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ADC HiGain H2TU-C-202 User Manual

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ANUAL
HiGain H2TU-C-202 List 7G Line Unit
Product Catalog: H2TU-C-202-L7G
CLEI: VACKBBCA

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Summary of Contents for ADC HiGain H2TU-C-202

  • Page 1 ANUAL HiGain H2TU-C-202 List 7G Line Unit Product Catalog: H2TU-C-202-L7G CLEI: VACKBBCA...
  • Page 2 Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. 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 Inspecting Shipment LTPH-UM-1208-01 June 6, 2003 H2TU-C-202 List 7G...

  • Page 5: Table Of Contents

    LTPH-UM-1208-01 Table of Contents ABLE OF ONTENTS Overview ____________________________________________________________________________ 1 Features ..............................1 Applications ............................2 Front Panel __________________________________________________________________________ 3 Installation___________________________________________________________________________ 6 Provisioning__________________________________________________________________________ 8 Accessing the Provisioning Screens ....................8 Connecting to a Maintenance Terminal................8 Logon Screen ........................8 Provisioning Tasks ...........................11 Setting Date and Time .......................11 Setting Circuit ID Numbers ....................12 Configuring the System .....................13 Resetting to Factory Defaults ....................24...
  • Page 6 Table of Contents LTPH-UM-1208-01 Loopback Test Procedures ......................44 General Troubleshooting Tips ..................44 Setting the Loopback Time-Out Option................44 GNLB Test Procedures ..................... 45 A3LB Test Procedures ...................... 46 Loopback Testing Using a Maintenance Terminal ............47 Loopback Testing Using Remote Unit Front-Panel Pushbuttons ........47 Appendix A - Specifications ____________________________________________________________ 48 Power Consumption ........................
  • Page 7 6. Typical Inventory Screen ..........................12 7. Config Menu ..............................13 8. Config Menu - Standard Options (defaults shown) ..................14 9. Config Menu - ADC Options (defaults shown) ...................14 10. Config Menu - Set Factory Defaults ......................24 11. Config Menu - Master Clear ........................25 12.
  • Page 8 4. Navigational Keys for the Maintenance Terminal Screens................9 Logon Screen Menus..........................10 6. H2TU-C Standard Config Menu Options ....................15 7. H2TU-C ADC Config Menu Options ......................16 8. DS1 and DSX-1 24-Hour PM Threshold ....................18 9. Response to H2TU-R DS1 Frame Conversion Options................20 10.

  • Page 9: Overview

    LTPH-UM-1208-01 Overview VERVIEW The H2TU-C-202 List 7G (H2TU-C) line unit is the Central Office (CO) side of a T1 transmission system. The HiGain HDSL2 product family is fully compliant with the HDSL2 standard ANSI T1.418. The H2TU-C, when used with an H2TU-R remote unit, transmits a 1.552 Mbps payload on one unconditioned copper pair over the full Carrier Service Area (CSA) range.

  • Page 10: Applications

    Overview LTPH-UM-1208-01 – Bit Error Rate (BER) alarm – Remote provisioning – Power Back Off - Customer (PBOC) and Power Back Off - Network (PBON) for configuring power output levels – Loss of Signal/Alarm Indication Signal (LOS/AIS) payload alarm – Selectable loopback activation codes DS1 is used throughout this document to refer to either the remote unit’s DS1 interface or the line unit’s DSX-1 interface.

  • Page 11: Front Panel

    LTPH-UM-1208-01 Front Panel RONT ANEL Figure 1 shows the H2TU-C front panel. Table 1 on page 4 describes the front-panel components and Table 3 on page 7 describes LED status and functions. For pinout diagrams of the H2TU-C card-edge connector and craft port, refer to “Appendix A - Specifications”...
  • Page 12 Front Panel LTPH-UM-1208-01 Table 1. Front-Panel Description Front-Panel Feature Function List number Identifies the list number of the H2TU-C. Front-panel LEDs Display HDSL2 and DS1 line, provisioning, and alarm status through front-panel LEDs. Refer to Table 3 on page 7 for a listing of the front-panel LEDs and their functions.
  • Page 13 LTPH-UM-1208-01 Front Panel DIP S BOARD WITCH The H2TU-C circuit board has an 8-position DIP switch, S2 (see Figure 2 below). Options that are configurable through the DIP switch cannot be configured through the maintenance terminal screens. Configuration information for the switches is reported on the screens, but is “read only.” OFF is the default setting of all switches. Table 2 describes the functions of DIP switch S2.

  • Page 14: Installation

    Installation LTPH-UM-1208-01 NSTALLATION H2TU-C-202 CO Shelf H0005-A Figure 3. H2TU-C Installation When installing an H2TU-C in a chassis, be sure to wear an antistatic wrist strap. Avoid touching components on the circuit board. To comply with the intrabuilding wiring requirements of GR-1089 CORE, Section 4.5.9, the shields of the ABAM-type cables that connect the H2TU-C DSX-1 output ports to the cross-connect panel must be grounded at both ends.
  • Page 15 LTPH-UM-1208-01 Installation ERIFICATION Once the H2TU-C is installed, verify that it is operating properly. To do this, monitor the front-panel status LEDs. Table 3 below lists the LED status and their functions (the H2TU-C reports alarm types and loopback status on its front panel).

  • Page 16: Provisioning

    Certain options are configured only by a DIP switch on the H2TU-C (see “On-board DIP Switch S2” on page 5). Other options are configured using the maintenance terminal Config menus (see “Making Changes to Standard and ADC Options” on page 13). CCESSING THE ROVISIONING CREENS...
  • Page 17 LTPH-UM-1208-01 Provisioning Menu Bar Circuit ID Date and Time Logon Device System Status Figure 4. Logon Screen Table 4. Navigational Keys for the Maintenance Terminal Screens Function SPACEBAR Cycle through selections. ENTER Activate the current setting or choice, or display a menu. (VT100 only) Return to the parent menu.
  • Page 18 Identifies the 100 most recent system events and reports the date and time of occurrence. Config Provides standard configuration options, ADC options, date and time setting, and a reset option (factory settings). Also provides a master clear option that clears all performance, alarm, and event log entries.

  • Page 19: Provisioning Tasks

    LTPH-UM-1208-01 Provisioning ROVISIONING ASKS After the H2TU-C is successfully installed, perform these basic provisioning tasks: • Set date and time (see “Setting Date and Time” on this page). • Set circuit ID numbers (see “Setting Circuit ID Numbers” on page 12).

  • Page 20: Setting Circuit Id Numbers

    Provisioning LTPH-UM-1208-01 Setting Circuit ID Numbers The Inventory screen provides product information on all units in the system and allows setting of the circuit and unit identification numbers. To set the circuit ID numbers: Press to select the Inventory screen. Type the Circuit ID number in the field indicated (see Figure 5), then press...

  • Page 21: Configuring The System

    Standard and ADC configuration options. Standard options are those supported by HiGain HDSL2 units when connected to units from other vendors. ADC options are an extended set of options that are only available when using HiGain units exclusively.
  • Page 22 Provisioning LTPH-UM-1208-01 Figure 8. Config Menu - Standard Options (defaults shown) Figure 9. Config Menu - ADC Options (defaults shown) June 6, 2003 H2TU-C-202 List 7G...
  • Page 23 LTPH-UM-1208-01 Provisioning Table 6. H2TU-C Standard Config Menu Options Standard Config Menu Selection Description Options Loopback Timeout (LBTO) NONE Disables automatic time-out cancellation of all loopbacks. 20 min Sets automatic cancellation of all loopbacks to 20 minutes after initiation. 60 min Sets automatic cancellation of all loopbacks to 60 minutes after initiation.
  • Page 24 Options” on page ANSI T1/E1.4. (a) FRMG, DS1, and LBTO are read-only options on the maintenance terminal. Options can only be changed by the dip-switches on the board. Table 7. H2TU-C ADC Config Menu Options ADC Config Selection Description Menu Options Line Power Feed (PWRF) Disables powering to the HDSL2 pair.
  • Page 25 LTPH-UM-1208-01 Provisioning Table 7. H2TU-C ADC Config Menu Options (Continued) ADC Config Selection Description Menu Options Network AIS Pattern (NAIS) If ALMP is set to AIS, this option specifies which pattern is sent to the network when a remote LOS or AIS occurs. When configured for CI, an AIS-CI pattern is sent to the network.
  • Page 26 Provisioning LTPH-UM-1208-01 Power Back Off Customer (PBOC) and Power Back Off Network (PBON) Options. Power Back Off Customer (PBOC) and Power Back Off Network (PBON) allow the HDSL circuit to support two transmit power templates: default (DEF/higher level) and enhanced (ENH/lower level). These are defined in Section 6.1.4.2 of the ANSI T1E1.4 HDSL2 standard.
  • Page 27 LTPH-UM-1208-01 Provisioning HDSL2 BER Threshold (HBER) Option. The HBER option permits the monitoring of loop integrity and reporting of alarms when excessive errors are detected. The PM primitive used for this purpose is the CRC checksum performed on the HDSL2 frame for both directions of transmission. It is, therefore, called a block error rate rather than the bit error rate associated with the DS1 interface.
  • Page 28 Provisioning LTPH-UM-1208-01 ESF-RAI to SF-RAI Overwrite (ROVR) Option. If the ESF-RAI to SF-RAI Overwrite (ROVR) option is enabled, it allows a network ESF-RAI or ESF-RAI-CI pattern to be converted into a CPE SF-RAI or SF-RAI-CI pattern. If the ROVR option is disabled, it prevents conversion of a network ESF payload with an embedded RAI pattern. Disabling the ROVR option preserves the integrity of the CPE payload as it was originally transmitted.
  • Page 29 LTPH-UM-1208-01 Provisioning Table 10. Extended SuperFrame Format Frame Bits Framing Pattern Frame Bit for Datalink Cyclical Redundancy ESF Number Sequence (FPS) - 2 kb/s (FDL) - 4 kb/s Check (CRC) Bits - 2 kb/s Table 11. SuperFrame Format Frame Bits SF Number Terminal Framing Bit SuperFrame Signaling Bit...
  • Page 30 Provisioning LTPH-UM-1208-01 Fractional T1 Mode (FT1) Option. Fractional T1 circuits can be used in feeder networks to provide frame relay service. If such circuits are maintained by a DDS test group, then these circuits must respond to DDS/DS0 latching loopback commands, the only tool test groups have at their disposal. A latching loopback, once it has been initiated by the correct sequence, remains locked or “latched”...
  • Page 31 LTPH-UM-1208-01 Provisioning The Test Center transmits a group of 40 TIP bytes to loop down the loopback. It continues to transmit TIP bytes in multiples of 20 until the TIP bytes are not returned or until about 2 seconds have elapsed. If the bytes are absent, a successful loopdown is reported;...

  • Page 32: Resetting To Factory Defaults

    Provisioning LTPH-UM-1208-01 Resetting to Factory Defaults To reset the H2TU-C to its original factory defaults: Press to select the Config menu. Use the arrow keys to select Set Factory Defaults (see Figure 10), then press ENTER ↑ ↓ Press to reset the H2TU-C or press to cancel this action.

  • Page 33: Clearing The History, Alarm, And Event Log Screens

    LTPH-UM-1208-01 Provisioning Clearing the History, Alarm, and Event Log Screens Select Master Clear to clear the History, Alarm, and Event Log screens after the system has been installed and is functioning properly. This removes miscellaneous data acquired during the start-up session and ensures that you have meaningful data thereafter.

  • Page 34: Monitoring System Activity And Performance

    Monitoring System Activity and Performance LTPH-UM-1208-01 ONITORING YSTEM CTIVITY AND ERFORMANCE The HDSL2 system provides the following maintenance screens for monitoring system activity and assessing performance. • The Monitor screen provides a graphical representation of circuit activity and allows initiation of loopbacks. •...
  • Page 35 LTPH-UM-1208-01 Monitoring System Activity and Performance To initiate a loopdown of all active loopbacks, press the SPACEBAR to select LPDN, then press ENTER When prompted with the message: Are you sure (Y/N)?, press to initiate the loopdown or cancel. Table 15. Monitor Screen Descriptions Field Description Active Loopback...

  • Page 36: Using The Performance Screens To View Performance Data

    Monitoring System Activity and Performance LTPH-UM-1208-01 SING THE ERFORMANCE CREENS TO ERFORMANCE The Performance screens display: • CRC statistics for the HDSL2 or DS1 interface in 31-day, 48-hour, 25-hour, and current history reports. • Alarm statistics for the DS1 interfaces (Figure 22 on page 33 Figure 23 on page 33) or HDSL2 interfaces...
  • Page 37 LTPH-UM-1208-01 Monitoring System Activity and Performance Figure 14. H2TU-C DS1 48-Hour Performance History Figure 15. H2TU-R DS1 25-Hour Performance History Figure 16. H2TU-R DS1 Current Statistics H2TU-C-202 List 7G June 6, 2003...

  • Page 38: Performance History At The Hdsl2 Interface

    Monitoring System Activity and Performance LTPH-UM-1208-01 Figure 17. H2TU-C DS1 Current Statistics Table 16. Error Acronyms Used on the DS1 Performance History Screens Error Error Description Description Acronym Acronym CV-L Code Violation - Line SES-P Severely Errored Seconds - Path Seconds with SES, CRC (ESF) ≥...
  • Page 39 LTPH-UM-1208-01 Monitoring System Activity and Performance Figure 18. H2TU-C HDSL2 31-Day Performance History Figure 19. H2TU-C HDSL2 48-Hour Performance History Figure 20. H2TU-C HDSL2 25-Hour Performance History H2TU-C-202 List 7G June 6, 2003...

  • Page 40: Using The Performance Screens To View Alarm Data

    Monitoring System Activity and Performance LTPH-UM-1208-01 Figure 21. H2TU-C HDSL2 Current Statistics Table 17. Error Acronyms Used on the HDSL2 Performance History Screens Error Acronym Description Code Violation Total count of HDSL2 CRC errors. Errored Seconds Seconds with HDSL2 CRC ≥ 1 or LOSW ≥ 1 Severely Errored Seconds Seconds with HDSL2 CRC ≥...
  • Page 41 LTPH-UM-1208-01 Monitoring System Activity and Performance Figure 22. H2TU-C DS1 Alarm History Screen Figure 23. H2TU-R DS1 Alarm History Screen Table 18. DS1 Alarm Descriptions Message on Screen Description H2TU-C DS1 Alarms (see Figure 22 on this page) LLOS Line (Unit) Loss of Signal—Loss of the H2TU-C DSX-1 input signal. LAIS Line Alarm Indication Signal—Indicates an AIS (all ones) pattern is being transmitted from the local DS1 output port.

  • Page 42: Alarm History At The Hdsl2 Interface

    Monitoring System Activity and Performance LTPH-UM-1208-01 Table 18. DS1 Alarm Descriptions (Continued) Message on Screen Description TX RAI-CI Transmit RAI-CI - Remote Alarm Indication at the H2TU-R—Upon reception of an RAI (yellow) from the CPE, the H2TU-R sends an RAI-CI toward the network if the network signal received at the H2TU-R is clear. If the network signal is impaired (LOS, AIS, or LOF), then the RAI is passed on to the network unaltered.

  • Page 43: Using The System Event Log To Track Events

    LTPH-UM-1208-01 Monitoring System Activity and Performance Table 19. HDSL2 Alarm Descriptions Message on Screen Description HDSL2 Alarms at the H2TU-C and H2TU-R LOSW Loss of Sync Word—The HDSL2 loop has lost synchronization. Margin—The margin on the HDSL2 loop has dropped below the minimum threshold value set for the system.

  • Page 44: Event Log Messages

    Monitoring System Activity and Performance LTPH-UM-1208-01 Event Log Messages Table 20 lists all the possible messages that can be displayed by the System Event Log screen. Table 20. Event Log Entry Messages Any DS1 Alarm History reset Any DS1 PM register reset Any HDSL2 Alarm History reset Any HDSL2 PM register reset Any Loop Down (any segment)

  • Page 45: Origin Tags

    LTPH-UM-1208-01 Monitoring System Activity and Performance Origin Tags The origin tags identify the source of all Write entries and how an event occurred. The exact meaning is dependent on the type of event and the unit reporting the event. A Write entry changes a system parameter or an option setting, but it does not affect circuit status changes, such as alarms.

  • Page 46: Using The Report Menu

    Monitoring System Activity and Performance LTPH-UM-1208-01 SING THE EPORT The Report menu (Figure 26) provides screens containing status and performance monitoring data for line and remote units which can be downloaded to a file for analysis or future reference. Table 22 on page 39 describes the four types of reports provided by the Report menu.
  • Page 47 LTPH-UM-1208-01 Monitoring System Activity and Performance Table 22. Report Types Type Contains the following information: Full Report • Circuit and unit identifications • Product information • System configuration • Current performance statistics • Alarm history • Performance history • System event log Short Report •...

  • Page 48: Testing

    Testing LTPH-UM-1208-01 ESTING This section provides information about system alarms, LOS and AIS response, OCT55 test procedure, and loopback testing. YSTEM LARMS Table 23 provides a summary of the system alarms displayed on the H2TU-C alarm history screens (see “Using the Performance Screens to View Alarm Data”...

  • Page 49: Alarm Option For The Digital Loop Carrier Feed

    LOS to CPE NLBP Remove alarm AIS event? pattern [AIS] AIS to CPE [ENA] FT1 idle to NET & CPE [DIS] ADC Option [LOS] ALMP Pass on LOS to NET Standard Option Default configurations [AIS] are in bold. [AIS] NAIS...

  • Page 50: Oct55 Test Pattern With Ami Line Code

    Testing LTPH-UM-1208-01 OCT55 T AMI L ATTERN WITH The OCT55 test pattern can be used in unframed mode to stress the system and verify data integrity. In an SF or ESF framing mode, excessive zero anomalies may occur, which causes the H2TU-C to report ES, SES, and UAS errors according to ANSI T1.231-1997.

  • Page 51: Special Loopback (Splb) Mode

    (SPLB) M PECIAL OOPBACK The HDSL2 system can be configured from the ADC Options menu for one of two SPLB modes, GNLB or A3LB. These modes permit the HDSL2 system to respond to the loopback commands described in the following paragraphs.

  • Page 52: Loopback Test Procedures

    Testing LTPH-UM-1208-01 OOPBACK ROCEDURES The following sections provide step-by-step test procedures for verifying the integrity of the HDSL2 channels at every module location as well as the DS1 channels to the customer and the local DSX-1 interface. General Troubleshooting Tips If trouble is encountered on the DSX-1 interfaces of the H2TU-C, verify that the: •...

  • Page 53: Gnlb Test Procedures

    LTPH-UM-1208-01 Testing GNLB Test Procedures Figure 29 on page 46 is a graphical representation of the various loopback configurations with the associated GNLB commands shown. Table 24 summarizes the codes required to execute GNLB loopback commands. All code sequences must be present for at least 5 seconds. To perform the GNLB loopback test procedure: Have the CO tester send the NREM (3-in-7) inband loopup code for 5 seconds.

  • Page 54: A3Lb Test Procedures

    Testing LTPH-UM-1208-01 Loopbacks Toward Network TLOS* HRU-412 HRU-412 H2TU-C HDSL2 SPAN LOGIC HRU-412 All ones H2TU-R SMJK* HRU-412 HRU-412 HDSL2 SPAN H2TU-C 2-in-5 All ones 11000 HRU-412 H2TU-R SMJK* HRU-412 HRU-412 H2TU-C HDSL2 SPAN 1-in-6 All ones HRU-412 100000 H2TU-R FF02 NREM NREM*...

  • Page 55: Loopback Testing Using A Maintenance Terminal

    LTPH-UM-1208-01 Testing Table 25. Addressable Repeater Loopback Commands (A3LB) Name Binary Code (Hexadecimal Equivalent) Description NLOC 1111-1111-0001-1110 (FF1E) H2TU-C loopup from NI CREM 0011-1111-0001-1110 (3F1E) H2TU-C loopup from CI NREM 1111-1111-0000-0010 (FF02) H2TU-R loopup from NI CLOC 0011-1111-0000-0010 (3F02) H2TU-R loopup from CI SMJK 11000-11000-11000 ...

  • Page 56: Appendix A - Specifications

    Appendix A - Specifications LTPH-UM-1208-01 A - S PPENDIX PECIFICATIONS Power HDSL2 Span Voltage 0 or -180 ±5 Vdc CO Supply -48 Vdc nominal (-42.5 Vdc to -56.5 Vdc) “Power Consumption” “Maximum Power Dissipation” “Maximum Current Drain” on page Electrical Protection Secondary surge and power cross protection on HDSL2 ports.

  • Page 57: Power Consumption

    LTPH-UM-1208-01 Appendix A - Specifications OWER ONSUMPTION The three most important power parameters of an H2TU-C are its maximum power consumption, maximum power dissipation, and maximum current drain. Table 26 describes line-powered and locally powered circuits on 9 kft, 26 AWG loops. Table 26.

  • Page 58: Insertion Loss And Loop Attenuation

    Appendix A - Specifications LTPH-UM-1208-01 NSERTION OSS AND TTENUATION Each loop has no more than 35 dB of insertion loss at 196 kHz, with driving and terminating impedances of 135Ω, as shown in Table 27 below. This is equivalent to no more than 28 dB loop attenuation. Table 27.

  • Page 59: H2Tu-C Card-Edge Connector

    LTPH-UM-1208-01 Appendix A - Specifications H2TU-C C ONNECTOR Figure 30 shows the pin assignments of the card-edge connector on the H2TU-C card. Active pins are shown in black. Ring 1 Factory use only DSX-1 OUT Tip 1 ( - ) Chassis ground* -48Vdc Local power Alarm...

  • Page 60: Craft Port

    Appendix A - Specifications LTPH-UM-1208-01 Pins 22 and 30 must never be taken above +5 Vdc or below -60 Vdc. RAFT Figure 31 shows the pinout for the craft port connector and its connection to a DB-9 or DB-25 connector on a maintenance terminal.

  • Page 61: Appendix B - Functional Operation

    UNCTIONAL PERATION ADC HDSL2 technology provides full-duplex services at standard DS1 rates over copper wires between an H2TU-C and an H2TU-R, which comprise one HDSL2 system. ADC systems use ADC Overlapped Pulse Amplitude Modulation Transmission with Interlocking Spectra (OPTIS) transceiver systems to establish a full-duplex, 1.552 kbps data channel between an H2TU-C and a remotely located H2TU-R.

  • Page 62: Appendixc - Compatibility

    The HiGain system uses HDSL2 transmission technology as recommended by ANSI committee in compliance with the ANSI T1.418-2000 HDSL2 standards. HiGain HDSL2 complies with GR-63-CORE, TR-TSY-000499, and GR-1089-CORE. The H2TU-C is compatible with any 200 mechanics shelf, including the following ADC HiGain shelves: • HRE-425 (12-slot) •...

  • Page 63: Appendixd - Product Support

    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. • Quotation Proposals Sales Assistance •...

  • Page 64: Appendix E - Abbreviations

    Appendix E - Abbreviations LTPH-UM-1208-01 E - A PPENDIX BBREVIATIONS Frame Bit for Datalink Far End ACON: Auto Conversion of DS1 frame FT1: Fractional T1 AIS: Alarm Indication Signal AIS-CI: Alarm Indication Signal-Customer Installation AOR: Addressable Office Repeater GFD: Ground Fault Detection AUTO: Auto-Framing Mode GNLB:...
  • Page 65 LTPH-UM-1208-01 Appendix E - Abbreviations PBOC: Power Back Off - Customer PBON: Power Back Off - Network PDVS: Pulse Density Violation Seconds Payload Loopback Command PRM: Performance Report Messaging PRM-FE: Performance Report Messaging - Far End PRM-NE: Performance Report Messaging - Near End SES: Severely Errored Seconds SES-L:...
  • Page 66 Appendix E - Abbreviations LTPH-UM-1208-01 June 6, 2003 H2TU-C-202 List 7G...

  • Page 67: Certification And Warranty

    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 Electrical Code.
  • Page 68 World Headquarters: ADC Telecommunications, Inc. PO Box 1101 Minneapolis, MN 55440-1101 Technical Assistance Tel: 800.366.3891 x73223 Tel: 952.917.3223 Fax: 952.917.3244 : LTPH-UM-1208-01 OCUMENT ´,`9¶7+¨ 1264257...

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