Glossary of Terms

Understand basic Public Safety definitions and terms.

FGD or FG-D

Definition:

Feature Group D. An MF signaling protocol, originally developed to support equal access to long distance services,
capable of carrying one or two ten‐digit telephone numbers.
For Wireless 9‐1‐1 call transmission, FGD connectivity allows for delivery of a 20‐digit ANI stream. The ANI stream
contains both the pANI (ESRK or ESRD) and the caller’s callback number.

Forced Disconnect

Call is automatically disconnected when the Public Safety Answering Point telecommunicator hangs up.

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Manual Transfer

A feature that enables the PSAP attendant to transfer incoming 9‐1‐1 calls by manually obtaining dial tone through use of the telephone switch or...

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Disaster Routing

Capability of the telephone company, when notified by the PSAP, to reroute 9-1-1 calls to some other predesignated location during a disaster...

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Fixed Bridge List

The set of "star" codes that the PSAP can choose to assign to different destinations (like Poison Control). The numbers are PDSAP dependent, not ESN...

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