Lucent Technologies FiberReach DDM-2000 - Page 179

363-206-305
Shelf Descriptions and Configurations
Issue 3 June 2000
3-25
HDSL Services
3
Figure 3-24 and Figure 3-25 show examples of the DDM-2000 FiberReach in a
wideband application providing HDSL interface capability. The wideband shelf
uses the two main optical line interface unit (OLIU) slots to interface an OC-3 or
OC-12 line to the low-speed group(s). The OLIU circuit packs are equipped in
pairs. Low-speed interface growth proceeds in two HDSL circuit packs increments
by equipping the low-speed slots with a HDSL circuit pack. The SYSCTL and user
panel are always required in this application.
Figure 3-24 shows an unprotected low-speed configuration with the maximum of
three HDSL packs (six HDSL circuits). The Main slots are equipped with OC-3
OLIUs in this example.
Figure 3-24. DDM-2000 FiberReach — 6 Unprotected HDSL Circuits
(Unprotected)
Figure 3-25 shows examples of the DDM-2000 FiberReach in a wideband
application providing protected HDSL services. The wideband shelf uses the two
Main optical line interface unit (OLIU) slots to interface an OC-3 line to the low-
speed group(s). The OLIU circuit packs are equipped in pairs. Low-speed
interface growth proceeds in four DS1 increments by equipping the low-speed
slots with HDSL circuit packs. The SYSCTL and user panel are always required in
this application.
Figure 3-25 shows a 1x2 low-speed protection configuration with a maximum of 3
HDSL packs (six HDSL circuits).
S
Y
S
C
T
L
U
S
E
R
P
A
N
E
L
Main*
* 29-Type in Main slots for OC-12
Function
Units
2
8
O
L
I
U
2
8
O
L
I
U
A B C D
Low Speed
Groups
G
-U
G
-U
H
D
S
L
H
D
S
L
H
D
S
L
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