Zhone 5246 安装指导
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97-15345-01
Punchdown
Block or NID
DSL
Jack
RTU
Customer Premises (CP)
POTS
DSL
Ethernet
Crossover
Cable
Ethernet
Cable
or
Central
Office
(CO)
Demarcation
Point
Local Loop
HUB
New Wiring Connections
Existing Wiring (POTS)
End-user
Systems
DSL - Digital Subscriber Line
POTS - Plain Old Telephone Service
NID - Network Interface Device
RTU
- Remote Termination Unit
Network
Service
Provider
(NSP)
Installing the DSL Access Wiring
The local loop terminates at the punchdown block or NID. Wiring must be connected
from the customer premises side of the punchdown block or the NID to the DSL jack.
Typically, the punchdown block is installed in commercial locations and the NID is
installed in residential locations.
from the customer premises side of the punchdown block or the NID to the DSL 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. Disconnect the DSL access pair from the
local loop.
!
WARNING:
A punchdown block is used without a POTS splitter in the following example.