User's Manual

Figure 22: Indicators (LEDs) of the CHU
Legend: Indicators (LEDs) of the CHU
No. LED Color Description
1 ALM red Lights in case of an error
2 TX green Lights green if the transmitter of the CHU is switched on
3 RUN green Flashes if the CHU is in operation
4 STB yellow Lights if the CHU is in standby operation
3.2.7 Base Station Controller Unit (BSCU)
The Base Station Controller Unit (BSCU) is the control unit of the base station and
secures the connections inside of the DIB-R5 advanced as well as to external network
constituents such as system controller nodes.
Furthermore, the BSCU receives and distributes satellite-based clock and timing signals
for the synchronization of the base stations, which are acquired via the integrated GNSS
component (Global Navigation Satellite System) with connected antenna. GNSS includes
all the common systems, such as GPS, Galileo and Glonass. As an option, time is
obtained via the Precision Time Protocol (PTP) from a so-called reference time source
(Grandmaster Clock).
In addition, the BSCU is the interface to the ACCESSNET-T IP, with which network con-
stituents such as switching nodes, the network management system (NMS) or applica-
tions are connected.
The BSCU is a modular subrack for the DIB-R5 advanced. To increase availability, up to
two BSCUs can be installed. A BSCU can be replaced during ongoing operation in case
of malfunctions to quickly re-establish radio coverage, if a second BSCU is in operation.
The following figure shows the front view of the BSCU. The following table describes it in
detail.
Product description
Components> Base Station Controller Unit (BSCU)
DIB-R5 advanced
44 Operation Manual 90DIBR5advancedOM02 - 1.0