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Paradyne HOTWIRE 7924 User Manual

Standalone t1 hdsl termination unit
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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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  • 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 MODEL 7924 STANDALONE T1 HDSL TERMINATION UNIT USER’S GUIDE Document No. 7924-A2-GB20-20 August 1997...
  • Page 3 Via the Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com Via Telephone: Call our automated call system to receive current information via fax or to speak with a company representative. — Within the U.S.A., call 1-800-870-2221 — International, call 813-530-2340 Printed on recycled paper August 1997 7924-A2-GB20-20...

  • Page 4: Important Safety Instructions

    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. 7924-A2-GB20-20 August 1997 Important Information...
  • Page 5 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. August 1997 7924-A2-GB20-20...

  • Page 6: Table Of Contents

    Contents About This Guide Document Purpose and Intended Audience Document Summary Product-Related Documents About HotWire Model 7924 Termination Units HotWire 7924-A1 Models and Features Typical Configurations User Interface Types Installing the Unit Overview Package Checklist for HotWire Model 7924-A1 Connecting to the Network...
  • Page 7 ......... . 7924-A2-GB20-20...
  • Page 8 Index 7924-A2-GB20-20 ........

  • Page 9: About This Guide

    Chapter 6 7924-A2-GB20-20 Description About HotWire Model 7924 Termination Units . Describes the features of each version of the Model 7924 and typical configurations. Installing the Unit . Describes how to install the unit and make connections. Using Terminal and Switchpack Modes. Provides instructions for connecting a VT100-compatible terminal user interface.
  • Page 10 HotWire Models 7900 10-Slot Standalone Shelf Installation Instructions HotWire Model 7900 Equipment Nest and Options Installation Guide HotWire Models 7924 and 7925 T1 and E1 HDSL Nest Cards User’s Guide HotWire Models 7915 E1 SDSL Termination Unit User’s Guide HotWire Models 7925 E1 HDSL Termination Unit User’s Guide...

  • Page 11: Hotwire 7924-A1 Models And Features

    Local and remote alarm surveillance Local and remote T1 and HDSL performance monitoring HotWire 7924 may be ordered either as a standalone unit (7924-A1-xxx) or as a nest-mounted card (7924-B1-xxx) that fits in a HotWire 7900 nest. This guide describes the installation and maintenance procedures for the standalone version, Model 7924-A1-xxx.
  • Page 12 About HotWire Model 7924 Termination Units There are several versions of the Model 7924-A1, each supporting a different interface (DSX-1 or V.35) and power supply (120 Vac, 220 Vac, or – 48 Vdc): Model Number 7924-A1-201 7924-A1-202 7924-A1-301 7924-A1-302 7924-A1-501...

  • Page 13: Typical Configurations

    (CO) and the other is the customer premises (remote) unit (CP). Each HotWire Model 7924 standalone unit is configured at the factory to operate at the CP side of an T1 HDSL connection. However, you can easily reconfigure a...
  • Page 14 Figure 1-2 HotWire Model 7924 nest cards. The nest cards at the central site each terminate a single HDSL subscriber line. Each line is then converted to a DSX-1 interface for connection to other central office equipment, such as a digital cross-connect system (DCS).

  • Page 15: User Interface Types

    Cellular network providers must lease large numbers of T1 circuits in order to connect remote cell sites to mobile telephone switching offices (MTSOs). HotWire Model 7924 products provide an alternative to standard repeatered T1 services. Figure 1-3. Cellular Network Access...

  • Page 16: Overview

    Overview This chapter describes the procedure for installing a single standalone termination unit using a 120 Vac or 230 Vac power supply (Model 7924-A1-20x or 7924-A1-30x). If you have multiple standalone units at the same location, you may want to consider installing the units in a HotWire Model 7900 10-Slot Standalone Shelf.

  • Page 17: Connecting To The Network

    2. Connect a V.35 or DSX-1 interface cable into the appropriate connector on the rear panel. Connect the other end to your V.35 or DSX-1 equipment. Connecting Power to the Unit DSX-1-Compatible HotWire 7924 – Rear Panel V.35-Compatible HotWire 7924 – Rear Panel As described in on your power source (120 Vac, 230 Vac, or –...

  • Page 18: Choosing An Interface Mode

    Switchpack Mode. Connecting to a System Terminal An optional system maintenance terminal may be attached to your Model 7924 standalone termination unit through the modular jack on the front panel. You may have terminals attached to both endpoints (CO and CP).

  • Page 19: Switching Between Terminal And Switchpack Modes

    6. Power up the board to reset and enable the new configuration. (for DSX-1-compatible units) or Chapter 5 Switchpacks and Jumpers August 1997 Cable Pin Assignments , for the Chapters 4 for the (for V.35-compatible units) , for jumper locations on your Switchpacks and 7924-A2-GB20-20...

  • Page 20: Accessing Configuration Options

    Units Accessing Configuration Options This chapter provides instructions on how to change configuration options for HotWire 7924 standalone units that are DSX-1-compatible. similar information for V.35-compatible units. Configuration option settings determine how the unit operates. You can change a unit’s configuration options by: Selecting the Board Configuration branch of the Main Menu while in Terminal Mode.

  • Page 21: Making Changes From The Terminal Interface

    Menu”. These options allow you to display information about the far-end unit. 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 current board software and hardware settings.
  • Page 22 193rd bit providing timing and other functions. An enhanced version of D4. Unframed – Framing is disabled. (When connecting to a V.35-compatible unit, refer to page A-4 7924-A2-GB20-20 , for help in selecting the appropriate configuration options for your for more information before selecting this option.)

  • Page 23: Making Changes In Switchpack Mode

    (for –7.5, –15, and –22.5 dB) are not designed for use with this product. Use of these other options will cause a weak signal and degrade performance. Select from options 1 through 5 only. Switching Between Terminal and in Chapter 3. , to locate switchpack S1. August 1997 Switchpacks and 7924-A2-GB20-20...

  • Page 24: Displaying Switchpack Definitions

    Enter 7 at the Config prompt to display the switchpack and board settings for line build-out. This information is useful if you need to change the line build-out parameter manually. (Switchpack definitions are also listed in Appendix C, Switchpacks and Jumpers 7924-A2-GB20-20 OFF=CP, ON=CO OFF/ON OFF=Dual, ON=Single...
  • Page 25 OFF=0, ON=1 OFF=0, ON=1 Bit 1 Bit 0 Application 0 to 133 feet – 0dB 133 to 266 feet 266 to 399 feet 399 to 533 feet 533 to 655 feet -7.5 dB -15 dB -22.5 dB August 1997 ******* 7924-A2-GB20-20...
  • Page 26 Units Accessing Configuration Options This chapter provides instructions on how to change configuration options for HotWire 7924-A1 models that are V.35-compatible. information for DSX-1-compatible units. Configuration option settings determine how the unit operates. You can change a unit’s configuration options by: Selecting the Board Configuration branch of the Main Menu while in Terminal Mode.
  • Page 27 Loopback. 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 current board software and hardware settings.
  • Page 28 This menu option is described in page 5-5. 7924-A2-GB20-20 , for help in selecting the appropriate configuration options for your V.35-Compatible Units Configuration Options 6 – 8 x 64 (512 kbps) 7 –...

  • Page 29: A2-Gb20

    HDSL loop for the clock source. 5. Replace the enclosure cover and power up the board to reset and enable the new configuration. Switching Between Terminal and in Chapter 3. August 1997 Switchpacks and Jumpers 7924-A2-GB20-20...
  • Page 30 Switchpack definitions are also listed in Appendix C, and Jumpers Config Switch pack 1 definition: 6–8 Switch pack 2 definition: All switches off = 1536 Kbps (24x64) Config 7924-A2-GB20-20 – CO/CP – Dual/Single Loop Mode – Not Used –...

  • Page 31: Monitoring The Unit

    Command T1 STATUS: LOOPBACK STATUS: OFF HDSL STATUS: S/N RATIO: Command Board Status for DSX-1-Compatible Unit 7924-A2-GB20-20 Network is UP LOOP A is UP, LOOP B is UP Loop A = 44.0 dB, Loop B = 43.5 dB August 1997...

  • Page 32: Performance Statistics

    There is no verification on this command — be sure you want to clear all statistics before pressing 7! Enter 2 at the Command prompt to enter the Performance Monitor menu. ACTIVE ACTIVE LOOP A is UP, LOOP B is UP Loop A = 44.0 dB, Loop B = 43.5 dB. August 1997 7924-A2-GB20-20...
  • Page 33 When the unit is configured for D4 framing, FAS (frame alignment signal) errors are reported. When the unit is configured for ESF framing, CRC errors are reported. Refer to the 7924-A2-GB20-20 T1 Errors: – BPV –...

  • Page 34: Remote Unit Information

    To access the HTUC or HTUR menu, enter 7 at the Command prompt. ***** HTUC Menu ***** 1) Board Status 2) Performance Monitor 3) Board Configuration 4) Line Build Out Configuration Help ?) Redisplays this Menu Q) Quit HTUC Command Glossary for definitions of the types of errors reported. August 1997 7924-A2-GB20-20...

  • Page 35: Front Panel Leds

    TERMINAL Local Remote Loop Bk FAIL Loop A Loop B 7924-A2-GB20-20 NETWORK SYSTEM HDSL Meaning The local T1 interface has a loss of signal. The remote T1 interface has a loss of signal. A loopback has been initiated for testing the equipment connected to this Testing , unit.

  • Page 36: V.35-Compatible Unit

    When blinking, this LED indicates HDSL Loop B is synchronizing with the far-end unit (as occurs when the units are coming up after a reset). When not lit or blinking, Loop B is enabled and synchronized. August 1997 7900 97-15313 7924-A2-GB20-20...

  • Page 37: Testing

    In a remote loopback, the data is passed on to the remote (far-end) unit and then reflected back. Loopback tests are initiated through the terminal interface from either the the CO or CP side of the HDSL connection. 7924-A2-GB20-20 Monitoring the Unit Figures 7-1 August 1997...

  • Page 38: Local Loopbacks

    7900 7900 Loop Bk LED lights AIS = Alarm Indication Signal Terminal E1 HDSL E1 HDSL 7900 7900 August 1997 Figures 7-1 and 7-2. Diagnostic Equipment 7900 7900 97-15514-01 Diagnostic Equipment 7900 7900 Loop Bk LED lights 97-15518-01 Terminal 7924-A2-GB20-20...

  • Page 39: Remote Loopbacks

    V.35-compatible CP units.) Diagnostic Equipment Figure 7-3. Remote Loopback, Initiated at the CO Unit Diagnostic Equipment Figure 7-4. Remote Loopback, Initiated at the CP Unit 7924-A2-GB20-20 E1 HDSL E1 HDSL 7900 7900 Loop Bk LED lights AIS = Alarm Indication Signal...

  • Page 40: Starting And Stopping Loopbacks

    Only one loopback may be run at a time. If a loopback is already enabled, the following error message appears and no other loopback may be started until the first loopback is disabled: “CANNOT EXECUTE COMMAND! Current loopbacks must be removed first.” August 1997 7924-A2-GB20-20...

  • Page 41: Resetting The Unit

    Reset will bring the loops down. Are you sure? (y/n) Command If “y” is selected, the Main Menu reappears, the loops go down, and the FAIL (reset) LED lights. Pressing any key other than “y” is interpreted as an “n”. 7924-A2-GB20-20 August 1997 Testing...

  • Page 42: Worksheets

    V.35-compatible unit on the CP end, DSX-1-compatible unit on the CO end NOTE: HotWire 7924 V.35-compatible units are not designed for use at both ends of an HDSL connection. If your application requires V.35 equipment at both ends of an HDSL connection, consider using two Hotwire 7925 E1 HDSL termination units.

  • Page 43: Dsx-1-To-Dsx-1 Configuration

    Must be same as CP side Enter 5 at the Config command prompt. Select from the following options: 1) 0 to 133 ft 2) 133 to 255 ft 3) 266 to 399 ft 4) 399 to 533 ft 5) 533 to 699 ft 7924-A2-GB20-20...

  • Page 44: Dsx-1-To-V.35 Configuration

    (for Switchpack mode defaults, see Configuration Option Card Type Loops Enabled Payload Rate Framing T1 Line Encode Line Build-Out 7924-A2-GB20-20 Appendix V.35-Compatible Unit DSX-1-Compatible Unit (Customer Premises) (Central Site) Dual (Loops A & B) or Must be same as CP side Single (Loop A) 1 –...

  • Page 45: Unframed Operation

    Main menu (a system terminal is required). If you have a DSX-1-compatible nest-mounted unit, refer to the HotWire Models 7924 and 7925 T1 and E1 HDSL Nest Cards User’s Guide . 2. The V.35-compatible unit must have an HDSL firmware revision number of three (03) or higher.

  • Page 46: Dsx-1-Compatible Units Configuration Worksheet

    Board Configuration Configuration Option Card Type Loops Enabled Payload Rate Options 8 and 9 require Loops A and B. 7924-A2-GB20-20 Settings CP, CO Loops A and B, Loop A B8ZS, AMI D4, Extended Superframe, Unframed 1) 0 to 133 feet – 0 dB...

  • Page 47: Cable Pin Assignments

    This section defines the pin assignments for the terminal cable from the front panel modular jack to your PC’s COM port. If your PC’s COM port requires a 9-pin D-shell connector, the cable must use the following pin assignments. Modular 7924-A2-GB20-20 9-Pin D-Shell Pin August 1997 97-15268-02...

  • Page 48: Hdsl Loop Connection Cable Pin Assignments

    5 – 8 NOTE: Pin 1 is on the left when viewing the jack from its inserted position. 25-Pin D-Shell Pin Signal Loop A Tip Loop A Ring Loop B Tip Loop B Ring open August 1997 97-15442-01 7924-A2-GB20-20...

  • Page 49: T1 Network Connection Cable Pin Assignments

    The modular connector that plugs into the rear panel of DSX-1-compatible units has the following pin assignments. 6 – 8 NOTE: Pin 1 is on the left when viewing the jack from its inserted position. 7924-A2-GB20-20 Signal Tx Ring Tx Tip open...
  • Page 50 The jumper and switchpack detailed in configuration options. All other jumpers (listed below) should always be left as positioned at the factory. Jumper 7924-A2-GB20-20 to assist you in locating the switchpacks and jumpers on the Figure C-1 Pins (Factory-Setting) 2–3 No Jumper 2–3...
  • Page 51 8 to the second digit. For example, set 7 ON and 8 OFF for D4 framing. 1 2 3 1 2 3 1 2 3 1 2 3 3 2 1 HDSL Line Jack August 1997 VT100 Terminal Modular Jack Jumper P11 Pins* Settings* Terminal Mode Switchpack Mode 97-15379-02 7924-A2-GB20-20...
  • Page 52 The jumper and switchpacks detailed in configuration options. All other jumpers (listed below) should always be left as positioned at the factory. Jumper 7924-A2-GB20-20 to assist you in locating the switchpacks and jumpers on the Figure C-2 Pins (Factory-Setting) 1–2 1–2...
  • Page 53 ON = 256 kbps ON = 384 kbps ON = 512 kbps ON = 768 kbps ON = 1024 kbps All ON = 64 kbps All OFF = 1536 kbps Jumper P8 Pins* Settings* Terminal Mode Switchpack Mode 97-15524-01 7924-A2-GB20-20...
  • Page 54 Far End Bit Error. Number of errors reported by the remote equipment. 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. 7924-A2-GB20-20 August 1997 GL-1...
  • Page 55 A data signaling rate common in the United States. A term for a digital carrier facility used to transmit a DS1 formatted signal of 1.544 Mbps. Transmit Data. An EIA-lead standard for V.24 circuit CT 103; an input signal (DTE-to-DCE). V.35 ITU-T standard for a high-speed, 34-pin, DCE/DTE interface. GL-2 August 1997 7924-A2-GB20-20...
  • Page 56 A D4 framing, 4-3 data rate for V.35 compatible units, 5-3 DS0 assignments, A-4 DSX-1 to DSX–1 configuration, A-2 DSX-1 to V.35 configuration, A-3 7924-A2-GB20-20 extended superframe, 4-3 firmware revision, A-4 framing options, 4-3 hardware revision, A-4 installation, 2-1...
  • Page 57 B-1 terminal interface, 3-1 VT100 interface, 3-1 testing, 7-1 time slot assignments, A-4 unframed, 4-3 restrictions on use, A-4 user interface, 1-5, 3-1 V.35 to DSX-1 configuration, A-3 warranty telephone number, A worksheets, A-1 August 1997 7924-A2-GB20-20...

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