Here are five frequently asked questions about TETRA, and the answers you should know. If TETRA technology is not familiar to you, check these five typical questions and the answers you should know.
TETRA is the world’s most used digital PMR standard. It is in use in around 130 countries.
The top four user groups are
TETRA networks come in many sizes, from nationwide networks to installations with just one or two base stations.
Coverage depends very much on three things
TETRA is an open standard, and the competition between vendors has brought many innovations to TETRA’s development. Today, using the same frequency band with similar output power, TETRA solutions from Airbus can achieve outstanding coverage.
TETRA is well suited to critical data applications that need utmost reliability. Typically, telemetry produces transactions of just a few bytes from different sources.
TETRA offers powerful Short Data Service (SDS) messaging. The SDS messages can be delivered on the control channel, during speech and over dedicated data channels. Furthermore, TETRA systems from Airbus allow a single message to be addressed to a group of devices. This saves capacity and time.
The IP Packet Data service is the better choice for higher data volumes.
Using status messaging (16 bytes), SDS messages (140 bytes without concatenation) and IP Packet Data can make real sense especially if spectrum is limited.
The TETRA standard leaves it mainly to the manufacturers to define the interfaces to other networks. However, most combinations are possible.
For example, Airbus systems connect
As a rule, all legacy network services can be interconnected.
AES is an algorithm mainly for end-to-end encryption of voice services. It can also be used in TETRA for end-to-end encrypted SDS messages. Other end-to-end encryption algorithms are available.
Security in TETRA, particularly in TETRA systems from Airbus, involves far more than just end-to-end encryption.
Security begins with mutual authentication. Both the radio (subscriber unit) and the TETRA network verify each other.
There are multiple air interface encryption methods to cipher all traffic, including voice, signaling, and data.
In addition, security mechanisms include
TETRA security is very efficient at every level.
Did you know? TETRA and LTE complement each other. In fact, there are 50 ways that TETRA can provide the long-term support you need.