Glossary of Terms

Understand basic Public Safety definitions and terms.

SIGTRAN

Definition:

Signaling protocol between the Intrado STP and the PGW. SIGTRAN is the name given to an IETF working group that
produced specifications for a family of protocols that provide reliable datagram service and user layer adaptations for
SS7 and ISDN communications protocols.

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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A-GPS (Assisted-Global Positioning System)

A-GPS (Assisted-Global Positioning System) is a system that often significantly improves the startup performance—i.e., time-to-first-fix (TTFF)—of a...

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Location by-value

In the context of location information to support IP based emergency services, a PIDF‐LO containing the location of an IP end‐point that can be...

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Central Office

A telephone switching center that contains the equipment to provide phone service to users in a particular geographic area. A central office may...

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