5
Installing DSL Access Wiring
The local loop terminates at the punchdown block or NID (Network Interface Device).
Cables must be connected from the customer premises side of the punchdown block or
NID to an RJ11 jack. Typically, the punchdown block is installed in commercial locations
and the NID is installed in residential locations.
Procedure
1. Access the punchdown block or NID.
2. Disconnect the DSL access pair from the local loop. A punchdown block is shown in
the following example.
WARNING:
!
Do not continue unless the DSL access line from the local loop has been
disconnected at the NID or punchdown block. Refer to
Important Safety
Instructions
on page 20.
3. Locate the DSL pair of T1/R1 connectors on the customer premises side of the NID
or punchdown block. Attach the cable that will be connected to the DSL jack.
A
B
C
D
DSL
Access
from Local
Loop
Wiring to
DSL Jack
Bridge Clip
Punchdown Block
97-15348
Demarcation Point
Customer Premises
