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Paradyne HOTWIRE 7924 User Manual

T1 and e1 hdsl nest card termination units
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AREA CODE CHANGE
Please note that the area code for
Paradyne Corporation in Largo, Florida
has changed from 813 to 727.
For any Paradyne telephone number that
appears in this manual with an 813 area
code, dial 727 instead.

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Summary of Contents for Paradyne HOTWIRE 7924

  • Page 1 AREA CODE CHANGE Please note that the area code for Paradyne Corporation in Largo, Florida has changed from 813 to 727. For any Paradyne telephone number that appears in this manual with an 813 area code, dial 727 instead.
  • Page 2 MODELS 7924 AND 7925 T1 AND E1 HDSL NEST CARD TERMINATION UNITS USER’S GUIDE Document No. 7920-A2-GB20-10 August 1997...
  • Page 3 Copyright 1997 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 Avenue North, P.O.
  • Page 4 Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product or included in the manual. 2. This product is intended to be used with a 3-wire grounding type plug – a plug which has a grounding pin. This is a safety feature.
  • Page 5 Important Regulatory 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 6: Table Of Contents

    Contents About This Guide Document Purpose and Intended Audience Document Summary Product-Related Documents About HotWire Models 7924 and 7925 Nest Card Termination Units HotWire Model 7924 and 7925 Features HotWire Model 7924 Standard Features Hotwire Model 7925 Standard Features HotWire Model 7924 Typical Configurations...
  • Page 7 Contents Monitoring Nest Card Termination Units What to Monitor Front Panel LEDs HotWire Model 7924 Worksheets Overview DSX-1 to DSX-1 Configuration DSX-1 Nest-to-Standalone V.35 Configuration Unframed Operation HotWire 7924 Configuration Worksheet HotWire Model 7925 Worksheets Overview G.703-to-G.703 Configuration G.703 to V.35 Configuration...

  • Page 8: About This Guide

    Document Purpose and Intended Audience This guide describes the configuration, installation, and maintenance procedures for HotWire Model 7924-B1 and 7925-B1 T1 and E1 HDSL Nest Card Termination Units. It is expected that readers of this document are central-site or special-service...
  • Page 9 7925-A2-GB20 To order additional product documentation, refer to Information Description HotWire Model 7924 Worksheets. Contains all the configuration options, default settings, and possible settings to use for planning. HotWire Model 7925 Worksheets. Contains all the configuration options, default settings, and possible settings to use for planning.

  • Page 10: About Hotwire Models 7924 And 7925 Nest Card Termination Units

    T1 and E1 spans and European Telecommunications Standards Institute (ETSI) loop standards. This chapter provides a general overview of the HotWire Models 7924 and 7925 nest card termination units, including standalone units (A1) and nest-mounted termination units (B1).

  • Page 11: Hotwire Model 7925 Standard Features

    You can order HotWire 7924 and 7925 products as standalone units (7924-A1/7925-A1) or as nest-mounted circuit card assemblies (CCAs) (7924-B1/7925B1) that fit in the HotWire 7900 Nest. This guide describes the installation and maintenance procedures for the nest-mounted CCAs, Models 7924-B1 and 7925-B1. See Guide for information on user manuals for the standalone units.
  • Page 12 In each pair, one unit is configured as a central site and the other as the remote customer premises. Figure 1-3. Campus Network Applications HotWire Model 7924 standalone units are ideal for delivering T1 services from a central site to the customer premises over long loop distances without repeaters. 7920-A2-GB20-10...

  • Page 13: Hotwire Model 7925 Typical Configurations

    About HotWire Models 7924 and 7925 Nest Card Termination Units HotWire Model 7925 Typical Configurations Figure 1-4 HotWire Model 7925 nest card termination units. The nest card termination units each terminate a single subscriber line in the central site. Each line is then converted to a G.703 interface for connection to other central-site equipment,...
  • Page 14 Each HotWire Model 7924 and 7925 nest card termination unit is configured at the factory to operate at the central site (CO) of a T1 or E1 HDSL connection.

  • Page 15: User Interfaces

    About HotWire Models 7924 and 7925 Nest Card Termination Units User Interfaces There are two types of user interfaces to the nest card termination units: Switches and jumpers (refer to Front Panel LED status indicators (refer to If you have an HTU-M or HTU-S maintenance processor, you can also monitor...

  • Page 16: Installing Hotwire Nest Card Termination Units

    Installing HotWire Nest Card Termination Units Package Checklist Verify that your package contains the following: The correct number of HotWire Models 7924 or 7925 nest card termination units (verify this with your packing list) Warranty card Inspect the Shipping Container Inspect the shipping container for signs of damage.

  • Page 17: Installing Nest Card Termination Units

    Installing HotWire Nest Card Termination Units Installing Nest Card Termination Units It is assumed that you have already installed the HotWire Model 7900 Nest and associated power supply in a standard equipment rack, and that all network connections have been made. Installation of the optional HotWire 7900 Basic Maintenance Processor (HTU-M or HTU-S) is described in a separate user’s guide.

  • Page 18: Installing Nest Filler Panels

    Installing Nest Filler Panels Nest filler panels are required to be installed in slots that do not contain nest cards. WARNING: Front Panel Fillers are required to be installed for EMI safety purposes. Install nest filler panels to cover all nest card slots that do not contain nest cards.

  • Page 19: Customizing Hotwire 7924 Nest Card Termination Units

    Changing Your Configuration Options This chapter provides instructions on how to change or verify the configuration options for DSX-1-compatible HotWire 7924 T1 nest cards. configuration options for G.703-compatible HotWire 7925 E1 nest cards. Configuration option settings determine how the unit operates. You can change the unit’s configuration options by changing switchpack and jumper settings on...

  • Page 20: Switchpack And Jumper Locations

    Customizing HotWire 7924 Nest Card Termination Units Switchpack and Jumper Locations Figure 3-1 Figure 3-1. HotWire 7924 Nest Card Switchpack and Jumper Locations Pin 1 on jumpers is labeled on the board. The ON position is labeled on the switchpack.

  • Page 21: Switchpack Definitions

    * Some earlier units do not support unframed operation with V.35-compatible units. To determine if your DSX-1-compatible unit supports unframed operation when connected to a V.35-compatible standalone unit, refer to Appendix A, HotWire Model 7924 Worksheets . 7920-A2-GB20-10 Customizing HotWire 7924 Nest Card Termination Units .

  • Page 22: Jumper Positions

    Customizing HotWire 7924 Nest Card Termination Units Jumper Positions The following table provides the correct default jumper positions for your nest card. Jumper Position No jumper 1–2 2–3 No jumper 1–2 1–2 1–2 August 1997 7920-A2-GB20-10...

  • Page 23: Customizing Hotwire 7925 Nest Card Termination Units

    This chapter provides instructions on how to change or verify configuration options for G.703-compatible HotWire 7925 E1 nest cards. configuration options for DSX-1-compatible HotWire 7924 T1 nest cards. Configuration option settings determine how the unit operates. You can change the unit’s configuration options by changing switchpack and jumper settings on the nest card.

  • Page 24: Switchpack And Jumper Locations

    Customizing HotWire 7925 Nest Card Termination Units Switchpack and Jumper Locations Figure 4-1 Figure 4-1. HotWire 7925 Nest Card Switchpack Locations and Jumper Positions Pin 1 on jumpers is labeled on the board. The ON position is labeled on the switchpack. The jumper on P12 is positioned at the factory on Pins 1–2 (switchpack S1 disabled).

  • Page 25: Switchpack Definitions

    Switchpack Definitions Change configuration options by moving switchpack S1 DIP switches on the nest card hardware. Switchpack S1 Definitions Position 7920-A2-GB20-10 Customizing HotWire 7925 Nest Card Termination Units # . . . Allows you to . . . Control whether the board is an HTU-C (CO) or an HTU-R (CP). OFF = CP ON = CO Control enabling and disabling of zeroes suppression in the line code.
  • Page 26 Customizing HotWire 7925 Nest Card Termination Units Jumper Positions The following table provides the correct default jumper positions for your nest card. Jumper Position No jumper 1–2 2–3 1–2 1–2 No jumper 1–2 1–2 1–2 August 1997 7920-A2-GB20-10...

  • Page 27: What To Monitor

    Termination Units What to Monitor Front panel LEDs on each HotWire Model 7924 and 7925 Nest Card Termination Unit provide status information about the nest card, HDSL local loop, and the T1 or E1 network interface. This chapter presents information on how to monitor and interpret the HotWire 7924 and 7925 nest card termination unit front panel LEDs.

  • Page 28: Front Panel Leds

    Monitoring Nest Card Termination Units Front Panel LEDs When power is applied to the nest card, the top three LEDs (LOCAL, REMOTE, and LOOP BK) blink once in sequence and then remain off, indicating a successful start configuration..LOCAL REMOTE LOOP BK...

  • Page 29: Overview

    HotWire Model 7924 Worksheets Overview The following worksheets illustrate HotWire 7924-B1 configuration settings based on the types of connection. There are two connection combinations for HotWire 7924 nest card termination units: DSX-1-compatible units on both ends V.35-compatible unit on the customer premises (CP) end, DSX-1-compatible...

  • Page 30: Dsx-1 Nest-To-Standalone V.35 Configuration

    HotWire Model 7924 Worksheets To connect two DSX-1-compatible units, configure the units as follows (factory defaults are in bold): Configuration Option Card Type Loops Enabled T1 Line Encode Framing Line Build-Out DSX-1 Nest-to-Standalone V.35 Configuration To connect a V.35-compatible standalone unit on the CP side and a...

  • Page 31: Unframed Operation

    5) 533 to 655 feet UnFramed Operation for unframed operation considerations. DSX-1 T1 DS0s Used 1, 2 1 – 3 1 – 4 1 – 6 1 – 8 1 – 12 1 – 16 August 1997 HotWire Model 7924 Worksheets Figure 3-1...

  • Page 32: Hotwire 7924 Configuration Worksheet

    2) 133 to 266 feet 3) 266 to 399 feet 4) 399 to 533 feet 5) 533 to 655 feet D4, Extended Super Frame, Unframed Customizing HotWire 7924 Nest Card Termination Units UnFramed Operation for unframed operation considerations. Settings (1, 2) Not used...

  • Page 33: G.703-To-G.703 Configuration

    HotWire Model 7925 Worksheets Overview The following worksheets illustrate HotWire 7925-B1 configuration settings based on the types of connection. There are two connection combinations for HotWire 7925 nest card termination units: G.703-compatible units on both ends V.35-compatible unit on the CP end, G.703-compatible unit on the CO end G.703-to-G.703 Configuration Multiplexer Customer Premises...
  • Page 34 HotWire Model 7925 Worksheets To connect two G.703-compatible units, configure the units as follows (factory defaults are in bold): Configuration Option Card Type Loops Enabled E1 Line Encode Framing Line Build-Out Refer to build-out. G.703-to-V.35 Configuration To connect a V.35-compatible standalone unit on the CP side and a G.703-compatible unit on the CO side, configure the units as follows (factory defaults are in bold): Configuration...
  • Page 35 Configuration Option Framing E1 Line Encode Line Build-Out Refer to build-out. When the V.35 payload rate is set for less than 2048 Kbps, that payload rate determines which E1 DS0’s are used, as follows: V.35 Payload Rate 1 (64 Kbps) 2 (128 Kbps) 3 (192 Kbps) 4 (256 Kbps)

  • Page 36: Hotwire 7925 Configuration Worksheet

    HotWire Model 7925 Worksheets HotWire 7925 Configuration Worksheet Nest Card Configuration Configuration Option HDSL Card Type Loops Enabled E1 Line Encode Framing Line Build Out Refer to Chapter 4, switchpack location and configuration options. Nest Card Configuration Jumpers Settings CP, CO Loops A and B, Loop A HDB3, AMI Framed, Unframed...
  • Page 37 Glossary Alternate Mark Inversion coding format. Bipolar Violation. A type of error detected by using a modified bipolar signaling method in which a control code is inserted. Bridged tap A section of cable that was used to provide phone service to a home or business that is connected to a live copper wire but is not terminated.

  • Page 38: August 1997 7920-A2-Gb20

    Glossary HDB3 High Density Bipolar 3 coding format. HDSL High-bit-rate Digital Subscriber Loop. Provides high bandwidth, bi-directional transmission over copper wire for both T1 and E1 services. Host Termination Unit. A generic reference to either an HTU-C or HTU-R module. HTU-C Host Termination Unit –...
  • Page 39 Model 7925 switchpack S1 , 4-2 Configuration option overview G.703-to-G.703 , B-1 G.703-to-V.35 , B-2 Configuration Options Table, Model 7924 T1, A-4 Configuration Options, Model 7925 E1, B-1 Configuration options, 3-1, 4-1 Model 7924, A-1 Model 7924 T1 nest cards, 3-1...
  • Page 40 Related documents, v Safety instructions, B Sales information, A Service information, A Switchpack definitions, 3-3, 4-3 Model 7924 switchpack S1 definitions, 3-3 Model 7925 switchpack definitions, 4-3 Switchpack locations, 4-2 Model 7924 switchpack S1 , 3-2 Model 7925 switchpack S1, 4-2 IN-2 Unframed Operation, Restrictions on DSX-1 to V.35...

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