Paradyne Hotwire 8784 User manual

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8784-A2-GZ40-20 February 2001
Hotwirer8784 TDM SDSL Termination Unit
with DSX-1 Interface
Installation Instructions
Document Number 8784-A2-GZ40-20
February 2001
Product Documentation Online
Complete documentation for this product is available at www.paradyne.com.
Select Library →Technical Manuals →Hotwire DSL & MVL Systems.
Select the following document:
8784-A2-GB20
Hotwire 8784 TDM SDSL Termination Unit, with DSX-1 Interface, User’s
Guide
To order a paper copy of a Paradyne document:
HWithin the U.S.A., call 1-800-PARADYNE (1-800-727-2396)
HOutside the U.S.A., call 1-727-530-8623
Hotwire 8784 TDM SDSL Termination Unit
The Hotwirer8784 Termination Unit is a circuit card assembly that contains two
Time Division Multiplexer Symmetric Digital Subscriber Line (TDM SDSL) ports
and a DSX-1 interface. When the Hotwire 8784 TDM SDSL Termination Unit is
used in a Hotwire 8600 or 8800 Series Digital Subscriber Line Access Multiplexer
(DSLAM) chassis, it transports up to 1544 kbps signals over traditional
twisted-pair telephone wiring.
!HANDLING PRECAUTIONS FOR
STATIC-SENSITIVE DEVICES
This product is designed to protect sensitive components from damage
due to electrostatic discharge (ESD) during normal operation. When
performing installation procedures, however, take proper static control
precautions to prevent damage to equipment. If you are not sure of the
proper static control precautions, contact your nearest sales or service
representative.
496-15104

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Installation Overview
Installation and configuration of the Hotwire 8784 TDM SDSL Termination Unit
consists of:
HInstalling the unit in the DSLAM.
HConnecting to the DTE.
HConnecting to an MDF.
HProviding initial unit identity information or changing existing identity
information.
HConfiguring your unit using the Configuration Edit menus.
Before you install the unit, read the Important Safety Instructions on page 17.
Be sure to register your warranty at www.paradyne.com/warranty.
Planning the Installation
Review the following list to help plan for the installation.
-Obtain the applicable cables; refer to Cables You Need on page 3.
-Make sure the Hotwire DSLAM chassis is installed and power is supplied to
the chassis.
-After the Hotwire 8784 Termination Unit is installed, there are configuration
procedures that must be performed before you can begin to use the
termination unit. Refer to the Hotwire 8784 TDM SDSL Unit, with DSX-1
Interface, User’s Guide for more detailed configuration procedures.
Cables You Need
The following standard cables are used with this product.
For the network connection:
HPlug-ended Telco 50-pin cable for connection from the Hotwire 8600 Series
DSLAM LINE port or one of the Hotwire 8800 Series DSLAM LINES ports to
the Main Distribution Frame (MDF) or other demarcation point.
For the DTE connection:
HThe 50-position plug to two 8-position unkeyed modular jacks. (Paradyne
Feature No. 8700-F1-505 can be used. Ignore Jacks 3 and 4.)
For more information refer to Connector Pin Assignments in the User’s Guide,
and the appropriate DSLAM installation document.

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Installing TDM SDSL Cards
A Hotwire 8784 TDM SDSL Termination Unit can be installed, removed, and
replaced without disrupting service to the other cards in the chassis.
"Procedure
To install the unit:
1. Determine in which slot the unit will be installed. Verify that cards in adjacent
slots have been fastened.
2. Remove the filler plate from the installation slot and store for possible later
use.
3. Insert the unit:
—For a Hotwire 8600 Series DSLAM chassis – Hold the unit horizontally,
with the component side facing up, and insert it into the left and right card
guides.
—For a Hotwire 8800 Series DSLAM chassis –Hold the unit vertically,
with the component side facing right, and insert it into the top and bottom
card guides.
4. Slide the unit into the slot until the power and network connectors seat firmly
in the mating connectors on the backplane.
CAUTION:
Do not force the unit into the slot. This could damage the backplane
connectors. If the card does not seat properly, remove the card and
reinstall it. If it still does not seat properly, call your service
representative.
The termination unit performs a power-on self-test. All of the LEDs turn ON
and OFF briefly. When the self-test is completed successfully, the SYSTEM
OK LED begins to pulse.
5. If the LED is not pulsing, refer to Messages and Troubleshooting in the User’s
Guide.
6. Secure the unit by fastening the screws at each end of the faceplate.

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Connecting to the DTE
Connection to the two ports of the Hotwire 8784 TDM SDSL Termination Unit is
through the 50-pin interface connector on its faceplate. Refer to Connector Pin
Assignments in the User’s Guide.
"Procedure
To connect the Hotwire 8784 Termination Unit to your DTE:
1. Connect the 50-position connector of the cable to the connector on the
faceplate of the unit. Align one end of the cable connector with the card
connector, then push on the cable connector until it seats.
2. Feed the cable through the Cable Guide if it is installed. When all cables are
installed, anchor them with cable ties to the rack, DSLAM, or Cable Guide.
3. Connect the two terminating connectors to your DTE or DTEs.
Connecting to an MDF
You can connect the Hotwire DSLAM chassis containing the Hotwire 8784 TDM
SDSL Termination Unit to an MDF or other demarcation point. Do not connect it
to a POTS splitter.
"Procedure
To connect the Hotwire DSLAM chassis containing the unit to an MDF:
1. Plug the Telco 50-pin cable into the appropriate LINE port on the chassis.
2. Replace the longer Telco cable captive screw with a shorter connector
captive screw, which is provided with the Hotwire DSLAM chassis.
3. Insert a cable tie (provided with Hotwire DSLAM chassis) through the tie
mount to hold the Telco 50-pin connector in place. If more than one Telco
cable is being connected, span the two or three connectors.
4. Make sure the other end is connected to the appropriate MDF or demarcation
point.
Refer to Connector Pin Assignments in the User’s Guide for pinouts.
NOTE:
If you are connecting the Telco 25-pair, 50-pin cable to an MDF, a converter
may be necessary for terminating the other end of the cable on a punchdown
block before cross-connecting to an MDF.

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8784-A2-GZ40-20 February 2001
Front Panel LEDs
The following table describes the meaning and states of the LEDs on the
Hotwire 8784 TDM SDSL Termination Unit’s faceplate.
Type LED LED is . . .* Indicating . . .
SYSTEM OK
(Green) On
Off
Slow Cycling
Pulsing
Unit failure; system processing has stopped.
No power to card.
Unit is in minimum mode and a download is
required.
Normal operation.
Alrm
(Amber) On
Off
Unit failure, or Power-On Self-Test (POST)
has failed.
No alarms.
Test
(Amber) On
Slow cycling
Off
Loopback test or 511 test pattern in progress.
POST in progress.
No tests.
DSX-1 1, 2
(Green) On
Slow cycling
Fast cycling
Off
Recoverable signal present on the DSX-1
network.
Yellow Alarm Indication (RAI) present.
An OOF, LOF, EER, or AIS condition exists.
No signal on the port.
DSL PORT 1, 2
(Green) On
Slow cycling
Fast cycling
Off
DSL link is up.
DSL training in progress.
OOF condition.
DSL link is down.
* Slow Cycling: LED turns off and on in equal duration once per second.
Fast Cycling: LED turns off and on in equal duration 5 times per second.
Pulsing: LED turns off momentarily once per second.
TDM
SDSL
8784
SYSTEM
OKAlrm
Test
12
12
DSX-1
DSL PORT
00-16144a-01

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Logging In to the Hotwire DSLAM
You can log in to the Hotwire DSLAM system using either a local VT100-
compatible terminal or a remote Telnet connection.
After you enter your user ID and password, the system displays the Hotwire
Chassis Main Menu. See your Management Communications Controller (MCC)
documentation for information about selecting the unit from the MCC card
selection screen.
Asynchronous Terminal Interface Menu
The following illustration shows the paths to the Hotwire 8784 TDM SDSL
Termination Unit’s various ATI screens.
Main
Status Test
System and
Test Status Performance Statistics Display LEDs Identity
Network
Error
Statistics
Network
Performance
Statistics
Configuration Control
Default
Factory
Configuration
Configuration
Loader
Current
Configuration
Change
Identity
Administer
Logins
Download
Code Apply
Download
Reset
Autorate
Network &
DSX-1Tests Device Tests Abort All Tests
01-15708-03
DSX-1
Statistics
Reset
Device
Current
Network
Performance
Network DSX-1 Copy
Ports System Options Management and
Communication
Telnet
Session SNMP NMS Security
General SNMP
Management SNMP
Traps

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Entering Identity Information
After accessing your unit for the first time, use the Change Identity screen to
determine SNMP administrative system information that will be displayed on the
Identity screen of the Status branch. To access the Card Identity screen, follow
this menu selection sequence:
Main Menu →Control →Change Identity
Configuring the TDM SDSL Termination Unit
Configuration option settings determine how the unit operates. Use the
Configuration branch of the Hotwire 8784 TDM SDSL Termination Unit’s menu to
display or change configuration option settings.
The unit is shipped with factory settings in the Default Factory Configuration area.
If the factory default settings do not support your network’s configuration,
customize the configuration options for your application.

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Accessing and Displaying Configuration Options
To display the configuration options, you must first load a configuration option set
into the edit area.
To load a configuration option set into the configuration edit area, follow this
menu selection sequence:
Main Menu →Configuration (Load Configuration From)
main/configuration Hotwire
Slot: 4 Model: 8784
LOAD CONFIGURATION FROM:
Current Configuration
Configuration Loader
Default Factory Configuration
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu MainMenu Exit
Î
ÎÎ
Make a selection by placing the cursor at your choice and pressing Enter.
If you select . . . Then . . .
Current
Configuration The selected configuration option set is loaded and the Configuration Edit/Display menu screen appears.
Configuration
Loader The Configuration Loader screen is displayed allowing you to upload or download configurations from a TFTP server.
Default Factory
Configuration The default factory configuration is loaded and the Configuration Edit/Display menu screen appears.

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8784-A2-GZ40-20 February 2001
Configuration Edit/Display
The Configuration Edit/Display screen is displayed when the current, customer, or
default configuration is loaded and allows groups of configuration options to be
displayed. To access the Configuration Edit/Display screen, follow this menu
selection sequence:
Main Menu →Configuration →Current Configuration
–or –
Main Menu →Configuration →Default Factory Configuration
Î
Î
ÎÎ
ÎÎ
main/config/edit Hotwire
Slot: 4 Model: 8784
CONFIGURATION EDIT/DISPLAY
Network
DSX-1
Copy Ports
System Options
Management and Communication
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu MainMenu Exit
Save
Select . . . To Access the . . . To Configure the . . .
Network Network Interface Options, Table 1 DSL network interface
Ports 1–2.
DSX-1 DSX-1 Interface Options, Table 2 DSX-1 interface Ports 1–2.
Copy Ports Copy Ports Options, Table 3 DSL network and DSX-1
interface ports by copying
options from port to port.
System
Options System Options, Table 4 General system options of the unit.
Management
and
Communication
HTelnet Session Options, Table 5
HGeneral SNMP Management Options,
Table 6
HSNMP NMS Security Options, Table 7
HSNMP Traps Options, Table 8
Management support of the
unit through SNMP and
Telnet.
NOTE:
The SNMP NMS Security Options screen is not available in IP Conservative mode.

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Table 1. Network Interface Options
Margin Threshold
Possible Settings: –5db, –4db, –3db, –2db, –1db, 0db, 1db,2db,3db,4db,5db,6db,
7db,8db,9db,10db
Default Setting: 0db
Determines the level, expressed in decibels, at which a signal-to-noise margin condition
is recognized.
Excessive Error Rate Threshold
Possible Settings: 1E–4,1E–5,1E–6,1E–7,1E–8,1E–9
Default Setting: 1E–6
Determines the error rate at which an excessive error rate (EER) condition is
recognized. The rate is the ratio of the number of CRC errors to the number of bits
received in a certain period.
AutoRate
Possible Settings: Enable, Disable
Default Setting: Disable
Determines whether the unit automatically adjusts to the best line rate for conditions, or
is fixed at the rate in the DSL Line Rate field. The automatically set rate cannot exceed
DSL Line Rate.
HAutoRate is only available when the unit is configured as an LTU.
DSL Line Rate
Possible Settings: 400, 528, 784, 1040, 1552
Default Setting: 1552
Determines the fixed line rate of the LTU when AutoRate is disabled, and the maximum
rate to which the unit can be set if AutoRate is enabled.
HDSL Line Rate is only available when the unit is configured as an LTU.
Peer IP Address
Possible Settings: 001.000.000.000 –223.255.255.255, Clear
Default Setting: 000.000.000.000
Specifies the peer IP address providing the remote management link on the DSL loop.
The Peer IP Address is only available when the unit is configured as an LTU.
HPeer IP Address is only available when the unit is configured as an LTU and the
unit is not running in IP Conservative mode.
Circuit Identifier
Possible Settings: [ASCII Text], Clear
Default Setting: [null string]
Uniquely identifies the circuit number of the transmission vendor’s DSL line for
troubleshooting purposes.