Glossary of Terms

Understand basic Public Safety definitions and terms.

PSAP-DN

Definition:

Public Safety Answering Point Directory Number. These are dialed digits which route a call to a PSAP.

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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Alternate Routing

A method by which 9‐1‐1 calls are routed to a designated alternate location if all IEN or wireless lines to the primary PSAP are busy, or the primary...

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Real-Time

An operating mode in which the information to be handled is sent, processed, and returned in a time interval that is short relative to the...

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ALI Steering

When the ALI provider receives a bid from a PSAP that has been configured to retrieve from an alternate ALI, the ALI provider steers that bid to the...

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