ipLDK-60 Hardware Description and Installation Manual
Issue 1
BOARD INSTALLATION
JAN, 2007
26
4.3 Expansion Main Board Unit (EMBU)
The EMBU (shown Figure 4.3A) provides the following:
§
DKT and SLT Interface Circuits
§
Ring Generation circuit
§
External Relay contacts for LBC or General purpose
§
Peripheral Device Decoding circuit
§
Master Clock Generation circuit
§
PFT circuit [CO1
ó
the last SLT port(STA8)]
§
PCM Voice Processing circuit with ACT2 (ASIC, voice switching including DSP) device for PCM
tone generation and PCM gain control.
FIGURE 4.3A EMBU
NOTE—
n
When AC Power was failed, the last SLT port on EMBU will be connected to CO1 automatically.
n
Even though the EKSU power is turned off while both systems(BKSU and EKSU) are working
properly, the BKSU will restart automatically.
