ADTRAN HDSL2 инструкция обслуживания

HDSL2 for General Distribution Inst allation and Maintenance Practice Document Numbe r: 61223HDSL2L2-5B June 2005 Part Number Descripti on CLEI 1181113L2 Total Access 300 0 H2TU-C T1L71YLA_ _ 1223001L2 220/E220 HD SL2 H2TU-C T1L722MA_ _ 1223003L2 DDM+ HDSL2 H2TU-C T1L734NA_ _ 1223004L2 3192 HDSL2 H2T U-C T1L746PA_ _ 1223004L12 3192M HDSL2 H2TU-C T1[...]

HDSL2 for General Distribution Installation and Maintenance Practice ii 61223HDSL2L2-5B Front Matter T rademar ks Any brand names and product names includ ed in this manual are trademarks, registered trademarks, or trade names of their respectiv e holders. HiGain ® is a registered trademark of ADC Telecommunications, Inc. T o the Holder of the Man[...]

HDSL2 for General Distribution Installatio n and Maintenance Practice 61223HDSL2L2-5 B iii R e vision Histor y Con v entions The following typographical conventi ons are used in this document: This font indicates a cross-reference link. First-ti me references to tables and figures are shown in this font . This font indicates screen menus, fields, a[...]

HDSL2 for General Distribution Installation and Maintenance Practice iv 61223HDSL2L2-5B T r aining ADTRAN offers training courses on ou r produc ts. These courses includ e overviews on product features and functions while covering applicat ions of ADTRAN’s prod uct lines. ADTRAN provides a variety of training options, includin g customized traini[...]

61223HDSL2L2-5 B v Contents Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Illustrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

Contents HDSL2 for General Distribution Installation and Mainten ance Practice vi 61223HDSL2L2-5B Scratch Pad, Circuit ID, Time/ Date Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Terminal Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

HDSL2 for General Distribution Insta llatio n and Maintenance Practice Contents 61223HDSL2L2-5 B vii Fast Retrain Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-10 Appendix C Front Panel DSX and MUX Mode Test Access . . . . . . . . . . . . . . . . . . . . . . . .[...]

Contents HDSL2 for General Distribution Installation and Mainten ance Practice viii 61223HDSL2L2-5B Figure 20. Span Status Screen, Total Access 3000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 21. Status Screen Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

HDSL2 for General Distribution Insta llatio n and Maintenance Practice Contents 61223HDSL2L2-5 B ix T a bles Table 1. HDSL2 Central Office Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 2. HDSL2 Remote Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

Contents HDSL2 for General Distribution Installation and Mainten ance Practice x 61223HDSL2L2-5B[...]

61223HDSL2L2-5 B 1 HDSL2 f or Gener al Distribution PR ODUCT DESCRIPTION The HDSL2 modules referenced in this document are used to deploy a T1 circuit using 2-wire metallic facilities. HDSL2 provides extended range to DS1/T1 transpor t while pr oviding spectral compatibility with ADSL and other transport te chnologies . The ADTRAN HDSL2 Transceiver[...]

Product Description HDSL2 for General Distribution Installation and Maintenance Practice 2 61223HDSL2L2-5B Illustrations Figure 1 illustrates the front panels of the ADTR AN H2TU-C modules approved for general distribution. Figure 1. ADTRAN HDSL2 Central Of fice Units for General Distribution 220 H2TU-C P/N 1223001L2 DDM+ H2TU-C P/N 1223003L2 3192 [...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Product Descripti on 61223HDSL2L2-5 B 3 Figure 2 illustrates the front panels of the ADTR AN H2TU-R modules approved for general distribution. Figure 2. ADTRAN HDSL2 Remote Units for General Distribution The H2TU-R is a T200 mechanics card which will fit T ype 200 or T ype 400 m[...]

Product Description HDSL2 for General Distribution Installation and Maintenance Practice 4 61223HDSL2L2-5B Compliance ADTRAN HDSL2 modules are NRTL listed to the applicable UL standards. The HDSL2 modules are to be installed in a restricted access location and in a type “B” or “E” enc losure only. These devices comply with Part 15 of the FC[...]

HDSL2 for General Distribution Insta llatio n and Maintenance Practice Installation Guidelines 61223HDSL2L2-5 B 5 INSTALLA TION GUIDELINES After unpacking an HDS L2 module, insp ect it for damage. If damage has occurred, file a claim with the carrier, then contact ADTRAN Custom er Service. For more information, refer to “Appendix D, Warranty ” [...]

Installation Guidelines HDSL2 for General Distribution Instal lation and Maintenance Practice 6 61223HDSL2L2-5B P o wering Options H2TU-C A n H 2 T U - C m o d u l e i s c a p a b l e o f s p a n p o w e r i n g a n H 2 T U - R m o d u l e b y a p p l y i n g c u r r e n t t o t h e local loop. Current from 10 to 150 mA is coupled ont o an HDSL2 sp[...]

HDSL2 for General Distribution Insta llatio n and Maintenance Practice Installation Guidelines 61223HDSL2L2-5 B 7 4. Slide the unit into the module slot. Simultaneous thumb pressure at the top and bottom of the unit will ensure that the module is firmly seated against the backplane of the chassi s. 5. Secure the module in place by pushing in on the[...]

Connections HDSL2 for General Distribution Installation and Maintenance Practice 8 61223HDSL2L2-5B CONNECTIONS An H2TU-C module occupies one card slot in the respective Office Repeater Bay for which it is named. Power and alarm signals are provided to t he module through the backplane of t he shelf. DSX-1 and HDSL2 loop signals are conn ected to th[...]

HDSL2 for General Distribution Insta llatio n and Maintenance Practice Connections 61223HDSL2L2-5 B 9 Figure 5. HDSL2 Edge Connector Wiring, continued 3192 Edge Connector Wiring 1 2 3 4 5 6 7 8 9 10 A B C D E F H J K L R1 Rx DSX (Out to DSX) R Tx DSX (In from DSX) GND -48 VDC R HDSL2 Loop Fuse Alarm (to Alarm Module) T Tx DSX (In from DSX) T1 Rx DS[...]

Provisioning HDSL2 for General Distribution Installation and Maintenance Practice 10 61223HDSL2L2-5B T otal Access 3000 H2 TU-C Edge Connector The Total Access 3000 shelf delivers DSX-1 from th e network to the H2TU-C via connectors on the backplane labeled Pair 7 and Pair 8 . The HDSL2 signal is provid ed toward the customer via the backplane conn[...]

HDSL2 for General Distribution Installatio n and Maintenance Practice Provisioning 61223HDSL2L2-5 B 11 T able 6. Pr o visioning Options Provisioning Option Option Sett ings Default Settings 1. DSX-1 Line Build Out 1 0-133 feet, 133-266 feet, 266-399 feet, 399-533 feet, 533-655 feet, EXTERNAL 0 to 133 feet 2. DSX-1/DS1 Line Code B8ZS, AMI B8ZS 3. DS[...]

HDSL2 System Testing HDSL2 for General Distrib ution Installation and Mainten ance Practice 12 61223HDSL2L2-5B Pr ov isioning Options, T otal Access 3000 H2TU-C The Total Access 3000 H2TU-C is provisione d through the SCU on the Total Access 3000 chassis. In addition to the options shown in Table 6 on page 11, the options shown in Table 7 apply. HD[...]

HDSL2 for General Distribution Installatio n and Maintenance Practice HDSL2 System Testing 61223HDSL2L2-5 B 13 H2TU-C Bantam Ja cks The front panel of an H2 TU-C module contains bo th metallic splitting ( EQ ) and monitor ( MON ) bantam jacks. The EQ jacks provide an intrusive access point, interrupting signal access to the local loop. This will en[...]

HDSL2 System Testing HDSL2 for General Distrib ution Installation and Mainten ance Practice 14 61223HDSL2L2-5B Figure 7. Bantam Jack Arrangements Loopbac ks The ADTRAN HDSL2 modules respond to three di fferent loopback activation processes. These processes may be utilized to provide a loopback that affects either an H2TU-C or an H2TU-R module (loca[...]

HDSL2 for General Distribution Installatio n and Maintenance Practice HDSL2 System Testing 61223HDSL2L2-5 B 15 In addition to network-si de loopbacks, an H2 TU-C module provid es customer-side loo pbacks initiated by using either the terminal control port or in-band l oop codes. For more infor- mation, refer to “Appendix A, HDSL2 Loopbacks” . I[...]

H2TU-C Front Panel Operati on HDSL2 for General Distribution Installation and Mainten ance Practice 16 61223HDSL2L2-5B H2TU-C F R ONT PANEL OPERATION LED indicators mou nted on the front pane l of th e unit provide status of the HDSL2 circuit. Each indicator is described in Tabl e 9 for the H2TU-C and Table 10 for the H2TU-R . T able 9. H2TU-C Fron[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 17 CONTROL POR T OPERATION The H2TU-C modules pr ovide a DB-9 connector o n the front pan el that supplies an RS-232 interface for connection to a controlling terminal . The pinout of the DB-9 is illustrated in Figure 9 . Figure 9. RS-232 [...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 18 61223HDSL2L2-5B Scr eens The screens illustrated in Figure 10 through Figure 47 are for an HDSL2 circuit deployed with the ADTRAN HDSL2 technology. The circuit in cludes an H2TU-C module and an H2TU-R module. Logon to Main Menu A terminal session is init[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 19 Descripti ons for th e menu item s on the HDSL2 Main Menu include the following: • “HDSL2 Unit Information” on page 21 • “Provisioning” on page 22 • “Span Status” on page 2 4 • “Loopbacks and Test” on page 27 •[...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 20 61223HDSL2L2-5B Figure 12. Total Access Main Menu The Access Module Menus screen ( Figure 13 ) will display the access modules occupying the Total Access 3000 shelf. Select the correspondi ng channel slot number for the desired H2TU-C. To the right of ea[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 21 Figure 14. Total Access 3000 H2TU-C Main Menu Screen HDSL2 Unit Infor mation The Unit Information screen ( Figure 15 ) provides detailed produc t information on each component in the HDSL2 circuit. ADTRAN T echnica l Support contac t nu[...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 22 61223HDSL2L2-5B Provisioning The Provisioning menu ( Figure 16 ) displays current settings. To change a particular option setting (for example, “1” fo r DSX-1 Line Build Out) select the appropriate number, press E NTER , and the new menu will appear [...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 23 To re-deploy this unit, press D which restores the factory default settings to those shown in Table 6 and Table 7 . The options shown in these tables ar e available with the H2TU-R (P/N 1223026L2). Som e settings may d iffer when using [...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 24 61223HDSL2L2-5B Span Status The Span Status Scre en ( Figure 19 ) provides quick access to st atus information for each HDSL2 receiver in the circuit. Figure 19. Span Status Screen The Total Access 3000 Sp an Status Screen ( Figure 20 ) includes an optio[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 25 Status Screen Le gend Screen The Status Screen Legend ( Figure 21 ) provides a description of me ssages used on the Status screens. Figure 21. Status Screen Legend Detailed Status Screen The Detailed Status selection from the Span Statu[...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 26 61223HDSL2L2-5B T otal Access 3000 H2TU-C A uto In Ser vice Status Screen The Auto In Service Status Scr een ( Figure 23 ) provides the status of the Auto In Service feature. The T1 alarm indications will display if the Exte rnal Alarms option is enabled[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 27 Loopbacks and T est The Loopback and Test Commands screen ( Figure 24 ) provides the user with the ability to initiate or terminate all avai lable HDSL2 loopbacks. Each HDSL2 circuit component can be looped toward the network or custome[...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 28 61223HDSL2L2-5B Figure 25. Total Access 3000 H2TU-C Loopback and Te st Commands Screen BER T T est Functions The Bit Error Rate Testing (BERT) Tes t Screen ( Figure 26 ) is accessed by selecting the associated number on the Loopback and T est menu . A fi[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 29 Figure 26. BERT Test Screen NO TE When the BERT is started, the H2 TU-R will automatically be put in loopback and the default test leng th of 2 hours will be initiated. Selecting option 3, Select Data P attern from th e BERT Test Screen[...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 30 61223HDSL2L2-5B Option 4, Enter Test Timeout from t he BERT Test Screen displays the Timeout Screen ( Figure 28 ). The time out can run for a specific duration by entering the hours an d/or mi nutes, or c an run indefinitely by entering 00:00, as ind ica[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 31 P erfor manc e Histor y The Performance History screens ( Figure 30 ) display the historical HDSL2 and T1 perfor- mance data in several different registers. At each 15-minute interval, the performance infor- mation is transferred to the[...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 32 61223HDSL2L2-5B Figure 31. Performance Data Definitions, Loop Figure 32. Performance Data Definitions, Path Circuit ID:HNTS VLALHDSL2 03/01/05 09: 29:45 Press ESC to return to previous menu Pe rformance Data De finitions H2TUC, H2TUR, a nd H2R LOOP R ela[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 33 Scratch P ad, Cir cuit ID, Time/Date Screen The Scratch Pad, Cir cuit ID, Time/Date screen ( Fig ure 33 ) provides a logging medium fo r circuit information. The format for th e items on this scr een are as follows: • The scratch pad [...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 34 61223HDSL2L2-5B T er minal Modes The module used in this example incl udes two ter minal emulation modes. • Manual Update Mode - This mode is used to manually update the screens. This mode supports efficient pr int screen and log file utilities fo r st[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 35 Alar m Histor y The Alarm History screens are divide d into three separate screens: • “T1 Alarm History” on page 35 • “HDSL2 Span History” on page 36 • “HDSL2 Facility Alarm History” on page 37 T1 Alar m Histor y The T[...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 36 61223HDSL2L2-5B HDSL2 Span Histor y The HDSL2 Span History screen ( Figure 36 ) displays th e following information: • Loss of Sync for each HDSL2 receiver • Margin Threshold Alarm for each HDSL2 rece iver • Attenuation Thr eshold Al arm for each H[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 37 HDSL2 Facility Alar m Histor y The HDSL2 Facility Alarm History screen ( Figure 37 ) displays the following information: •D C O p e n • Over-curr ent (short) • Ground fa ult • Power cycle Figure 37. HDSL2 Facility Alarm History [...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 38 61223HDSL2L2-5B Ev ent Histor y The Event History screen ( Figure 38 ) provides a log history of HDSL2 circuit events. The following is a list (but not all- inclusive) of possible events: Figure 38. Event History Screen •C i r c u i t I D C h a n g e ?[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 39 System PM/Scre en Repor t The System PM/Screen Report option ( Figure 39 ) offers four types of reports on performance monitoring. Selecting a report ty pe will display all the reports for that category on the screen at once, which is m[...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 40 61223HDSL2L2-5B T r oubleshooting The Troubleshooting screens include the new feat ure “Splice Detection.” This and other new features are described in more detail in “Appendix B, HDSL2 Featu res” . The Troubleshooting screen ( Figure 41 ) provid[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 41 T r oubleshooting Guidance Selecting the option number associated with the Troubleshooting Guidance selection on the Troubleshooting screen causes an H2TU-C module to read the oper ational status of the circuit and return troubles hooti[...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 42 61223HDSL2L2-5B General Infor mation The General Information screen ( Figure 43 ), from the main Troubleshooting screen, provides a summary of the deployment guidelines n ecessary to provision this HDSL2 circuit. Figure 43. General Information Screen Cir[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 43 Chronic Cir cuit Guidance Selecting the Chronic Circuit Guidance option displays the Chronic Circuit Problems screen ( Figure 44 ). General information about circuits with bad splices is provided as well as a menu to the Bad Splice Dete[...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 44 61223HDSL2L2-5B The ( B ) Back command will allow the technician to sc roll back through the last 14 days Splice Detection Results. Figure 45. View Splice Results Screen Splice Histogr am The Splice Histogram Screen ( Figure 46 ) displays the counters th[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 45 Figure 46. Histogram Screen R eset Splice Detector Choosing Reset Splice Detector will prompt to make sure a reset is desired. If Y (yes) is chosen the splice detector will re-ini tialize and start running again. Circuit ID: 11/05/04 09[...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 46 61223HDSL2L2-5B Vir tual T er minal Control The Virtual Terminal Control screen ( Figure 47 ) is availabl e on all modules except the Total Access 3000 H2TU-C. It allows co ntrol of remote unit prov isio ning from an H2TU-C module. Select the Log into H2[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 47 T otal Access 30 00 H2TU-C Flash Upg r ade Ability to download new firmware for the unit is available via the Total Access H2TU-C Flash Image screen ( Figure 48 ). This feature allows the download and installation of a firmware upgrade.[...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 48 61223HDSL2L2-5B Figure 49. Download H2TU-C via Y-Modem Menu Figure 50 illustrates a Flash upgr ade session in progress. Figure 50. Flash Upgrade, Y-Modem in Progress Shelf: 1 Slot: 14 Total Access Syst em 03/01/05 10 :59 Unacknowledged A larms: INFO Circ[...]

HDSL2 for General Di stribution Installatio n and Maintenance Practice Control Port Operation 61223HDSL2L2-5 B 49 The Download H2TUC via TFTP menu ( Figure 51 ) is utilized to perform a TFTP file transfer from a remotely located computer/server to the H2TU-C. During TFTP transfers, the SCU continues to act as an intermediary to rec eive the file da[...]

Control Port Operation HDSL2 for General Distrib ution Installation and Maintenance Practice 50 61223HDSL2L2-5B Boot Block The Boot Block Status screen ( Figure 52 ) provides the status of the Boot Block sector, which in rare cases can becom e locked. If locked, the bootcode cannot be upgraded by future firmware upgrades. The bootcode is sel dom ch[...]

HDSL2 for General Distribution Insta llatio n and Maintenance Practice HDSL2 Deployment Gui delines 61223HDSL2L2-5 B 51 HDSL2 DEPLO YMENT GUIDELINES The ADTRAN HDSL2 system is designed to prov ide DS1 based services over loops designed to comply with carrier service ar ea (CSA) guidelines. CSA deploy ment guidelines a re given below: • All loops [...]

Maintenance HDSL2 for General Distribution Installation and Maintenance Practice 52 61223HDSL2L2-5B Loop loss per kilofoot for standa rd wire gaug es is summarized in Table 12 . An approximation for the maximu m amount of wid eband noi se as measured using an F filter on an HDSL2 loop having 35 dB loss is < –47 dBrnF. An approximation for the [...]

HDSL2 for General Distribution Insta llatio n and Maintenance Practice Troubleshooting 61223HDSL2L2-5 B 53 T R OUBLESHOOTING Table 13 provides a H2 TU-C troubleshooting guide t o assist in problem reso lution. T able 13. H2TU-C T roubleshooting Gu idelines Condition Solution All front panel indicators are off . 1. Verify that –48 VDC power is pro[...]

Troubleshooting HDSL2 for General Distributio n Installation and Maintenance Practice 54 61223HDSL2L2-5B Table 14 provides an H2 TU-R troubleshoo ting guide to assist in p roblem resolution. T able 14. H2TU-R T roubleshooting Gu idelines Condition Solution All front panel indicators are off. 1. Make sure the H2TU-R is properly seated in the housing[...]

HDSL2 for General Distribution Installatio n and Maintenance Practice Specifications 61223HDSL2L2-5 B 55 SPECIFICA TIONS Table 15 lists the product specifications for ea ch H2TU-C included in this practice. T able 15. H2TU-C Pr oduct Specifications Specif ication Descrip tion Loop Interface Modulation Type: Mode: Number of Pairs: Bit Rate: Baud Rat[...]

Specifications HDSL2 for General Distributio n Installation and Mainten ance Practice 56 61223HDSL2L2-5B Tests Diagnostics: Self-Test Local Loopba ck (H2TU-C) Remote Loopback (H2TU-R) Physical Dimensions: Total Access 3000 H2TU-C 220 H2TU-C: DDM+ H2TU -C: 3192 H2TU-C: Weight: 5.35 in. high × 0.69 in. wide × 10.2 in. deep 6.00 in. high × 1.40 in.[...]

HDSL2 for General Distribution Installatio n and Maintenance Practice Specifications 61223HDSL2L2-5 B 57 Table 16 lists the product specifications for each H2TU-R included in this practice. T able 16. H2 TU-R Product Spec ifications Specification Descript ion Loop Inte rface Modulation Type: Mode: Number of P airs: Bit Rate: Baud Rate: Service Rang[...]

Specifications HDSL2 for General Distributio n Installation and Mainten ance Practice 58 61223HDSL2L2-5B Tests Diagnostics: Self Test Loopback (H2TU-R) initia ted with T1 NIU in- band codes Loopback (H2TU-R) init iated with H2TU-C command Loopback (H2TU-R) initiated manually Loopback (H2TU-R) initia ted from H2TU-R con- trol port Physical Dimension[...]

61223HDSL2L2-5 B A-1 A ppendix A HDSL2 Loopbac ks HDSL2 LOOPBAC K AND CONTRO L CODES This appendix describes the operation of the HDSL2 system in detection of inband and ESF facility data link loopback codes. Upon deactivation of a loopback, the HD SL2 system will synchronize automatically. Loopbac k Process Description In general, the loopback pro[...]

HDSL2 Loopback and Control Codes HDSL2 for General Distribution Installation and Maintenance Practice A-2 61223HDSL2L2-5B NO TE In all control code sequences presented, the inband codes are shown leftmost bit transmitted first, and the ESF data link codes with rightmost b it transmit ted first. T able A-1. HDSL 2 Loopback Control Codes Ty p e Sourc[...]

HDSL2 for General Distribution Insta llatio n and Maintenance Practice HDSL2 Loopback and Control Codes 61223HDSL2L2-5 B A-3 T able A-2 . In-Band Addr essa ble Loopback Codes (All codes listed below must be sent for a minimu m of 5 seconds in order for them to be d etected and acted upon.) Function Code Source Cod e and Response Arm 11000 (2-in-5 p[...]

HDSL2 Loopback and Control Codes HDSL2 for General Distribution Installation and Maintenance Practice A-4 61223HDSL2L2-5B Loopback Query D5D5 (1101 0101 1101 0 101) (N) If unit is in loopback to wards pa ttern, errors are periodically injected toward pattern as long as pat- tern is present. H2TU-C 231 Errors every 20 seconds HRE 10 Er rors every 20[...]

61223HDSL2L2-5 B B-1 A ppendix B HDSL2 F ea tur es HDSL NEW ENHANCED F EATURE OVER VIEW The new HDSL2 and HDSL4 products contain new features to enhance their performance and help the customer reduce down time. The following features are described in this appendix: • “TScan” on page 1 • “Splice Detection Feature” on page 2 • “Fault [...]

HDSL New Enhanced Feature Overview HDSL2 for General Distribution In stallation and Maintenance Practice B-2 61223HDSL2L2-5B Figure B-1. TScan Diagnostic Capabilities NO TE For implementation of TScan please contact an ADTRAN sales representative. Splice Detection F eature Runtime TScan 2.0 TM splice detection feature is an ADTRAN proprietary non-i[...]

HDSL2 for General Distribution Insta llatio n and Ma intenance Practice HDSL New Enhanced Feature Overview 61223HDSL2L2-5 B B-3 The support mechani sms for this feature can l ogically be divided into the following six segments: These support mechanisms are described in the following subsections. Splice Detection Algorithm The splice detection algor[...]

HDSL New Enhanced Feature Overview HDSL2 for General Distribution In stallation and Maintenance Practice B-4 61223HDSL2L2-5B EEPROM Suppor t The results of the splice detector are stored to the Elec tronically Erasable Programmable Read-Only Memory (EEPROM) on a daily basis at the same time the 24-hour PM registers are stored to EEPROM. A total of [...]

HDSL2 for General Distribution Insta llatio n and Ma intenance Practice HDSL New Enhanced Feature Overview 61223HDSL2L2-5 B B-5 Splices that are varying in impedance will caus e the HDSL data pump to see a reduced and/or fluctuating signal quality (margin). The HDSL da ta pump will attempt to track these chang es, but when the changes become too se[...]

HDSL New Enhanced Feature Overview HDSL2 for General Distribution In stallation and Maintenance Practice B-6 61223HDSL2L2-5B Figure B-3. Splice Results Scre en View Splice Histo gram Screen The View Splice Histogram Screen ( Figure B-4 ) displays the coun ters that the splice detector uses to make its result decision. For HDSL2, it displays six co [...]

HDSL2 for General Distribution Insta llatio n and Ma intenance Practice HDSL New Enhanced Feature Overview 61223HDSL2L2-5 B B-7 Figure B-4. Splice Histogram Screen Compatibility The H2TU-C and H2TU-R bo th run local detect ors ; therefore, a splice-detection capable H2TU-C will be able to detect bad splices up to slightly more than half the circuit[...]

HDSL New Enhanced Feature Overview HDSL2 for General Distribution In stallation and Maintenance Practice B-8 61223HDSL2L2-5B Using the Bad Splice Detector A brief synopsis of steps that might be utilize d on a trouble analysis are as follows: 1. Check the HDSL units for margin fluctuatio n by checking the Min & Max margins on the Detailed Span [...]

HDSL2 for General Distribution Insta llatio n and Ma intenance Practice HDSL New Enhanced Feature Overview 61223HDSL2L2-5 B B-9 Ev e nt Histor y Screen The Event History screen ( Figure B-5 ) shows the messages reported in the event log due to the splice detector. Any reset of the de tector is shown as well as the first detect seen since the last r[...]

HDSL New Enhanced Feature Overview HDSL2 for General Distribution In stallation and Maintenance Practice B-10 61223HDSL2L2-5B power. When th e software detects the power fault, the data pump goes into a fault br idging mode to protect the data pump fil ters and to maintain service until the anomaly clears. The software also implements the s ame fau[...]

61223HDSL2L2-5 B C-1 A ppendix C F r ont P anel DSX and MUX Mode T est Access GENER AL Figure C-1 through Figure C-3 are DSX-1 fed modes of operation, and Figure C-4 through Figure C-7 are MUX fed mo des of operation. From th e Provisioning menu ( “Provisioning” on page 22), the Network Source opti on is used to choose either MUX fed or DSX fed[...]

DSX Mode Test Access HDSL2 for General Distribution Installation and Maintenance Practice C-2 61223HDSL2L2-5B Figure C-1. DSX MON, Tx to Customer DSX MON, Rx fr om Customer The Rx of the BERT receives data from the RX MON jack ( Figure C-2 ). This data has a monitor jack impedance of 432 ohms and comes fr om the customer originated data. The BERT T[...]

HDSL2 for General Di stribution Installatio n and Mainte nance Practice MUX Mode Test Access 61223HDSL2L2-5 B C-3 Figure C-3. DSX EQ, Tx to Customer, Rx from Customer MUX MODE T EST ACCESS MUX Mode tests through a MUX on the Total Access 3000 shelf. MUX MON, Tx to Customer The Rx of the BERT receives data from the TX MON EQ jack ( Figure C -4 ). Th[...]

MUX Mode Test Access HDSL2 for General Distribution Installation and Maintenance Practice C-4 61223HDSL2L2-5B MUX MON, Rx from Customer The Rx of the BERT receives data from the RX MON jack ( Figure C-5 ). This data is 432 ohm copy of the data that the H2TU-C will re ceive from the customer and route to the Total Access shelf's MUX (network). [...]

HDSL2 for General Di stribution Installatio n and Mainte nance Practice MUX Mode Test Access 61223HDSL2L2-5 B C-5 MUX EQ , Tx to Customer , Rx fr om Customer The Tx of the BERT is connected to the EQ TX jack, and the Rx of the BERT is connected to the RX EQ jack ( Figure C-7 ). The Tx of the BERT is then substituted for the dat a that the H2TU-C se[...]

MUX Mode Test Access HDSL2 for General Distribution Installation and Maintenance Practice C-6 61223HDSL2L2-5B This page is intentionally blank.[...]

61223HDSL2L2-5 B D-1 A ppendix D W ar r anty W AR RANTY AND CUSTOMER SER VICE ADTRAN will replace or repair this product within the warranty period if it do es not meet its published specifications or fails while in se rvice. Warr anty information can be found at www.adtran.com/warranty . Refer to the following subsections for sales, support, Custo[...]

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