HiGain USER MANUAL HiGain HDSL2 H 2 T U * C 3 1 9 L 4E M O D E SETUP L B K STATUS B R G O U L T I N E H2TU-C-319 List 4E Product Catalog: H2TU-C-L4E CLEI Code: VACHYVYG B R G I NL I N E R S 2 3 2 DCE
LTPH-UM-1049-02, Issue 2 Revision History of This Manual Issue Release Date Revisions Made 1 October 5, 2001 Initial release. 2 January 9, 2002 BERT update. Copyright January 9, 2002 © 2002 ADC DSL Systems, Inc. All rights reserved. Trademark Information ADC is a registered trademark of ADC Telecommunications, Inc. HiGain is a registered trademark of ADC DSL Systems, Inc.
LTPH-UM-1049-02, Issue 2 Using This Manual USING THIS MANUAL The following conventions are used in this manual: • Monospace type indicates screen text. • Keys you press are indicated by small icons such as Y or ENTER . Key combinations to be pressed simultaneously are indicated with a plus sign as follows: CTRL + ESC . • Items you select are in bold. • Three types of messages, identified by icons, appear in text. Notes contain information about special circumstances.
Inspecting Shipment iv LTPH-UM-1049-02, Issue 2 January 9, 2002 H2TU-C-319 List 4E
LTPH-UM-1049-02, Issue 2 Table of Contents TABLE OF CONTENTS Overview ____________________________________________________________________________ 1 Features ..............................................................................................................................................1 Compatibility .....................................................................................................................................2 Applications ..............................................
Table of Contents LTPH-UM-1049-02, Issue 2 Testing _____________________________________________________________________________ 52 System Alarms................................................................................................................................. 52 Alarm Option for the Digital Loop Carrier Feed .............................................................. 53 Retiring System Alarms ................................................................................................
LTPH-UM-1049-02, Issue 2 List of Figures LIST OF FIGURES 1. H2TU-C-319 List 4E Front Panel ...................................................................................................................3 2. Installing the H2TU-C-319 List 4E into a Shelf .............................................................................................8 3. Logon Screen..............................................................................................................................................
List of Tables LTPH-UM-1049-02, Issue 2 LIST OF TABLES 1. Front-Panel Description .................................................................................................................................. 4 2. Front-Panel Display Messages ........................................................................................................................ 5 3. Navigational Keys for the HiGain HDSL2 Maintenance Terminal Screens ................................................ 12 4.
LTPH-UM-1049-02, Issue 2 Overview OVERVIEW The H2TU-C-319 List 4E (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. Providing full-rate T1 access using a single copper pair, HDSL2 is a cost-effective solution that offers an open architecture. The open architecture inherent in HDSL2 guarantees interoperability allowing simple and economic accommodation of network growth.
Overview • LTPH-UM-1049-02, Issue 2 Configuration options – Selectable DS1 pre-equalizer – Bipolar Violation Transparency (BPVT) options – Bit Error Rate (BER) alarm – Power Back Off Network (PBON) and Power Back Off Customer (PBOC) options for configuring output levels – Loss of Signal/Alarm Indication Signal (LOS/AIS) payload alarm option – Remote provisioning • Compatible with HMS-358 Soneplex® Wideband 3190 shelves only • Digital Data Service (DDS) latching loopback • Network Managem
LTPH-UM-1049-02, Issue 2 Front Panel FRONT PANEL Figure 1 shows the H2TU-C-319 List 4E front panel. Table 1 on page 4 describes the front-panel components. For pinout diagrams of the H2TU-C-319 List 4E card-edge connector and craft port, refer to “Appendix A Specifications” on page 65.
Front Panel LTPH-UM-1049-02, Issue 2 Table 1. Front-Panel Description Front-Panel Feature Function Front-panel display Displays four-character status, provisioning, and alarm system messages. The front-panel display illuminates when power is initially applied. To conserve power the display only remains on for 5 minutes. Using the MODE or LBK pushbuttons reactivates the display and restarts the 5-minute timer. Refer to Table 2 on page 5 for a listing of the four-character messages.
LTPH-UM-1049-02, Issue 2 Front Panel Table 2 lists the front-panel display messages. The four-character display reports the code of an alarm, loopback, or diagnostic message and, in some cases, is followed by a second four-character message that modifies the first message with a value or current configuration setting. Table 2.
Front Panel LTPH-UM-1049-02, Issue 2 Table 2. Message Front-Panel Display Messages (Continued) Full Name Description LOOPBACK MESSAGES CLOC Customer Local Loopback CREM Customer Remote Loopback Signal from customer is looped back to the customer at the H2TU-R. Signal from customer is looped back to the customer at H2TU-C. NLOC NREM Network Local Loopback Network Remote Loopback DSX-1 signal is looped back to the network at the H2TU-C. DSX-1 signal is looped back to the network at the H2TU-R.
LTPH-UM-1049-02, Issue 2 Front Panel Table 2. Message Front-Panel Display Messages (Continued) Full Name Description SYSTEM INFORMATION MESSAGES (a) CODE xxxx Line Code: AMI or B8ZS FRM xxxx Frame: SF, ESF, or UNFR LATT xx Loop Attenuation The DS1 line code setting: Alternate Mark Inversion (AMI) or Bipolar with 8-Zero Substitution (B8ZS). Defines the type of frame pattern being received from the DSX-1: SuperFrame (SF), Extended SuperFrame (ESF), or Unframed (UNFR).
Installation LTPH-UM-1049-02, Issue 2 INSTALLATION Upon receipt of the equipment, 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. H2TU-C-319 CO shelf Figure 2. Installing the H2TU-C-319 List 4E into a Shelf When installing an H2TU-C in a chassis, be sure to wear an antistatic wrist strap. Avoid touching components on the circuit board.
LTPH-UM-1049-02, Issue 2 Installation VERIFICATION Once the H2TU-C is installed, verify that it is operating properly. To do this, monitor the following: • Status LED • Status messages reported by the front-panel display (Table 2 on page 5 lists the status messages). Verification without an H2TU-R Remote Unit If there is no H2TU-R remote unit installed: 1 Verify that the H2TU-C powers up. The front-panel display illuminates and reports status messages. (See Table 2 on page 5 lists the messages.
Provisioning LTPH-UM-1049-02, Issue 2 PROVISIONING There are two provisioning methods: • • Use the MODE and LBK pushbuttons on the front panel of the H2TU-C to: – Set system options – Reset the H2TU-C to its factory default settings for system options – Display system option settings (scroll mode) – Select system loopbacks – Select MTA test mode Use a maintenance terminal, such as an ASCII terminal or a PC running terminal emulation software, connected to the H2TU-C craft port or an HMU craft
LTPH-UM-1049-02, Issue 2 Provisioning Resetting to Factory Default Values All user options for the H2TU-C, described in Table 5 on page 18, can be set to the factory default values using the MODE and LBK pushbuttons. To set the user options to their default values: 1 Press the LBK pushbutton for 6 seconds until the following message appears: DFLT NO 2 Press the LBK pushbutton until the DFLT NO message is displayed.
Provisioning LTPH-UM-1049-02, Issue 2 USING A MAINTENANCE TERMINAL Connecting to a Maintenance Terminal The craft port on the front panel allows you to connect the H2TU-C to a maintenance terminal (ASCII terminal or PC running a terminal emulation program). Once connected to a maintenance terminal, you can access the maintenance, provisioning, and performance screens.
LTPH-UM-1049-02, Issue 2 Provisioning Most VT100 emulation programs support a print screen option. For Windows-based programs, such as Procomm or HyperTerminal, see the Help menu for instructions. Menu bar Monitor Performance Event Log Config Inventory Report Rlogon Help +------------------------------------------+ | | | ADC DSL Systems, Inc. | | HiGain HDSL2 | | | | Voice: 800.638.0031 | | Fax : 714.832.
Provisioning LTPH-UM-1049-02, Issue 2 PROVISIONING TASKS 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 15). • Make any configuration changes (see “Configuring the System” on page 16).
LTPH-UM-1049-02, Issue 2 Provisioning Setting Circuit ID Numbers The Inventory menu provides product information on all units in the system and allows setting of the circuit and unit identification numbers. Monitor Performance Event Log Config Inventory -------------------------- Product Information Unit : H2TU-C H2TU-R Product : H2TU-C-319 H2TU-R-402 List : 4E 6E Sw Ver. : 3.00 3.00 Build # : 10 25 Checksum : 0x604A 0x9616 H2 Xcvr : L1-HB2 1.31 L1-RA2 1.
Provisioning LTPH-UM-1049-02, Issue 2 Configuring the System The Config menu (see Figure 6 below) allows you to make the following changes: • Standard options (see “Making Changes to Standard and ADC Options” on page 16). • ADC options (see “Making Changes to Standard and ADC Options” on page 16). • Date and time (see “Setting Date and Time” on page 14). • Master clear (see “Clearing the History, Alarm, and Event Log Screens” on page 33).
LTPH-UM-1049-02, Issue 2 Monitor Provisioning Performance Event Log Config Inventory Report Rlogon Help +-----------------------+ | Standard Options -> | +-----------------------------------------------------+ | Loopback Timeout (LBTO) : 120 min | | Loop Attenuation Threshold (LATT) [0-40] : 32 dB | | Margin Threshold (MARG) [0-15]: 5 dB | | DS1 Frame Formatting (FRMG) : AUTO | | DS1 Line coding (DS1) : B8ZS | | H2TU-C Equalization (EQL) : 0 ft | | H2TU-R Line Buildout (RLBO) : -7.
Provisioning LTPH-UM-1049-02, Issue 2 Table 5 describes the Standard Config screen options and lists their front-panel display codes. Table 6 on page 19 describes the ADC Config screen options and lists their front-panel display codes. Selections in bold typeface are the factory default settings. Table 5.
LTPH-UM-1049-02, Issue 2 Table 5. Standard Config Menu Options Power Back Off Customer Provisioning H2TU-C-319 List 4E Standard Config Menu Options (Continued) Front-Panel Display Code Selection Description PBOC DEF Configures the power output levels of the H2TU-R network unit towards the network to comply with the Default template as defined in Section 6.1.4.2 of ANSIT1.E1.4.
Provisioning LTPH-UM-1049-02, Issue 2 Table 6. H2TU-C-319 List 4E ADC Config Menu Options (Continued) ADC Config Menu Options Front-Panel Display Code Selection Description Minor Alarm ALM ENA Enables the generation of the output alarm on pin H when a system alarm condition occurs. DIS Disables the generation of the output alarm on pin H when a system alarm condition occurs. CI If ALMP is set to AIS, this option specifies which pattern is sent to the network when a remote LOS or AIS occurs.
LTPH-UM-1049-02, Issue 2 Table 6. ADC Config Menu Options Active DS1 Port See “Dual DSX-1 Port Option” on page 31. H2TU-C-319 List 4E Provisioning H2TU-C-319 List 4E ADC Config Menu Options (Continued) Front-Panel Display Code Selection Description ADS1 MUX The MUX mode selects the DSX-1 (MUX) port as the active source for the DS1 Signal to transmit to the HSDL Line Port #1. An AIS signal is sent to the auxiliary Port #2. Equalizer settings apply to the MUX DSX-1 port.
Provisioning LTPH-UM-1049-02, Issue 2 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.
LTPH-UM-1049-02, Issue 2 Provisioning SF RAI to SF RAI-CI Toward Network (RACI) Option. In general, the Remote Alarm Indication Customer Installation (RAI-CI) signal is a RAI signal which contains a signature indicating that an LOF or AIS failure has occurred within the customer’s network.
Provisioning LTPH-UM-1049-02, Issue 2 used to embed SPRM or NPRM into the datalink toward the network. During conversion, frame bit errors are regenerated to ensure transparency. The HDSL2 system attempts to find ESF or SF framing or determines that no framing exists. The DS1 framing is then synchronized with the HDSL2 frame. If the framing is lost, the system generates an Out-of-Frame (OOF) defect which results in UAS-P. As a result, the system reverts to frame search mode.
LTPH-UM-1049-02, Issue 2 Provisioning Table 9. Extended SuperFrame Format Frame Bits Framing Pattern Sequence (FPS) - 2 kps ESF Number Frame Bit for Datalink (FDL) - 4 kbps 1 m 2 3 m Cyclical Redundancy Check (CRC) Bits - 2 kbps C1 4 5 0 m 6 7 C2 m 8 9 0 m 10 11 C3 m 12 13 1 m 14 15 C4 m 16 17 0 m 18 19 C5 m 20 1 21 22 m C6 23 24 m 1 Table 10.
Provisioning LTPH-UM-1049-02, Issue 2 Fractional T1 (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” until the correct loopdown sequence has been detected.
LTPH-UM-1049-02, Issue 2 Provisioning a successful loopdown is reported; otherwise, a failed loopdown is reported. The loop-down can also be initiated by depressing the H2TU-R loopback control button or by any of the standard 3-in-5 loop-down commands. The implemented detection/release loopback algorithm functions properly in the presence of a 10 -3 bit error rate. Since the FT1 mode is a combination of both the full T1 and the latching loopback modes, all codes are always active.
Provisioning LTPH-UM-1049-02, Issue 2 Test Access The H2TU-C’s PC board’s card-edge connector, shown in Figure 33 on page 68, has three separate segments labeled S1 (segment 1), S2 (segment 2), and S3 (segment 3). S3 contains the standard 3192 pin connections. The two extra segments, S1 and S2, have pin connections that support additional features called Dual DSX-1 port option and Metallic Test Access (MTA), respectively, as shown in Figure 9 below through Figure 12 on page 30.
LTPH-UM-1049-02, Issue 2 Provisioning Metallic Test Access. Figure 9 on page 28 shows the block diagram of the metallic test access features which are under control of the two relays, K1 and K2. The S2 metallic test access ports (IN or OUT) are bused to terminal block TB6 located on the HMS-358 backplane, as shown in Figure 10 below. Figure 11 displays the location of TB6 on the HMS-358 backplane.
Provisioning LTPH-UM-1049-02, Issue 2 The MTAF IN port of TB6 can connect to an external test facility circuit consisting of an HDSL2 wire line simulator or test pair and a golden H2TU-R remote HDSL2 unit. This connection allows the H2TU-C Unit Under Test (UUT) to be tested from its DSX-1 interface on the simulated test circuit. This allows any problem to be isolated to either the equipment or the facilities.
LTPH-UM-1049-02, Issue 2 Provisioning The separate control of K1 and K2 permits another test scenario. Two external HDSL2 spans can be looped together at TB6 if the two H2TU-C line units that connect to the two spans both enable their MTAF states and close K1 in each unit. This will loop the two pairs together and allow metallic cable tests to be performed from any point in the loop where both pairs can be accessed.
Provisioning LTPH-UM-1049-02, Issue 2 Resetting to Factory Defaults Resetting the H2TU-C to its original factory settings may cause interruption of service. To reset the H2TU-C to its original factory defaults: C 1 Press 2 Use the 3 Press Y to select the Config menu. ↑ and ↓ arrow keys to select Set Factory Defaults, then press if you want to reset the H2TU-C, or press Monitor Performance Event Log N ENTER . to cancel this action.
LTPH-UM-1049-02, Issue 2 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 startup session and ensures that you have meaningful data thereafter.
Monitoring System Activity and Performance LTPH-UM-1049-02, Issue 2 MONITORING SYSTEM ACTIVITY AND PERFORMANCE The H2TU-C-319 List 4E provides the following maintenance screens for monitoring system activity and assessing performance: 34 • The Monitor screens provide a graphical representation of circuit activity and allow initiation of loopbacks. • The Performance screens provide current, 24-hour, 48-hour, and 31-day performance histories and a continuous alarm history.
LTPH-UM-1049-02, Issue 2 Monitoring System Activity and Performance USING THE MONITOR SCREEN TO VIEW SYSTEM ACTIVITY 1 Press M to view the system diagram. Figure 15 shows an armed circuit with an active loopback and alarms. Terms used on the system diagram are defined in the onscreen Help menu glossary. Abnormal situations are highlighted on the diagram. Table 14 on page 36 describes the screen field.
Monitoring System Activity and Performance LTPH-UM-1049-02, Issue 2 Table 14. Monitor Screen Descriptions Field Description Active Loopback An active loopback is indicated on the lower third of the Monitor screen. Available loopbacks are indicated by gray text. See Table 22 on page 56 for a summary of the HiGain HDSL2 generic loopback codes and activation methods. Alarm Type Indicates type of alarm.
LTPH-UM-1049-02, Issue 2 Monitoring System Activity and Performance USING THE PERFORMANCE SCREENS TO VIEW PERFORMANCE DATA 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 25 on page 44 and Figure 26 on page 45) or DS1 interfaces (Figure 26 on page 45) on a continuous basis.
Monitoring System Activity and Performance LTPH-UM-1049-02, Issue 2 Performance History at the DS1 Interface The Performance History for the DS1 interface provides 31-day, 48-hour, 25-hour, and current statistics screens for the H2TU-C and the H2TU-R (as viewed from the H2TU-C). Figure 16 below and Figure 17 on page 38 are examples of DS1 performance history screens at the remote unit. Figure 18 on page 39 is an example of DS1 performance history screens at the line unit.
LTPH-UM-1049-02, Issue 2 Monitor Monitoring System Activity and Performance Performance Event Log Config Inventory Report Rlogon Help H2TU-R DS1 48 Hour History (Page 1 of 4) -----------------------------------------------------------------------------Time CV-L ES-L SES-L UAS-L PDVS-L ES-P SES-P UAS-P *00:00 *01:00 *02:00 *03:00 *04:00 *05:00 *06:00 *07:00 *08:00 *09:00 *10:00 *11:00 - - - - - - - - Press: (N)ext Page, (P)revious Page, C(l)ear History -------------------------------------
Monitoring System Activity and Performance LTPH-UM-1049-02, Issue 2 Performance History at the HDSL2 Interface The HDSL2 interface has 31-day, 48-hour, 25-hour, and current statistic screens for the H2TU-C. Figure 19 and Figure 20 below are examples of 31-day and 48-hour performance history screens. Figure 21 on page 41 is an example of a 25-hour performance history screen. Refer to Table 16 on page 41 for descriptions of the kinds of errors reported on all HDSL2 performance screens.
LTPH-UM-1049-02, Issue 2 Monitor Monitoring System Activity and Performance Performance Event Log Config Inventory Report Rlogon Help H2TU-C HDSL2 25 Hour History (Page 1 of 9) -----------------------------------------------------------------------------Time CV ES SES UAS LOSWS *22:15 *22:30 *22:45 *23:00 23:15 23:30 23:45 00:00 00:15 00:30 00:45 01:00 - - - - - Press: (N)ext Page, (P)revious Page, C(l)ear History ----------------------------------------------------------------------------Us
Monitoring System Activity and Performance LTPH-UM-1049-02, Issue 2 Current Statistics Screens for the DS1 Interface Examples of current statistics screens are shown below. Figure 22 and Figure 23 show statistics for the DS1 interface at the remote unit and line unit, respectively. These screens report 1-day, 1-hour, and 15-minute statistics. Refer to Table 15 on page 39 for descriptions of the kinds of errors reported on these screens.
LTPH-UM-1049-02, Issue 2 Monitoring System Activity and Performance Current Statistics for HDSL2 Interface Figure 24 shows statistics for the HDSL2 interface at the H2TU-C. This screen reports 1-day, 1-hour, and 15-minute statistics. Refer to Table 16 on page 41 for descriptions of the kinds of errors reported on this screen.
Monitoring System Activity and Performance LTPH-UM-1049-02, Issue 2 USING THE PERFORMANCE SCREENS TO VIEW ALARM DATA To access the alarm history screens: P 1 Press to select the Performance menu. 2 Press the SPACEBAR to select an interface (H2TU-C DS1, H2TU-R DS1, H2TU-C HDSL2, or H2TU-R HDSL2), then press ENTER . 3 Press the SPACEBAR until Alarm History is selected, then press • Press N or • Press L to clear the selected alarm history screen. P ENTER .
LTPH-UM-1049-02, Issue 2 Monitor Monitoring System Activity and Performance Performance Event Log Config Inventory Report Rlogon Help H2TU-R DS-1 Alarm History ----------------------------------------------------------------------------Alarm First Last Status Count RLOS RAIS RAI TX RAI-CI PRM-NE PRM-FE DBER 08/16/01 00:37 08/16/01 00:45 OK OK OK OK OK OK OK 0 0 0 0 0 0 7 Press: C(l)ear Alarm History -----------------------------------------------------------------------------Use to cyc
Monitoring System Activity and Performance LTPH-UM-1049-02, Issue 2 Table 17. DS1 Alarm Descriptions (Continued) Screen Alarm Front-Panel Alarm Description DBER xxx-DBER Bit Error Rate—The DS1 BER has exceeded the built-in 24-hour threshold limits of approximately 10-6. (xxx denotes either TUC or TUR.) (a) This is a DS1-specific alarm that also issues a minor alarm (sent to the management unit or the backplane), if enabled. (b) AIS-CI is a modified AIS alarm pattern.
LTPH-UM-1049-02, Issue 2 Monitoring System Activity and Performance Table 18. HDSL2 Alarm Descriptions Screen Alarm Front-Panel Alarm Description MTAE MTAE Metallic Test Access Equipment—The H2TU-C is in its MTA/LOSW test state. MTAF MTAF Metallic Test Access Facility—The H2TU-C is in its MTA/LOSW test state. LOSW LOSW Loss of Sync Word—The HDSL2 loop has lost synchronization. MAL xxx-MAL Margin—The margin on the HDSL2 loop has dropped below the minimum threshold value set for the system.
Monitoring System Activity and Performance LTPH-UM-1049-02, Issue 2 USING THE SYSTEM EVENT LOG TO TRACK EVENTS To view a running log of system events, press E to select the Event Log. The Event Log displays the date and time of the 100 most recent events (most recent displayed first) and provides a description of each event. Table 19 on page 49 lists the event log messages. • Press N or • Press T to return to the top of the log. • Press L to clear the event log.
LTPH-UM-1049-02, Issue 2 Monitoring System Activity and Performance Table 19.
Monitoring System Activity and Performance LTPH-UM-1049-02, Issue 2 USING THE REPORT MENU The Report menu (Figure 29) 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 20 on page 51 describes the four types of reports provided by the Report menu. To select each individual report, do the following: O 1 Press to select Report menu.
LTPH-UM-1049-02, Issue 2 Monitoring System Activity and Performance Table 20.
Testing LTPH-UM-1049-02, Issue 2 TESTING This section provides information about front-panel system alarms, LOS and AIS response, OCT55 test procedure, and loopback testing. SYSTEM ALARMS Table 21 summarizes all possible system alarms in order of priority as they appear on the front panel. When multiple alarms occur, the front-panel display only reports the highest priority alarm.
LTPH-UM-1049-02, Issue 2 Testing Table 21. Front-Panel Message (a) Front-Panel System Alarms Summary (Continued) Alarm Description To Inhibit: xxx-HBER(b) HDSL2 Block Error Rate Select NONE for the HBER system option. xxx-MAL Margin Alarm xxx-LA Loop Attenuation The HDSL2 BER has exceeded the set threshold limits of 10-6 or 10- 7. (xxx denotes either TUC or TUR. If TUC and TUR occur at the same time, then TUC displays.
Testing LTPH-UM-1049-02, Issue 2 Remote LOS and AIS Response Figure 30 shows the differing ways the H2TU-R can respond to the network, depending on the configuration of the TLOS, NLBP, FT1, ALMP, and NAIS configuration options described in Table 5 on page 18 and Table 6 on page 19. See Table 13 on page 27 for the response of the H2TU-C and H2TU-R to LOS and AIS alarm conditions.
LTPH-UM-1049-02, Issue 2 Testing LOOPBACK OPERATION HiGain HDSL2 has a family of loopback options for analyzing circuit functionality. The loopback signal is transmitted and returned to the sending device for comparison. This allows you to verify the integrity of the HDSL2 channels to the H2TU-C, the H2TU-C DSX-1 interface and the DS1 channels to the customer.
Testing LTPH-UM-1049-02, Issue 2 Generic Loopback Commands The HiGain HDSL2 Generic Loopback (GNLB) commands allow you to use in-band codes to loop up either NLOC (4-in-7) or NREM (3-in-7) towards the network. In addition, these in-band codes loop up CREM (6-in-7) or CLOC (5-in-7) towards the customer. Either loopup condition can be terminated (looped down) with the 3-in-5, SMJK loopdown code. All in-band codes must be present for at least 5 seconds before the HiGain HDSL2 system responds.
LTPH-UM-1049-02, Issue 2 Testing SmartJack Loopback Commands The HiGain HDSL2 SmartJack (SMJK) Loopback (LPBK) commands allow you to use in-band, out-of-band, and universal codes to initiate and terminate loopback testing of the HiGain HDSL2 circuit. (See “SmartJack Test Procedure” on page 64 for additional information.) MANUAL LOOPBACK SESSION A manual loopback session allows you to select any one of the HiGain HDSL2 loopbacks listed in Table 22 on page 56.
Testing LTPH-UM-1049-02, Issue 2 2 Press LBK to activate NLOC. The display changes to MAN LPBK NLOC. 3 Press MODE to advance to the next available loopback: 4 • NRE? = NREM • CRE? = CREM • CLO? = CLOC Press LBK to activate the selected loopback. The previous loopback is terminated. Once a loopback is selected and activated, the loopback stays active until it times out (based on the LBTO setting). When a loopback times out, the display then returns to the normal display mode.
LTPH-UM-1049-02, Issue 2 Testing You can also manually terminate the MTA state and exit the MAN LPBK mode by simultaneously pressing the MODE and LBK pushbuttons for 3 or more seconds. If no loopback or MTA is active, the MAN LPBK mode automatically terminates after 30 seconds.
Testing LTPH-UM-1049-02, Issue 2 Loopbacks Toward Network TLOS* HRU-412 LOGIC HRU-412 HDSL2 SPAN HLU H2TU-C All ones H2TU-R HDSL2 SPAN H2TU-C HLU 1000000 11000 SMJK* 1-in-6 HRU-412 HRU-412 2-in-5 H2TU-R All ones FF02 ✝ C742 ‡ H2TU-C HLU HDSL2 SPAN 1110000 NREM* NREM HRU-412 33-in-7 in 7 HRU-412 All ones FF1E ✝ NLOC 4-in-7 HLU CLOC D3D3 ‡ 1111000 HRU-412 H2TU-R 5 IN 7 All ones HDSL2 SPAN HRU-412 DSX-1 H2TU-C All ones 3F1E ✝ CREM D3D3 ‡ HLU 6-in-7 1111110 Loopbacks Toward Cus
LTPH-UM-1049-02, Issue 2 Testing A2LB Test Procedures Using the codes listed in Table 23, a network tester can activate NLOC or NREM loopbacks (or SMJK, if enabled). A tester at the customer premises can activate CLOC or CREM loopbacks. All loopbacks shown in Table 23 can also be initiated from the H2TU-C front-panel MODE and LBK pushbuttons (see “Setting Options through MODE and LBK” on page 10). Table 23.
Testing LTPH-UM-1049-02, Issue 2 To perform the A2LB test procedures: 1 Send the in-band Arming and NI LPBK code 11000 to the H2TU-C for at least 5 seconds. 2 Monitor the output of the H2TU-C for the return of the pattern. Return of the pattern indicates one of the following: 3 • The H2TU-R has looped up, if the SMJK Loopback option is enabled. • An external NID has looped up, if the SMJK Loopback option is disabled, and the H2TU-C and H2TU-R have been armed.
LTPH-UM-1049-02, Issue 2 Testing The Time-out Override function is only valid for the current active loopback. The automatic time-out timer is restored during subsequent loopback sessions. 5 Once the test is complete, do one of the following: • If the system is to loopdown but remain Armed, send the IR (Intelligent Repeater) LPDN code for universal loopdown.
Testing LTPH-UM-1049-02, Issue 2 A3LB and A4LB Test Procedures The H2TU-C can be looped back by sending the Addressable Office Repeater (AOR) LPBK activation code 1111-1111-0001-1110 (FF1E) for at least 5 seconds. This causes the H2TU-C to enter the NLOC state. The Loopback Time-out setting (see “Setting the Loopback Time-Out Option” on page 57) determines the duration of this loopback unless it is overridden by the reception of a second identical 16-bit loopup command before the timer expires.
LTPH-UM-1049-02, Issue 2 Appendix A - Specifications APPENDIX A - SPECIFICATIONS Power HDSL2 Span Voltage 0 or -180 ±5 Vdc CO Supply -48 Vdc nominal (-42.5 Vdc to -56.5 Vdc) See “Power Consumption” and “Maximum Power Dissipation” and “Maximum Current Drain” on page 66. Electrical Protection Secondary surge and power cross protection on HDSL2 ports. Requires external primary protection.
Appendix A - Specifications LTPH-UM-1049-02, Issue 2 POWER CONSUMPTION 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 circuits on 9 kft, 26 AWG loops without a regenerator. Table 26. H2TU-C-319 List 4E Power Parameters -48 Vdc Power Consumption (Watts) Heat Dissipation (Watts) -42.5 Vdc Current (mA) Maximum Maximum Maximum 12.25 7.25 292.0 8.7 6.75 207.
LTPH-UM-1049-02, Issue 2 Appendix A - Specifications LOOP ATTENUATION, INSERTION LOSS, AND REACH Each loop has no more than 35 dB of 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. HDSL2 Reach Chart Cable Gauge Insertion Loss (a) at 196 kHz (dB/kft) Loop Attenuation (dB/kft) Maximum Reach (kft) Ω per kft 26/0.4 mm 3.88 3.1 9 83 24/0.51 mm 2.84 2.2 12 52 22/0.61 mm 2.18 1.
Appendix A - Specifications LTPH-UM-1049-02, Issue 2 H2TU-C-319 LIST 4E CARD-EDGE CONNECTOR Figure 33 shows the pin assignments of the card-edge connector on the H2TU-C-319 List 4E card. The function of its segments (S1, S2, and S3) are described beginning with “Test Access” on page 28. Note that only the set of Standard 3192 alphanumeric connector pins to Segment 3 (A through L and 1 through 10) are labeled on the backplane of the HMS-358 shelf.
LTPH-UM-1049-02, Issue 2 Appendix A - Specifications Figure 34 shows the generic labeling of the connector as it appears on the backplane with HMS-358 shelf. Note that the H2TU-C has no connections to Loop B of Group 1. The HMS-358 technical practice refers to Group 1 and Group 2 as Port 1 and Port 2, respectively.
Appendix A - Specifications LTPH-UM-1049-02, Issue 2 System Alarm Output Pin Pin H on the card-edge connector, shown in Figure 33, is the H2TU-C System Alarm output pin. The following notes apply to pin H: • Pin H replaces the Local Loss of Signal (LLOS) on normal high-density (3192) repeaters. • The normally floating output of pin H can connect to pin 1 of the 1184 or 3192-9F Alarm Card in position 29 of the high density (HD) shelf.
LTPH-UM-1049-02, Issue 2 Appendix A - Specifications CRAFT PORT Figure 35 shows the pinout for the craft port connector and its connection to a DB-9 or DB-25 connector on a maintenance terminal. Terminal DB-9 Connector (DTE) 2 H2TU-C-319 3 DB-9 Connector (DCE) 5 2 TD (Transmit Data) 3 RD (Receive Data) 5 Terminal GND DB-25 Connector (DTE) 2 3 7 Figure 35.
Appendix B - Functional Operation LTPH-UM-1049-02, Issue 2 APPENDIX B - FUNCTIONAL OPERATION 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 HiGain HDSL2 system. HiGain HDSL2 systems use ADC Overlapped Pulse Amplitude Modulation (PAM) Transmission with Interlocking Spectra (OPTIS) transceiver systems to establish full-duplex, 1.552 kbps data channels between the H2TU-C and a remotely located H2TU-R.
LTPH-UM-1049-02, Issue 2 Appendix B - Functional Operation TIMING The low loop wander (0.3 UI max) of an H2TU-C, when used with compatible regenerators and remote units, allows the circuit to be used in all critical timing applications, including those that are used to transport Stratum 1 timing. GROUND FAULT DETECT The H2TU-C has a Ground Fault Detect (GFD) circuit which detects a ground or a resistive path to ground on any wire of the HDSL2 loop.
Appendix C - Compatibility LTPH-UM-1049-02, Issue 2 APPENDIX C - COMPATIBILITY The HiGain HDSL2 system uses HDSL2 transmission technology as recommended by ANSI committee in compliance with the August 1999 T1-E1.4/99-006R5 HDSL2 standards. The H2TU-C are designed to mount in the following shelves with 3192 mechanics: • ADC HMS-317 (28-slot, 23-inch shelf) • ADC HHS-319 (3-slot, 19-inch horizontal shelf) • ADC HMS-308 (8-slot remote enclosure) • Charles Ind.
LTPH-UM-1049-02, Issue 2 Appendix D - Product Support APPENDIX D - PRODUCT SUPPORT ADC Customer Service Group provides expert pre-sales and post-sales support and training for all its products. TECHNICAL SUPPORT Technical support is available 24 hours a day, 7 days a week by contacting the ADC Technical Assistance Center (TAC) at one of the following numbers: • Telephone: 800.638.0031 714.730.3222 The 800 line is toll-free in the USA and Canada. • Fax: 714.730.2400 • Email: wsd_support@adc.
Appendix E - Abbreviations LTPH-UM-1049-02, Issue 2 APPENDIX E - ABBREVIATIONS ES-P: Errored Seconds-Path A ACO: Alarm Cutoff EXZ: for AMI ACON: Auto Conversion of DS1 frame ACQ: Acquisition ADSI: Active DSX-1 AIS: Alarm Indication Signal ALRM: Alarm Condition AMI: Alternate Mark Inversion AUX: Auxiliary AWG: American Wire Gauge B Bit Error Rate BPVT: Bipolar Violation Transparency BRG: F FCON: Framed Conversion of DS1 frame FERR: Framing Bit Error FLDL: Flash Download G GFD: Ground Faul
LTPH-UM-1049-02, Issue 2 Appendix E - Abbreviations MTAE: Metallic Test Access Equipment TUC: Transmission Unit Central Office MTAF: Metallic Test Access Facilities TUR: Transmission Unit Remote End MUX: Multiplexer U N UAS: NLOC: Network Local Loopback UNFR: Unframed NMA: Network Management and Administration UUT: Unavailable Errored Seconds Unit Under Test NPRM: Network PRM NREM: Network Remote Loopback O OPTIS: Overlapped PAM Transmission with Interlocking Spectra P PAM: Pulse Amplitu
Appendix E - Abbreviations 78 LTPH-UM-1049-02, Issue 2 January 9, 2002 H2TU-C-319 List 4E
CERTIFICATION AND WARRANTY FCC CLASS A COMPLIANCE This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
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: 714.730.3222 Fax: 714.730.2400 ISO 9001/TL 9000 DOCUMENT: LTPH-UM-1049-02, ISSUE 2 ´,-Q¶6o¨ DNV Certification, Inc.
