‐1 call to the PSAP.  The TN, address, and name associated with the phone from which the 9‐1‐1 call is placed are furnished to the PSAP through the ALI database.

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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CELL_ESRD

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 atthe PSAP for static ALI...

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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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Wireless Phase 0

0 Required by FCC. The delivery of a wireless 9‐1‐1 call (where 9‐1‐1 are dialed digits) to a PSAP.

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