Glossary of Terms

Understand basic Public Safety definitions and terms.

Re-order Tone

Definition:

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)).

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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Wireless Phase I & II

Phase I: Required by FCC Report and Order 96‐264 pursuant to Notice of Proposed Rulemaking (NPRN) 94‐102. The delivery of a wireless 9‐1‐1 call...

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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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Roaming

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

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