User Manual

RPC Installation RPC/RP Manual
WLL-RPC/RP-IN/UM-1.0 19June2000
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2.1.2.1 Enhanced Control Module
The ECNT module provides the Operation, Administration and Maintenance
(OA&M) support for the RPC. In addition, it provides the time slot cross connect
switch for communications between the E1IFs and the RPIFs. Figure 2-3
represents the ECNT functions.
Figure 2-3: ECNT Block Diagram
The ECNT module performs the clock synchronization by generating a
synchronized clock from the extracted clock signal from the E1 line on the E1
interface card and delivers it to the RP lines on the RP interface cards.
The RPC uses a control bus via the ADPCM highway on the mother board to
synchronize the system. The Control Bus is an 8-bit mixed bus address with data
and First-in First-out (FIFO) type bus. The main CPU on the ECNT card, the
local CPUs on E1 Interface cards and the RP-interface cards are all connected by
this bus. The main CPU on the ECNT card controls the bus.