Paradyne Hotwire 7974 User manual

1
Hotwire®TDM SDSL Standalone Termination Units
Models 7974-A2, 7975-A2, and 7976-A2
Installation Instructions
Document Number 7900-A2-GN11-20
December 2001
Product Documentation Online
Complete documentation for this product is available at www.paradyne.com. Select
Library
→
Technical Manuals
→
Hotwire DSL Systems.
Select the following document:
7900-A2-GB21
Hotwire TDM SDSL Standalone Termination Units,
Models 7974-A2, 7975-A2, 7976-A2, User’s Guide
To order a paper copy of a Paradyne document:

Within the U.S.A., call 1-800-PARADYNE (1-800-727-2396)

Outside the U.S.A., call 1-727-530-8623
Be sure to register your warranty at www.paradyne.com/warranty.
Package Checklist
Verify that your package contains:
❑Hotwire®TDM SDSL Standalone Termination Unit
❑24 VDC power transformer with separate power cable
–or –
6-conductor direct connection DC power cable
❑8-position-modular-to-8-position-modular network cable
❑DB9-to-8-position modular terminal cable
Notify your sales representative if anything is missing.

2
Installation Overview
Installation and configuration of the Hotwire 797x 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 unit, read the
Important Safety Instructions on page 35.
See the User’s Guide for additional information about:
 Configuration Options
 Messages and Troubleshooting
 Technical Specifications
 Connectors, Cables, and Pin Assignments
Connecting Power to the Unit
If your package includes a power transformer:
1. Plug the power cable into an AC outlet having a nominal voltage rating between
100–240 VAC.
2. Connect the power cable to the transformer.
3. Connect the output cable of the transformer to the connector marked POWER on
the rear panel.
If your package includes a direct-connection DC power cable:
Connect the unit to an external +24 or –48 VDC SELV (Safety Extra Low Voltage) power
source as described in the following section.

3
Connecting the Unit to an Optional External +24 or –48 VDC Power
Source
Using the DC power cable, the unit is capable of operating on a +24 VDC or –48 VDC
SELV power supply.
Procedure
To use the DC power cable for +24 VDC:
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 unit.
Procedure
To use the DC power cable for –48 VDC:
1. Connect the green wire to a suitable ground.
2. Connect the orange wire to the –48 VDC source.
3. Connect the black wire to the return.
4. Cut the red, white, and blue wires off at the outer insulation.
5. Plug the power connector into the unit.
Power Cable Pinouts
Pin Number Wire Color Signal
1Black–48 VDC Return
2Red–48 VDC Return
3 Green Ground
4 White +24 VDC Return
5 Orange –48 VDC
+24 VDC
6 Blue No Connection
99-16291
23
546
1

4
Connecting to the Network
Procedure
To connect your unit to the network:
1. Connect one end of the supplied 8-position-modular-to-8-position-modular 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 unit. Use only Cat 5 twisted-pair network cable.
Connecting to a DTE
See
Connectors, Cables, and Pin Assignments
in the User’s Guide for specifications of
the connectors and cables.
Model DTE Connection
7974 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 The synchronous interface is a 25-pin EIA-530-Ainterface. Depending onthe
cable used, the interface can be adapted to an X.21, RS-449, or V.35
interface.
7976 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.

5
LEDs
The following table contains a description of the LEDs on the Hotwire 797x Standalone
Termination Unit’s front panel.
Label Color LED is . . .*
* 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.
Indicating . . .
POWER Green On
Off
Slow Cycling
Normal operation.
No power to the unit.
Unit is in minimum mode and a download is
required.
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.
DSX-1: No signal on DTE port.
Sync DTE:Configured control leads (DTR/RTS)
are not asserted.
G.703: 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.

6
Connecting to a System Terminal
An optional system maintenance terminal may be attached to your Hotwire 797x
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 supplied 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.
main Hotwire
Model 797x
MAIN MENU
Status
Test
Configuration
Control
-----------------------------------------------------------------------------
Ctrl-a to access these functions Exit

7
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
01-16496-03
Reset
Device
Network
General SNMP
Management SNMP NMS Security
Communication
Protocol
Telnet
Session SNMP Traps
7974: DSX-1 Statistics
7975: (Not Applicable)
7976: G.703 Statistics
7974: Network and DSX-1 Tests
7975: Network Tests
7976: Network and G.703 Tests
7974: (Not Applicable)
7975: Sync Data Port Tests
7976: (Not Applicable)
7974: DSX-1
7975: Sync Port
7976: G.703
Current
Network
Performance

8
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. See the User’s Guide for detailed information about the
configuration options and switch settings.
Configuring the Unit Using the Configuration Menus
Use the Configuration menu to select, display, or change configuration option settings.
NOTE:
The Hotwire 797x Standalone Termination Unit is shipped configured as an NTU. If
using this unit as an NTU, the configuration options may not need to be altered.
The unit has two sets of configuration option settings:
 The Current Configuration: The unit’s active set of configuration options.
 The Default Factory Configuration: A read-only configuration area containing the
factory default configuration options.

9
Displaying Configuration Options
To display configuration options, you must first load a configuration into the edit area. To
load aconfiguration 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.
Configuration Edit/Display
The Configuration Edit/Display screen is displayed when the current 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
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.
main/config/edit
Model: 797x
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

10
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 –Model
7974 (Table 2)
Synchronous Data Port Options –
Model 7975 (Table 3)
G.703 Interface Options –Model
7976 (Table 4)
DSX-1 interface
(Model 7974)
Synchronous DTE interface
(Model 7975)
G.703 interface
(Model 7976)
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 supportof the
unit through SNMP and
Telnet.