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ADC HiGain HRU-402 Manual

Remote unit
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HiGain
HiGain
HRU-402
HiGain REM UNIT
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D
S
L
D
S
1
R
C
V
L
E
-7.5
V
XMT
BRG
RCV
L
1A
ALM
LP1
LP2
ESF
SF
B8ZS
AMI
LBK
-7.5/
0
-15
-15
RS-232
DCE
U
HRU-402 List 1A Remote Unit
Product Catalog: 150-1592-11
CLEI: T1L3KLPD
M
SER
ANUAL

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  • Page 1 HiGain HiGain ANUAL HRU-402 HiGain REM UNIT B8ZS HRU-402 List 1A Remote Unit Product Catalog: 150-1592-11 CLEI: T1L3KLPD -7.5/ -7.5 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 150-402-111-02 December 8, 1998 HRU-402 List 1A...

  • Page 5: Table Of Contents

    150-402-111-02 Table of Contents ABLE OF ONTENTS Overview _______________________________________________ 1 Features ..................2 BPVT and BER Features ............3 Applications ................4 Compatibility ___________________________________________ 5 Product Description ______________________________________ 7 Status LEDs ................9 Panel Circuit Board Options ..........11 HLU Front Panel Display Messages........12 Card-edge Pinout Connector..........
  • Page 6 Table of Contents 150-402-111-02 Additional Information on Selected Options......36 Remote DS-1 Alarm (RDA) Option ......36 Alarm Pattern (ALMP) Option ........37 DS-1 Line Code “Auto” Option.......37 Loopback Mode..............38 Loopback Operation..........42 SmartJack Set to ENA ..........44 SAIS Set to DIS ............44 Loopback Test Procedures ........45 View Performance Data ............46 View Performance History .............49 View Alarm History ...............51...
  • Page 7 150-402-111-02 List of Figures IST OF IGURES 1. Typical HiGain System ................1 2. Front Panel .................... 7 3. TLOS Switch Location................ 11 4. Card-edge Pinouts ................15 5. HRU-402 Block Diagram..............17 6. Installing the HRU-402 in a Remote Enclosure........19 7.
  • Page 8 List of Tables 150-402-111-02 IST OF ABLES 1. HDSL Loss Over Cables................5 2. Front-panel Features ................8 3. Status LED Descriptions................9 4. Rear Unit TLOS Switch...............11 5. HLU Front Panel Display Messages............12 6. Maintenance Terminal Navigational Keys ..........27 7. Remote Terminal Menu Descriptions..........29 8.

  • Page 9: Overview

    150-402-111-02 Overview VERVIEW ® This user manual describes the HiGain Remote Unit, Model HRU-402 List 1A. This remote unit functions as the remote end of a repeaterless T1 transmission system. An HRU-402 connects either to a HiGain Line Unit (HLU) or a HiGain Doubler Unit (HDU), 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: Bpvt And Ber Features

    150-402-111-02 Overview BPVT BER F EATURES The HRU-402 and its associated line units improve compatibility with Data Link Control (DLC) feeder applications due to T1 Bipolar Violation Transparency (BPVT) transmit capability between T1 interfaces. This feature is required to support protection switching in DLC applications. Each DLC terminal must be able to monitor the integrity of its receive T1 payload and then switch to the protect line when the integrity of the path drops below specific user selected limits.

  • Page 12: Applications

    Overview 150-402-111-02 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 13: Compatibility

    150-402-111-02 Compatibility Each cable pair loop has less than 35 dB of loss at 196 kHz with 135 Ω driving and terminating impedances. Table 1 provides a guide for the loss of various cable gauges at 196 kHz and 135 Ω . Table 1 applies to the HDSL cable pairs between the HLU, HRU, and HDU modules.
  • Page 14 Compatibility 150-402-111-02 The HRU-402 mounts in the following types of shelves (indoor use): • HRE-420 (single-wide, single mount) • HRE-422 (double-wide, double mount) • HRE-425 (12-slot wall or rack mount) • HRE-427 (seven-slot wall or rack mount) • 200 Mechanics type shelves •...

  • Page 15: Product Description

    150-402-111-02 Product Description RODUCT ESCRIPTION The HRU-402 List 1A front panel is shown is Figure 2. The front panel components are described in Table HRU-402 HiGain REM UNIT Alarm LED HDSL LEDs DS-1 framing LEDs B8ZS DS-1 Line code LEDs Loopback control button Loopback LED DS-1 receive attenuation switches...
  • Page 16 Product Description 150-402-111-02 Table 2. Front-panel Features Name Function Status LEDs Table 3 on page 9 for status descriptions. Loopback (LPBK) Pressing the button for five seconds activates a remote loopback Control button towards the Network at the Remote unit Loopback (NREM). The unit can be unlooped by either pressing the LPBK control button again for five seconds or by the standard loopdown coded messages.

  • Page 17: Status Leds

    150-402-111-02 Product Description TATUS Table 3 describes the functions of the Status LEDs on the front panel. Table 3. Status LED Descriptions LED Status Indicates 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.
  • Page 18 Product Description 150-402-111-02 Table 3. Status LED Descriptions (Continued) LED Status Indicates DS-1 Code LEDs Indications for DS-1 code options. (B8ZS and AMI) B8ZS LED = Solid Indicates that the DS-1 line code option is set to B8ZS. The light green blinks one time per second when a string of excessive zeros is (DS-1 Code...

  • Page 19: Panel Circuit Board Options

    150-402-111-02 Product Description ANEL IRCUIT OARD PTIONS HRU-402 List 1A has user options that are set before you install the unit into a shelf or an enclosure. The DS-1 RCV LEV configuration switches are located on the front panel (see Figure 2 on page 7).

  • Page 20: Hlu Front Panel Display Messages

    Product Description 150-402-111-02 HLU F RONT ANEL ISPLAY ESSAGES Table 5 lists and describes the messages that may appear on the HLU line unit front panel display while the HRU-402 is connected to the HLU-231 List 8x, HLU-319 List 5x, or HLU-388 List 5x. Table 5.
  • Page 21 150-402-111-02 Product Description Table 5. HLU Front Panel Display Messages (Continued) Message Name Description S4L1 or Signal 4 Loop 1 The third doubler and an HRU are trying to establish S4L2 or Loop 2 contact with each other on loops 1 or 2 of Span 4. ACQ1 or Acquisition 1 The line unit and either the first doubler or the remote are...
  • Page 22 Product Description 150-402-111-02 Table 5. HLU Front Panel Display Messages (Continued) Message Name Description Power Feed Off HDSL span power has been turned off by setting the FEED OFF PWRF option to DIS. Power Feed One of the HDSL loops has been grounded. FEED GND Ground BAD RT?

  • Page 23: Card-Edge Pinout Connector

    150-402-111-02 Product Description 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 Figure 4. Card-edge Pinouts HRU-402 List 1A December 8, 1998...

  • Page 24: Functional Description

    Functional Description 150-402-111-02 UNCTIONAL ESCRIPTION The HiGain 2B1Q HDSL transceiver system establishes 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. HDSL technology also provides full-duplex services at standard T1 rates over copper wires between an HLU and an HRU-402, which comprise one HiGain system.
  • Page 25 150-402-111-02 Functional Description A block diagram of the HRU-402 is shown in Figure Figure 5. HRU-402 Block Diagram HRU-402 List 1A December 8, 1998...

  • Page 26: 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 27 150-402-111-02 Installation Remote enclosure HRU-402 H iG U -4 a in -1 5 D IS -2 3 Figure 6. Installing the HRU-402 in a Remote Enclosure 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.

  • Page 28: Provisioning The Hru-402

    Provisioning the HRU-402 150-402-111-02 HRU-402 ROVISIONING THE The HRU-402 can be provisioned by accessing system settings screens through the RS-232 Craft port at the HLU (or at the HRU if remote provisioning is enabled). System settings are stored in Non-Volatile Random Access Memory (NVRAM) of the HLU, meaning the data is retained even when power is lost or turned off.
  • Page 29 150-402-111-02 Provisioning the HRU-402 system to an ASCII terminal or a PC running a terminal emulation program. To connect a terminal emulator: Connect a standard, 9-pin, serial terminal cable to the Craft port (RS-232 DB-9 connector) on the HRU-402. Figure 7 shows the HRU-402 DB-9, and two types (DB-9 and DB-25) of RS-232 I/O interfaces on the maintenance terminals (PCs).
  • Page 30 Provisioning the HRU-402 150-402-111-02 • Parity: None • 8 data bits • 1 stop bit • Hardware Flow Control set to None • VT Terminal Emulation 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.”...

  • Page 31: Navigating The Maintenance Terminal Screens

    150-402-111-02 Navigating the Maintenance Terminal Screens AVIGATING THE AINTENANCE ERMINAL CREENS This section describes the use of the maintenance terminal software for viewing system performance. OGIN The HRU-402 supports both local and remote login capabilities. Remote login connects the remote unit to the HLU using the HDSL Embedded Operation Channel (EOC) as the data link between the two units.

  • Page 32: Remote Login Screen

    Navigating the Maintenance Terminal Screens 150-402-111-02 To log on and access the menus and screens using the maintenance terminal, the remote unit and HLU must have established communication with each other: Press the SPACEBAR several times to activate the autobaud feature and to display the login screen.
  • Page 33 150-402-111-02 Navigating the Maintenance Terminal Screens 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 34: System Spans

    Navigating the Maintenance Terminal Screens 150-402-111-02 YSTEM PANS 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 35: Navigation Keys

    150-402-111-02 Navigating the Maintenance Terminal Screens AVIGATION Table 6 describes keys you can use on the maintenance terminal keyboard to navigate within the HRU-402 menus. Table 6. Maintenance Terminal Navigational Keys Function Logs into the Remote Terminal menus Exits the current menu Updates a report/screen Selects the next Span Status screen Remote logoff...

  • Page 36: Initializing The Maintenance Terminal Screens

    Initializing the Maintenance Terminal Screens 150-402-111-02 NITIALIZING THE AINTENANCE ERMINAL CREENS SPACEBAR Press the several times to initiate the autobaud connection and to initialize the Maintenance Terminal screens. This will return you to the initial Remote Login screen shown in Figure 9 on page EMOTE ERMINAL...
  • Page 37 150-402-111-02 Initializing the Maintenance Terminal Screens Table 7. 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 38: View Span Status

    Initializing the Maintenance Terminal Screens 150-402-111-02 TATUS 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 39 150-402-111-02 Initializing the Maintenance Terminal Screens 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 1 STATUS...
  • Page 40 Initializing the Maintenance Terminal Screens 150-402-111-02 Table 8. 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. Loopback Indicates Off condition or identifies specific active loopback. See Table 10 on page Power Level Indicates the HDSL Power Feed voltage mode: High, Low, or Disabled.

  • Page 41: System Settings

    150-402-111-02 Initializing the Maintenance Terminal Screens Table 8. Span Status Fields and Descriptions (Continued) Field Description DS-1 The number of seconds during which the DS-1 input signal was absent 24-Hour UAS (125 or more consecutive 0s). This value is a running total of the last 24 Count Hours.

  • Page 42: System Settings Screen

    Initializing the Maintenance Terminal Screens 150-402-111-02 SYSTEM SETTINGS TIME: 03:40:57 DATE: 10/04/98 CIRCUIT ID#: EQUALIZATION..: 0 MARGIN ALARM THRESH: 4 SMART-JACK LPBK.: ENABLED RLOS(DS1 LOS) ALARM: ENABLED SPECIAL LPBK..: GNLB ALARM PATTERN..: AIS POWER...: AUTO BPVT....: ENABLED ZBTSI...: OFF BER ALARM THRESH: NONE LOOPBACK TIMEOUT: NONE ALARM...: DISABLED DS1 LINE CODE...: AMI...
  • Page 43 150-402-111-02 Initializing the Maintenance Terminal Screens Table 9. System Settings Fields and Descriptions Field Description Time Time of day when System Settings were checked. Date Date when System Settings were checked. Equalization Indicates settings for equalizer of either EXT, 0 (DSX-1 for 0-133 ft), 133 (DSX-1 for 133-266 ft), 266 (DSX-1 for 266-399 ft), 399 (DSX-1 399-533 ft), 533 DSX-1 for 533-655 ft).

  • Page 44: Additional Information On Selected Options

    Initializing the Maintenance Terminal Screens 150-402-111-02 Table 9. System Settings Fields and Descriptions (Continued) Field Description Margin Alarm Indicates the settings for the margin alarm thresholds. (ALM) Threshold (THRES) Remote (DS-1 Indicates whether a LOS (Loss of Signal) at the HRU DS-1 input LOS) Alarm generates an AIS and Alarm, or LOS and no Alarm condition at the HLU.

  • Page 45: Alarm Pattern (Almp) Option

    150-402-111-02 Initializing the Maintenance Terminal Screens Alarm Pattern (ALMP) Option To further improve HiGain’s compatability with the switch-to-protect features used in DLC feeder applications, the line unit has an ALMP option which allows the user to select either AIS or LOS T1 output payloads for the following alarms: •...

  • Page 46: Loopback Mode

    Initializing the Maintenance Terminal Screens 150-402-111-02 If the HRU-402 is connected to an older HLU, its DS-1 AUTO mode performs as it does in older models where its output code is set by its local T1 input code. OOPBACK The Loopback Mode menu only appears if the HRU-402 is connected to an: •...

  • Page 47: Loopback Menu Without Doublers

    150-402-111-02 Initializing the Maintenance Terminal Screens 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 48: Loopback Menu With Three Doublers

    Initializing the Maintenance Terminal Screens 150-402-111-02 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) C. NETWORK LOOP HRU (NREM) D. NETWORK LOOP DOUBLER 1 (NDU1) F.
  • Page 49 150-402-111-02 Initializing the Maintenance Terminal Screens Table 10. 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.

  • Page 50: Loopback Operation

    Initializing the Maintenance Terminal Screens 150-402-111-02 Loopback Operation Loopbacks permit you to perform isolated diagnostic tests at specific points of the circuit. The transmitted signal is returned to the sending device after passing through a data communications link or network. This allows you to compare the returned signal with the transmitted signal and to determine if there is a problem with the circuit.
  • Page 51 150-402-111-02 Initializing the Maintenance Terminal Screens The HRU-402 supports four types of loopbacks (Figure 18 on page 42). • Network Remote (NREM): the DSX signal is looped back to the DSX at the HRU. • SmartJack (SMJK): loopback at the HRU towards the network initiated by a 2-in-5 in-band loopback code or out of band ESF facility data link (FDL) code.

  • Page 52: Smartjack Set To Ena

    Initializing the Maintenance Terminal Screens 150-402-111-02 SmartJack Set to ENA Upon detection of a valid SmartJack Loopback command, a loopback is activated and the T1framer chip transmits the AIS pattern to the NI and also back to the HRU-402 T1 receiver circuit. In addition, the customer’s T1 XMT input is disconnected and terminated.

  • Page 53: Loopback Test Procedures

    150-402-111-02 Initializing the Maintenance Terminal Screens When the HRU is in its AIS/DIS SmartJack Loopback state, its T1 input LOS, Code and Frame monitoring circuits are connected to the network signal which is being looped back to these circuits through the loopback relay. The CPE input signal is no longer being monitored since its input circuit has been opened and terminated.

  • Page 54: View Performance Data

    Initializing the Maintenance Terminal Screens 150-402-111-02 To test the loopbacks: Press the loopback control button on the remote unit front panel for at least 5 seconds (see Figure 2 on page 7 for the location of this button). Verify that the yellow HRU front panel LPBK LED turns on, indicating that the HRU is in its digital (NREM) loopback state.

  • Page 55: Performance Data Screen Without Doublers

    150-402-111-02 Initializing the Maintenance Terminal Screens From the Remote Terminal Main Menu, type to display the Performance Data screen. When no doublers are in use, the following Performance Data screen displays: Date: 10/04/98 PERFORMANCE DATA CIRCUIT ID#: ERRORED SECONDS/UNAVAILABLE SECONDS HDSL-1 HDSL-2 00:00...

  • Page 56: Span 1 Performance Data Screen

    Initializing the Maintenance Terminal Screens 150-402-111-02 When doublers are in use, the following Performance Data screen displays: Date: 10/04/98 SPAN 1 PERFORMANCE DATA CIRCUIT ID#: ERRORED SECONDS/UNAVAILABLE SECONDS DS-1 HDSL-1 HDSL-2 HDU1 HDU1 00:00 000/000 000/000 000/000 000/000 000/000 000/000 00:15 000/000 016/012...

  • Page 57: View Performance History

    150-402-111-02 Initializing the Maintenance Terminal Screens ERFORMANCE ISTORY The View Performance History (7-Day) screen shows the number of ES/UAS occurrences in 24-hour increments for a 7-day period for the HLU and the HRU-402 and doublers if so configured. This screen displays ES/UAS for the HLU and HRU-402 DS-1 signal, HDSL Loop 1 and HDSL Loop 2 (for non-doubler applications).

  • Page 58: Span 1 Performance History Screen

    Initializing the Maintenance Terminal Screens 150-402-111-02 When doublers are in use, the following Performance History (7-Day) screen is displayed: Time: 00:16:55 7 DAY HISTORY CIRCUIT ID#: SPAN 1 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 59: View Alarm History

    150-402-111-02 Initializing the Maintenance Terminal Screens LARM ISTORY The View Alarm History screen allows you to view history of 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 60 Initializing the Maintenance Terminal Screens 150-402-111-02 Table 11 lists the Alarm History fields and descriptions. These descriptions apply to the Alarm History for doubler applications as well. Table 11. 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 61 150-402-111-02 Initializing the Maintenance Terminal Screens 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 62: View System Inventory

    Initializing the Maintenance Terminal Screens 150-402-111-02 YSTEM NVENTORY The System Inventory screen allows you to view the model number, list number, and software versions of all circuit modules. 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) of the HLU, meaning the data remains even when power is lost or turned off.

  • Page 63: View System Inventory Screen

    150-402-111-02 Initializing the Maintenance Terminal Screens From the Remote Terminal Main Menu screen, type to display the View System Inventory screen: SYSTEM INVENTORY TIME: 03:49:22 DATE: 10/04/98 CIRCUIT ID: UNIT PRODUCT UNIT ID HLU-231 L8E V6.2 NOT REQUIRED HRU-402 L1A V1.3 HDU-404 V1.1 HDU-404...

  • Page 64: Appendix A: Specifications

    Appendix A: Specifications 150-402-111-02 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 Consumption 3.1 W (when connected to the following line units:...
  • Page 65 150-402-111-02 Appendix A: Specifications DS-1 Line impedance 100Ω Pulse output 0 dB (Receive Level [REC LEV] = 0), -7.5 db (REC LEV = -7.5), -15 dB (REC LEV = 15) Input level sensitivity > -22.5 dB Line rate 1.544 Mbps ± 200 bps System output wander 0.3 UI (648 ns.) max (looped)

  • Page 66: Appendix B: Service And Support

    B: S PPENDIX ERVICE AND 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 67: Appendix C: Abbreviations

    150-402-111-02 Appendix C: Abbreviations C: 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 68 Appendix C: Abbreviations 150-402-111-02 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 Facility Data Link High-bit-rate Digital Subscriber Line HDSL HiGain Doubler Unit HiGain Line Unit HiGain Remote Enclosure...
  • Page 69 150-402-111-02 Appendix C: Abbreviations Remote DS-1 Alarm Receive Level REC LEV Remote Loss of Signal RLOS SmartJack AIS SAIS Super Frame Special Loopback SPLB Total Error Count Total System Error Count TSEC Transport System Generic Requirements TSGR Unavailable Seconds Underwriters Laboratory Transmit Zero Byte Time Slot Interchange ZBTSI...
  • Page 70 Appendix C: Abbreviations 150-402-111-02 December 8, 1998 HRU-402 List 1A...

  • Page 71: 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 72 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 74 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 : 150-402-111-02 OCUMENT ´,A+¶3}¨ 1233114...

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