Maintenance Guide Part 1

NeTIS MAINTENANCE GUIDE – Version 1.1 6/139
2. NETIS -B
2.1 Presentation of the base station
NeTIS-B is a duplex TETRA transmitter receiver connected to the switch using an IP or G703
or V11 link or it can operate autonomously (TETRAG).
It manages a TETRA carrier which includes a signal channel and three phone channels.
The base station is composed of the following sub-sets:
A ventilation unit
An electronic unit with a backplane that can receive the following plug-in modules:
Power supply (ALIM)
CPU (CPUBDT)
Demodulator/ Down converter (DCTR) 2 slots for the use of 1 or 2 channel
diversities.
Modulator/Up converter (UCM2)
Power amplifier (PA)
The synthetic view below is an example of 4 site architecture.