Paradyne HotWire 5246 User manual

1
Hotwire5246 RTU Customer Premises
Installation Instructions
Document Number 5246-A2-GN10-30
August 2000
Contents
What Does the Hotwire 5246 RTU Do? 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the DSL Access Wiring 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Hotwire 5246 RTU 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Status LEDs 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Increasing the Number of End-User Systems 14. . . . . . . . . . . . . . . . . . . . . . . . .
Cables & Connectors 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Important Safety Instructions 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What Does the Hotwire 5246 RTU Do?
The Hotwire5246 RTU (Remote Termination Unit) is a component in the Hotwire
RADSL Access System and interoperates with the Hotwire 8540 DSL Card in the
DSLAM (Digital Subscriber Line Access Multiplexer) system. This system provides
high-speed Internet or corporate LAN access over traditional twisted-pair copper
telephone wiring.
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).
Optional POTS Splitter
An optional POTS (plain old telephone service) splitter can be installed to block out the
DSL signal and allow the POTS frequencies to pass through. At the customer
premises, the 5246 RTU and a telephone can function simultaneously over the same
pair of copper wires when either:
A Hotwire 5030 or 5038 POTS Splitter is installed near the demarcation point for all
telephones on the same POTS line as DSL,
or
A Hotwire 5038 Distributed POTS Filter is installed on each telephone on the same
POTS line as DSL.

2
NOTES:
In this document:
— End-user system is used to represent any host with an Ethernet connection
and DSL-based service.
— Service provider is used to represent any Internet Service Provider (ISP) or
remote LAN access provider.
DSL Access without a POTS Splitter
When the Hotwire 5246 RTU is installed without a POTS splitter, the DSL line is used
for data only and does not provide telephone services.
00-16725
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
End-user
Systems
DSL – Digital Subscriber Line RTU – Remote Termination Unit
NID – Network Interface Device New Wiring Connections
Service
Provider

3
DSL Access with a Hotwire 5030 or 5038 POTS Splitter
When a Hotwire POTS splitter is used at both ends of the local loop, wiring is
connected:
From the demarcation point to the CP POTS splitter, and
From the demarcation point to the DSL jack.
The Hotwire 5030 POTS splitter is designed for outdoor or indoor installation. The
Hotwire 5038 Distributed POTS Splitter is designed for indoor use only.
00-16726
Punchdown
Block or NID
DSL
Jack RTU
New Wiring Connections Existing Wiring (POTS)
Customer Premises (CP)
POTS/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
Service
Provider

4
DSL Access with a Hotwire 5038 Distributed POTS Splitter
When a Hotwire 5038 Distributed POTS Splitter is used, one 5038 Distributed POTS
Splitter is installed as a phone filter for each telephone on the same POTS line as DSL.
00-16727
RTU
Customer Premises (CP)
Central
Office
(CO)
Local Loop
POTS
Splitter To End-user
Systems
DSL – Digital Subscriber Line POTS – Plain Old Telephone Service
NID – Network Interface Device RTU – Remote Termination Unit
POTS
Splitter
POTS
Splitter
Service
Provider
Demarcation
Point
Punchdown
Block or NID
POTS/DSL
Optional
Product-Related Documents
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
5038-A2-GN10 Hotwire 5038 Distributed POTS Splitter Customer
Premises Installation Instructions
Contact your sales or service representative to order additional product documentation.
Paradyne documents are available on the World Wide Web at www.paradyne.com.
Select
Library → Technical Manuals → Hotwire DSL & MVL Systems.

5
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
Wiring and Cables Needed
The following wiring and standard connectors are used with this product:
Standard RJ11 wall jack for the DSL cabling.
DSL cabling: 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).
Ethernet cabling: 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 Hotwire 5246 RTU on page 9 for Ethernet cable details.
Refer to
Cables & Connectors on page 14 for standard pin numbers.

6
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 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.
!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 19.
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

7
3. 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.
In the following example, a NID is used without a POTS splitter. It includes an
existing POTS line and a second pair installed for DSL access.
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

97-15300a
RJ11 Wall Jack
or
8
Connecting to the DSL Access Wiring
The Hotwire 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.
97-15343-02
DSL
RJ11
Jack
Central
Office
Punchdown
Block or NID
Customer Premises
POTS/DSL
Local Loop
Demarcation Point DSL
Twisted-pair
Wiring
RTU
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.
3. Reconnect the DSL access pair
at the punchdown block or NID.
Refer to
Installing the DSL Access
Wiring
on page 6. Tighten both
terminal screws with a flat-blade
screwdriver.
The RJ11 6-pin jack uses the center two pins. For pin assignments, refer to
Cables &
Connectors
on page 14.

9
Installing the Hotwire 5246 RTU
Place the Hotwire 5246 RTU on a flat surface with clearance for the rear connectors.
Procedure
1. Use the supplied RJ11 6-pin interface 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.
97-15300-01
DSL
Jack
POWER ETHERNET
DSL
Hotwire RTU
If the Hotwire 5246 RTU is installed on the same line as POTS, a Hotwire 5038
Distributed POTS Splitter can be used as a phone filter. One 5038 Distributed
POTS splitter is installed as a phone filter for each telephone on the POTS/DSL
line, as shown below. To install the Hotwire 5038 Distributed POTS splitter, refer to
the
Hotwire 5038 Distributed POTS Splitter Customer Premises Installation
Instructions.
98-15813
Distributed
POTS Splitter
Line from
RJ11 Wall Jack
PHONE
LINE DSL
PHONE
LINE DSL
PHONE
LINE DSL
Line from
RJ11 Wall Jack
Distributed
POTS Splitter
Distributed
POTS Splitter
Customer
Premises (CP)
Hotwire
RTU

10
2. Use an 8-pin Ethernet cable for the Ethernet connection. Insert one end of the
cable into the jack labeled ETHERNET.
Use a straight-through cable and connect the other end to an Ethernet hub.
Do not connect to the optional Uplink connection with a straight-through cable
(requires an Ethernet crossover cable).
00-15303-02
Ethernet
Line
POWER ETHERNET DSL
Hotwire RTU
Ethernet
Straight Through
Cable
Ethernet
Hub
87654321
- or -
Use an Ethernet crossover cable and connect the other end to the Ethernet
Network Interface Card (NIC) installed in the PC.
00-15303b-01
PC with Ethernet
Network Interface
Card
Ethernet
Line
POWER ETHERNET DSL
Hotwire RTU
Ethernet
Crossover
Cable
For RTU cable pin assignments, refer to Cables & Connectors on page 14.

11
3. Insert the supplied power cord’s round end into the jack labeled POWER. Plug the
transformer into an AC outlet.
98-15836
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.
Power-On
When power is applied, the RTU performs self-diagnostics and the PWR LED is on.
The self-diagnostics includes a power-on self-test. During the power-on self-test,
all of the LEDs turn on for one second.
TST DSL ETHERNET ALMPWR
TM
97-15603
Power – green
Alarm – red
Test – yellow
Digital Subscriber Line – green
Ethernet Link – green
5246
Refer to Troubleshooting on page 13 for LED indications requiring action.

12
Status LEDs
All of the LEDs turn on and off during the power-on self-test. After a successful
self-test, the LEDs should appear as indicated in BOLD in the Condition column below.
LED Condition Status
PWR ON The RTU has power.
ALM OFF
ON
No active alarms.
An alarm condition exists.
TST OFF
ON
No active tests.
The TST LED is on during the power-on self-test and
during a test initiated by the service provider.
DSL Blinking
ON
OFF
The RTU is establishing the active DSL link. The LED
blinks on and off about five times per second.
The DSL link is ready to transmit and receive data.
The DSL link has not been established.
ETHERNET ON
OFF
The Ethernet connection is active.
No Ethernet device is detected.

13
Troubleshooting
LED Symptom Action
All LEDs are on. If the LEDs remain on for more than ten minutes, the RTU is
not functional. Unplug the unit and reapply power. If the ALM is
still on, contact the service provider.
ALM LED remains
on. The power-on self-test may have failed. Unplug the unit and reapply power. If the alarm LED is still on, contact the service
provider.
ALM and TST
LEDs are blinking. Firmware download may be in progress. If firmware download is not in progress or the LEDs remain on for more than ten
minutes, contact the service provider. Do not unplug the unit,
unless instructed to do so by the service provider.
DSL LED is off. Verify that the DSL cable is securely installed on both ends.
Unplug the unit and reapply power. If the problem continues,
contact the service provider.
DSL LED continues
to blink after the
power-on self-test.
The RTU is attempting to establish the DSL link or adjusting
the rate of the DSL line due to line conditions. If the DSL LED
continues to blink for more than ten minutes, contact the
service provider.
DSL LED is on and
there is no data
transmission.
The DSL link has been established but there is no data
transmission. Verify the Ethernet connection. If the problem
persists, contact the service provider.
DSL and Ethernet
LEDs are on and
there is no data
transmission.
The DSL link and the Ethernet link have been established but
there is no data transmission. If the problem continues, contact
the service provider.
Ethernet LED is off. Verify that the Ethernet cable is securely installed at both ends,
and at least one PC is connected and powered on.
Verify that the correct straight-through or crossover cable is
installed. Refer to Installing the Hotwire 5246 RTU on page 9.
PWR LED is off. Check that the power cord is securely installed on both ends.
If no LEDs are on, the power supply may be defective. Test the
outlet to verify power. If the problem persists, contact the
service provider.
If other LEDs are on, the PWR LED may be burned out. Unplug
the unit and reapply power; watch all LEDs during the
power-on self-test to verify that the PWR LED is functioning.
TST LED is on. A test initiated by the service provider may be active. Wait ten
minutes. If the TST LED does not go off, contact the service
provider.

98-15304-01
6-Pin
RJ11 Plug
DSL
Cable
Pin #1
Pin #6
14
Increasing the Number of End-User Systems
A single end-user system is attached to the Hotwire 5246 RTU by using an Ethernet
crossover cable. To increase the number of end-user systems, connect all end-user
systems to an Ethernet hub using a straight-through cable.
The Hotwire 5246 RTU can support up to 32 end-user systems. Verify any changes
with the service provider.
Cables & Connectors
Use standard twisted-pair CAT3 or better cables.
This section is reference information.
DSL interface connector uses
a 6-pin, non-keyed modular plug.
RJ11 6-Pin Connector
Pin # Function
1 & 2 Not used
3 DSL Ring
4DSL Tip
5 & 6 Not used

98-16055a
8-Pin
Plug
Ethernet
Cable
Pin #1
Pin #8
15
Ethernet interface connector uses an 8-pin, non-keyed modular plug. Use
shielded twisted-pair CAT5 or better cables.
— To connect to an Ethernet hub, use
the straight-through connection.
8-Pin Straight-Through Connection
Pin # Function
110BaseT TX D+
210BaseT TX D–
310BaseT RX D+
4 & 5 Not used
610BaseT RX D–
7 & 8 Not used
- or -
— To connect directly to a PC
with an Ethernet NIC card,
use an Ethernet Crossover cable.
10/100BaseT TX D+
10/100BaseT TX D–
10/100BaseT RX D+
Not Used
Not Used
10/100BaseT RX D–
Not Used
Not Used
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
10/100BaseT TX D+
10/100BaseT TX D–
10/100BaseT RX D+
Not Used
Not Used
10/100BaseT RX D–
Not Used
Not Used
Function Pin # FunctionPin #
8-Pin Ethernet Crossover Cable
99-16518
Pin #1/2 = Orange/White
Twisted Pair Pin #3/6 = Blue/White Twisted Pair

16
Optional RTU Wall Placement
The Hotwire 5246 RTU is designed for tabletop placement. The RTU can also be
mounted on a wall. To mount an RTU, you will need:
-Three slotted-head #6 self-threading screws with molly bolts
-Drill and 3/16″drill bit for the molly bolts
-Screwdriver
A template with the dimensions for the three screws is provided. See
RTU Hardware
Template
on page 17.
"Procedure
To mount the RTU:
1. Use a drill to install the plastic anchors (molly bolts).
2. Use a screwdriver to install the screws. Do not install the screws flush with the
wall. Leave enough clearance to hang the RTU housing from the screws.
Wall
Fasteners
98-16170
Hotwire
RTU

17
RTU Hardware Template
Front
(LEDs)
98-16171
5.43"
7.55"
To Bottom
Hole

18
Technical Specifications for Model 5246 RTU
Item Specification*
Height x Width x Depth 1.25″x 6.00″x 8.75″(3.18 cm x 15.24 cm x 22.23 cm)
Weight 1 lb. 1 oz. (0.48 kg)
Power
Class 2 Transformer normal
service input voltage range
Input: 100 VAC (+10%), 50 Hz;
120 VAC (+10%), 60 Hz; or
230 VAC (+10%), 50/60 Hz
Output: 18 VDC nominal at 0.8A
Approvals
FCC Part 15
CISPR 22
Safety Certifications
Class B Subpart B digital device
Class B
Refer to equipment’s label for approvals on product.
Physical Environment
Operating temperature
Storage temperature
Relative humidity
Shock and vibration
32°F to 104°F (0°C to 40°C)
–4°F to 158°F (–20°C to 70°C)
5% to 95% (noncondensing)
Withstands normal shipping and handling
Heat Dissipation 40.9 Btu/hr. (max.) at nominal input voltage
Interface Connectors
DSL Interface
Ethernet Type II Frame RJ11 6-pin
10BaseT 8-pin
*Technical Specifications subject to change without notification.

19
!Important Safety Instructions
1. Read and follow all warning notices and instructions marked on the product or
included in the manual.
2. Slots and openings in the cabinet are provided for ventilation. To ensure reliable
operation of the product and to protect it from overheating, these slots and
openings must not be blocked or covered.
3. Do not allow anything to rest on the power cord and do not locate the product
where persons will walk on the power cord.
4. Do not attempt to service this product yourself, as opening or removing covers
may expose you to dangerous high voltage points or other risks. Refer all servicing
to qualified service personnel.
5. General purpose cables are used with this product for connection to the network.
Special cables, which may be required by the regulatory inspection authority for
the installation site, are the responsibility of the customer. Use a UL Listed, CSA
certified, minimum No. 24 AWG line cord for connection to the Digital Subscriber
Line (DSL) network.
6. When installed in the final configuration, the product must comply with the
applicable Safety Standards and regulatory requirements of the country in which it
is installed. If necessary, consult with the appropriate regulatory agencies and
inspection authorities to ensure compliance.
7. A rare phenomenon can create a voltage potential between the earth grounds of
two or more buildings. If products installed in separate buildings are
interconnected, the voltage potential may cause a hazardous condition. Consult a
qualified electrical consultant to determine whether or not this phenomenon exists
and, if necessary, implement corrective action prior to interconnecting the products.
8. Input power to this product must be provided by one of the following: (1) a UL
Listed/CSA certified power source with a Class 2 or Limited Power Source (LPS)
output for use in North America, or (2) a certified transformer, with a Safety Extra
Low Voltage (SELV) output having a maximum 240 VA available, for use in the
country of installation.
9. In addition, since the equipment is to be used with telecommunications circuits,
take the following precautions:
— Never install telephone wiring during a lightning storm.
— Never install telephone jacks in wet locations unless the jack is specifically
designed for wet locations.
— Never touch uninsulated telephone wires or terminals unless the telephone
line has been disconnected at the network interface.
— Use caution when installing or modifying telephone lines.
— Avoid using a telephone (other than a cordless type) during an electrical
storm. There may be a remote risk of electric shock from lightning.
— Do not use the telephone to report a gas leak in the vicinity of the leak.

20
Declaration of Conformity
This Declaration of Conformity is made by Paradyne Corporation pursuant to Parts 2
and 15 of the Federal Communications Commission’s Rules. This compliance
information statement pertains to the following products:
Trade Name: Hotwire
Model Number: 5246-A3-200
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
The name, address, and telephone number of the responsible party is given below:
Paradyne Corporation
8545 126th Avenue North
Largo, FL 33773-1502
Phone: [phone]
The authority to operate this equipment is conditioned by the requirement that no
modifications will be made to the equipment unless the changes or modifications are
expressly approved by Paradyne Corporation.
Japan
Notices
This is a Class B product based on the standard of the Voluntary Control Council for
Interference from Information Technology Equipment (VCCI). If this is used near a radio or
television receiver in a domestic environment, it may cause radio interference. Install and
use the equipment according to the instruction manual.