PMR
IP links for radios and data
PMR
Portable Tetra infrastructure for a quicker deployment
O
n the Cassidian stand, visitors saw demonstrations of tempo-
rary Tetra radio coverage for appli- cations such as disaster relief, based on the company’s growing range of transportable infrastructure. A port- able Tetra switch, the DXT3p, was unveiled at the show. T e
demonstration system in-
cluded a TB3p transportable Tetra base station linked by an E1 cable to a satellite modem and Ku-band up- link dish, from which the connection
S
howing a range of remote links for controlling analogue and digital radio was
André Wohnig, of Thiesen Hardware Software Design in Germany. “We have remote radio control over IP so we can use the IP net- work”, he said. And he added: “The biggest IP network is the Internet, so we can use the Internet too. “Additional to the data transfer from the
RRC (remote radio control), we have these Tetra/Tetrapol adapters. We can use Tetra radio to transfer the data and the voice over an IP network. So we can have a Tetra radio on top of a mountain and the user interface down the bottom of the mountain.” Also offered are converters for serial and
parallel data links. • Information:
www.thiesen.com
was relayed via a geostationary satellite to a DXT3 Tetra switch at Cassidian’s engineering base in Ulm, Germany. To complete the loop, an ISDN circuit from Ulm was connected to another Tetra base station placed on the other side of the stand, enabling exhibition visitors to try the satcom-linked end-to-end connection for themselves.
“T e customer can, via these two units, ob-
tain a feeling of how Tetra works”, explained Markus Weber, of sister company EADS As- trium. “T ere are slight delays, so the customer can get the feeling of what the delay is. It’s roughly half a second. “T ere was a large amount of talk of how far
one can live with that delay, and this system will work without delay. We did some tests be- forehand with our colleagues from Cassidian and we could then demonstrate that it’s OK and it’s acceptable. T at’s why we decided to demonstrate it here as well.”
• Information:
www.cassidian.com/tetra Cassidian’s suitcase-sized DXT3p Tetra
switch for major incidents and disaster relief. Power consumption is just 150W
Markus Weber demonstrates a Tetra- via-satellite connection, via the latest transportable infrastructure
IP links boxes for remote radio control and data connections, by German fi rm Thiesen Hardware and Software
LAND mobile January 2013
Situational awareness: this ‘virtual reality’ tablet application, demonstrated by Timo Bakker of Alcatel-Lucent, is designed for ‘fi rst responders’ at the scene of an incident. Superimposed on the tablet’s live camera are icons marking the location of nearby resources, mobile and fi xed – for example, medical staff and fi re offi cers, fi re hydrants and electricity supplies
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