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NovaTec
Mobile Gateway S20
4.5
Internal Structure of the NovaTec
Mobile
Gateway S20
The NovaTec
Mobile Gateway S20 is comprised of several different modules. All modules can
be inserted into the 19“ rack and then connected together at the rear of the rack via the
backplane. The individual slots inside the system are clearly numbered on the backplane to
ensure easy identification. The left slot is Slot 1 where only the CCU should be inserted. On the
right, next to the CCU is Slot 2, and so on up to Slot 17. On the right-hand side of Slot 17 is
the power supply slot. This slot is double the width of the others and accommodates the power
supply for the whole rack. The slot designations (slot numbers) can be found on the front side
of the back plane. The numbers can be seen on the back plane when viewed from the insertion
side of the 19“ rack.
The
CCU
is a Central Control Unit and is the core of the system. The CCU provides four
BRA interfaces, one Centronics and one RS232 interface. In addition the CCU provides a
plug in space for either a four time BRA or a two time PRA expansion board.
The
CCU Light
corresponds to the CCU with the exception that the CCU Light has no BRI
Interfaces.
The
CCU-3
corresponds in the basic functions to the CCU. The difference is firstly that
the CCU-3 has instead of the printer interface an ethernet interface, which can be either
operated with 10MBit or 100Mbit. Also the CCU-3 does not have ISDN Interfaces on the
board but can be equipped with either 2 PRI or 2 BRI boards. All Support-Functions, that
are on the CCU-Light/CCU via V.24 or ISDN are still realisable and can be carried out via
Ethernet on the CCU-3.
The Call-Back-Server
(CBS)
corresponds in the optical features the same as the CCU-3.
When the system is being used with the Call-Back-Functionality, the corresponding required
software CBS must be used. Installation guides for the CBS can be found in Chapter 5 of
this handbook under CBS.
The
S
ea-
O
f-
S
ims
(SOS)
must be used in conjunction with the Sim-Server . The SOS
corresponds in the optical features the same as the CCU 3. Operation of the NMG as Sim-
Server requires the installation of the SOS software and one SCU must be installed in the
system. Installation guides for the SOS can be found in Chapter 5 of this handbook under
SOS.
The Wireless Access Unit
(WAU)
provides the access to the mobile network and contains:
- up to two daugther boards with two dual band engines each
- one 4 to 1 antenna combiner/multiplexer
- the electronic access to the backplane (hot plugable)
Please note:
Never run the system without antenna! Do not leave any RF input without
termination!
Each daughter board contains the SIM card reader, which is accessible via the front panel.
