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Section 61223424L2-5A
Issue 1, December 2003
CLEI Code: T1L497PC_ _
HDSL4 T200 H4TU-R
Installation and Maintenance Practice
CONTENTS
1. General...................................................................................... 1
2. Installation ................................................................................ 2
1223424L2
3. Connections .............................................................................. 5
LOCAL
4. HDSL4 System Testing .................................
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Description Compliance The T200 H4TU-R can be deployed in circuits using Table 3 shows the compliance codes for the T200 one H4TU-C, one H4TU-R, and up to two H4Rs. H4TU-R. This product is intended for installation in equipment with a Type “B” or “E” enclosure. The T200 H4TU-R terminates local loop HDSL4 signals originating from the Central Office (CO) unit This product meets all requirements of Bellcore GR- and transforms the HDSL4 signal into traditional DS1 1089-CORE (Class A2), ANSI T1.41
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Front Panel LED Indicators There are seven front panel mounted status LED indicators. Each indicator is described in Table 4. Table 4. Front Panel LED Indicators Front Panel Name Indication Description DSL 1 Green DSL Loop 1 sync, no errors currently detected, and signal margin ≥3dB 1223424L2 LOCAL Red No DSL Loop 1 sync, errors being detected, or signal margin <3dB DSL 1 DSL 2 Green DSL Loop 2 sync, no errors currently detected, and signal margin ≥3dB DSL 2 DS1 Red No DSL Loop 2 sync, errors
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Remote Provisioning The provisioning settings can be viewed and manipu- There are no configuration switches for the T200 lated through management access via the front panel H4TU-R. Configuration is performed via software RS-232 port. Table 5 lists the available provisioning discussed in the Control Port Operation section of this options and their factory default settings. practice. Table 5. Provisioning Options Provisioning Option Option Settings Default Settings 1. DSX-1 Line Build Out 0-133
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3. CONNECTIONS 4. HDSL4 SYSTEM TESTING All connections of the T200 H4TU-R are made through The T200 H4TU-R provides diagnostic, loopback, and card edge connectors. Figure 2 gives the card edge pin signal monitoring capabilities. assignments for the T200 H4TU-R circuit pack. The seven front panel LEDs provide diagnostics for HDSL4 loops, DS1 signals, alarms, provisioning, and loopbacks. Refer to the Installation section for details. Chassis Ground 1 2 The H4TU-R provides a bidirectional loopba
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H4TU-R Network Loopbacks The H4TU-R responds to multiple loopback activation The loopback position is a logic loopback located processes: within the H4TU-R internal HDSL4 transceiver. See • First, manual loopback on the H4TU-R and/or the Figure 4. H4TU-C unit may be controlled from the front panel. Refer to the Front Panel Operation section of this practice for more detail. H4TU-C Network-Side Loopback • Second, loopback activation may be accomplished AIS LOCAL using the control port of th
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5. FRONT PANEL OPERATION The front panel contains two pushbuttons. These are NOTE labeled LOC and REM. If a personal computer with terminal emulation capability is being used, be sure to disable any The LOC pushbutton controls a bidirectional loopback power-saving programs. Otherwise, communi- at the H4TU-R. Pressing the button causes a bidirec- cation between the PC and the HDSL4 unit tional loopback to occur. If the bidirectional loopback is may be disrupted, resulting in misplaced active,
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This ADTRAN HDSL4 Main Menu provides access to The HDSL4 Unit Information Screen (Figure 7) detailed performance and configuration information. provides detailed product information on each The OAM&P (Operation, Administration, Mainte- component in the HDSL4 circuit. This screen also nance, and Provisioning) screens are available as listed displays contact information for ADTRAN Technical on the Main Menu (Figure 6). To access a particular Support, Internet site, and address. menu item, pre
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The Provisioning menu (Figure 8) displays current The options shown in Table 5 are available with the provisioning settings for the HDSL4 circuit. Options T200 H4TU-R (P/N 1223426L2). Some settings may that can be changed from this screen are labeled with a differ when using different H4TU-Rs. number (for example, “1” for DSX-1 Line Build Out). The Span Status Screen (Figure 9) provides quick To change a particular option setting, select the appro- access to status information for each HDSL4
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The Detailed Status Screen from the Span Status menu Each HDSL4 circuit component can be looped toward (Figure 10), displays the HDSL4 status for each the network or customer from this screen. Unit self tests receiver point. can also be initiated from this screen. The Loopbacks and Test Commands menu (Figure 11) provides the ability to invoke or terminate all available HDSL4 loopbacks. Circuit ID: 10/01/03 09:29:45
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The Performance History screens (Figure 12 and minute increments for the previous 24-hour period. At Figure 13) are used to select and display the historical each 24-hour interval, the performance data is trans- HDSL4 and T1 performance data in several different ferred into the 24-hour performance data registers. This registers. At each 15-minute interval, the performance unit stores up to 31 days of 24-hour interval data. Line information is transferred to the 15-minute performance Data or P
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Abbreviations used in the Performance History screens Line related definitions are shown in Figure 14 while are defined in Performance Data Definitions screens Path related definitions are provided in Figure 15. (Figure 14 and Figure 15). Circuit ID: 10/01/03 09:29:45 Performance Data Definitions H4TUC, H4TUR, and H4R LOOP Related: HDSL4 Framing ES-L Errored Seconds CRC>=1 or LOSW>=1 SES-L
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The Scratch Pad, Circuit ID, and Time/Date Screen The T1 Alarm History menu (Figure 17) and HDSL4 (Figure 16) provides a Scratch Pad for user-defined Span History menu (Figure 18) provide a detailed alarm information and can be any alphanumeric string up to history and events log for the HDSL4 and T1 spans. 50 characters in length. The Circuit ID can be any These screens include a time, date, first and last occur- alphanumeric string up to 25 characters in length. The rence, and count for eac
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The Event History screen (Figure 19) provides a log history of HDSL4 circuit events. Circuit ID: 10/01/03 09:29:45 Press ESC to return to previous menu HDSL4 Span History LOCATION ALARM FIRST LAST CURRENT COUNT ----------------------------------------------------------------------------- SPAN C-H1 L1 LOS
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The System PM/Screen Report option (Figure 20) The Clear PM and Alarm Histories screen (Figure 21) offers four types of reports on performance monitoring. initializes data from performance monitoring and alarm Selecting a report type will then display all the reports histories. Selecting this option from the Main Menu for that category on the screen at once, which is more displays the prompt, “This will clear the history data for efficient than stepping through the menus individually. all el
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Item 12 on the Main Menu displays the Troubleshooting Selecting option 1 from the Troubleshooting screen screen (Figure 22). Helpful ADTRAN contact infor- causes the H2TU-C to read the operational status of the mation along with two menu items appear on the bottom card and return Troubleshooting Guidance, or hints, as of this screen. to the probable cause of the trouble, as shown in Figure 23. Circuit ID: 10/01/03 09:29:45
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Selecting option 2 from the Troubleshooting screen The Virtual Terminal Session Screen (Figure 25) allows accesses the General Information Screen (Figure 24) control of the Remote card provisioning from the that summarizes the deployment guidelines necessary H4TU-C. Press 1 from this screen to begin a user- to provision this HDSL4 circuit. initiated session with the Remote card. When the remote session is completed, Press CTRL+X to terminate the session. Circuit ID:
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7. HDSL4 DEPLOYMENT GUIDELINES The guidelines reflected herein are for worst-case The different segments of an HDSL4 circuit are defined scenarios, that is, for loops that contain a maximum in Figure 26. amount of disturbers, noise, etc. Actual deployment guidelines may vary based on local policy. Please refer to those guidelines on an as-necessary basis to ensure optimum performance. Designing a circuit with loop attenuation greater than the recommended maximum loss may result in compro-
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8. MAINTENANCE Refer to the following subsections for sales, support, The T200 H4TU-R requires no routine maintenance for CAPS requests, or further information. normal operation. In case of equipment malfunction, ADTRAN Sales use the front panel bantam jack connectors to help Pricing/Availability: locate the source of the problem. Verification of 800-827-0807 possible trouble indications may be accomplished using the Troubleshooting Guide in Table 9. ADTRAN Technical Support ADTRAN does not
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Table 10. HDSL4 T200 H4TU-R Specifications Specification Description Loop Interface Modulation Type 16 TC PAM Mode Full Duplex, partially overlapped echo canceling Number of Pairs 2 Line Rate 1.552 Mbps Baud Rate 261.333 k baud Loop Loss Refer to the HDSL4 Deployment Guidelines section. Bridged Taps Single Taps < 2000 ft., Total Taps < 2500 ft. Performance Compliant with T1.418-2000 (HDSL4 Standard, issue 2) H4TU-C Transmit Power (Data) Level 14.1 ±0.5 dBm (0 to 400 kHz) H4TU-C Transmit Pow
