Nortel Networks Nortel Backbone Link Node Router 5030 - Manual (Page 2)

2
What Does the POTS Splitter Do?
The POTS splitter and HotWire Remote Termination Unit (RTU) are components in the
RADSL Access System. This system provides high-speed Internet or corporate LAN
access over traditional twisted-pair copper telephone wiring.
The POTS splitter filters out the DSL signal and allows the POTS frequencies to pass
through. The RADSL RTU and telephone can function simultaneously over the same
pair of copper wires at the customer premises when a POTS splitter is used at both
ends of the local loop.
Copper pairs run from the central office to the customer premises to create the local
loop. The local loop terminates on the customer premises at the demarcation point in a
punchdown block or NID.
Wiring is connected from the demarcation point to the POTS splitter and to the DSL
jack. Wiring also connects the demarcation point to an RJ11 wall jack for DSL access
by the RTU.
97-15346-01
Punchdown
Block or NID
DSL
Jack
RTU
New Wiring Connections Existing Wiring (POTS)
Customer Premises (CP)
DSL
Ethernet
Crossover
Cable
Ethernet
Cable
or
Central
Office
(CO)
Demarcation
Point
Local Loop
HUB
CP
POTS
Splitter
DSL - Digital Subscriber Line POTS - Plain Old Telephone Service
NID - Network Interface Device RTU - Remote Termination Unit
POTS
End-user
Systems
Network
Service
Provider
(NSP)