363-206-285
Shelf Descriptions and Configurations
Issue 3 June 2001
3-21
OC-3 FiberReach Host Shelf - Enhanced Routing
with 26G2-U OLIU 3
Figure 3-12 shows enhanced routing with the single OC-1 26G2-U OLIU in place
of the dual OC-1 27G2-U OLIU. The 26G2-U can drop DS1s without the need for
the MXRVO Multiplexer or BBF5 Jumper circuit packs. The 26G2-U provides
OC-1 Ring Pass-Through, OC-1 Ring Hairpin Single-Homed and Dual-Homed,
and OC-1 Ring Hairpin Local Drop applications. The Group 4 shelf is required.
Figure 3-12. OC-3 DDM-2000 FiberReach Host Shelf - Enhanced Routing with
26G2-U OLIU
1
T
G
2
T
G
1
111
S
Y
S
C
T
L
U
S
E
R
A
N
E
L
P
AUXCTL
SYSCTL
2(P) 2(P) 2(P) 2(P)
O
H
C
T
L
Timing Main
Group A Group B Group C
Low Speed
S
Y
S
C
T
L
u
s
e
r
p
a
n
e
l
Main
Low Speed
D
S
1
(P)
D
S
1
D
S
1
(P)
D
S
1
D
S
1
(P)
D
S
1
Function
Units
D
S
1
(P)
D
S
1
A B C D
Group
O
L
I
U
O
L
I
U
C
A
B
Function Units
OC-1OC-1
DDM-2000
OC-3 Shelf
O
L
I
U
O
L
I
U
UU
2
2
O
L
I
U
2
2
O
L
I
U
DDM-2000
FiberReach
Shelf
2
6
G
2
-
2
6
G
2
-
2
6
G
-
U
2
6
G
-
U
D
S
1
P
M
D
S
1
P
M
D
S
1
P
M
D
S
1
P
M
D
S
1
P
M
D
S
1
P
M
D
S
1
P
M
D
S
1
P
M