GSM

Definition:

Global System for Mobile Communications. The standard digital cellular phone service. GSM follows a set of ETSI

standard specifying the infrastructure for a digital cellular service.

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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Bearer Channel

A channel capable of transmitting all the information required for communication, such as user data, synchronizing sequences, and control signals.

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ESS

Electronic Switching System - Computerized switching of telephone calls used by the telephone company.

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Shape File

A file containing a Geolocation shape(s), such as PSAP shapes or PSAP and cell sector layers.

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