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ADC HiGain HRU-402 User Manual

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HiGain
HiGain
HRU-402
HiGain REM UNIT
ALM
LP1
H
D
S
LP2
L
ESF
SF
B8ZS
AMI
LBK
D
S
1
RCV
LEV
0
DIS
TLOS
LB
XMT
BRG
RCV
RS-232
DCE
L
-15
EN
U
HRU-402 List 1 Remote Unit
Product Catalog: 150-1592-01
CLEI: T1L2CW0A
HRU-402 List 3 Remote Unit
Product Catalog: 150-1592-03
CLEI: T1L3KLJD
M
SER
ANUAL

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Summary of Contents for ADC HiGain HRU-402

  • Page 1 HiGain HiGain ANUAL HRU-402 HiGain REM UNIT B8ZS HRU-402 List 1 Remote Unit Product Catalog: 150-1592-01 CLEI: T1L2CW0A HRU-402 List 3 Remote Unit Product Catalog: 150-1592-03 TLOS CLEI: T1L3KLJD RS-232...
  • Page 2 In no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits, and ADC further disclaims any and all liability for indirect, incidental, special, consequential or other similar damages.
  • Page 3 Unpack each container and inspect the contents for signs of damage. If the equipment has been damaged in transit, immediately report the extent of damage to the transportation company and to ADC DSL Systems, Inc. Order replacement equipment, if necessary.
  • Page 4 Unpack and Inspect Your Shipment 150-402-100-03 November 5, 1998 HRU-402 List 1 and List 3...

  • Page 5: Table Of Contents

    150-402-100-03 Table of Contents ABLE OF ONTENTS Product Overview________________________________________ 1 Features ..................2 Applications ................3 Product Description ..............5 Front Panel..............5 Panel Circuit Board Option ........7 Functional Description............. 9 Operational Capabilities ..........9 Local and Line Powering......... 11 Simplex Sealing Current Information .....
  • Page 6 Table of Contents 150-402-100-03 Remote Terminal Main Menu ..........29 View Span Status .............31 System Settings ............34 Loopback Menu ............36 View Performance Data ...........40 View Performance History ........42 View Alarm History..........44 View System Inventory..........46 Appendix A: Specifications ________________________________48 Card-edge Pinout Connector ..........50 Additional Features ..............51 Bipolar Violation Transparency (BPVT) and Bit Error Rate (BER) Options........51...
  • Page 7 150-402-100-03 List of Figures IST OF IGURES 1. Typical HiGain System ................. 1 2. Front Panel .................... 5 3. User Option Locations................8 4. HRU-402 Block Diagram ..............10 5. HiGain System Generic Loopbacks (GNLB)........13 6. Installing the HRU-402 in a Remote Enclosure........17 7.
  • Page 8 List of Tables 150-402-100-03 IST OF ABLES 1. HDSL Loss Over Cables................3 2. Front Panel Component .................6 3. Panel Switch Option ................9 4. HLU-231 List 8 Four-Character Front Panel Messages ......19 5. Maintenance Terminal Navigational Keys ..........28 6. Remote Terminal Menu Descriptions..........30 7.

  • Page 9: Product Overview

    150-402-100-03 Product Overview RODUCT VERVIEW ® This user manual describes the HiGain Remote Units, Models HRU-402 List 1 and List 3. These remote units function as the remote ends of a repeaterless T1 transmission system. An HRU-402 connects to a HiGain Line Unit (HLU) and HiGain Doubler Units (HDUs), creating a HiGain system that provides 1.544 Mbps transmission on two unconditioned copper pairs over the full Carrier Service Area (CSA) range.

  • Page 10: Features

    784 kbps full-duplex 2 Binary 1 Quaternary (2B1Q) HDSL transmission on each of two pairs • Digital Signal Level 0 (DS0) blocking • Compatible with ADC 1 x 1 protection switching system using the HRE-422 List 5 remote enclosure. • Narrow 200-type mechanics (half-width 400 mechanics) •...

  • Page 11: Applications

    150-402-100-03 Product Overview • Improved DS-1 auto mode • Bipolar Violation Transparency (BPVT) and Bit Error Rate (BER) options • Remote DS-1 Alarm (RDA) option • Alarm Pattern (ALMP) option • DS-1 Line Code auto options PPLICATIONS HRU-402 List 1 and List 3 provide a cost-effective and easy-to-deploy method for delivering T1 service over a single metallic pair.
  • Page 12 Product Overview 150-402-100-03 HRU-402 List 1 and List 3: • operate with any number of T1, Plain Old Telephone Service (POTS), or other HiGain systems sharing the same cable binder group. • can be used with customers requiring T1 service on a temporary or permanent basis.

  • Page 13: Product Description

    150-402-100-03 Product Overview RODUCT ESCRIPTION This section provides a brief description of the major components that comprise HRU-402 List 1 and List 3. Front Panel Figure 2 Table 2 identify the HRU-402 List 1 and List 3 front panel components. Table 2 also describes the functions of the front panel components.
  • Page 14 Product Overview 150-402-100-03 Table 2. Front Panel Component Name Function Alarm (ALM) LED Shows alarm states for remote and local Loss of Signal (LOS). Solid red indicates a LOS condition at HRU T1 input. Blinking red indicates a LOS condition at HLU T1 input. HDSL LEDs Displays HDSL Loop 1 (LP1) and Loop 2 (LP2) conditions.

  • Page 15: Panel Circuit Board Option

    150-402-100-03 Product Overview Table 2. Front Panel Component (Continued) Name Function Loopback (LPBK) Press the button for five seconds to activate a remote loopback Control button towards the Network Remote Loopback (NREM) state. The unit can be unlooped by either pressing the LPBK control button in again for five seconds or by the standard loopdown coded messages.
  • Page 16 Product Overview 150-402-100-03 Panel Circuit Board Option HRU-402 List 1 and List 3 has user options that must be set before you install the unit into a shelf or an enclosure. Two of these options, DS-1 RCV LVL and TLOS, are located on the front panel. A third option, Sealing Current (SCURR), is located at the back of the panel circuit board adjacent to the card-edge connector as shown in Figure...

  • Page 17: Functional Description

    This section describes the functions of the HRU-402. Operational Capabilities HiGain utilizes ADC’s 2B1Q HDSL transceiver system to establish two full-duplex 784 kbps data channels between the HLU and a remotely mounted HRU-402. This system provides a total capacity of 1.568 Mbps between the two units.
  • Page 18 Product Overview 150-402-100-03 The HRU-402 List 1 power supply converts the 90 to 200 Vdc power that is received on the simplex pairs (or the -48V input when locally powered) to voltage and currents required by the remote unit circuitry. The HRU-402 List 3 power supply converts the -20 to -70 Vdc local power to voltages and currents required by the remote unit circuitry.

  • Page 19: Local And Line Powering

    150-402-100-03 Product Overview Local and Line Powering The HRU-402 List 1 can be line or locally powered. The remote unit always chooses the local -48 Vdc from the power supply attached to pair 35 (-) and 17 (+) of the card-edge connector. To set local or line power for the HRU-402 List 1, switch the Local Power (LPWR) switch S1 to ENA (see Figure 3 on page 8...

  • Page 20: Simplex Sealing Current Information

    Product Overview 150-402-100-03 The HRU-402 List 3 must be locally powered with a -20V to -70V local power supply with 250mA output current capacity (5.0 W). A Teltrend© WPS-2005 Wall-Mount Power Supply (-48V and 250 mA) is capable of powering two HRU-402 units. The 2005 provides spade lugs to access its -48V output.
  • Page 21 150-402-100-03 Product Overview The HRU-402 supports four types of loopbacks (see Figure Loopbacks Toward Network TLOS HRU-412 HRU-412 HDSL SPAN LOGIC HRU-412 All 1s SMJK* HRU-412 HRU-412 HDSL SPAN All 1s 2 in 5 11000 HRU-412 NREM NREM* HRU-412 HRU-412 HRU-412 HRU-412 HDSL SPAN...

  • Page 22: Smartjack Set To Ena

    Product Overview 150-402-100-03 The SmartJack Loopback has two modes of operation as determined by the SmartJack Alarm Indication Signal (SAIS) user option settings at the HLU (ENA or DIS). The ENA option causes the HRU to transmit the Alarm Indication Signal (AIS) towards the CPE. The DIS option turns off the AIS/CPE signal.

  • Page 23: Sais Set To Dis

    150-402-100-03 Product Overview When the HRU is in its AIS/ENA SmartJack Loopback state, its T1 input LOS, Code and Frame monitoring circuits are connected to the unframed all ones pattern which is being looped back to these circuits through the T1 Interface chip.

  • Page 24: Installation

    HIPMENT When you receive the equipment, inspect it for signs of damage. If damage has occurred, immediately report the extent of damage to the transportation company and to ADC DSL Systems, Inc. Your shipment should consist of: • One HRU-402 •...
  • Page 25 150-402-100-03 Installation For outdoor applications, the HRU-402 mounts in the following shelves: • HRE-450 (single-unit) • HRE-454 (four-unit) To install the HRU-402 (Figure Set the user options. (See Figure 3 on page Slide the remote unit into the card guides for the desired slot, then push the unit into the enclosure until it is seated in the card-edge connector.

  • Page 26: Testing

    Installation 150-402-100-03 Push the unit into the card-edge connector until it is entirely within the card guide. The unit should snap into place, indicating that the unit is properly seated. ESTING Testing the HiGain system allows you to verify the integrity of the HDSL channels to the HLU as well as the DS-1 channels to the customer and the HLU DSX-1 interface.

  • Page 27: Front Panel Messages

    150-402-100-03 Installation Repeat Step 3. If the test passes, the problem is in the cable pair or the HRU-402. If it fails, the problem is at the CO. If the sealing current option is enabled, insert a milliampmeter in series with the Tip or Ring of either HDSL pair and verify that approximately 10 mA of sealing current is flowing in either conduction (approximately 20 mA total).
  • Page 28 Installation 150-402-100-03 Table 4. HLU-231 List 8 Four-Character Front Panel Messages (Continued) Message Name Description FERR Framing Bit Error Framing bit error occurred at HLU T1 input. Occurred LBPV Local Bipolar A bipolar violation received at the T1 input to the Violation HLU-231.
  • Page 29 150-402-100-03 Installation Table 4. HLU-231 List 8 Four-Character Front Panel Messages (Continued) Message Name Description H1ES HDSL CRC Error HLU HDSL Loop 1 CRC error. Channel 1 H2ES HDSL CRC Error HLU HDSL Loop 2 CRC error. Channel 2 HiGain System Armed to respond to Intelligent Repeater Loop Codes.
  • Page 30 Installation 150-402-100-03 Table 4. HLU-231 List 8 Four-Character Front Panel Messages (Continued) Message Name Description LLOS Local Loss of Indicates that no signal is detected at the T1 input to the Signal HLU. Causes minor alarm. RLOS Remote Loss of No signal is detected at the T1 input to the HRU.

  • Page 31: Connecting To A Terminal Emulator

    150-402-100-03 Installation ONNECTING TO A ERMINAL MULATOR This section covers the remote terminal screens for both non-doubler and doubler applications. The 9-pin craft port (RS-232 dB-9 connector) on the HRU-402 front panel allows you to use a RS-232 cable to connect your system to an ASCII terminal or a PC running a terminal emulation program.
  • Page 32 Installation 150-402-100-03 Once the serial cable is connected to the Craft port (RS-232 dB-9 connector) on the HRU-402, connect the other end of the cable to the 9-pin COM port (RS-232) of the maintenance terminal (Figure 8). The maintenance terminal is configured as Data Terminal Equipment (DTE). Remote enclosure Maintenance terminal...

  • Page 33: Using The Maintenance Terminal

    150-402-100-03 Using the Maintenance Terminal If you are using the Microsoft Windows terminal emulation program, from the Settings, Terminal Preference menu, you must deselect “Show Scroll Bars and Use Function, Arrow, and Ctrl Keys for Windows.” SING THE AINTENANCE ERMINAL This section describes the use of the maintenance terminal software for viewing system performance.

  • Page 34: Remote Login Screen

    Using the Maintenance Terminal 150-402-100-03 To log on and access the menus and screens using the maintenance terminal: Press the SPACEBAR several times to activate the autobaud feature and to display the login screen. Once the remote unit and HLU have established synchronization, the Remote Login screen is displayed as shown in Figure +++++++++++++++++++++++++++++++++++++++++++++++++++++++...

  • Page 35: Higain Hlu-231 Remote Terminal Main Menu

    150-402-100-03 Using the Maintenance Terminal HI-GAIN HLU-231 REMOTE TERMINAL MAIN MENU (ver V6.2L-8E) CIRCUIT ID#: A. VIEW SPAN STATUS C. SYSTEM SETTINGS D. LOOPBACK MODE: NONE E. VIEW PERFORMANCE DATA F. VIEW PERFORMANCE HISTORY G. VIEW ALARM HISTORY H. VIEW SYSTEM INVENTORY I.

  • Page 36: Navigating The Hru Maintenance Menus

    Using the Maintenance Terminal 150-402-100-03 HRU M AVIGATING THE AINTENANCE ENUS System Spans There are five to seven screens available for viewing system performance, status, and history, depending on the number of spans in a particular application. Figure 11 is a graphical representation of system spans. The HRU Maintenance Terminal menus allows the user to monitor multi-span applications from the HLU to the HRU.

  • Page 37: Remote Terminal Main Menu

    150-402-100-03 Using the Maintenance Terminal EMOTE ERMINAL Figure 12 displays the Remote Terminal Main Menu once more and Table 6 describes the function of each menu selection. HI-GAIN HLU-231 REMOTE TERMINAL MAIN MENU (ver V6.2L-8E) CIRCUIT ID#: A. VIEW SPAN STATUS C.
  • Page 38 Using the Maintenance Terminal 150-402-100-03 Table 6. Remote Terminal Menu Descriptions Menu Function View Span Provides access to a submenu that allows you “View Span Status” on Status to monitor the HDSL line between the HLU and page the HRU-402 span (non-doubler applications), and the HLU, HDU and HRU-402 for multi-span applications.

  • Page 39: View Span Status

    150-402-100-03 Using the Maintenance Terminal View Span Status The View Span Status screen allows you to view the system status from the HLU to the HRU. The screen shows information about: • Time and date • Alarms • Loopbacks • Power level •...
  • Page 40 Using the Maintenance Terminal 150-402-100-03 At the View Span Status screen you have the following options: • Press to exit and return to the previous menu. • Press to update the current values. When doublers are in use, Figure 14 displays: TIME: 00:14:11 SPAN 5 STATUS...
  • Page 41 150-402-100-03 Using the Maintenance Terminal Table 7. Span Status Fields and Descriptions Field Description Time Time of day when Span Status was checked. Date Date when Span Status was checked. Alarms Presence or absence of alarm conditions. See Table Loopback Indicates Off condition or identifies specific active loopback.

  • Page 42: System Settings

    Using the Maintenance Terminal 150-402-100-03 System Settings The System Settings screen allows you to analyze and view configurable parameters. Provisioning from the remote is allowed when connected to particular HiGain line units. See the HiGain Line Unit user manual to determine whether remote provisioning is allowed. Type from the Remote Terminal Main menu to view the System Settings screen...
  • Page 43 150-402-100-03 Using the Maintenance Terminal View the HRU-402 system settings. Type to exit and return to the previous screen. Table 8 on page 35 lists the System Settings fields and descriptions. Table 8. System Settings Fields and Descriptions Field Description Time Time of day when System Settings were checked.

  • Page 44: Loopback Menu

    Using the Maintenance Terminal 150-402-100-03 Table 8. System Settings Fields and Descriptions (Continued) Field Description AIS on HDSL Indicates the settings for Alarm Indication Signal (AIS) on HDSL LOSW LOSW on the HDSL loops. AIS on Indicates settings of either ENA or DIS for alarm indication signals for the SMJK/NREM SmartJack Network Remote Loopback (NREM).

  • Page 45: Loopback Menu Without Doublers

    150-402-100-03 Using the Maintenance Terminal From the Remote Terminal Main Menu, type to display the Loopback Menu. When no doublers are in use, Figure 16 displays: LOOPBACK MENU TIME: 00:15:34 DATE: 02/02/98 CIRCUIT ID#: A. DISABLE LOOPBACKS B. NETWORK LOOP HLU (NLOC) C.

  • Page 46: Loopback Menu With Four Doublers

    Using the Maintenance Terminal 150-402-100-03 When doublers are in use, the following Loopback menu displays: LOOPBACK MENU TIME: 00:03:33 DATE: 02/02/98 CIRCUIT ID#: A. DISABLE LOOPBACKS B. NETWORK LOOP HLU(NLOC) M. NETWORK LOOP DOUBLER 4 (NDU4) C. NETWORK LOOP HRU (NREM)N. CUSTOMER LOOP DOUBLER 4 (CDU4) D.
  • Page 47 150-402-100-03 Using the Maintenance Terminal Table 9. Loopback Field Messages and Descriptions Messages Full Name Description NREM Network Remote Loopback at HRU (remote) towards network. Loopback NLOC Network Local Loopback Loopback at HLU (local) towards network. CLOC Customer Local Loopback at HRU (local) towards CI. Loopback CREM Customer Remote...

  • Page 48: View Performance Data

    Using the Maintenance Terminal 150-402-100-03 View Performance Data The View Performance Data screen shows the number of Error Seconds (ES) and Unavailable Seconds (UAS) occurrences in 15-minute increments for a 24-hour period for the HLU and the HRU-402. This screen displays ES/UAS for the DS-1 signal, HDSL Loop 1 and HDSL Loop 2 (non-doubler applications).

  • Page 49: Span 5 Performance Data Screen

    150-402-100-03 Using the Maintenance Terminal When doublers are in use, the following Performance Data screen displays: Date: 10/04/98 SPAN 5 PERFORMANCE DATA CIRCUIT ID#: ERRORED SECONDS/UNAVAILABLE SECONDS DS-1 HDSL-1 HDSL-2 HDU1 HDU2 HDU1 HDU2 00:00 000/000 000/000 000/000 000/000 000/000 000/000 00:15 000/000...

  • Page 50: View Performance History

    Using the Maintenance Terminal 150-402-100-03 View Performance History The View Performance History screen shows the number of ES/UAS occurrences in 24-hour increments for a 7-day period for the HLU and the HRU-402. This screen displays ES/UAS for the DS-1 signal, HDSL Loop 1 and HDSL Loop 2 (for non-doubler applications).

  • Page 51: Span 5 Performance History Screen

    150-402-100-03 Using the Maintenance Terminal When doublers are in use, the following Performance History screen is displayed: Time: 00:16:55 7 DAY HISTORY CIRCUIT ID#: SPAN 5 ERRORED SECONDS/UNAVAILABLE SECONDS DS-1 HDSL-1 HDSL-2 HLUHRUHLU HDU1HLU HDU1 01/26 00000/00000 00000/00000 00000/00000 00000/00000 00000/00000 00000/00000 01/27 00000/00000 00000/00000 00000/00000 00000/00000 00000/00000 00000/00000 01/28...

  • Page 52: View Alarm History

    Using the Maintenance Terminal 150-402-100-03 View Alarm History The View Alarm History screen allows you to view both active and retired alarms. To view the Alarm History screens: From the Remote Terminal Main Menu, type to display the Alarm History screen for non-doubler applications.
  • Page 53 150-402-100-03 Using the Maintenance Terminal Table 10 lists the Alarm History fields and descriptions. These descriptions apply to the Alarm History for doubler applications as well. Table 10. Alarm History Fields and Descriptions Field Description Type Identifies the type of alarm LOS, DS-1-HLU First and last instance of LOS at the HLU (current condition, number of alarms)

  • Page 54: View System Inventory

    Using the Maintenance Terminal 150-402-100-03 For doubler applications, the following screen displays: ALARM HISTORY TIME: 03:48:09 DATE: 10/04/98 CIRCUIT ID#: Type First Last Current Count LOS, DS1-HLU 10/04/98-00:36 10/04/98-00:36 LOS, DS1-HRU 10/04/98-00:00 10/04/98-00:00 SPAN1 LOSW, HDSL1 10/04/98-00:00 10/04/98-00:00 SPAN1 LOSW, HDSL2 10/04/98-00:00 10/04/98-00:00 SPAN1 MARGIN L1 SPAN1 MARGIN L2...

  • Page 55: View System Inventory Screen

    150-402-100-03 Using the Maintenance Terminal The circuit IDs can only be set at the HLU. They are limited to 24 alphanumeric characters and, like the system settings, are stored in Non-Volatile Random Access Memory (NVRAM), meaning the data remains even when power is lost or turned off. Setting circuit IDs is allowed when connected to particular HiGain line units.

  • Page 56: Appendix A: Specifications

    Appendix A: Specifications 150-402-100-03 A: S PPENDIX PECIFICATIONS Physical Material Steel Finish Zinc-plated Mounting Any standard 400 or 200 type mechanics Dimensions Height 5.6 in. (14.22 cm) Width 0.7 in. (1.7 cm) Depth 5.6 in. (14.22 cm) Weight 1 lb., 2 oz. (.51 kg) Power Line power 3.1 W (when connected to the following line units:...
  • Page 57 150-402-100-03 Appendix A: Specifications Environment Operating -40° to 149°F (-40° to + 65°C) temperature Operating humidity 5 to 95% non-condensing HDSL Line code 784 kbps 2B1Q full duplex +13 dB ± 0.5 dB @ 135 Ω Output 135 Ω Line impedance 14 Ω...

  • Page 58: Card-Edge Pinout Connector

    Appendix A: Specifications 150-402-100-03 EDGE INOUT ONNECTOR The HRU-402 occupies one slot in a remote enclosure. The card-edge pinout connector for the remote unit is shown in Figure DS-1TIP DS-1 RING HDSL2 RING1 HDSL2TIP 1 Protection Switch Control Factory Use Only Factory Use Only ( - ) -48V Local Power (HRU-402 List 1)

  • Page 59: Additional Features

    150-402-100-03 Appendix A: Specifications DDITIONAL EATURES The following describes additional information on some of the features included with the HRU-402. Bipolar Violation Transparency (BPVT) and Bit Error Rate (BER) Options The HRU-402 and its associated line units improve compatibility with Data Link Control (DLC) feeder applications due to T1 BPVT transmit capability between T1 interfaces.

  • Page 60: Remote Ds-1 Alarm (Rda) Option

    Appendix A: Specifications 150-402-100-03 The BER option also uses this (BPVT/CRC) TEC to generate an alarm if enabled. The HLU combines the one second TEC counts in both directions for the last 60 seconds. The line unit uses this one minute Total System Error Count (TSEC) to generate an alarm if it exceeds the selected BER threshold of (1E-6 or 1E-7) as follows: •...

  • Page 61: Ds-1 Line Code Auto Option

    150-402-100-03 Appendix A: Specifications When the HRU-402 is connected to older HLUs that do not support these options, the options are not displayed and are forced to the following default states: • BPVT: DIS • RDA: ENA • BER: None •...

  • Page 62: Appendix B: Abbreviations

    Appendix B: Abbreviations 150-402-100-03 B: A PPENDIX BBREVIATIONS 2 Binary 1 Quaternary 2B1Q Alarm Indication Signal Alarm Alarm Pattern ALMP Alternate Mark Inversion American Wire Gauge Bipolar with 8-zero Substitution B8ZS Bridged Bit Error Rate Bit Error Rate Threshold BERT Bipolar Violation Bipolar Violation Transparency BPVT...
  • Page 63 150-402-100-03 Appendix B: Abbreviations Digital Signal Level 0 Digital Service Level 1 DS-1 Digital System Cross-Connect Frame DSX-1 Data Terminal Equipment Enable Errored Seconds Extended Super Frame Extended Super Frame-Data Link ESF-DL High-bit-rate Digital Subscriber Line HDSL HiGain Doubler Unit HiGain Line Unit HiGain Remote Enclosure HiGain Remote Unit...
  • Page 64 Appendix B: Abbreviations 150-402-100-03 Plain Old Telephone Service POTS Receive Remote DS-1 Alarm Receive Level RLEV Remote Loss of Signal RLOS SmartJack AIS SAIS Sealing Current SCURR Super Frame Special Loopback SPLB Total Error Count Total System Error Count TSEC Transport System Generic Requirements TSGR Unavailable Seconds...

  • Page 65: Appendix C: Product Support

    C: P PPENDIX RODUCT UPPORT ADC Customer Service Group provides expert pre-sales and post-sales support and training for all its products. Technical support is available 24 hours a day, 7 days a week by contacting the ADC Technical Assistance Center.
  • Page 66 Appendix C: Product Support 150-402-100-03 November 5, 1998 HRU-402 List 1 and List 3...

  • Page 67: Certification And Warranty

    ADC during the 90-day warranty period is, at ADC’s option, either (a) return of the price paid or (b) repair or replace of the software. ADC also warrants that, for a period of thirty (30) days from the date of purchase, the media on which software is stored will be free from material defects under normal use.
  • Page 68 CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. ODIFICATIONS Any changes or modifications made to this device that are not expressly approved by ADC DSL Systems, Inc. voids the user's warranty. All wiring external to the products should follow the provisions of the current edition of the National...
  • Page 70 ADC DSL Systems, Inc. 14402 Franklin Avenue Tustin, CA 92780-7013 Tel: 714.832.9922 Fax: 714.832.9924 Technical Assistance Tel: 800.638.0031 Tel: 952.917.3222 Fax: 714.730.2400 ISO 9001/TL 9000 DNV Certification, Inc. REGISTERED FIRM : 150-402-100-03 OCUMENT ´,A+¶3}¨ 1233113...

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