■■ A new digital network promises more features and capabilities, for example through the integrated use of data and voice.
Digital networks give more capacity from the same number of frequencies. ■■ Network capacity needs increasing but additional frequencies are not available. Organisations may be faced with any or all of the following: ■■ The existing infrastructure is ageing and needs replacement or a last-time buy ■■ The network uses 25 kHz channels and there is pressure from regulatory agencies (for example FCC in the US) to move to 12.5 kHz or narrower channels. This white paper explores various PMR/LMR technologies and standards.
#Tetrapol scc professional
Dedicated radio networks for use by specific organisations are called land mobile radio (LMR) in the US and professional mobile radio (PMR) elsewhere.
INTRODUCTION Many organisations are finding that they need to consider investing in a new or upgraded mobile radio communications network. Tait Radio Communications © White Paper: Technologies and Standards for Mobile Radio Communications Networks_PUBLIC_Feb10_Pg 2 26 Audio Performance Ease of Migration Reliability and Availability Coverage Spectral Efficiency Interoperability Privacy Summary. 22 EDACS OpenSky TETRAPOL NXDN Subscribing to a Commercial Cellphone Provider. 14 Recent Developments in Standards Standards and the Market for Mobile Radio Communications DMR dPMR TETRA APCO P Proprietary Options. Access Methods: TDMA or FDMA Modulation Schemes Vocoder Trunked or Conventional IP-based Backbone Data Technologies and Standards for Mobile Radio Communications NetworksĬontents Introduction.………………………………………….
0 kommentar(er)
