Paradyne Hotwire 7974 User manual

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Hotwire7974, 7975, 7976, 7984, 7985, and 7986
Standalone Termination Unit
Installation Instructions
Document Number 7970-A2-GN10-00
August 1999
Product Documentation on the World Wide Web
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Select the following document:
7970-A2-GB20
Hotwire 7974, 7975, 7976, 7984, 7985, and 7986 Standalone Termination Unit
User’s Guide
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Installation Overview
Installation and configuration of the Hotwire79xx Standalone Termination Unit
consists of:
Connecting power to the unit.
Connecting to the network.
Connecting to a DTE.
Connecting a system terminal.
Providing initial unit identity information or changing existing identity information.
Configuring your unit using the Configuration Edit menus.
Before you install the Hotwire 79xx Standalone Termination Unit, read the
Important
Safety Instructions
on page 33.
See the User’s Guide for additional information about:
Configuration options
Messages and troubleshooting
Technical specifications
Cables, connectors, and pin assignments
Connecting Power to the Unit
If your package includes a power pack: Plug the power pack into an ac outlet having
a nominal voltage rating between 100–240 Vac. Connect the output cable of the power
pack to the connector marked POWER on the rear panel.
If your package includes a direct-connection +24 Vdc power cable:
Connect the
unit to an external +24 Vdc SELV (Safety Extra Low Voltage) power source as
described in
Connecting the Unit to an Optional External +24 Vdc Power Source .
If you will use a –48 Vdc power supply: Connect the unit to an external –48 Vdc
SELV power source as described in the documentation shipped with the power supply
and power cable.

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Connecting the Unit to an Optional External +24 Vdc Power Source
Using the dc power cable, the Hotwire 79xx Standalone Termination Unit is capable of
operating on a +24 Vdc SELV power supply.
Procedure
To use the dc power cable:
1. Connect the green wire to a suitable ground.
2. Connect the orange wire to the +24 Vdc source.
3. Connect the white wire to the return.
4. Cut the black, red, and blue wires off at the outer insulation.
5. Plug the power connector into the 79xx Standalone Termination Unit.
1
2
3
4
5
6
X
X
Ground
RTN
+24 Vdc
X
Black
Red
Green
White
Orange
Blue
99-14158-02
+24 Vdc Power Supply Pinouts

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Connecting to the Network
Procedure
To connect your unit to the network:
1. Connect one end of the supplied network cable into the rear panel DSL jack.
2. Connect the other end to your DSL network interface.
NOTE:
Do not use a flat VF network cable as this may severely degrade the
performance of the termination unit. Use only Cat 5 twisted-pair network cable.
Connecting to a DTE
Model DTE Connection
7974,
7984 The DSX-1 interface is an RJ48C, 8-position, unkeyed modular connector. An RJ48C-to-DB15 T1 network interface adapter cable is available from
Paradyne.
7975,
7985 The synchronous interface is a 25-pin EIA-530-A interface. Depending on the cable used, the interface can be adapted to an X.21, RS-449, or V.35
interface.
7976,
7986 The G.703 interface is either two BNC connectors (Transmit and Receive) for a 75-ohm unbalanced interface or an RJ48C, 8-position, unkeyed
modular connector for a 120-ohm balanced interface.
See Cables and Pin Assignments in the User’s Guide for specifications of the
connectors and cables.
Ferrite Choke (Model 7975 Only)
Procedure
To install the ferrite choke onto the DTE cable:
1. Open the ferrite choke and place it around the cable as close to the cable
connector as possible.
2. Close the two halves around the cable and snap the choke shut, pressing down on
the plastic latch to secure it in place.
3. Add a tie wrap (not included) as shown to prevent the ferrite choke from slipping
down the cable.
All ferrite chokes that are supplied must be installed following these instructions to
ensure compliance with FCC Part 15, VCCI, and CISPR22 rules.

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Hotwire 79xx Standalone Termination Unit LEDs
The following table contains a description of the LEDs on the Hotwire 79xx Standalone
Termination Unit front panel.
Label Color LED is . . .* Indicating . . .
POWER Green On
Off
Slow Cycling
Pulsing
Unit failure.
No power to the unit.
Unit is in minimum mode and a download is
required.
Normal Operation.
ALARM Red On
Off
Device failure, or self-test has failed.
Self-test passed.
TEST Yellow On
Off
Slow Cycling
Loopback test or 511 test pattern in progress.
No tests in progress.
Self-test in progress.
DSL Green On
Off
Slow Cycling
Fast Cycling
DSL link is up.
The DSL link is down.
DSL training in progress.
An OOF condition.
DSX-1
DTE
G.703
Green On
Off
Slow Cycling
Fast Cycling
DTE port is operational.
No signal on DTE port.
DSX-1: Yellow Alarm Indication received.
Sync DTE: Not applicable.
G.703: Remote Alarm Indication received.
DSX-1: OOF, LOF, EER, or AIS condition.
Sync DTE: Not applicable.
G.703: OOF, LOF, EER, or AIS condition.
*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.

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Connecting to a System Terminal
An optional system maintenance terminal may be attached to your Hotwire
79xx Standalone Termination Unit through the modular jack on the rear panel. The
system maintenance terminal allows you to view the status of the unit and change
configuration options. The terminal must be a VT100-compatible terminal or a PC
running terminal emulation software.
Procedure
To connect your unit to a system terminal:
1. Connect the 9-pin end of the terminal cable into a COM port on your PC.
2. Plug the other end into the modular jack on the rear panel.
3. Set the communication parameters on your PC or terminal to:
— 9600 baud
— 8 bit characters
— no parity
— 1 stop bit
— no flow control
Press Enter from your terminal or PC to activate the Main Menu for the attached unit.
The system runs diagnostics and status checks. After a few moments, the Main Menu
or Logon screen appears on your terminal.
ÎÎ
Î
main Hotwire
Model 79xx
MAIN MENU
Status
Test
Configuration
Control
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions Exit

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Asynchronous Terminal Interface Menu
The following illustration shows the menu paths to the different terminal screens.
Main
Status Test
System and
Test Status Performance Statistics Display LEDs Identity
Network
Error
StatisticsNetwork
Performance
Statistics
Configuration Control
Factory
Config
Configuration
Loader
Current Configuration
Edit/Display
System
Options Communication Port Management and
Communication
Change
Identity
Administer
Logins
Download
Code Apply
Download
Reset
AutoRate
Device
Tests
Abort
All
Tests
99-16496
Reset
Device
Network
General SNMP
Management SNMP NMS Security
Communication
Protocol
Telnet
Session SNMP Traps
7974, 7984:DSX-1 Statistics
7975, 7985:(Not Applicable)
7976, 7986:G.703 Statistics
7974, 7984:Network and DSX-1Tests
7975, 7985:NetworkTests
7976, 7986:Network and G.703Tests
7974, 7984:(Not Applicable)
7975, 7985:Sync Data PortTests
7976, 7986:(Not Applicable)
7974, 7984:DSX-1
7975, 7985:Sync Ports
7976, 7986:G.703

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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 Identity screen, follow this menu selection sequence:
Main Menu → Control → Change Identity
Selecting a Configuration Method
You can make configuration changes either through a VT100-compatible terminal and
the unit’s Configuration menus or by manually changing switches on the board. The
unit is shipped with the switchpacks disabled to allow settings to be made through the
Configuration menus. To use the switchpacks, see
Configuring the Unit Using the
Internal Switches
on page 23.
Configuring the Unit Using the Configuration Menus
Use the Configuration menu to select, display, or change configuration option settings.
NOTE:
The 79xx Standalone Termination Unit is shipped configured as an NTU. If you are
using this unit as an NTU, the configuration options may not need to be altered.
The 79xx Standalone Termination Unit has two sets of configuration option settings:
The Current Configuration: The 79xx Standalone Termination Unit’s active set of
configuration options.
The Default Factory Configuration: A read-only configuration area containing the
factory default configuration options.
Displaying Configuration Options
To display configuration options, you must first load a configuration 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)
Make a selection by placing the cursor at your choice and pressing Enter.

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If you select . . . Then . . .
Current
Configuration The selected configuration option set is loaded and the Configuration Edit/Display menu screen appears.
Default Factory
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.
Configuration Edit/Display
The Configuration Edit/Display screen is displayed when the current, customer, or
default configuration is loaded. To access the Configuration Edit/Display screen, follow
this menu selection sequence:
Main Menu → Configuration → Current Configuration
– or –
Main Menu → Configuration → Default Factory Configuration
ÎÎ
Î
main/config/edit Hotwire
Model: 79xx
CONFIGURATION EDIT/DISPLAY
Network
DSX-1 | SYNC Port | G.703
System Options
Communication Port
Management and Communication
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu MainMenu Exit
Save

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Select . . . To Access the . . . To Configure the . . .
Network Network Interface Options, Table 1 DSL network interface on
the unit.
DSX-1
SYNC Port
G.703
DSX-1 Interface Options, Table 2
Synchronous Data Port Options,
Table 3
G.703 Interface Options, Table 4
DSX-1 interface
(Models 7974, 7984);
Synchronous DTE interface
(Model 7975, 7985);
G.703 interface
(Models 7976, 7986)
System
Options System Options, Table 5 General system options of the unit.
Communication
Port Communication Port Options, Table 6 Unit’s COM port options.
Management
and
Communication
Telnet Session Options, Table 7
Communication Protocol Options,
Table 8
General SNMP Management
Options, Table 9
SNMP NMS Security Options,
Table 10
SNMP Traps Options, Table 11
Management support of the
unit through SNMP and
Telnet.
Table 1. Network Interface Options (1 of 2)
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 alarm
condition is reported.
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.