TETRAPOL is a new fully-secured-digital solution designed to meet the growing needs and expectations of highly-demanding Professional Mobile Radio (PMR) users such as Public Safety Forces, Transport or Industry. Available, field-proven on nationwide full-featured networks, open and publicly available, TETRAPOL addresses daily issues and challenges faced by PMR users. Among others: radio channel congestion mobile data applications communications between different agencies security of communications adaptability and responsiveness to unusual operational situations TETRAPOL is more than just a digital radiocommunication solution. It is an integrated telecommunication platform for voice and data applications, offering a 'mobile office' to people in the field, highly improving their efficiency and autonomy.  Key elements of TETRAPOL Technology : Readers should contact TETRAPOL manufacturers to know more about this new digital technology and the product range they have derived from it. Information can also be found at :      VOICE SERVICES Multi-site Open Channel Talk Group Scanning Talk Group Merging Individual call Multi-party call PABX/PSTN call (telephone interconnect) Call forwarding Call transfer Direct-mode (ie 'simplex' channels) emergency call Direct mode with dual watch Late entry Talking Party Identification Common platform for voice and data communications Consistent audio quality over the whole coverage Similar audio quality in clear and encrypted modes High performing vocoder in noisy environments  DATA SERVICES Common platform for voice and data communications, same coverage Mobile data Data transmissions do not require additional sites IP Access Status Short message Messaging Access to data bases GPS - AVL  ORGANISATION SERVICES - OPERATIONAL SERVICES Talk Group Merging Dynamic Group Number Assignment Priority levels Pre-emptive emergency call Ambience Listening Late entry Talking Party Identification Virtual Private Networking Connection to other telecommunication networks Flexibility / modularity Larger radio coverages than competing solutions => fewer repeater sites are necessary to cover a given area Spectrum-efficient solution Trunking (automatic and dynamic allocation of system resources) Simulcast capabilities Cellular radio coverage Seamless Roaming Coexistence with other PMR systems - SECURED SERVICES Pre-emptive emergency call Ambience Listening Direct-mode (ie 'simplex' channels) emergency call Talking Party Identification End-to-end encryption Secured Over-The-Air key distribution User-friendly encryption mechanisms Mutual authentication Protection against lost or stolen terminals High performing vocoder in noisy environments - SPECIFIC PMR SERVICES Multi-site Open Channel Talk Group Direct-mode (ie 'simplex' channels) emergency call Direct mode with dual watch  NETWORK FONCTIONNALITIES - COMMUNICATIONS SERVICES Individual call Multi-party call PABX/PSTN call (telephone interconnect) Call forwarding Call transfer Talking Party Identification Connection to other telecommunication networks Consistent audio quality over the whole coverage Similar audio quality in clear and encrypted modes Seamless Roaming - ENGINEERING Multi-site Open Channel Larger radio coverages than competing solutions => fewer repeater sites are necessary to cover a given area Same radio coverage for voice and data communications, whether clear or encrypted Data transmissions do not require additional sites Spectrum-efficient solution Trunking (automatic and dynamic allocation of system resources) Simulcast capabilities Cellular radio coverage Seamless Roaming 12.5 kHz solution GMSK modulation FDMA on narrow channels Peaceful coexistence with other PMR systems - CYPHERING End-to-end encryption Secured Over-The-Air key distribution User-friendly encryption mechanisms Mutual authentication Similar audio quality in clear and encrypted modes
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