![]() ![]() Tetra dates from the early 1990s, but enjoyed a slower roll-out than its main competitor-principally because of difficulties with international standardisation efforts and technical implementation. Tetrapol equipment suppliers include Matra Nortel and Siemens. European user countries include the Czech Republic, France, Germany, Romania, Slovakia, Spain, and Switzerland. (For more information, see By the end of 1998, 30 organisations in 15 countries had specified Tetrapol networks with a total user base approaching 500,000. ![]() Now, Matra Nortel, the company continues with its publicly available standard (PAS) effort. However, the technology has received certification from the International Telecommunication Union and recognition from the Schengen group. Matra has repeatedly tried for formal acceptance from the European Telecommunications Standards Institute (ETSI) but so far has failed. Matra first sold the system, which targeted private-mobile-radio (PMR) use, to the French Gendarmerie as “Rubis.” To accelerate market acceptance and help create a de facto standard, the company released the technology into the public domain in 1994. ![]() Tetra and Tetrapol are similar because both systems have roughly parallel backgrounds.
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