Expert Documentation

Chapter 2
Available functions:
Figure 2.17: PowerMEX
- MAIN: HSL to basic module (cable max. length: 5 meters).
RJ45 pin 1 2 3 4 5 6 7 8
MAIN outputs TX+ TX- RX+ RX-
2.2.2.3.2 Connection
2.2.3 BRA
The PowerMEX board is connected to the MODULE 1 or MODULE 2 connector on the
PowerCPU board: see Boards - Hardware configuration - General Connection Diagram .
2.2.3.1 Hardware description
The BRA board The BRA (Basic Rate Access) board provides the basic access points (2 x
64-Kbps B-channels + 1 x 16-Kbps D-channel per access) for connecting the system to the
ISDN digital public network (point-to-point or multipoint T0 link) and, starting with version R2.0,
to a private network (point-to-point DLT0 link); 3 versions are offered:
- BRA2: 2 T0 accesses
- BRA4: 4 T0 accesses
- BRA8: 8 T0 accesses
With OMC it is possible to define the operating mode access by access: T0 (ISDN) or DLT0
(QSIG). If the choice is DLT0 (QSIG), the following operating mode may be defined: master =
Network (NT), slave = User(TE)
Note:
Configuration in T0/DLT0 is done by access pairs; if an access (04-001-01 for example) is configured in
DLT0, the 2nd one (04-002-01) must also be configured in DLT0.
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