Page 2 - Copyright
Printed on recycled paper A 7924-A2-GB20-30 October 1997 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 ...
Page 3 - Important Safety Instructions
Important Information B 7924-A2-GB20-30 October 1997 Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product or included in the manual. 2. Do not allow anything to rest on the power cord and do not locate the product where persons will walk on the ...
Page 4 - EMI Warnings
Important Information C 7924-A2-GB20-30 October 1997 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 againstharmful interference wh...
Page 5 - Contents; About This Guide; About HotWire Model 7924 Termination Units
i 7924-A2-GB20-30 October 1997 Contents About This Guide Document Purpose and Intended Audience v . . . . . . . . . . . . . . . . . . . . . . . . . Document Summary v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product-Related Documents vi . . . . . . . ...
Page 6 - ii; Monitoring the Unit
Contents ii 7924-A2-GB20-30 October 1997 5 Customizing V.35-Compatible Units Accessing Configuration Options 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Making Changes from the Terminal Interface 5-2 . . . . . . . . . . . . . . . . . . . . . . . Making Changes in Switchpa...
Page 7 - iii; Cable Pin Assignments; Switchpacks and Jumpers
Contents iii 7924-A2-GB20-30 October 1997 B Cable Pin Assignments Terminal Connection Cable Pin Assignments B-1 . . . . . . . . . . . . . . . . . . . . . . . HDSL Loop Connection Cable Pin Assignments B-2 . . . . . . . . . . . . . . . . . . . . . T1 Network Connection Cable Pin Assignments B-3 . . ....
Page 8 - Document Purpose and Intended Audience; Section
v 7924-A2-GB20-30 October 1997 About This Guide Document Purpose and Intended Audience This guide contains information needed to set up, configure, and operate HotWireModel 7924-A1 T1 HDSL termination units. It is designed for central officetechnicians or network engineers who have an understanding ...
Page 9 - Product-Related Documents; Document Number
About This Guide vi 7924-A2-GB20-30 October 1997 Section Description Chapter 6 Monitoring the Unit. Describes how to monitor unit status,LEDs, and network statistics. Also describes how to monitorthe status of the unit on the opposite side of the HDSLconnection. Chapter 7 Testing. Provides informati...
Page 10 - HotWire 7924-A1 Models and Features
1-1 7924-A2-GB20-30 October 1997 About HotWire Model 7924Termination Units 1 HotWire 7924-A1 Models and Features Products in the HotWire 7924 family provide “last mile/last kilometer” transport ofT1-compatible circuits between customer facilities and central site equipmentover 2- or 4-wire copper li...
Page 11 - Model Number
About HotWire Model 7924 Termination Units 1-2 7924-A2-GB20-30 October 1997 There are several versions of the Model 7924-A1, each supporting a differentinterface (DSX-1 or V.35) and power supply (120 Vac, 230 Vac, or – 48 Vdc): Model Number Features 7924-A1-201 1.544 Mb/s DSX-1 compatible. Connectio...
Page 12 - Typical Configurations; Campus Network Applications
About HotWire Model 7924 Termination Units 1-3 7924-A2-GB20-30 October 1997 Typical Configurations HotWire Model 7924 standalone units can be used in campus applications wherelong loop distances normally require the campus to contract with the localtelephone exchange carrier to deliver private line ...
Page 13 - T1 Extension to Customer Premises
About HotWire Model 7924 Termination Units 1-4 7924-A2-GB20-30 October 1997 HotWire Model 7924 standalone units are also ideal for delivering T1 servicesfrom a central site to the customer premises over long loop distances withoutrepeaters. Figure 1-2 shows a central-site application with a HotWire ...
Page 14 - Cellular Network Access; User Interface Types
About HotWire Model 7924 Termination Units 1-5 7924-A2-GB20-30 October 1997 Cellular network providers must lease large numbers of T1 circuits in order toconnect remote cell sites to mobile telephone switching offices (MTSOs). HotWire Model 7924 products provide an alternative to standard repeatered...
Page 15 - Installing the Unit; Overview; Package Checklist for HotWire Model 7924-A1
2-1 7924-A2-GB20-30 October 1997 Installing the Unit 2 Overview This chapter describes the procedure for installing a single standalonetermination unit using a 120 Vac or 230 Vac power supply (Model 7924-A1-20x or7924-A1-30x). If you have multiple standalone units at the same location, you may want ...
Page 16 - Connecting to the Network; Procedure; Connecting Power to the Unit; DSX-1-Compatible HotWire 7924 – Rear Panel; V.35-Compatible HotWire 7924 – Rear Panel
Installing the Unit 2-2 7924-A2-GB20-30 October 1997 Connecting to the Network Procedure 1. Connect one end of the supplied 14 ′ twisted-pair network cable into the rear panel HDSL jack. Connect the other end to your HDSL network interface. NOTE: Do not use a flat VF network cable, as this may sever...
Page 18 - Switching Between Terminal and Switchpack Modes
Using Terminal and Switchpack Modes 3-2 7924-A2-GB20-30 October 1997 Connect the 9-pin end of the terminal cable into a COM port on your PC. Plug theother end into the modular jack on the termination unit’s front panel. If your PCrequires a 25-pin connector to the COM port, see Appendix B, Cable Pin...
Page 19 - Accessing Configuration Options
4-1 7924-A2-GB20-30 October 1997 Customizing DSX-1-CompatibleUnits 4 Accessing Configuration Options This chapter explains how to change configuration options for HotWire 7924-A1standalone units that are DSX-1-compatible. Chapter 5 provides similar information for V.35-compatible units. Configuratio...
Page 20 - Making Changes from the Terminal Interface
Customizing DSX-1-Compatible Units 4-2 7924-A2-GB20-30 October 1997 This guide depicts the system terminal menus as they appear from a CP unit.This is the default configuration for Model 7924 standalone units. Making Changes from the Terminal Interface The Board Configuration menu displays the curre...
Page 23 - Displaying Switchpack Definitions
Customizing DSX-1-Compatible Units 4-5 7924-A2-GB20-30 October 1997 Making Changes in Switchpack Mode When operating in Switchpack Mode, you can change configuration options bymoving switches on the board hardware. To enable Switchpack Mode, refer to Switching Between Terminal and Switchpack Modes i...
Page 24 - Displaying Line Build-Out Definitions
Customizing DSX-1-Compatible Units 4-6 7924-A2-GB20-30 October 1997 Displaying Line Build-Out Definitions Enter 7 at the Config prompt to display the switchpack and board settings for linebuild-out. Use this information to change the line build-out parameter manually.(Switchpack definitions are also...
Page 27 - V.35-Compatible Units Configuration Options
Customizing V.35-Compatible Units 5-3 7924-A2-GB20-30 October 1997 Possible values for each parameter are listed in Table 5-1 . See Appendix A, Worksheets , for help in selecting the appropriate configuration options for your application. Table 5-1. V.35-Compatible Units Configuration Options 1) HDS...
Page 30 - What to Monitor
6-1 7924-A2-GB20-30 October 1997 Monitoring the Unit 6 What to Monitor This chapter presents information on how to access and monitor status andperformance statistics for the unit and its network connection. You can monitoroperations by viewing the: Board Status option from the Main Menu Performance...
Page 31 - Board Status; T1 STATUS displays one of the following:
Monitoring the Unit 6-2 7924-A2-GB20-30 October 1997 Board Status Board Status option from the Main Menu displays HDSL circuit operational status. Enter 1 at the Main Menu Command prompt to display board status. Command → 1 T1 STATUS: Network is UP LOOPBACK STATUS: OFF HDSL STATUS: LOOP A is UP, LOO...
Page 32 - Performance Statistics
Monitoring the Unit 6-3 7924-A2-GB20-30 October 1997 Performance Statistics Performance monitoring allows detailed observations of error conditions detectedon the circuits. Performance Monitor statistics can be displayed in defined timeperiods from the previous minute to the previous 24 hours, plus ...
Page 33 - Performance Statistics for DSX-1-Compatible Unit
Monitoring the Unit 6-4 7924-A2-GB20-30 October 1997 stats → 1 Current 1 minute: HDSL Errors: T1 Errors: FAW LoopA – 0 BPV – 0 FAW LoopB – 0 CRC – 0 CRC LoopA – 0 MOS – 0 CRC LoopB – 0 FEBE LoopA – 0 FEBE LoopB – 0 Previous 1 minute: FAW LoopA – 0 BPV – 0 FAW LoopB – 0 CRC – 0 CRC LoopA – 0 MOS – 0 ...
Page 34 - Remote Unit Information
Monitoring the Unit 6-5 7924-A2-GB20-30 October 1997 The type of statistics displayed under the T1 Errors column depends on the typeof framing selected. When the unit is configured for D4 framing, FAS (FrameAlignment Signal) errors are reported. When the unit is configured for ESFframing, CRC (Cycli...
Page 35 - Front Panel LEDs; LED
Monitoring the Unit 6-6 7924-A2-GB20-30 October 1997 Front Panel LEDs DSX-1-Compatible Unit Upon power up, the first three LEDs blink in sequence, indicating a successfulstart configuration. The green PWR LED lights whenever power is applied to theboard. Loop LEDs blink until the loop has been synch...
Page 37 - Testing; Detecting a Problem; Understanding Loopback Tests
7-1 7924-A2-GB20-30 October 1997 Testing 7 Detecting a Problem The unit can detect and report problem conditions and perform diagnostic tests.The unit offers a number of indicators to alert you to possible problems, asdescribed in Chapter 6, Monitoring the Unit : Front Panel LEDs Board status and pe...
Page 38 - Local Loopbacks; Local Loopback, Initiated at the CO Unit; Local Loopback, Initiated at the CP Unit
Testing 7-2 7924-A2-GB20-30 October 1997 Local Loopbacks When a local loopback is enabled, the red Loop Bk LED on the front panel ofthe initiating unit lights up and remains lit until the loopback is disabled. The data flow is indicated by the bold thick arrows in Figures 7-1 and 7-2 . When the CO i...
Page 39 - Remote Loopbacks; Remote Loopback, Initiated at the CO Unit; Remote Loopback, Initiated at the CP Unit
Testing 7-3 7924-A2-GB20-30 October 1997 Remote Loopbacks When a remote loopback is enabled, the red Loop Bk LED on the front panelof the remote-end unit (CO or CP) lights up and remains lit until the loopbackis disabled. The loopback LED on the initiating unit does not light. A message appears on t...
Page 40 - Starting and Stopping Loopbacks
Testing 7-4 7924-A2-GB20-30 October 1997 Starting and Stopping Loopbacks To start or stop a local loopback test, enter 5 at the Main Menu Commandprompt. Command → 5 Local Loopback is Enabled! Command → 5 Local Loopback is Disabled! To start or stop a remote loopback test, enter 6 at the Main Menu Co...
Page 41 - Resetting the Unit
Testing 7-5 7924-A2-GB20-30 October 1997 Resetting the Unit To reset the board, enter 4 at the Main Menu Command prompt. This isequivalent to cycling the power. Command → 4 Reset will bring the loops down. Are you sure? (y/n) Command → If “y” is selected, the Main Menu reappears, the loops go down, ...
Page 42 - Worksheets
A-1 7924-A2-GB20-30 October 1997 Worksheets A Overview The worksheets in this appendix show the correct configuration settings based onthe types of units (DSX-1-compatible or V.35-compatible) on either end of theHDSL connection. There are two combinations of the two types of units: DSX-1-compatible ...
Page 45 - Unframed Operation
Worksheets A-4 7924-A2-GB20-30 October 1997 Unframed Operation Some units do not support unframed operation. To determine whether or not yourDSX-1-compatible unit supports unframed operation when connected to aV.35-compatible unit, all three of the following conditions must be true: 1. The DSX-1-com...
Page 46 - DSX-1-Compatible Units Configuration Worksheet; V.35-Compatible Units Configuration Worksheet
Worksheets A-5 7924-A2-GB20-30 October 1997 DSX-1-Compatible Units Configuration Worksheet Board Configuration Configuration Option Settings Default in Bold Card Type CP, CO Loops Enabled Dual, Single T1 Line Encode B8ZS, AMI Framing D4, Extended Superframe, Unframed Line Build Out 1) 0 to 133 feet ...
Page 48 - HDSL Loop Connection Cable Pin Assignments; Pin
Cable Pin Assignments B-2 7924-A2-GB20-30 October 1997 If your PC’s COM port requires a 25-pin D-shell connector, the cable must usethe following pin assignments. 97-15442-01 1 4 5 7 8 2 3 7 6 8 20 4 5 Modular Pin 25-Pin D-Shell Pin RXD TXD GND TXD RXD GND DSR DCD DTR RTS CTS HDSL Loop Connection Ca...
Page 49 - T1 Network Connection Cable Pin Assignments
Cable Pin Assignments B-3 7924-A2-GB20-30 October 1997 T1 Network Connection Cable Pin Assignments The modular connector that plugs into the rear panel of DSX-1-compatible unitshas the following pin assignments. Pin Signal 1 Tx Ring 2 Tx Tip 3 open 4 Rx Ring 5 Rx Tip 6 – 8 open NOTE: Pin 1 is on the...
Page 50 - V.35 Connection Cable Pin Assignments
Cable Pin Assignments B-4 7924-A2-GB20-30 October 1997 V.35 Connection Cable Pin Assignments The connector that plugs into the rear panel of V.35-compatible units has thefollowing pin assignments. CCITTCode Pin Name DirectionDCE DTE Function Description 101 A PG Protective Ground Machine ground 102 ...
Page 51 - Jumper
C-1 7924-A2-GB20-30 October 1997 Switchpacks and Jumpers C DSX-1-Compatible Units Use Figure C-1 to assist you in locating the switchpacks and jumpers on the board. The jumper and switchpack detailed in Figure C-1 are used to change configuration options. All other jumpers (listed below) must remain...
Page 52 - DSX-1-Compatible Unit Switchpack and Jumper Locations
Switchpacks and Jumpers C-2 7924-A2-GB20-30 October 1997 97-15379-02 P11 Switchpack S1 VT100 Terminal Modular Jack S1 HDSL Line Jack P9 P8 P12 P3 Jumper P11 Position 1 2 3 4, 5, 6 7, 8 Settings* OFF = CPON = CO OFF = AMI line encodingON = B8ZS line encoding OFF = Loops A and BON = Loop A 000 = 0–133...
Page 54 - V.35-Compatible Unit Switchpack and Jumper Locations
Switchpacks and Jumpers C-4 7924-A2-GB20-30 October 1997 97-15524-01 S1 S2 P8 V.35 Switchpack S1 Switchpack S2 Jumper P8 VT100 Terminal Modular Jack HDSL Line Jack P4 P1 P2 P10 P11 P9 P5 Position 1 2 3 4, 5 6, 7, 8 Settings* OFF = CPON = CO OFF = Loops A and BON = Loop A unused 10 = Loop Clock unuse...
Page 55 - Glossary
GL-1 7924-A2-GB20-30 October 1997 Glossary Alternate Mark Inversion coding format. Bipolar Violation. A type of error detected by using a modified bipolar signaling method inwhich a control code is inserted. Used with AMI coding format. Bipolar with eights and Zeroes Substitution. An encoding scheme...
Page 57 - Index
IN-1 7924-A2-GB20-30 October 1997 Index A AIS (alarm indication signal), 7-2, 7-3 AMI line encoding, 4-3 B B8ZS line encoding, 4-3 board layout DSX1 compatible unit, C-2 V.35 compatible unit, C-4 board status, 6-2 for remote unit, 6-5 C cables connecting power, 2-2 DSX-1 connection, 2-2 HDSL loop co...
