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Digital trunked radio systems are modern radio systems for private and public professional radio applications and for emergency radio applications (PMR/PAMR 2 ). The first customers for Tetrapol were the gendarmerie (mid-1992) and the police (early 1995) in France. Today, Tetrapol technology is supported and is being further developed by two organisations: the Tetrapol Forum (predominantly manufacturers) and the Tetrapol User's Club (user organisations). Tetrapol 1 was originally developed by Matra Communication (now EADS), France. 9ģ Tetrapol Factsheet 3/9 1 Introduction Tetrapol is a digital, cellular trunked radio system for voice and data communications. In Switzerland, the Tetrapol system has been adopted for the POLYCOM national emergency radio network.Ģ Tetrapol Factsheet 2/9 Contents 1 INTRODUCTION DEVELOPMENT IN EUROPE LICENCES IN SWITZERLAND SERVICES TECHNOLOGY FREQUENCIES NETWORKS. The modulation method used is GMSK (Gaussian Minimum Shift Keying) and in Switzerland the channel spacing is 10 khz. Tetrapol is primarily designed for the needs of emergency services and is very successful in this market segment. All these user groups either have their own private trunked radio system or use the services of a trunked radio systems operator. Potential users of trunked radio systems include closed user groups such as transport services, airports, energy companies and the emergency services. The first Tetrapol customers were the gendarmerie (mid-1992) and the police (early 1995) in France. Tetrapol was originally developed by Matra Communication (now EADS), France.

238000004642 transportation engineering Methods 0.1 Federal Department of the Environment, Transport, Energy and Communications DETEC Federal Office of Communications OFCOM Licences and Frequency Management Division Radio Technology Section 14 July 2015 Tetrapol Factsheet Trunked radio system for emergency services Summary Tetrapol is a digital, cellular trunked radio system primarily for voice communications though also for data.

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Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Siemens Schweiz AG filed Critical Siemens Schweiz AG Priority to EP09161928A priority Critical patent/EP2259658A1/en Publication of EP2259658A1 publication Critical patent/EP2259658A1/en Status Withdrawn legal-status Critical Current Links Original Assignee Siemens Schweiz AG Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Inventor Patrick Mächler Current Assignee (The listed assignees may be inaccurate.

Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Withdrawn Application number EP09161928A Other languages German ( de)

#Tetrapol fdma rate pdf#

Google Patents Method for interconnecting two Private Mobile Radio networksĭownload PDF Info Publication number EP2259658A1 EP2259658A1 EP09161928A EP09161928A EP2259658A1 EP 2259658 A1 EP2259658 A1 EP 2259658A1 EP 09161928 A EP09161928 A EP 09161928A EP 09161928 A EP09161928 A EP 09161928A EP 2259658 A1 EP2259658 A1 EP 2259658A1 Authority EP European Patent Office Prior art keywords pmr network terminal gateway call Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents EP2259658A1 - Method for interconnecting two Private Mobile Radio networks

EP2259658A1 - Method for interconnecting two Private Mobile Radio networks