T-GSM 810 / GT800

REMORA Category: T

“T-GSM 810” is a specific adaptation of the GSM (Global System for Mobile Communications) standard, tailored to integrate with China’s GT800 trunked system. Here’s a breakdown of what this entails:

  1. Trunked GSM System: Traditional GSM is a widely used standard for mobile phone networks. “Trunked” systems like GT800 are a type of radio system that uses a set of frequencies shared among multiple users. In trunking, users are dynamically assigned to available frequencies, which allows for more efficient use of the spectrum.
  2. GT800 Standard in China: GT800 is a specific standard in China that combines GSM services with trunked radio services. It supports both circuit-switched (traditional voice calls) and packet-switched (data transmission) GSM services. The inclusion of trunking services means that the system can also handle group call features and priority calls often used by emergency services, public safety organizations, and in industrial settings.
  3. Band Independent Format: GSM specifications are designed to be flexible with respect to frequency bands. This flexibility allows GSM services to be deployed across various frequency bands, depending on regional regulations and requirements.
  4. T-GSM 810 for GT800 System: To integrate GSM with the GT800 trunking system, a new frequency band was added to the GSM specification, designated as T-GSM 810. This integration ensures compatibility and seamless operation of GSM services within the GT800 system’s infrastructure.
  5. Operating Frequency Bands: T-GSM 810 operates in specific frequency bands that are slightly different from the conventional GSM bands. It operates in two main frequency ranges:
    • 806 MHz to 821 MHz: This range is used for mobile devices to transmit and base stations to receive.
    • 851 MHz to 866 MHz: In this range, base stations transmit, and mobile devices receive.

The creation of T-GSM 810 illustrates the adaptability of GSM technology to meet specific regional needs and integrate with existing systems like the GT800 in China. By adding this new frequency band to the GSM specification, it allows for a broader and more versatile use of GSM technology, catering to both standard cellular services and specialized trunking communication needs.