[Technology] TETRA Release 2 日期：2012-09-05 21:11:06 點(diǎn)擊：1137 好評：0
TETRA Release 1 (Voice + Data) already provides a very comprehensive portfolio of services and facilities but as time progresses there is a need to evolve and enhance all technologies to better satisfy user requirements, future proof inves...
[Technology] TETRA Security 日期：2012-09-05 21:10:40 點(diǎn)擊：1136 好評：0
The area of TETRA security is extensive, as it needs to provide different levels of security ranging from what is acceptable on commercial networks to what is acceptable on a national public safety network. The security mechanismsin the st...
[Technology] Technology Benefits 日期：2012-09-05 21:10:08 點(diǎn)擊：1813 好評：0
The core technologies used in the TETRA standard, such as Digital, Trunking and Time Division Multiple Access (TDMA) also provide a number of inherent advantages and benefits as follows: Digital Nowadays, practically everything electronic...
[Technology] Key Services 日期：2012-09-05 21:09:39 點(diǎn)擊：1616 好評：0
In developing the TETRA standard to meet the needs of traditional PMR user organisations, numerous services and facilities have been provided. Details of all the TETRA services and facilities can be found in the About TETRA Section under T...
[Technology] Markets & Applications 日期：2012-09-05 21:08:48 點(diǎn)擊：1136 好評：0
Markets TETRA networks are already operational in all the traditional PMR market segments listed below: Public Safety Transportation Utilities Government Military PAMR Commercial Industry Oil Gas By far the largest market is that of public...
[Technology] Guide ETSI Standards 日期：2012-09-05 21:08:17 點(diǎn)擊：1137 好評：0
TETRA Standard documents from ETSI come with the following prefixes: EG - ETSI Guide EN - European Norm ES - ETSI Standard ETR - ETSI Technical Report SR - Special Report TS - Technical Specification TR - Technical Report The brief guide t...
[Technology] Glossary and Definition of Terms in TETRA 日期：2012-09-05 21:06:15 點(diǎn)擊：1136 好評：0
Issue 3 February 2006 ACELP Algebraic Codebook Excited Linear Prediction method for low bit rate voice coding and decoding ADPCM Adaptive Differential Pulse Code Modulation AES Advanced Encryption Standard AI Air Interface Air Interface en...
[Technology] Using TETRA 日期：2012-09-05 21:04:15 點(diǎn)擊：1136 好評：0
Procurement and operation of a modern communications system requires consideration of several complex issues. This section is aimed at providing basic facts and guidance to help successful rollout and use of a TETRA system.The TETRA MoU As...
[Technology] Interoperability 日期：2012-09-05 21:03:49 點(diǎn)擊：1812 好評：0
TETRA Interoperability Certification - See certification summary tables - Download Certificates - See list of participating manufacturers - Download White Paper explaining the certification process (Chinese translation of paper available h...
[Technology] Regulatory: Radio Regulation and Spectrum 日期：2012-09-05 21:02:34 點(diǎn)擊：1812 好評：0
Licensing obligation Operating a radio communications network in most countries is subject to licensing by national telecommunications regulators, both for its type of use and the radio frequency spectrum it utilises, especially as radio f...
Customer Requirements With the rapid growth of the global economy, sea transport...
Customer Requirements Smart power grids are built on an integrated and high-spee...
Senegal is a democratic republic on the western-most coast of Africa. The countr...
The growing GoTa ecology is giving birth to a new global mainstream standard of ...
Global open Trunking architecture (GoTa) is the world's first CDMA-based next ge...
Tianjin Port is located in the lower reaches of the Haihe River in North China P...
