47
5
Installing and Routing E1/T1 Cables
E1/T1 Ports
a
Overhead Cabling
b
Related wiring tables are delivered with the specific cables.
Keep them properly.
Connect the DDF to the D75S board using 75-ohm
E1 cables, to the D12S board using 120-ohm E1
cables, and to the D12B board using 120-ohm or
75-ohm E1 cables.
The exterior, pin assignment, and installation method of the
T1 cables are the same as those of the 120-ohm E1 cables.
75-ohm 8xE1 cable
120-ohm 8xE1 cable
•
Routing E1 cables for the upper subrack
1
1
2
2
E1 cables for the
upper subrack
Route the E1 cables into the cabinet through the
cable holes on the top of the cabinet.
Route the E1 cables for the upper subrack downwards
along the rear panel of the cabinet to the cable
distribution plate of the upper subrack, and then route
the E1 cables through the cable distribution plate.
NOTE
CAUTION
NOTE
E
1
/
T
1
interface board
(
D
75
S
,
D
12
S
,
D
12
B
)
Pin
1
Pin
44