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Paradyne HotWire 7974 User Manual

Standalone termination unit
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HOTWIRE
7974, 7975, 7976,
7984, 7985, AND 7986
STANDALONE
TERMINATION UNIT
USER'S GUIDE
Document No. 7970-A2-GB20-00
August 1999

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Summary of Contents for Paradyne HotWire 7974

  • Page 1 HOTWIRE 7974, 7975, 7976, 7984, 7985, AND 7986 STANDALONE TERMINATION UNIT USER’S GUIDE Document No. 7970-A2-GB20-00 August 1999...

  • Page 2: August

    Copyright E 1999 Paradyne Corporation. All rights reserved. Printed in U.S.A. Notice This publication is protected by federal copyright law. No part of this publication may be copied or distributed, transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language in any form or by any means, electronic, mechanical, magnetic, manual or otherwise, or disclosed to third parties without the express written permission of Paradyne Corporation, 8545 126th Ave.
  • Page 3 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;...
  • Page 4 Important Information 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.

  • Page 5: Table Of Contents

    Contents About This Guide H Document Purpose and Intended Audience H Document Summary H Product-Related Documents About the Hotwire 79xx Standalone Termination Unit H M/SDSL and M/HDSL Overview H Hotwire 79xx Standalone Termination Unit Features H Network Configuration H Front Panel LED Status Indicators H Rear Panel Interface Connections H SNMP Management Capabilities Management Information Base (MIB) Support...
  • Page 6 Test Status Messages H Viewing Network Error Statistics H Viewing Network Performance Statistics H Viewing DSX-1 Performance Statistics (Models 7974, 7984) H Viewing G.703 Performance Statistics (Models 7976, 7986) H Using the Display LEDs Screen H Hotwire 79xx Standalone Termination Unit LEDs .
  • Page 7 H Accessing the Test Menu H Running Network Tests Network Line Loopback Remote Network Send Line Loopback Send and Monitor 511 H DSX-1 Tests (Models 7974, 7984) DSX-1 Repeater Loopback DSX-1 DTE Loopback H SYNC Data Port Tests (Models 7975, 7985) Data Terminal Loopback...
  • Page 8 H IP Addressing Example Configuration Option Tables H Overview H Network Interface Options Menu H DSX-1 Interface Options (Models 7974, 7984) H Synchronous Data Port Options (Models 7975, 7985) H G.703 Interface Options (Models 7976, 7986) H System Options Menu...
  • Page 9 Standards Compliance for SNMP Traps H SNMP Traps warmStart authenticationFailure linkUp and linkDown H Enterprise-Specific Traps Cables and Pin Assignments H Overview H DSL Network Interface Cable H COM Port Interface Cable H Power Input Connector H Optional Power Cable H DSX-1/G.703 Network Interface H EIA-530-A Port H EIA-530-A-to-X.21 Interface...
  • Page 10 Contents This page intentionally left blank. August 1999 7970-A2-GB20-00...

  • Page 11: A2-Gb20

    Document Purpose and Intended Audience This guide contains information needed to set up, configure, and operate the Hotwire 7974, 7975, 7976, 7984, 7985, and 7986 Multirate Symmetric Digital Subscriber Line (M/SDSL) and Multirate High-bit-rate DSL (M/HDSL) Standalone Termination Units, and is intended for installers and operators.
  • Page 12 Defines acronyms and terms used in this document. Lists key terms, acronyms, concepts, and sections in alphabetical order. Document Title Hotwire 7974, 7975, 7976, 7984, 7985, and 7986 Standalone Termination Unit Installation Instructions Hotwire 8774 M/SDSL Termination Unit, with DSX-1 Interface, User’s Guide Hotwire 8775 M/SDSL Termination Unit User’s Guide...

  • Page 13: About The Hotwire 79Xx Standalone Termination Unit

    About the Hotwire 79xx Standalone Termination Unit M/SDSL and M/HDSL Overview Hotwirer Multirate Symmetric Digital Subscriber Line (M/SDSL) and Multirate High-bit-rate Digital Subscriber Line (M/HDSL) products maximize customer service areas by varying the DSL line rate. This ensures symmetric DSL connectivity over a wide range of telephone line distances and transmission line qualities.

  • Page 14: H Hotwire 79Xx Standalone Termination Unit Features

    About the Hotwire 79xx Standalone Termination Unit Hotwire 79xx Standalone Termination Unit Features The Hotwire 79xx Standalone Termination Unit is an endpoint for the chassis-mounted Hotwire 87xx Termination Unit housed in the Hotwire 8600 Series or 8800 Series Digital Subscriber Line Access Multiplexer (DSLAM). Two Hotwire 79xx Standalone Termination Units can also be configured to operate in a central office line termination unit (LTU) to customer premises network termination unit (NTU) environment.

  • Page 15: Network Configuration

    Network Configuration Figure 1-1 shows a network application using a 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.

  • Page 16: Front Panel Led Status Indicators

    Monitoring the Unit Figure 1-2. Hotwire DSX-1 Interface Standalone Termination Unit Front Panel Figure 1-3. Hotwire Synchronous Interface Standalone Termination Unit Front Panel Figure 1-4. Hotwire G.703 Interface Standalone Termination Unit Front Panel 7974 M/SDSL 7975 M/SDSL 7976 M/SDSL August 1999 98-16116...

  • Page 17: Rear Panel Interface Connections

    Rear Panel Interface Connections Figures 1-5 through 1-7 show the physical interfaces of the termination units. Figure 1-5. Hotwire 7974 and 7984 Standalone Termination Unit Rear Panel Figure 1-6. Hotwire 7975 and 7985 Standalone Termination Unit Rear Panel Figure 1-7. Hotwire 7976 and 7986 Standalone Termination Unit Rear Panel...

  • Page 18: H Snmp Management Capabilities

    TCP/IP internets and provides general information about the unit. MIB II is backward-compatible with MIB I. DS1/E1 MIB (RFC 1406) – Models 7974, 7976, 7984, and 7986. Reports the performance status of the DSX-1 or G.703 interface and supports the features found on the DSX-1 or G.703 Performance Statistics screen.

  • Page 19: Snmp Trap Support

    SNMP Trap Support Hotwire 79xx Standalone Termination Units support traps as defined in RFC 1215. Figure 1-8 illustrates a typical DSL SNMP configuration. Figure 1-9 illustrates an DSL SNMP configuration connected directly to the Communications Port. Refer to Chapter 9, Traps Router Figure 1-8.
  • Page 20 About the Hotwire 79xx Standalone Termination Unit This page intentionally left blank. August 1999 7970-A2-GB20-00...

  • Page 21: Using The Asynchronous Terminal Interface

    Using the Asynchronous Terminal Interface User Interface Access You can communicate with the Hotwire 79xx Standalone Termination Unit with an asynchronous terminal interface (ATI) using one of the following methods: Direct connection through the COM port of the standalone unit or through the serial port of the DSLAM MCC.

  • Page 22: Initiating An Ati Session

    Using the Asynchronous Terminal Interface Initiating an ATI Session The Main Menu screen is displayed on the screen unless a login ID and password is required or the ATI is already in use. If the ATI is already in use, you will see: A connection refused or connection failed message (if you are using a Telnet session), or The IP address of the other user (if you are using the Management Serial...
  • Page 23 After you enter a valid login ID and password, the Main Menu appears. If you enter an invalid login ID and password after three attempts, the Telnet session closes or the terminal connection returns to an idle state. Refer to Chapter 8, Security Î...
  • Page 24 7976, 7986: G.703 Statistics Network Performance Statistics 7974, 7984: (Not Applicable) 7975, 7985: Sync Data Port Tests 7976, 7986: (Not Applicable) 7974, 7984: Network and DSX-1 Tests 7975, 7985: Network Tests 7976, 7986: Network and G.703 Tests Network Main Test Configuration...

  • Page 25: Screen Work Areas

    Screen Work Areas There are two user work areas: Screen area – This is the area above the dotted line that provides the menu path, menus, and input fields. The menu path appears as the first line on the screen. In this manual, the menu path is presented as a menu selection sequence with the names of the screens: Main Menu...

  • Page 26: H Navigating The Screens

    Using the Asynchronous Terminal Interface Navigating the Screens You can navigate the screens by: Using keyboard keys Using screen function keys Switching between the two screen work areas Keyboard Keys Use the following keyboard keys to navigate within the screen. Press .

  • Page 27: Screen Function Keys

    " Procedure To make a menu or field selection: 1. Press the Tab key or the right arrow key to position the cursor on a menu or field selection. Each selection is highlighted as you press the key to move the cursor from position to position.

  • Page 28: Switching Between Screen Work Areas

    Using the Asynchronous Terminal Interface Switching Between Screen Work Areas Select Ctrl-a to switch between the two screen work areas to perform all screen functions. " Procedure To access the screen function area below the dotted line: 1. Press Ctrl-a to switch from the screen area to the screen function key area below the dotted line.

  • Page 29: Initial Startup And Configuration

    Initial Startup and Configuration Overview This chapter provides instructions on how to access and configure your Hotwire 79xx Standalone Termination Unit for the first time. This chapter includes procedures for: Connecting power to the unit. Connecting the unit to the network. Connecting the unit to a DTE.

  • Page 30: Connecting To An Optional External +24 Vdc Power Source

    Initial Startup and Configuration Connecting Power 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 power source as described in Connecting the Unit to an Optional External +24 Vdc Power Source .

  • Page 31: H Connecting To The Network

    Connecting to a DTE As the following table shows, the DTE interface varies from model to model. Model DTE Connection 7974, The DSX-1 interface is an RJ48C, 8-position, unkeyed modular connector. An 7984 RJ48C-to-DB15 T1 network interface adapter cable is available from Paradyne.

  • Page 32: Connecting To A System Terminal

    Initial Startup and Configuration 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.

  • Page 33: Entering Identity Information

    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 main/control/change_identity...
  • Page 34 Initial Startup and Configuration " Procedure To enter Change Identity screen information: 1. Position the cursor in the System Name field. Enter a name unique in your network to identify the SNMP managed node (or unit). The maximum length of System Name is 128 characters. 2.

  • Page 35: H Choosing A Configuration Method

    Choosing 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.

  • Page 36: Accessing And Displaying Configuration Options

    Initial Startup and Configuration Accessing and 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 main/configuration Î...

  • Page 37: H Configuration Edit/Display

    Configuration Edit/Display The Configuration Edit/Display screen appears when the current, customer, or default configuration is loaded. To access the Configuration Edit/Display screen, follow this menu selection sequence: Main Menu – or – Main Menu main/config/edit Î ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Î Ctrl-a to access these functions, ESC for previous menu Save 7970-A2-GB20-00 Initial Startup and Configuration...
  • Page 38 Options, Table A-11 August 1999 To Configure the . . . DSL network interface on the unit. DSX-1 interface (Models 7974, 7984); Synchronous DTE interface (Models 7975 and 7985); or G.703 interface (Models 7976, 7986) General system options of the unit.

  • Page 39: Configuration Loader

    Configuration Loader The Configuration Loader screen allows you to upload configurations to and download configurations from a TFTP server. To access the Configuration Loader screen, follow this menu selection sequence: Main Menu Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î main/config/config_loader Î...
  • Page 40 Initial Startup and Configuration " Procedure To upload or download a configuration: 1. Position the cursor in the Image File Name field. Type the name of the file to be downloaded, or the name to be used for the file to be uploaded. The filename may be a regular path name expression of directory names separated by a forward slash (/ ) ending with the filename.

  • Page 41: Saving Configuration Options

    Saving Configuration Options When changes are made to the configuration options through the Configuration Edit/Display branch, the changes must be saved to take effect. Use the Save key or Save Configuration screen. " Procedure To save configuration options changes: 1. Press Ctrl-a to switch to the screen function key area below the dotted line. 2.

  • Page 42: Download Code

    Initial Startup and Configuration Download Code The Download Code screen allows you to download firmware from a TFTP server. To access the Download Code screen, follow this menu selection sequence: Main Menu Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î...
  • Page 43 " Procedure To download firmware: 1. Position the cursor in the Image File Name field. Type the name of the file to be downloaded. The file name may be a regular path name expression of directory names separated by a forward slash (/ ) ending with the file name. The total path name length can be up to 128 characters.
  • Page 44 Initial Startup and Configuration This page intentionally left blank. 3-16 August 1999 7970-A2-GB20-00...

  • Page 45: Configuring The Unit Using The Internal Switches

    Configuring the Unit Using the Internal Switches Overview 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.

  • Page 46: H Configuring The Unit Using The Internal Switches

    Configuring the Unit Using the Internal Switches Configuring the Unit Using the Internal Switches Use internal Switchpacks S1 and S2 to manually configure the unit. Use Figure 4-1 HANDLING PRECAUTIONS FOR STATIC-SENSITIVE DEVICES This product is designed to protect sensitive components from damage due to electrostatic discharge (ESD) during normal operation.

  • Page 47: Switchpack Locations

    Configuring the Unit Using the Internal Switches Switchpack Locations Use Figure 4-1 to locate Switchpacks S1 and S2. Switchpack S1 & S2 Front Rear 98-16073a Figure 4-1. Hotwire Standalone Termination Unit Switchpack Locations 7970-A2-GB20-00 August 1999...

  • Page 48: Switchpack Definitions For Models 7974 And 7984

    Configuring the Unit Using the Internal Switches Switchpack Definitions for Models 7974 and 7984 Table 4-1 lists Switchpack S1 definitions. Table 4-1. Switchpack S1 Definitions (Models 7974 and 7984) Switch # . . . 6, 7, 8 Allows you to . . .
  • Page 49 Table 4-2 lists Switchpack S2 definitions. Table 4-2. Switchpack S2 Definitions (Models 7974 and 7984) Switch # . . . 3, 4, 5 Use Table 4-3 to set the DSL Line Rate. Defaults are shown in bold. Table 4-3. DSL Line Rate, Switches 3–5 on Switchpack S2...

  • Page 50: Switchpack Definitions For Models 7975 And 7985

    Configuring the Unit Using the Internal Switches Switchpack Definitions for Models 7975 and 7985 Table 4-4 lists Switchpack S1 definitions. Table 4-4. Switchpack S1 Definitions (Models 7975 and 7985) Switch # . . . 4, 5, 6, 7, 8 Use Table 4-5 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).
  • Page 51 Table 4-5. Selectable Payload Rates (Models 7975 and 7985) Sync Port Payload Rate 2048 kbps (32 x 64) 1984 kbps (31 x 64) 1920 kbps (30 x 64) 1856 kbps (29 x 64) 1792 kbps (28 x 64) 1728 kbps (27 x 64) 1664 kbps (26 x 64) 1600 kbps (25 x 64) 1536 kbps (24 x 64)
  • Page 52 Configuring the Unit Using the Internal Switches Table 4-6 lists Switchpack S2 definitions. Table 4-6. Switchpack S2 Definitions (Models 7975 and 7985) Switch # . . . 3, 4, 5 Use Table 4-7 to set the DSL Line Rate. Defaults are shown in bold. Table 4-7.

  • Page 53: Switchpack Definitions For Models 7976 And 7986

    Switchpack Definitions for Models 7976 and 7986 Table 4-8 lists Switchpack S1 definitions. Table 4-8. Switchpack S1 Definitions (Models 7976 and 7986) Switch # . . . 7970-A2-GB20-00 Configuring the Unit Using the Internal Switches Allows you to . . . Enable or disable Switchpacks S1 and S2.
  • Page 54 Configuring the Unit Using the Internal Switches Table 4-9 lists Switchpack S2 definitions. Table 4-9. Switchpack S2 Definitions (Models 7976 and 7986) Switch # . . . 3, 4, 5 6, 7 Use Table 4-10 to set the DSL Line Rate. Defaults are shown in bold. Table 4-10.

  • Page 55: Monitoring The Unit

    Monitoring the Unit What to Monitor This chapter presents information on how to access and monitor Hotwire 79xx Standalone Termination Units. You can monitor a unit’s operations by viewing: System and Test Status Highest priority Network Error Statistics Network Performance Statistics DSX-1 Display LEDs screen Termination Unit...

  • Page 56: Viewing System And Test Status

    Monitoring the Unit Viewing System and Test Status To view System and Test Status information, follow this menu selection sequence: Main Menu Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î main/status/system Î...

  • Page 57: Health And Status Messages

    Health and Status Messages The following messages can appear in the first column of the System and Test Status screen. The highest priority Health and Status message also appears on all ATI screens on the bottom right. Table 5-1. Health and Status Messages (1 of 2) Message System Operational LOS at Net, Pt 1...
  • Page 58 Monitoring the Unit Table 5-1. Health and Status Messages (2 of 2) Message Yellow Alarm at DSX-1 RAI (Remote Alarm Indication) at G.703 interface, Pt 1 SYNC Pt Down Net Margin Threshold Fallback Rate Primary Clock Failed A failure has occurred in Net Com Link Down NTU TS16 Not Supported...

  • Page 59: Self-Test Results Messages

    Self-Test Results Messages The results of the last power-up or reset self-test appear in the middle column of the System and Test Status screen. Table 5-2. Self-Test Results Messages Message Passed CPU Failed Device Failed DSX-1 Failed Sync Port Failed G.703 Failed Memory Failed FPGA Failed...

  • Page 60: Test Status Messages

    Monitoring the Unit Test Status Messages The Test Status messages in the following table appear in the right column of the System and Test Status screen. Table 5-3. Test Status Messages Test Status Message No Test Active LLB Test Active RLB Test Active DTLB Test Active DCLB Test Active...

  • Page 61: Viewing Network Error Statistics

    Viewing Network Error Statistics The Hotwire 79xx Standalone Termination Unit maintains error statistics on the network DSL interface. Statistics are maintained for up to 96 15-minute intervals (24 hours). To view the Network Error Statistics, follow this menu selection sequence: Main Menu Î...
  • Page 62 Monitoring the Unit Network Error Statistics are collected for: ES (Errored Seconds): Seconds during which one or more CRC error events occurred. SES (Severely Errored Seconds): Seconds during which more than 320 cyclic redundancy check (CRC) error events or at least one Out of Frame (OOF) event occurred.

  • Page 63: Viewing Network Performance Statistics

    Viewing Network Performance Statistics Network performance statistics allow you to monitor the current status of the network DSL operations. Performance statistics can assist you in determining the duration of specific conditions and provide a historical context for problem detection and analysis. Statistics are maintained for up to 96 15-minute intervals (24 hours).
  • Page 64 Monitoring the Unit Network Performance Statistics are collected for: Mrgn: Margin, the signal-to-noise ratio (SNR) less an SNR reference value. XmtPw: The transmit power level. RxGn: The receiver gain level. Complete: Whether the interval register contains data for a complete 900-second interval.

  • Page 65: H Viewing Dsx-1 Performance Statistics (Models 7974, 7984)

    Viewing DSX-1 Performance Statistics (Models 7974, 7984) DSX-1 performance statistics allow you to monitor the current status of the DSX-1 interface operations when ESF framing is selected. Performance statistics can assist you in determining the duration of specific conditions and provide a historical context for problem detection and analysis.
  • Page 66 Monitoring the Unit DSX-1 Performance Statistics are collected for: ES (Errored Seconds): Seconds during which one or more error events occurred. UAS (Unavailable Seconds): Seconds during which service is unavailable. UAS is received at the start of 10 consecutive SES and cleared at the start of 10 seconds with no SES.

  • Page 67: H Viewing G.703 Performance Statistics (Models 7976, 7986)

    Viewing G.703 Performance Statistics (Models 7976, 7986) G.703 performance statistics allow you to monitor the current status of the G.703 interface operations. Performance statistics can assist you in determining the duration of specific conditions and provide a historical context for problem detection and analysis.
  • Page 68 Monitoring the Unit G.703 Performance Statistics are collected for: ES (Errored Seconds): Seconds during which one or more error events occurred. UAS (Unavailable Seconds): Seconds during which service is unavailable. UAS is received at the start of 10 consecutive SES and cleared at the start of 10 seconds with no SES.

  • Page 69: H Using The Display Leds Screen

    Using the Display LEDs Screen The Hotwire 79xx Standalone Termination Unit LEDs can be viewed on the Display LEDs status screen. This ATI status screen is available locally and remotely. There are three groups of LEDs: General LEDs display the status of the unit DTE (DSX-1, Sync Port, or G.703) LEDs provide the status of the DTE interface DSL Loop LEDs display the activity on the DSL network...

  • Page 70: H Hotwire 79Xx Standalone Termination Unit Leds

    Monitoring the Unit 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 POWER ALARM TEST DSX-1 G.703 Slow Cycling: Fast Cycling: Pulsing: 5-16 Color LED is .

  • Page 71: Accessing The Test Menu

    –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Ctrl-a to access these functions, ESC for previous menu Select . . . On . . . Network and DSX-1 Tests Models 7974 and 7984 Network Tests Models 7975 and 7985 Network and G.703 Tests Models 7976 and 7986...

  • Page 72: Running Network Tests

    Running Network Tests Network tests require the participation of your network service provider. To access the Network Tests screen, follow this menu selection sequence: Models 7974 and 7984: Main Menu Models 7975 and 7985 (sample screen shown below): Main Menu...

  • Page 73: Network Line Loopback

    Network Line Loopback Network Line Loopback loops the received signal on the network interface back to the network without change. Port Transceiver " Procedure To run a Network Line Loopback: 1. Position the cursor at the Start command next to Network Line Loopback on the Network &...

  • Page 74: Remote Network Send Line Loopback

    Testing Remote Network Send Line Loopback The local unit initiates this test by sending a line loopback Up or Down command to the remote unit for 10 seconds. When the remote unit detects the loopback Up command, it puts itself in line loopback and lights the front panel test LED. The remote unit remains in loopback until it receives a loopback Down command or the remote unit’s test timeout value is exceeded.

  • Page 75: Send And Monitor 511

    Send and Monitor 511 The LTU initiates the test by sending a command to the remote unit to send a 511 test pattern. When the remote unit detects the command, it sends a 511 pattern and lights the front panel TEST LED. Each unit will send and monitor the 511 pattern.
  • Page 76 Testing DSX-1 Tests (Models 7974, 7984) To access the Network & DSX-1 Tests screen, follow this menu selection sequence: Main Menu Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î...

  • Page 77: Dsx-1 Repeater Loopback

    DSX-1 Repeater Loopback DSX-1 Repeater Loopback loops the signal being sent from the data port back to the data port. In a T1-to-V.35 Repeater Loopback, the data signal is also sent to the DSL port; in a T1-to-T1 Repeater Loopback, an Alarm Indication Signal (AIS) is sent to the DSL port.

  • Page 78: Dsx-1 Dte Loopback

    Testing DSX-1 DTE Loopback DSX-1 DTE Loopback loops the DSX-1 signal back to itself before the signal is sent to the Framer. All Ones Port " Procedure To run a DSX-1 DTE Loopback: 1. Position the cursor at the Start command next to DSX-1 DTE Loopback on the Network &...

  • Page 79: H Sync Data Port Tests (Models 7975, 7985)

    SYNC Data Port Tests (Models 7975, 7985) To access the SYNC Data Port Tests screen, follow this menu selection sequence: Main Menu Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î main/test/data Î...

  • Page 80: Data Terminal Loopback

    Testing Data Terminal Loopback Data Terminal Loopback (DTLB) loops the user data back to the DTE. This loopback is located as closely as possible to the user data port (DTE) interface. All Ones Port " Procedure To run a Data Terminal Loopback: 1.

  • Page 81: Data Channel Loopback

    Data Channel Loopback Data Channel Loopback (DCLB) loops the data from the network interface back to the network. This loopback is located as closely as possible to the user data port (DTE) interface. Port " Procedure To run a Data Channel Loopback: 1.

  • Page 82: Send Remote Data Channel Loopback

    Testing Send Remote Data Channel Loopback The local termination unit can send an Up or Down sequence to request the start or stop of a Data Channel Loopback (DCLB) on a remote unit. Port Interface " Procedure To send a Remote DCLB: 1.

  • Page 83: H G.703 Tests (Models 7976, 7986)

    G.703 Tests (Models 7976, 7986) To access the Network & G.703 Tests screen, follow this menu selection sequence: Main Menu Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î...

  • Page 84: G.703 Repeater Loopback

    Testing G.703 Repeater Loopback G.703 Repeater Loopback (RLB) loops the signal being sent from the data port back to the data port and to the network interface. Activating the G.703 Repeater Loopback test causes the EOC, used for management, to be lost to the remote unit. Port Transceiver "...

  • Page 85: G.703 Dte Loopback

    G.703 DTE Loopback G.703 DTE Loopback loops the G.703 signal back to itself before the signal is sent to the Framer. Activating the G.703 DTE loopback test causes the EOC, used for management, to be lost to the remote unit. All Ones Port "...

  • Page 86: H Device Tests

    Testing Device Tests The Device Tests branch is used to access the only card-level test, the Lamp Test. To access the Device Tests screen, follow this menu selection sequence: Main Menu main/test/card –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Î –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Ctrl-a to access these functions, ESC for previous menu Lamp Test The Lamp Test determines whether all LEDs are lighting and functioning properly.

  • Page 87: Ending An Active Test

    Ending an Active Test A test initiated by the user can be ended using: The Test Timeout option to automatically terminate a Loopback or Pattern test (as opposed to manually terminating a test) after it has been running a specified period of time. The default is 10 minutes. Refer to Table A-5, System The Command column on each test screen.

  • Page 88: H Telco-Initiated Tests (Models 7974, 7984)

    Bit-Oriented Message-Oriented Telco-Initiated Line Loopback The Hotwire 7974 and 7984 Standalone Termination Units support line loopback as specified in AT&T TR 54016, AT&T TR 62411, and ANSI T1.403. A Telco-initiated line loopback loops the received signal on the DSX-1 interface back to the DSX-1 interface without modification.

  • Page 89: Telco-Initiated Payload Loopback

    Telco-Initiated Payload Loopback The Hotwire 7974 and 7984 Standalone Termination Units support payload loopback as specified in AT&T TR 54016 and ANSI T1.403. A Telco-initiated payload loopback loops the received signal on the DSX-1 interface back to the DSX-1 interface. Framing, CRC, and FDL bits are regenerated at the point of the loopback, and BPVs are removed.
  • Page 90 Testing This page intentionally left blank. 6-20 August 1999 7970-A2-GB20-00...

  • Page 91: Messages And Troubleshooting

    Messages and Troubleshooting Overview Resources available to assess the status of the Hotwire 79xx Standalone Termination Unit and contribute to problem resolutions are described in the following sections: Configuring SNMP Traps Device Messages Troubleshooting 7970-A2-GB20-00 August 1999...

  • Page 92: Configuring Snmp Traps

    Messages and Troubleshooting Configuring SNMP Traps An SNMP trap can be automatically sent out through the EOC or the Management port to an SNMP manager when the Hotwire 79xx Standalone Termination Unit detects conditions set by the user. These traps enable the SNMP manager to gauge the state of the network.

  • Page 93: Device Messages

    Device Messages The Device Messages in Table 7-1, listed in alphabetical order, can appear in the messages area at the bottom of the ATI screens. Table 7-1. Device Messages (1 of 2) Device Message 0.0.0.0 is an invalid IP address Access level is Operator.
  • Page 94 Messages and Troubleshooting Table 7-1. Device Messages (2 of 2) Device Message Invalid Test Combination Limit of six Login IDs reached No Security Records to Delete Password Matching Error – Re-enter Password Please Wait Test Active What Message Indicates What To Do A loopback or pattern test Wait until other test ends.

  • Page 95: Troubleshooting

    Troubleshooting The Hotwire 79xx Standalone Termination Unit is designed to provide you with many years of trouble-free service. If a problem occurs, however, refer to Table 7-2 for possible solutions. Table 7-2. Troubleshooting (1 of 2) Symptom ALARM LED is on. Cannot access the unit via the ATI.
  • Page 96 Messages and Troubleshooting Table 7-2. Troubleshooting (2 of 2) Symptom Not receiving data. Power-On Self-Test fails. Only POWER and ALARM LEDs are on after power-on. Possible Cause Solutions The network or data port Check network and data port cables are not cables.
  • Page 97 Security Overview The Hotwire 79xx Standalone Termination Unit provides several methods of security by limiting user access to the ATI through option settings. You can: Enable the Telnet Login Required option. Limit the access by setting a Session Access Level option of Operator for the Telnet Session.

  • Page 98: Security

    Security ATI Access Levels The Hotwire 79xx Standalone Termination Unit has two access levels: Administrator and Operator. The access level determines what functions are accessible, as shown in Table 8-1. Table 8-1. Access Levels ATI Access to Menu Functions Status Test Configuration Control...

  • Page 99: Creating A Login

    Creating a Login Logins apply to the terminal directory connected to the communication port or Telnet access directly to the ATI of the unit. Six login ID/password combinations are available. Each Login ID and Password must be unique and include an access level. "...
  • Page 100 Security 3. Create the login by entering the following fields. Login IDs and passwords are case-sensitive. On the Login Entry screen, for the . . . Login ID Password Re-enter Password Access Level NOTE: Assign at least one Administrator-level Login ID. Full access is necessary to make configuration option changes and administer logins.

  • Page 101: Deleting A Login

    Deleting a Login " Procedure 1. To delete a login record, follow this menu selection sequence: Main Menu 2. Select PgUp or PgDn and press Enter to page through login pages / records until you find the one to be deleted. 3.

  • Page 102: H Resetting The Unit's Com Port Or Factory Defaults

    Security Resetting the Unit’s COM Port or Factory Defaults The user interface can be rendered inaccessible with a faulty configuration. Two methods can be used to restore it: Reset COM Port – Allows you to reset the configuration options related to COM port usage.

  • Page 103: H Controlling Snmp Access

    Controlling SNMP Access There are three methods for limiting SNMP access: Disable the SNMP management option. Refer to Table A-9, Management Assign SNMP community names and access types. Limit SNMP access through validation of the IP address of each allowed SNMP manager.
  • Page 104 Security This page intentionally left blank. August 1999 7970-A2-GB20-00...

  • Page 105: Ip Addressing

    IP Addressing Selecting an IP Addressing Scheme Your IP addressing scheme depends in part whether the Hotwire 79xx Standalone Termination Unit is running in IP Conservative mode. The unit runs in IP Conservative mode if it is connected to a DSLAM card running in IP Conservative mode.
  • Page 106 IP Addressing Review the following information in preparation for selecting an IP addressing scheme. Any legal host address is allowed for a given subnet. The address choice within the subnet is arbitrary. A single route to a subnet is all that is needed to reach every device on a subnet.

  • Page 107: Configuration Option Tables

    Chapter 3, Initial Startup and Configuration . August 1999 To Configure the . . . DSL network interface on the unit. DSX-1 interface (Models 7974, 7984); Synchronous DTE interface (Models 7975, 7985); G.703 interface (Models 7976, 7986) General system options of the unit.

  • Page 108: H Network Interface Options Menu

    Configuration Option Tables Network Interface Options Menu For Network Interface Options, refer to Table A-1. To access the Network Interface Options screen, follow this menu selection sequence: Main Menu main/config/network Î Circuit Identifier: –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Ctrl-a to access these functions, ESC for previous menu Save Table A-1.
  • Page 109 Default Setting: [Highest multiple of 64 kbps supported by the DSL Line Rate] Models 7974, 7976, 7984, 7986. When the NTU has an EIA-530-A interface, the Payload Rate set on the LTU determines the port speed of the synchronous port of the NTU.
  • Page 110 Î –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Ctrl-a to access these functions, ESC for previous menu Save Table A-2. DSX-1 Interface Options – Models 7974 and 7984 (1 of 2) Line Coding Format Possible Settings: AMI, B8ZS Default Setting: B8ZS Specifies the line coding format to be used by the DSX-1 interface.
  • Page 111 Table A-2. DSX-1 Interface Options – Models 7974 and 7984 (2 of 2) Line Equalization Possible Settings: 0–133, 133–266, 266–399, 399–533, 533–655 Default Setting: 0–133 Compensates for signal distortion for a DSX-1 signal over a given distance. 0–133 feet – Provides equalization for a cable length up to 133 feet.

  • Page 112: H Synchronous Data Port Options (Models 7975, 7985

    Configuration Option Tables Synchronous Data Port Options (Models 7975, 7985) For Synchronous Data Port Options, refer to Synchronous Data Port Options screen, follow this menu selection sequence: Main Menu main/config/sync_data Î ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Ctrl–a to access these functions, ESC for previous menu MainMenu Exit Table Configuration Load Configuration From...
  • Page 113 Table A-3. Synchronous Data Port Options – Models 7975 and 7985 (1 of 3) Port Type Possible Settings: E530A, V.35, RS449, X.21 Default Setting: E530A Determines the port type for the data port. E530A – The port is configured as an EIA-530-A compatible DCE. An EIA-530-A compatible DTE can be connected directly to the DB25 Port connector on the rear panel of the unit.
  • Page 114 Configuration Option Tables Table A-3. Synchronous Data Port Options – Models 7975 and 7985 (2 of 3) Invert Transmit Clock Possible Settings: Disable, Enable Default Setting: Disable Specifies whether the clock supplied by the termination unit on the TXC interchange circuit DB (CCITT 114) is phase inverted with respect to the Transmitted Data interchange circuit BA (CCITT 103).
  • Page 115 Configuration Option Tables Table A-3. Synchronous Data Port Options – Models 7975 and 7985 (3 of 3) 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.

  • Page 116: H G.703 Interface Options (Models 7976, 7986

    Configuration Option Tables G.703 Interface Options (Models 7976, 7986) For G.703 Interface Options, refer to Table A-4. To access the G.703 Interface Options screen, follow this menu selection sequence: Main Menu main/config/G.703 Î –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Ctrl-a to access these functions, ESC for previous menu Save Table A-4.
  • Page 117 Table A-4. G.703 Interface Options – Models 7976 and 7986 (2 of 2) Line Framing Possible Settings: CRC4, noCRC4 Default Setting: noCRC4 Specifies the framing format to be used by the G.703 interface. Line Framing is only available when the standalone unit is configured as an LTU, AutoRate is disabled, and the DSL Line rate is 2064 kbps.

  • Page 118: H System Options Menu

    Load Configuration From SYSTEM OPTIONS DSL Mode: Test Timeout: Enable Test Duration (min): Telco Initiated Loopback: Enable Remote Telco Line Loopback: Disable August 1999 System Hotwire Model: 79xx (Models 7974, 7984) (Models 7974, 7984) Î Î Î Î MainMenu Exit 7970-A2-GB20-00...
  • Page 119 Telco-Initiated Tests Enable – The unit will respond to loopback commands. Disable – The unit will not respond to loopback commands. Remote Telco Line Loopback (Models 7974, 7984) Possible Settings: Enable, Disable Default Setting: Disable Determines if the unit will perform a Telco-initiated loopback on just the local unit or if the loopback will be performed on the remote DSL unit.

  • Page 120: H Communication Port

    Configuration Option Tables Communication Port For Communication Port Options, refer to Table A-6. To access the Communication Port screen, follow this menu selection sequence: Main Menu Port Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î main/config/commport Î...
  • Page 121 Configuration Option Tables Table A-6. Communication Port Options (2 of 3) Data Rate Possible Settings: 9.6, 14.4, 19.2, 28.8, 38.4, 115.2 Default Setting: 9.6 Specifies the communication port baud rate. 9.6 – Communication port rate is 9600 bps. 14.4 – Communication port rate is 14400 bps. 19.2 –...
  • Page 122 Configuration Option Tables Table A-6. Communication Port Options (3 of 3) Login Required (Terminal Use Only) 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 Creating a Login in Chapter 8, Security .

  • Page 123: Management And Communication Options Menu

    Management and Communication Options Menu The Management and Communication Options Menu includes the following: Telnet Session Communication Protocol General SNMP Management SNMP NMS Security SNMP Traps Telnet Session Options The Telnet Session configuration options control whether a Telnet session is allowed through an interconnected IP Network.
  • Page 124 Configuration Option Tables Table A-7. Telnet Session Options Telnet Session Possible Settings: Enable, Disable Default Setting: Enable Specifies if the unit will respond to a Telnet session request from a Telnet client on an interconnected IP network. Enable – Allows Telnet sessions between the unit and a Telnet client. Disable –...

  • Page 125: Communication Protocol Options

    Communication Protocol Options The Communication Protocol configuration options specify the information necessary to support the IP communication network, including IP address and link protocols. Initial values are determined by the configuration you currently have loaded. This screen does not appear when the unit is connected to a DSLAM card running in IP Conservative mode.
  • Page 126 Configuration Option Tables Table A-8. Communication Protocol Options (1 of 2) Node IP Address Possible Settings: 001.000.000.000 – 223.255.255.255 Default Setting: 000.000.000.000 Specifies the Node IP address. Node IP Address is only available when the unit is configured as an LTU. Address Field –...
  • Page 127 Table A-8. Communication Protocol Options (2 of 2) 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. Communication Port Subnet Mask is only used when the Port Use option on the Communication Port Options menu is set to Net Link.

  • Page 128: General Snmp Management Options

    Configuration Option Tables General SNMP Management Options To access the General SNMP Management Options screen, follow this menu selection sequence: Main Menu Management and Communication main/config/management/SNMP SNMP Management: Community Name 1: Name 1 Access: Community Name 2: Name 2 Access: Î...
  • Page 129 Configuration Option Tables Table A-9. General SNMP Management Options SNMP Management Possible Settings: Enable, Disable Default Setting: Disable Enables or disables the SNMP management features. Enable – Enables SNMP management capabilities. Disable – Disables SNMP management capabilities. 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.

  • Page 130: Snmp Nms Security Options

    Configuration Option Tables SNMP NMS Security Options To access the SNMP NMS Security Options screen, follow this menu selection sequence: Main Menu Management and Communication Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î...
  • Page 131 Configuration Option Tables Table A-10. 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. Enable – Security checking is performed on the IP address of SNMP management systems attempting to access the node.

  • Page 132: Snmp Traps Options

    Configuration Option Tables SNMP Traps Options To access the SNMP Traps Options screen, follow this menu selection sequence: Main Menu Management and Communication Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î main/config/management/trap Î...
  • Page 133 Table A-11. SNMP Traps Options (1 of 2) SNMP Traps Possible Settings: Enable, Disable Default Setting: Disable Controls the generation of SNMP trap messages. Enable – SNMP trap messages are sent out to SNMP managers. Disable – No SNMP trap messages are sent out. Number of Trap Managers Possible Settings: 1, 2, 3, 4, 5 Default Setting: 1...
  • Page 134 Configuration Option Tables Table A-11. SNMP Traps Options (2 of 2) Enterprise Specific Traps Possible Settings: Enable, Disable Default Setting: Disable Determines if SNMP traps are generated for enterprise-specific events. Enable – SNMP traps are generated for enterpriseSpecific events. NOTE: Disable –...

  • Page 135: Snmp Traps

    Standards Compliance for SNMP Traps SNMP Traps This section describes the unit’s compliance with SNMP standards and any special operational features for the SNMP traps supported. The Hotwire 7974 Standalone Termination Unit supports the following traps: warmStart authenticationFailure linkUp and linkDown...

  • Page 136: Linkup And Linkdown

    Standards Compliance for SNMP Traps linkUp and linkDown The link SNMP traps are: linkUp – The unit recognizes that one of the communication interfaces is operational. linkDown – The unit recognizes that one of the communication interfaces is not operational. The network and synchronous port interfaces (physical sublayer) are represented by an entry in the MIB-II interfaces table and supported by the DS1 MIB.
  • Page 137 Enterprise-Specific Traps EnterpriseSpecific traps indicates that an enterprise-specific event has occurred. The Specific-trap field identifies the particular trap that occurred. The following table lists the enterprise-specific traps supported by the unit: SNMP Trap enterprisePrimary ClockFail(1) enterprisePrimary ClockFailClear(101) enterpriseSelfTestFail(2) enterpriseDeviceFail(3) enterpriseTestStart(5) enterpriseConfig Change(6) enterpriseFallback...
  • Page 138 Standards Compliance for SNMP Traps There are no variable-bindings for enterpriseDeviceFail, enterprisePrimary ClockFail, enterpriseSecondaryClockFail, enterprisePrimaryClockFailClear, enterpriseSecondaryClockFailClear, and enterpriseConfigChange. The variable-binding for enterpriseSelfTestFail is devSelfTestResults. The following list describes the conditions that define enterpriseFallbackAutoRate and enterpriseFallbackAutoRateClear: enterpriseFallbackAutoRate Variable-Bindings ifIndex (RFC 1573) This object provides the index into the ifTable and potentially into tables in other MIBs.
  • Page 139 The tests that affect the enterpriseTestStart, enterpriseTestStop, and the variable-bindings are different for each particular interface. Diagnostic tests are only supported on the physical T1 network and user data port interfaces. The specific tests and variable-bindings are described in the following table: Interface DSL Network DSX-1 or...
  • Page 140 Standards Compliance for SNMP Traps Interface Synchronous Data Ports enterpriseTestStart/Stop Variable-Bindings ifIndex (RFC 1573) ifAdminStatus (RFC 1573) ifOperStatus (RFC 1573) ifTestType (RFC 1573) The following objects control tests in SNMP-managed devices: – noTest – Stops the test in progress. – testLoopDCLB – Initiates a Data Channel Loopback.
  • Page 141 Cables and Pin Assignments Overview The following sections provide pin assignments for: DSL Network Interface Cable COM Port Interface Cable Power Input Connector Optional Power Cable DSX-1/G.703 Network Interface EIA-530-A Port EIA-530-A-to-X.21 Interface EIA-530-A-to-RS-449 Interface EIA-530-A-to-V.35 Interface 7970-A2-GB20-00 August 1999...

  • Page 142: Dsl Network Interface Cable

    Cables and Pin Assignments DSL Network Interface Cable The DSL line interface cable is a 20-foot, 24 AWG solid, 2-twisted-pair cable that is RJ48C-to-RJ48C (Table C-1, Figure C-1). Table C-1. DSL Network Interface Connector Pin Number NOTE: A crossover cable (Pins 1, 2 to 4, 5) is required for connecting two M/HDSL Termination Units back-to-back.

  • Page 143: Com Port Interface Cable

    Cables and Pin Assignments COM Port Interface Cable The COM port connects to either a PC or to an ASCII terminal or printer for alarms. The COM port-to-PC cable is a 14-foot, 26 AWG, 8-conductor cable with an 8-position modular plug keyed connector and a DB9 socket connector (Figure C-2).
  • Page 144 Cables and Pin Assignments Table C-2. COM Port Connector (J6) Signal Reserved for future use DCE Received Data Signal Ground DCE Transmit Data DCE Data Terminal Ready DCE Carrier Detect DCE Request to Send Reserved for future use Direction to DTE (Out) to DTE (Out) —...

  • Page 145: Power Input Connector

    Power Input Connector The required input power connector leads are shown in Table C-3. Table C-3. DC Power Connector Signal +24 Vdc +24 Vdc Return Chassis Ground Optional Power Cable The optional power cable is a 14.5-foot, 18 AWG stranded cable. The connector is terminated at one end with a 6-position Molex 39-01-2060 connector.
  • Page 146 Cables and Pin Assignments DSX-1/G.703 Network Interface 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 (Table C-4, Figure C-4). The DSX-1 network interface is an RJ48C, 8-position, unkeyed modular connector for a 100-ohm balanced interface (Table C-4, Figure C-4).
  • Page 147 EIA-530-A Port The EIA-530-A Port interface connector information is shown in Table C-5. Table C-5. EIA-530-A Port Interface Connector Signal Shield Signal Common Signal Common Transmitted Data Received Data Request to Send Clear to Send Received Line Signal Detector DCE Ready DTE Ready Transmit Signal Element Timing (DTE Source)
  • Page 148 Cables and Pin Assignments EIA-530-A-to-X.21 Interface The EIA-530-A-to-X.21 adapter cable (Figure C-5) provides the X.21 interface shown in SIGNAL TD-A TD-B RD-A RD-B RXC-A RXC-B RTS-A RTS-B RLSD-A RLSD-B SIG. COMMON TT-A TT-B Figure C-5. EIA-530-A-to-X.21 (Cable Feature Number 7900-F1-505) Table C-6.
  • Page 149 Table C-6. X.21 Cable Interface Signal Signal Common Transmitted Data Received Data Request to Send Data Channel Received Line Signal Detector Transmit Signal Element Timing (DTE Source) Receiver Signal Element Timing (DCE Source) 7970-A2-GB20-00 Cables and Pin Assignments ITU-T Number Direction To DSU/CSU From DSU/CSU...
  • Page 150 Cables and Pin Assignments EIA-530-A-to-RS-449 Interface The EIA-530-A-to-RS-449 adapter cable (Figure C-6) provides the RS-449 interface shown in SIGNAL SHIELD TD-A TD-B RD-A RD-B TXC-A TXC-B RXC-A RXC-B RTS-A RTS-B CTS-A CTS-B RLSD-A RLSD-B SIG. COMMON RCV. COMMON TT-A TT-B SIG.
  • Page 151 Table C-7. RS-449 Cable Interface Signal Shield Signal Ground Receive Ground Send Common Send Data Receive Data Request to Send Clear to Send Receiver Ready Data Mode Terminal Ready Terminal Timing Send Timing Receive Timing Local Loopback Remote Loopback Test Mode 7970-A2-GB20-00 Cables and Pin Assignments Circuit...
  • Page 152 Cables and Pin Assignments EIA-530-A-to-V.35 Interface The EIA-530-A-to-V.35 adapter cable or adapter (Figure C-7) provides the V.35 interface shown in Pin 1 SIGNAL SHIELD TD-A TD-B RD-A RD-B TXC-A TXC-B RXC-A RXC-B RLSD SIG. COMMON TT-A TT-B SIG. COMMON Figure C-7. EIA-530-A-to-V.35 Adapter Cable (Feature Number 7900-F1-503) and C-12 Table C-8.
  • Page 153 Table C-8. V.35 Cable Interface Signal Shield Signal Common Transmitted Data Received Data Request to Send Clear to Send Data Channel Received Line Signal Detector Data Set Ready Data Terminal Ready Transmit Signal Element Timing (DTE Source) Transmit Signal Element Timing (DCE Source) Receiver Signal Element Timing (DCE Source)
  • Page 154 Cables and Pin Assignments This page intentionally left blank. C-14 August 1999 7970-A2-GB20-00...

  • Page 155: Technical Specifications

    Technical Specifications Specifications Size Weight Approvals Safety Certifications Power Cables and Cable Guide Physical Environment Operating temperature Storage temperature Relative humidity * Technical specifications are subject to change without notice. 7970-A2-GB20-00 Criteria* Width 7.25 inches (18.4 cm) Height 1.5 inches (3.8 cm) Length 9.4 inch (24.9 cm) Approximately 1.25 lbs.
  • Page 156 Technical Specifications August 1999 7970-A2-GB20-00...
  • Page 157 Glossary A random bit test 511 bytes in length. Alarm Indication Signal. A signal transmitted downstream instead of the normal signal to preserve transmission continuity and to indicate to the rest of the network that a fault exists. Also called a Blue Alarm. Alternate Mark Inversion.
  • Page 158 Glossary DSLAM Digital Subscriber Line Access Multiplexer. A platform for DSL modems that provides high-speed data transmission over traditional twisted-pair wiring. Data Set Ready. A signal from the modem to the DTE that indicates the modem is turned ON and connected to the DTE. DSX-1 Digital Signal Cross Connect level 1.
  • Page 159 frame relay A high-speed connection-oriented packet switching WAN protocol using variable-length frames. File Transfer Protocol. A TCP/IP standard protocol that allows a user on one host to access and transfer files to and from another host over a network, provided that the client supplies a login identifier and password to the server.
  • Page 160 Glossary receiver A circuit that accepts data signals from a transmitter. reset A reinitialization of the device that occurs at power-up or in response to a reset command. Repeater LoopBack. Loops the signal being sent to the network back to the DTE Drop/Insert and data ports after it has passed through the framing circuitry of the device.

  • Page 161: Telnet Session Options

    B-1 AutoRate ceiling (DSL Line Rate), A-3 Network Interface Options screen, A-2 switch setting Models 7974 and 7984, 4-5 Models 7975 and 7985, 4-8 Models 7976 and 7986, 4-10 cables, C-1 COM Port Interface Cable, C-3 COM Port-to-PC cable, C-3...
  • Page 162 Download Failed, status message, 5-4 DSL Line Rate effect on AutoRate, A-2 Network Interface Options screen, A-3 switch setting Models 7974 and 7984, 4-5 Models 7975 and 7985, 4-8 Models 7976 and 7986, 4-10 DSL Mode, A-13 DSL Port, LEDs, 5-16...
  • Page 163 LEDs, 5-16 LOS (Loss Of Signal), status message, 5-3 LOS alarm action, A-8 LTU, switch setting for Models 7974 and 7984, 4-5 Models 7975 and 7985, 4-8 Models 7976 and 7986, 4-10 7970-A2-GB20-00 main menu, 2-2, A-1...
  • Page 164 IP addresses, 9-1 Switchpack S1 Definitions, 4-9 switchpacks configuration using, 4-1 definitions Models 7974 and 7984, 4-4 Models 7975 and 7985, 4-6 Models 7976 and 7986, 4-9 enabling and disabling Models 7974 and 7984, 4-4 Models 7975 and 7985, 4-6...
  • Page 165 T1 network interface, pin assignments, C-6 Telco-initiated line loopback, 6-18 loopback, enable/disable, A-13 payload loopback, 6-19 remote line loopback, 6-19 Telnet session access, 8-1 access level, A-18 enable/disable, A-18 inactivity timeout, A-16, A-18 login required, A-18 options, A-17 terminal communication parameters, 3-4 connecting, 3-4 settings required, 3-4 terminal port, direct connection, 2-1...

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