363-206-285
Issue3,June2001 Page3of6
DDM-2000 OC-3 MULTIPLEXER
Figure 3. DDM-2000 OC-3/OC-12 Front Panel Layout
Table 1. Common Circuit Packs on DDM-2000 OC-3/OC-12
Designation Functional Name
SYSCTL System Controller
OHCTL Overhead Controller
DS1 DS1 Low Speed Interface
DS3 DS3 Low Speed Interface
STS1E EC-1 Interface
MXRVO VT-to-STS1 Multiplexer
OLIU Optical Line Interface Unit
TGS/TG3 Sychronous Timing Generator
D
S
1
D
S
1
D
S
1
67
D
S
1
D
S
1
D
S
1
234
D
S
3
D
S
3
1
D
S
1
5
D
S
1
1
C
T
G
2
T
G
1
O
L
I
U
O
L
I
U
M
X
R
V
O
M
X
R
V
O
S
T
S
1
111
A
B
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)
8(P)
O
H
C
T
L
Timing Main
Group A Group B Group C
Function Units
Low Speed
E
S
T
S
1
E
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