Glossary of Terms

Understand basic Public Safety definitions and terms.

Point Code (PC)

Definition:

Point Code. The address identifier for an SS7 network element.

SSN

Sub‐system Number. Identifies the sub‐system within an SS7 network element.

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GSX / SGX

A Sonus‐specific media gateway that converts a traditional wireline call into a VoIP call. One variant, SGX, converts SS7 signaling.

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PPSS

PSAP Premise Serving Site.

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PDM

SnapTrack Position Determination Module, consisting of a location server and a WARN manager.

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