RFTETRA vs GSM: Key Differences Explained
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This page outlines the core differences between TETRA and GSM technologies. We’ll explore their distinct features and compare them side-by-side.
TETRA System
Defined by the European Telecommunications Standards Institute (ETSI), TETRA stands for Trans-European Trunked Radio System.
It boasts a maximum data transmission rate of 36 Kbps, utilizing π/4-DQPSK modulation.
GSM System
GSM, or Global System for Mobile Communication, is a widely adopted mobile communication standard.
It supports both circuit switching and packet switching methods.
GSM networks invariably operate in a star configuration, with all communication routed through a base station. Consequently, when two mobile devices need to communicate, the call setup and processing are handled via the base station.
Basic Comparison Between TETRA and GSM
The following table highlights key differences between TETRA and GSM technologies:
| Specifications | TETRA | GSM |
|---|---|---|
| Access technique | digital TDMA | FDMA, TDMA |
| Frequency of operation | 400 MHz | 800MHz, 900MHz, 1800MHz, 1900MHz |
| Bandwidth | 6.25KHz | 25KHz, 12.5KHz (1/2 rate codec) |
| Call setup time | <1 sec | <10 sec |
| Data support | available | available |
| Group calls | supported | Not supported (available in conference mode) |
| WAN communication | Possible | Available |
| Handover/roaming | supported | supported |
| Authentication & Encryption | supported | supported |
