Paradyne HotWire 5246 User manual

TM
1
HotWire 5246 Remote Termination Unit (RTU)
Customer Premises
Installation Instructions
Document Number 5246-A2-GN10-00
October 1997
Before You Begin
An optional POTS (Plain Old Telephone Service) splitter is available for the 5246 RTU.
When a POTS splitter is installed, the telephone and 5246 RADSL (Rate Adaptive
Digital Subscriber Line) RTU can function at the same time over the same pair of
copper wires. In order to confirm the RTU installation, the POTS splitter should be
installed first. To install a POTS splitter, refer to the appropriate POTS splitter
document:
Document Number Document Title
5030-A2-GN10 HotWire 5030 POTS Splitter Customer Premises
Installation Instructions
5034-A2-GN10 HotWire 5034 Indoor POTS Splitter Customer Premises
Installation Instructions
Wiring and Cables Needed
The following wiring and standard connectors are used with this product:
New or existing unshielded twisted-pair wiring (CAT3 or better). The CAT3 wiring
must meet EIA/TIA-568 specifications with 24 AWG (.5 mm) or 26 AWG (.4 mm).
Standard RJ11 wall jack.
Standard Ethernet 8-pin, non-keyed modular plug for a PC or workstation. An
Ethernet straight-through or crossover cable is used. Refer to
Installing the RTU,
page 8, for Ethernet cable details.
Package Checklist
Verify that your package contains the following:
Model 5246 Remote Termination Unit (RTU)
DSL interface cable with RJ11 modular plugs
Power cord with power transformer
Ferrite choke
Warranty card
Refer to
Cables & Connectors, page 14, for standard pin numbers.

2
What Does the HotWire RADSL RTU Do?
The 5246 RTU is a component in the DSL Access System. This system provides
high-speed Internet or corporate LAN access over traditional twisted-pair copper
telephone wiring.
DSL Access with a POTS Splitter
Copper pairs run from the central office (CO) to the customer premises (CP) to create
the local loop. The local loop terminates on the customer premises at the demarcation
point in a punchdown block or network interface device (NID).
When a POTS splitter is used at both ends of the local loop, wiring is connected:
HFrom the demarcation point to the CP POTS splitter, and
HFrom the demarcation point to the DSL jack.
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)
NOTES:
— PC is used to represent any end-user system with an Ethernet connection and
DSL-based service.
— Network Service Provider (NSP) is used to represent any Internet Service
Provider (ISP) or internal LAN administrator.

3
DSL Access without a POTS Splitter
When the 5246 RTU is installed without a POTS splitter, a second telephone wiring pair
is needed for DSL access.
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)

4
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.
"Procedure
1. Access the punchdown block or NID. Disconnect the DSL access pair from the
local loop.
!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,
page 16.
A punchdown block is used without a POTS splitter in the following example.
ABCD
DSL
Access
from Local
Loop
Wiring to
DSL Jack
Bridge Clip
Punchdown Block
97-15348
Demarcation Point
Customer Premises

5
Green (T1) and red (R1) are the standard wiring colors used in the next two
illustrations.
In the next example, a NID is used without a POTS splitter. It includes an existing
POTS line and a second pair installed for DSL access. The pair for the POTS line
does not need to be disconnected unless a POTS splitter is going to be installed.
DSL/POTS
Access from
Local Loop
Telephone Network Interface Device (NID)
Ground
Tip
T1
(Green)
Ring
R1
(Red)
97-15439-01
Existing POTS
Wiring to
Telephone
Demarcation Point
Customer Premises
DSL Pair
POTS Pair

6
2. Locate the DSL pair of T1/R1 connectors on the customer premises side of the
NID or punchdown block. Attach the wiring that will be connected to the DSL jack.
Tighten both terminal screws with a flat-blade screwdriver.
DSL/POTS
Access from
Local Loop
Wiring to
DSL Jack
Telephone Network Interface Device (NID)
Ground
Tip
T1
(Green)
Ring
R1
(Red)
97-15438-01
Existing POTS
Wiring to
Telephone
Demarcation Point
Customer Premises
DSL Pair
POTS Pair

7
DSL Jack Installation
The 5246 RTU connects to the local loop via wiring from the demarcation point to an
RJ11 wall jack. The DSL twisted-pair wiring from the local loop terminates at a new or
existing wall jack. It may be necessary to install a standard single RJ11 jack or replace
a single jack with a double RJ11 jack.
The RJ11 6-pin jack uses the center two pins. For pin assignments, refer to
Cables &
Connectors , page 14.
97-15343-0
1
DSL
RJ11
Jack
Central
Office
Punchdown
Block or NID
Customer Premises
POTS/DSL
Local Loop
Demarcation Point DSL
Twisted-pair
Wiring
"Procedure
1. Wiring can be run from the punchdown block or NID to a new or existing wall jack.
Match the pair colors on both ends.
2. Label the DSL jack.
97-15300a
RJ11 Wall Jack
or
3. At the demarcation point, reconnect the DSL access wire pair to the local loop.
Refer to Installing the DSL Access Wiring , page 4 . Tighten both terminal screws
with a flat-blade screwdriver.

8
Installing the RTU
Place the 5246 RTU on a flat surface with clearance for the rear connectors.
"Procedure
1. Use the RJ11 6-pin cable for the DSL connection. Insert one end of the cable into
the jack labeled DSL. Insert the other end into the wall jack labeled DSL.
97-15300
DSL
Jack
POWER ETHERNET
DSL
HotWire RTU

9
2. Use an 8-pin cable for the Ethernet connection. Insert one end of the cable into the
jack labeled ETHERNET.
HUse a straight-through cable and connect the other end to an Ethernet hub, or
97-15303
Ethernet
Hub
Ethernet
Line
POWER ETHERNET DSL
HotWire RTU
Ethernet
Cable
HUse an Ethernet crossover cable and connect the other end to a PC with an
Ethernet Network Interface Card (NIC).
97-15303a
Ethernet
Line
POWER ETHERNET DSL
PC with Ethernet
Network Interface
Card
HotWire RTU
Ethernet
Crossover
Cable
For RTU cable pin assignments, refer to Cables & Connectors , page 14.

496-14952
97-15303a
Ethernet
Line
POWER ETHERNET DSL
HotWire RTU
Ferrite
Choke
10
3. Place the supplied ferrite
choke on the Ethernet
cable as closely as possible
to the RTU. Pass the
Ethernet cable through
the ferrite choke twice,
creating a loop as shown.
4. Close the two halves
around the cable and
snap the ferrite choke
shut. Press down on the
plastic latch to secure
the ferrite choke in place
around the cable.
5. Insert the power cord’s round end into the jack labeled POWER. Plug the
transformer into an AC outlet.
The following illustration displays examples of two power supply models.
97-15626
POWER ETHERNET DSL
HotWire RTU
Power
Jack
or
Transformer
or
The RTU hardware installation is now complete. When the power cord is installed, the
RTU goes through a power-on self-test.