Paradyne 7975, Hotwire 7975-A1 Installation Instructions Manual

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Page 1

Hotwire 7975-A1 M/SDSL Standalone Termination Unit

Installation Instructions

Document Number 7975-A2-GZ41-00

March 1999

Product Documentation on the World Wide Web

We provide complete product documentation online. This lets you search the documentation for specific topics and print only what you need, reducing the waste of surplus printing. It also helps us maintain competitive prices for our products.

Complete documentation for this product is available at www.paradyne.com. Select

Select the following document:

To request a paper copy of a Paradyne document:

Library → Technical Manuals → Hotwire DSL & MVL Systems.

7975-A2-GB20

Hotwire 7975 Standalone Termination Unit User’s Guide

 Within the U.S.A., call 1-800-PARADYNE (1-800-727-2396)  Outside the U.S.A., call 1-727-530-8623

Installation Overview

Installation and configuration of the Hotwire 7975 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 internal switchpacks or using the Configuration

Edit menus.

Before you install the Hotwire 7975 Standalone Termination Unit, read the

Important Safety Instructions

Be sure to register your warranty at www.paradyne.com. Select

Support → Warranty Registration.

on page 22.

Service &

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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:

unit to an external +24 Vdc power source as described in

an Optional External +24 Vdc Power Source If you will use a –48 Vdc power supply:

Connect the unit to an external –48 Vdc power source as described in the documentation shipped with the power supply and power cable.

Connecting the Unit to an Optional External +24 Vdc Power Source

Use the following procedures only if you want to use the +24 Vdc power cable.

Using the dc power cable, the Hotwire 7975 Standalone Termination Unit is capable of operating on a +24 Vdc power supply.

 Procedure

To use the dc power cable:

1. Connect the green wire to a suitable ground.

Connect the

Connecting the Unit to

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 Termination Unit.

1 2 3 4 5 6

Black

Red

Green

White

Orange

Blue

X X

Ground RTN

+24 Vdc X

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. Connect the other end to your DSL network interface.

NOTE:

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 the DTE

The Hotwire 7975 Standalone Termination Unit connects to Data Terminal Equipment (DTE) using a 25-pin EIA-530-A interface. Depending on the cable used, the interface can be adapted to an X.21, RS449, or V.35 interface. See the User’s Guide for more information.

Ferrite Choke



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.

Ferrite Choke

Connector

End

Tie

Wrap

Plastic

Latch

97-14820-02

CAUTION:

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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Connecting to a System Terminal

An optional system maintenance terminal may be attached to your Hotwire 7975 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.

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

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Network Configuration

The following figure shows several configurations including a network application using a 4-port Hotwire 8775 M/SDSL Termination Unit in a central office (CO). In this configuration, a frame relay switch and a router are connected, through the termination unit, to partner units supporting a host or router, and frame relay encapsulated or unframed data. The figure also shows a possible standalone-to-standalone configuration.

V.35

CO Site

Frame

Relay

Switch

Router

V.35

CO Site

LTU

7975 7975

V.35 V.35

V.35

8775 T ermination Unit

in 8600 DSLAM

2.048 Mb over

SDSL

Premises (CP)

7975

V.35

7975

V.35

7975

Customer

E1 Host (Frame Relay Encapsulated

Data)

Router (Frame Relay Encapsulated

Router

Customer

Premises

NTU

Data)

98-15938

Sample M/SDSL Configurations

In a DSLAM-to-standalone configuration:

 The devices synchronize without altering factory defaults, since the CO unit

defaults to LTU mode, and the CP unit defaults to NTU mode.

In a standalone-to-standalone configuration:

 One unit must be changed to run in LTU mode, since standalone units have

a factory default setting of NTU mode.

In both cases the clocking source may have to be altered depending on network requirements.

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Choosing a Configuration Mode

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 comes configured to allow settings to be made through the Configuration menus.

Configuring the Unit Using the Configuration Menus

You can use the Configuration menu branch of the unit to display or change configuration option settings.

The Hotwire 7975 Standalone Termination Unit has two sets of configuration option settings.

 The Current Configuration (the 7975 Standalone Termination Unit’s active set

of configuration options)

 The Default Factory Configuration (a read-only configuration area containing

the factory default configuration options)

If the factory default settings do not support your network’s configuration, you can customize the configuration options for your application. 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.

If you select . . . Then . . .

Current Configuration

Default Factory Configuration

Configuration Loader

The selected configuration option set is loaded and the Configuration Edit/Display menu screen appears.

The Configuration Loader screen is displayed allowing you to upload or download configurations from a TFTP server.

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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 →Default Factory Configuration

main/config/edit Hotwire

CONFIGURATION EDIT/DISPLAY

Network SYNC Port System Options Communication Port Management and Communication

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Ctrl-a to access these functions, ESC for previous menu M

ave

Model: 7975

ainMenu Exit

Select . . . To Access the . . . To Configure the . . .

Network Network Interface Options, Table 1 DSL network interfaces on

SYNC Port Synchronous Data Port Options,

Table 2

System Options System Options, Table 3 General system options of

the unit. Synchronous DTE interface

Ports.

the unit.

Communication Port

Management and Communication

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Communication Port, Table 4 Unit’s COM port options.

 Telnet Session Options, Table 5  Communication Protocol Options,

Table 6

 General SNMP Management

Management support of the unit through SNMP and Telnet.

Options, Table 7

 SNMP NMS Security Options,

Table 8

 SNMP Traps Options, Table 9

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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: Enable

Specifies whether the DSL line will automatically train up to the best rate or be user selectable. This option is only available when the standalone unit is configured as an L TU.

DSL Line Rate

Possible Settings: 144, 272, 400, 528, 784, 1040, 1552 (2 Mbps unit only), Default Setting: 144

Specifies the DSL line rate of the unit. This option is only available when the standalone unit is configured as an L TU and AutoRate is disabled (unit is in fixed rate).

Peer IP Address

Possible Settings: 000.000.000.001 – 223.255.255.255, Clear Default Setting: 000.000.000.000

Specifies the peer IP address for the remote management providing the remote management link on the DSL loop. This option is only available when the standalone unit is configured as an L TU.

Circuit Identifier

Possible Settings: [ASCII Text], Clear Default Setting: [blank]

Uniquely identifies the circuit number of the transmission vendor’s DSL line for troubleshooting purposes.

2064 (2 Mbps unit only)

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Table 2. Synchr onous Data Port Options (1 of 2)

Port Type

Possible Settings: E530A, V.35, RS449, X.21 Default Setting: E530A

Determines the port type for the data port.

Payload Rate Possible Settings: 64, 128, 192, 256, 320, 384, 448, 512, 576, 640, 704, 768, 832, 896,

960, 1024, 1088, 1152, 1216, 1280, 1344, 1408, 1472, 1536 , 1600, 1664, 1728, 1792, 1856, 1920, 1984, 2048

Default Setting: 128

NOTE: Payload rates of 1088 kbps and higher pertain only to the 2 Mbps

Specifies the payload rate of the port. This option is not displayed on the unit when AutoRate is enabled or the unit is configured as an NTU. The L TU configures the payload rate for the NTU when AutoRate is disabled.

Transmit Clock Source

Possible Settings: Internal, External Default Setting: Internal

Specifies whether the transmitted data for the synchronous data port is clocked using an internal clock provided by the LTU (synchronized to the clock source specified by the clock source configuration option) or an external clock provided by the DTE connected to the synchronous data port. If an external clock is used, it must be synchronized to the same clock source as the LTU.

termination unit.

Invert Transmit Clock

Possible Settings: Disable, Enable Default Setting: Disable

Specifies whether the clock supplied by the 7975 Termination Unit on the TXC interchange circuit DB (CCITT 114) is phase inverted with respect to the Transmitted Data interchange circuit BA (CCITT 103). This configuration option is useful when long cable lengths between the 7975 Termination Unit and the DTE are causing data errors.

Send All Ones on Data Port Not Ready

Possible Settings: Both, Disable, DTR, RTS Default Setting: Both

Specifies the conditions on the data port that determine when valid data is not being sent from the DTE. When this condition is detected, all ones are sent to the network.

Action on Network LOS Alarm

Possible Settings: Halt, None Default Setting: Halt

Specifies the action taken on the synchronous data port when an LOS (Loss Of Signal) alarm is received on the network interface.

Network Initiated Data Channel Loopback

Possible Settings: Disable, Enable Default Setting: Disable

Allows the initiation and termination of a Data Channel Loopback (DCLB) by the receipt of a DCLB-actuate sequence or DCLB-release sequence from the network or far-end device.

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Table 2. Synchr onous Data Port Options (2 of 2)

Port (DTE) Initiated Loopbacks

Possible Settings: Disable, DTLB, DCLB, Both Default Setting: Disable

Allows the initiation and termination of a local Data Terminal Loopback (DTLB) or remote Data Channel Loopback (DCLB) by the DTE connected to this port. (DTLB is equivalent to a V.54 loop 3, and DCLB is equivalent to a V.54 loop 2.) Control of these loopbacks is through the DTE interchange circuits as specified by the V.54 standard.

ElasticStore

Possible Settings: Disable, Enable Default Setting: Enable

Used to enable or disable a first in first out (FIFO) buffer circuit for the incoming external clock. This circuit is used to compensate for the differences between the frequencies of the data clocks for the two units in the circuit. This option only applies if the unit is set for external timing.

Table 3. System Options

DSL Mode

Possible Settings: LTU, NTU Default Setting: NTU

Controls whether the unit is configured as a control unit or tributary unit.

NOTE: Changing this option will reset the unit.

T est Timeout

Possible Settings: Enable, Disable Default Setting: Enable

Allows user-initiated tests to end automatically . The feature should be enabled when the unit is remotely managed, so that control can be regained after a test is accidentally executed.

Test Duration (min)

Possible Settings: 1–120 Default Setting: 10

Number of minutes for a test to be active before automatically ending.

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Table 4. Communication Port (1 of 2)

Port Use

Possible Settings: T erminal , Net Link Default Setting: T erminal

Specifies how the communications port is to be used.

Port Type

Possible Settings: Asynchronous, Synchronous Default Setting: Asynchronous

When Port Use is set to Net Link, Port Type controls whether the communication port will be asynchronous or synchronous.

Data Rate

Possible Settings: 9.6, 14.4, 19.2, 28.8, 38.4 Default Setting: 9.6

Specifies the communication port baud rate.

Parity

Possible Settings: None, Odd, Even Default Setting: None

Specifies the parity of the communication port.

Stop Bits

Possible Settings: 1, 1.5, 2 Default Setting: 1

Specifies the number of stop bits for the communication port.

Ignore Control Leads

Possible Settings: Disable, DTR Default Setting: Disable

Specifies whether DTR is used.

Possible Settings: Enable, Disable Default Setting: Disable

Specifies if an ID and password are required to access the asynchronous terminal interface on the communication port. Login IDs are created with a password and access level.

Port Access Level

Possible Settings: Administrator, Operator Default Setting: Administrator

Specifies the highest level of access allowed when accessing an ATI session through a Telnet session.

Inactivity Timeout

Possible Settings: Enable, Disable Default Setting: Disable

Provides automatic logoff of a Telnet session.

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Table 4. Communication Port (2 of 2)

Disconnect Time (Minutes)

Possible Settings: 1 – 60 Default Setting: 5

Number of minutes of inactivity before the session terminates automatically . Timeout is based on no keyboard activity .

Table 5. Telnet Session Options

T elnet Session

Possible Settings: Enable, Disable Default Setting: Enable

Specifies if the 7975 Termination Unit will respond to a Telnet session request from a Telnet client on an interconnected IP network.

T elnet Login Required

Possible Settings: Enable, Disable Default Setting: Disable

Used to secure access to the ATI through a Telnet session. Login IDs are created with a password and access level.

Session Access Level

Possible Settings: Administrator, Operator Default Setting: Administrator

The Telnet session access level is interrelated with the access level of the Login ID.

Inactivity Timeout

Possible Settings: Enable, Disable Default Setting: Disable

Provides automatic logoff of a Telnet session.

Disconnect Time (Minutes)

Possible Settings: 1 – 60 Default Setting: 5

Number of minutes of inactivity before a Telnet session terminates automatically. Time out is based on no keyboard activity .

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Table 6. Communication Protocol Options

Node IP Address

Possible Settings: 000.000.000.000 – 223.255.255.255 Default Setting: 000.000.000.000

Specifies the Node IP address. This option is only available when the standalone unit is configured as an L TU.

Node Subnet Mask

Possible Settings: 000.000.000.000 – 255.255.255.255 Default Setting: 000.000.000.000

Specifies the Node Subnet Mask. This option is only available when the standalone unit is configured as an L TU.

Default Network Destination

Possible Settings: None, COM, DSL Default Setting: None

Specifies where the default management network is connected, for example, if your default network is connected to the COM port, select COM as the default management network destination.

Communication Port IP Address

Possible Settings: 000.000.000.000 – 223.255.255.255 Default Setting: 000.000.000.000

Specifies the unit’s Communication Port IP Address when the unit is configured as a network communication link. This option is only used when the Port Use option on the Communication Port Options menu is set to Net Link. If the COM Port IP address is not set (000.000.000.000) the node IP address specified by the Node IP Port will be used.

Communication Port Subnet Mask

Possible Settings: 000.000.000.000 – 255.255.255.255 Default Setting: 000.000.000.000

Specifies the unit’s Communication Port Subnet Mask when the unit is configured as a network communication link. This option is only used when the Port Use option on the Communication Port Options menu is set to Net Link. If the COM Port IP address is not set (000.000.000.000), the node IP Address will be used.

Communication Port Link Protocol

Possible Settings: PPP, SLIP Default Setting: PPP

Specifies the unit’s Communication Port link protocol when the unit is configured as a network communication link. This option is only used when the Port Use option on the Communication Port Options menu is set to Net Link.

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Table 7. General SNMP Management Options

SNMP Management

Possible Settings: Enable, Disable Default Setting: Disable

Enables or disables the SNMP management features.

Community Name 1

Possible Settings: ASCII text field, Public Default Text: Public

Identifies the name of the community allowed to access the unit’s MIB. The community name must be supplied by an external SNMP manager when that manager attempts to access an object in the MIB.

Name 1 Access

Possible Settings: Read, Read/Write Default Setting: Read

Determines the access level for Community Name 1.

Community Name 2

Possible Settings: ASCII text field, Public Default Text: Public

Identifies the name of the second community allowed to access the unit’s MIB. The community name must be supplied by an external SNMP manager when that manager attempts to access an object in the MIB.

Name 2 Access

Possible Settings: Read, Read/Write Default Setting: Read

Determines the access level for Community Name 2.

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Table 8. SNMP NMS Security Options

NMS IP Validation

Possible Settings: Enable, Disable Default Setting: Disable

Specifies whether security checking is performed on the IP address of SNMP management systems attempting to access the node.

Number of Managers

Possible Settings: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 Default Setting: 1

Specifies the number of SNMP management systems that can send SNMP messages.

NMS n IP Address

Possible Settings: 000.000.000.000 – 223.255.255.255, Clear Default Setting: 000.000.000.000

Specifies the Internet Protocol address used to identify each SNMP manager.

Access Level

Possible Settings: Read, Read/Write Default Setting: Read

Determines the access level allowed for an authorized NMS when IP address validation is being performed.

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Table 9. SNMP Traps Options

SNMP Traps

Possible Settings: Enable, Disable Default Setting: Disable

Controls the generation of SNMP trap messages. The options for addresses and types of traps are located in this table.

Number of Trap Managers

Possible Settings: 1, 2, 3, 4, 5 Default Setting: 1

Sets the number of SNMP management systems that will receive SNMP traps.

NMS n IP Address

Possible Settings: 000.000.000.000 – 223.255.255.255, Clear Default Setting: 000.000.000.000

Specifies the Internet Protocol address used to identify each SNMP trap manager.

NMS n Destination

Possible Settings: DSL, COM Default Setting: DSL

Provides the network destination path of each trap manager.

General Traps

Possible Settings: Disable, Warm, AuthFail, Both Default Setting: Both

Determines which SNMP traps are sent to each trap manager.

Enterprise Specific Traps

Possible Settings: Enable, Disable Default Setting: Disable

Determines if SNMP traps are generated for enterprise-specific events.

Link Traps

Possible Settings: Disable, Up, Down, Both Default Setting: Both

Determines if SNMP traps are generated for link up and link down for one of the communication interfaces.

Link Trap Interfaces

Possible Settings: Network, SYNC, All Default Setting: All

Determines if the SNMP

enterpriseSpecific

(DTE) port, or all.

linkUp

traps are generated for the network interface and synchronous data

, SNMP

linkDown

, and interface-related

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Configuring the Unit Using the Internal Switches

If desired, use internal Switchpacks S1 and S2 to manually configure the unit.

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

496-15104

 Procedure

sure of the proper static control precautions, contact your nearest sales or service representative.

To configure the unit using internal Switchpacks S1 and S2:

1. Power down the unit and disconnect the power supply.

2. Remove the enclosure cover: — Insert a small, flat screwdriver blade into the slots on one side of the

cover and push to free the inner latches

— Lift off the cover to expose the circuit board

3. Locate Switchpack S1.

4. Set switch 1 on Switchpack S1 to ON to enable Switchpacks 1 and 2.

5. After you enable the switchpacks, you must set the switches to your desired

configuration.

6. Replace and secure the cover.

7. Power up the board to reset and enable the new configuration.

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Switchpack Locations

Use the following illustration to locate Switchpacks S1 and S2.

Switchpack S1 & S2

12345

678

12345

678

Front

Rear

Hotwire 7975 Standalone Termination Unit Switchpack Locations

98-15937

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Switchpack Definitions

Manually change configuration options by moving Switchpack S1 DIP switches on the card. Table 10 lists Switchpack S1 definitions.

Table 10. Switchpack S1 Definitions Switch # . . .

1 Enables or disables Switchpacks S1 and S2.

2 Controls Sync Port Type.

3 Select the unit’s timing source. Only valid for LTU configured units.

4, 5, 6, 7, 8 Control Sync Port Data Rate (refer to Table 11, Selectable Payload

Allows you to . . .

OFF = Switchpacks Disabled

ON = Switchpacks Enabled

OFF = EIA-530, RS-449, or X.21

ON = V.35

OFF = Internal clock

ON = External Clock

Rates)

NOTE: Switches 4 through 8 are only used when the unit is

configured as an L TU and autorate is disabled.

All OFF = 2048 kbps (1024 kbps for 1 Mbps units)

Default in Bold

Use Table 11 to set the Sync Port Payload Rate. Defaults are shown in bold.

NOTE:

Sync port and DSL Line Rates can only be selected from units configured as LTU (Switchpack S2 #1) with AutoRate disabled (Switchpack S2 # 2).

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Table 11. Selectable Payload Rates (Switches 4–8 on Switchpack S1)

DSL Li

Switch Number

Sync Port Payload Rate

2048 kbps (32 x 64) OFF OFF OFF OFF OFF 2064 kbps

1984 kbps (31 x 64) ON ON ON ON ON 2064 kbps 1920 kbps (30 x 64) ON ON ON ON OFF 2064 kbps 1856 kbps (29 x 64) ON ON ON OFF ON 2064 kbps 1792 kbps (28 x 64) ON ON ON OFF OFF 2064 kbps 1728 kbps (27 x 64) ON ON OFF ON ON 2064 kbps 1664 kbps (26 x 64) ON ON OFF ON OFF 2064 kbps 1600 kbps (25 x 64) ON ON OFF OFF ON 2064 kbps 1536 kbps (24 x 64) ON ON OFF OFF OFF 1552 kbps 1472 kbps (23 x 64) ON OFF ON ON ON 1552 kbps 1408 kbps (22 x 64) ON OFF ON ON OFF 1552 kbps 1344 kbps (21 x 64) ON OFF ON OFF ON 1552 kbps 1280 kbps (20 x 64) ON OFF ON OFF OFF 1552 kbps 1216 kbps (19 x 64) ON OFF OFF ON ON 1552 kbps 1152 kbps (18 x 64) ON OFF OFF ON OFF 1552 kbps 1088 kbps (17 x 64) ON OFF OFF OFF ON 1552 kbps 1024 kbps (16 x 64) ON OFF OFF OFF OFF 1040 kbps 960 kbps (15 x 64) OFF ON ON ON ON 1040 kbps 896 kbps (14 x 64) OFF ON ON ON OFF 1040 kbps 832 kbps (13 x 64) OFF ON ON OFF ON 1040 kbps 768 kbps (12 x 64) OFF ON ON OFF OFF 784 kbps 704 kbps (11 x 64) OFF ON OFF ON ON 784 kbps 640 kbps (10 x 64) OFF ON OFF ON OFF 784 kbps 576 kbps (9 x 64) OFF ON OFF OFF ON 784 kbps 512 kbps (8 x 64) OFF ON OFF OFF OFF 528 kbps 448 kbps (7 x 64) OFF OFF ON ON ON 528 kbps 384 kbps (6 x 64) OFF OFF ON ON OFF 400 kbps 320 kbps (5 x 64) OFF OFF ON OFF ON 400 kbps 256 kbps (4 x 64) OFF OFF ON OFF OFF 272 kbps 192 kbps (3 x 64) OFF OFF OFF ON ON 272 kbps 128 kbps (2 x 64) OFF OFF OFF ON OFF 144 kbps 64 kbps (1 x 64) OFF OFF OFF OFF ON 144 kbps

8 7 6 5 4

Associated

Rate

––––––––––––––– 2 Mbps Units Only –––––––––––––––––

NOTE:

The 1 Mbps unit Payload Rate has a default of 1024 kbps (all OFF).

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Table 12 lists Switchpack S2 definitions.

Table 12. Switchpack S2 Definitions Switch # . . . Allows you to . . .

1 Control whether the unit is an L TU or an NTU.

OFF = NTU

ON = LTU

2 Control enabling and disabling of the AutoRate capability .

OFF = AutoRate Enabled

ON = AutoRate Disabled

3, 4, 5 Select one of eight preset DSL line rates (refer to Table 13).

All OFF = 2064

6 Control enabling and disabling of the first in, first out (FIFO) buffer

circuit (Elastic Store) for the incoming external clock.

OFF = Elastic Store Enabled

ON = Elastic Store Disabled 7 Not used 8 Emergency Use Only – The Hotwire 7975 has two banks of flash

memory used to hold executable firmware. This switch allows you to

switch between the two versions of firmware. This switch is

independent from the position of Switch 1 on Switchpack S1

(switchpack enable/disable).

OFF = Current Firmware

ON = Previous Firmware

Default in Bold

Use Table 13 to set the DSL Line Rate. Defaults are shown in bold.

Table 13. DSL Line Rate, Switches 3–5 on Switchpack S2

Switch Position 5 4 3

OFF OFF ON 144 kbps OFF ON OFF 272 kbps OFF ON ON 400 kbps ON OFF OFF 528 kbps ON OFF ON 784 kbps ON ON OFF 1040 kbps ON ON ON 1552 kbps

OFF OFF OFF 2064 kbps

DSL Line Rate

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Important Safety Instructions

1. Read and follow all warning notices and instructions marked on the product

or included in the manual.

2. 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 24 Vdc National Electric Code (NEC) ANSI/NFPA 70/Canadian Electric Code (CEC) Class 2 circuit installed in accordance with articles 110-16, 110-17, and 110-18 of the NEC, and articles 2-308, 2-310, 2-312, 2-314, 2-200, and 2-202 of the CEC, or (3) a Safety Extra Low Voltage (SELV) power source with a maximum available output of less than 240 VA, certified for use in the country of installation.

3. 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.

4. Do not allow anything to rest on the power cord and do not locate the product

where persons will walk on the power cord.

5. Do not attempt to install or service this product yourself, as opening or

removing covers may expose you to dangerous high voltage points or other risks. Refer all installation and servicing to qualified service personnel.

6. General purpose cables are provided with this product. Special cables, which

may be required by the regulatory inspection authority for the installation site, are the responsibility of the customer.

7. 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.

8. 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.

9. In addition, if 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.

March 1999

7975-A2-GZ41-00

Page 23

EMI Warnings

WARNING:

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

The authority to operate this equipment is conditioned by the requirements that no modifications will be made to the equipment unless the changes or modifications are expressly approved by Paradyne Corporation.

WARNING:

To Users of Digital Apparatus in Canada: This Class A digital apparatus meets all requirements of the Canadian

interference-causing equipment regulations. Cet appareil numérique de la classe A respecte toutes les exigences du

règlement sur le matérial brouilleur du Canada.

Warranty, Sales, Service, and Training Information

Contact your local sales representative, service representative, or distributor directly for any help needed. For additional information concerning warranty, sales, service, repair, installation, documentation, training, distributor locations, or Paradyne worldwide office locations, use one of the following methods:

 Internet:

(Be sure to register your warranty there. Select

Warranty Registration.

 Telephone: Call our automated system to receive current information by fax

or to speak with a company representative.

— Within the U.S.A., call 1-800-870-2221 — Outside the U.S.A., call 1-727-530-2340

Visit the Paradyne World Wide Web site at www.paradyne.com.

Service & Support

)

→

7975-A2-GZ41-00

March 1999

Page 24

Asynchronous Terminal Interface Menu

The following illustration shows the menu paths to the different terminal screens.

Main

System and

Test Status

Status Test

Performance

Statistics

Network

Error

Statistics

Network T ests SYNC Data

Display

LEDs

Network

Performance

Statistics

Port T ests

Identity

Device

T ests

Telnet

Session

Abort T ests

Network Sync

Factory

All

Config

Port

Communication

Protocol

Configuration Control

Change

Identity

Configuration

Loader

System Options

Communication

General SNMP

Management

Download

Code

Administer

Logins

Current Configuration

Edit/Display

Port

Communication

SNMP NMS

Security

Reset

AutoRate

Apply

Download

Management

and

SNMP

Traps

99-15859a

Reset

Device

Document Feedback

We welcome your comments and suggestions about this document. Please mail them to Technical Publications, Paradyne Corporation, 8545 126th Ave. N., Largo, FL 33773, or send e-mail to userdoc@paradyne.com. Include the number and title of this document in your correspondence. Please include your name and phone number if you are willing to provide additional clarification.



*7975–A2–GZ41–00*

March 1999

7975-A2-GZ41-00