Glossary of Terms

Understand basic Public Safety definitions and terms.

Roaming

Definition:

The ability to use a cellular phone to make and receive calls in places outside your home calling area.

Abandoned Call

An Abandoned Call is an emergency Call in which the caller disconnects before the Call can be answered by the PSAP (Public Safety Answering Point).

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Selective Routing

The capability to route a call to the particular PSAP based on the geographical location from which the call originated. Selective routing is...

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Alternate PSAP

An Alternate PSAP is designated to receive 9‐1‐1 calls if the call cannot be delivered to the primary PSAP.

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Re-order Tone

The sound provided to a caller to indicate a network failure in call delivery. Also referred to as "Fast Busy" (120 IPM (Interruptions per Minute)).

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