DVI-100 Digital Voice Interface for TETRA-Infrastructure July 2012

DVI-100Digital Voice Interface for

TETRA-Infrastructure

July 2012

Funk-Electronic Piciorgros GmbHDipl.-Ing. Michael D. Piciorgros (CEO)

Piciorgros GmbH * Germany

TETRA (TErrestrial Trunked RAdio) is a digital standard similar to GSM for voice and data applications.

All voice data will be processed and encoded into a digital bit stream at the sender side and decoded back to “analog audio” on the receiver side.

During the whole transmission process within the TETRA infrastructure this digital voice data remains a digital 1-0-1… bit stream.


The CoDec (Coder / Decoder) used for the TETRA voice process operates using an so called ACELP algorithm.

(ACELP Algebraic CELP, CELP Code-Excited Linear Predictive)

The result is a fantastic TETRA audio quality for special use in extreme environment as for Police, Firefighters, Ambulance and other (industrial) applications.


The DVI-100 (Digital Voice Interface) is a special TETRA terminal, that feeds all received TETRA voice signals to its Ethernet (IP) port and vice verse, without any conversion to analog. So there is no reduction of the original TETRA voice quality.

Additional also Status and SDS messages are forwarded to the DVI Ethernet port and sent to a (any) destination IP (and vice verse).

The DVI uses the Open PTX Protocol (www.openptx.org) developed in co operation by the University of Dortmund and Piciorgros GmbH


The DVI-100 can be operated in Server and in Client Mode and can be used as follows:

DVI Client to DVI Server [Back-to-Back]

DVI Server to Infrastructure switch

DVI Server to PC / iPhone / (iPad)

TETRA MicroSPOT – DVI in DMO mode


The DVI-100 can be operated in DMO Mode and can be used as a TETRA Micro-Spot:

Connected to a DVI-Server

Connected to a PC / iPhone / iPad

Connected to a TETRA Infrastructure switch


The DVI-100 Features

Connect TETRA networks of different manufacturer

Connect TETRA networks with different frequencies (450 MHz / 800 MHz)

In house coverage

Access to the own TETRA network from out of the coverage area (Paris – Cologne)

Temporary Micro-Spot (on site)

Dispatcher

Design your own application


The PC GUI

Up to 10 “local” IP user displayed

Up to 10 TETRA groups displayed

Supervisor Mode (can change the active group)

All PTT, SDS and Status are displayed with Time Stamp and stored in a csv-database

PTT Push To Talk button

Signaling according to TETRA terminals

SDS send feature


Questions?

Was?

Warum?Wie?


Funk - Electronic Piciorgros GmbH

Claudiastr. 5

51145 Köln-Porz

Germany

www.piciorgros.com

www.TetraModem.com

Thank you very much for your interest in our Products

DVI-100 Digital Voice Interface for TETRA-Infrastructure July 2012

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