363-206-285
Shelf Descriptions and Configurations
3-16 Issue 3 June 2001
DS3 Data Services in OC-3 Shelf 3
Figure 3-8 shows an example of DS3 Data Services in an OC-3 shelf. The BBG19
DS3 circuit packs installed in function units A and B can provide a full range of
Multimedia Data Services Offerings. Four BBG19s are recommended due to
cable dressing (right angle BNC connectors are required) for use in function units
A, B, or C. However, up to six BBG19s can be installed connecting customer data
edge devices with services such as Ethernet, Token Ring, ATM, FDDI, Frame
Relay, and others, to the OC-3 ring.
Equipping the main slots with 24-type OLIUs allows the shelf to provide an OC-12
ring interface.
Figure 3-8. DS3 Data Services in OC-3 Shelf
C
T
G
2
T
G
1
O
L
I
U
O
L
I
U
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)
O
H
C
T
L
Timing Main
Group A Group B Group C
Function Units
Low Speed
2
2
2
2
B
B
G
1
9
B
B
G
1
9
B
B
G
1
9
B
B
G
1
9
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