Lucent Technologies DDM-2000 OC-3 User Manual

363-206-285
Shelf Descriptions and Configurations
Issue 3 June 2001
3-23
HDSL Interface 3
The BBF8 circuit pack provides for HDSL interface capability on the DDM-2000
OC-3 shelf. It allows the transport of T1 payloads, for up to 12,000 feet, over two
metallic 24 AWG twisted-pair lines. Figure 3-14 shows examples of HDSL circuit
packs providing this capability. Function group A is an example of a 1xN (1x2)
protected configuration, while function group C is in the unprotected mode. At the
present time there is a limit of three HDSL circuit packs per function unit (including
the Protection slot). Future enhancements will increase this capacity.
Equipping the main slots with 24-type or 29-type OLIUs allows the shelf to provide
an OC-12 ring interface.
Figure 3-14. OC-3/OC-12 Shelf with HDSL Interface
67
234
1
5
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
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
M
X
R
V
O
M
X
R
V
O
1
7
7
A
1
7
7
A
1
7
7
A
H
D
S
L
H
D
S
L
H
D
S
L
1
7
7
A
1
7
7
A
2341
H
D
S
L
H
D
S
L
675 8(P)
H
D
S
L
tpa 852306/01
1
7
7
A
1
7
7
A
1
7
7
A
1
7
7
A
1
7
7
A

Lucent Technologies DDM-2000 OC-3 Specifications

General

Brand	Lucent Technologies
Model	DDM-2000 OC-3
Category	Multiplexer
Language	English