363-206-305
Circuit Pack Descriptions
Issue 3 June 2000
7-91
Narrowband Shelf - Introduction
7
The DDM-2000 FiberReach narrowband shelf is used in conjunction with the
wideband shelf to provide sub-DS1 rate services with protected or unprotected
DS1 or higher rate services. The narrowband shelf has its own power conversion.
An arrangement of the narrowband shelf is shown in Figure 7-35.
Figure 7-35. Narrowband Shelf
Circuit Packs in the Narrowband Shelf
7
The circuit packs in the narrowband shelf are as follows:
— AUA413 ringing generator unit (RGU)
— AUA432 power conversion unit (PCU)
— AUA421 channel and drop test unit (CDTU)
— FHB2 digital signal cross-connect backplane interface unit (DSXBIU).
POTS/
DS0
CU
.7"
POTS/
DS0
CU
POTS/
DS0
CU
POTS/
DS0
CU
POTS/
DS0
CU
POTS/
DS0
CU
.7".7".7".7".7"
POTS/
DS0
CU
.7"
POTS/
DS0
CU
POTS/
DS0
CU
POTS/
DS0
CU
POTS/
DS0
CU
POTS/
DS0
CU
.7".7".7".7".7"
PCU
FAIL
BUSY
FAIL
-48V
GND
1"
DDM-2000 FiberReach Narrowband Shelf
-20HZ
-48VDC
FAIL
123456
789101112
CLF
CONFIG
FE
NE
FAIL
LED Test
DSXBIU
Lucent
SLC-2000
FHB2
Lucent
AUA421
CDTU
Lucent
AUA432
-48VDC
RETURN
RGU
Lucent
AUA413
SLC
-2000
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