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152-388-115-03, Issue 03

Appendix B - Functional Operation

H2TU-C-388 List 1E

April 21, 2000

ROUND

AULT

ETECT

The H2TU-C-388 has a Ground Fault Detect (GFD) circuit which detects a ground or a resistive path to ground
on any wire of the HDSL2 loop. This makes the product compliant with the Class A2 requirements of GR-1089.

Summary of Contents for H2TU-C-388 HiGain

Page 1: ...HiGain HiGain USER MANUAL MODE SEL SETUP STATUS RS DCE 232 L HiGain HDSL2 H 2 T U 3 8 8 1E H2TU C 388 List 1E Line Unit Product Catalog 150 2406 15 CLEI VACH4WYC ...

Page 2: ...ion contained in this document is company private to ADC DSL Systems Inc and shall not be modified used copied reproduced or disclosed in whole or in part without the written consent of ADC Contents herein are current as of the date of publication ADC reserves the right to change the contents without prior notice In no event shall ADC be liable for any damages resulting from loss of data loss of u...

Page 3: ... 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 Check the packing list to ensure complete and accurate shipment of each listed item If the shipment is short or irregular contact ADC DSL Systems Inc as described in Appendix D Product Su...

Page 4: ...Inspecting Shipment 152 388 115 03 Issue 03 iv April 21 2000 H2TU C 388 List 1E ...

Page 5: ...fault Values 12 Displaying System Parameter Settings 12 Disabling an Alarm 12 Loopback Modes 12 Using a Maintenance Terminal 13 Connecting to a Maintenance Terminal 13 The Logon Screen 13 Provisioning Tasks 15 Setting Date and Time 15 Setting Circuit ID Numbers 16 Making Changes to the System Configuration 17 Clearing the History Alarm and Event Log Screens 28 Monitoring System Activity and Perfor...

Page 6: ...ures 52 A3LB and A4LB Test Procedures 55 Appendix A Specifications____________________________________________________________ 56 Power Consumption 57 Maximum Power Dissipation 57 Maximum Current Drain 57 H2TU C 388 Card Edge Connector 58 Network Management Control Bus 58 Fuse Alarm 58 Craft Port 59 Appendix B Functional Operation _____________________________________________________ 60 Appendix C...

Page 7: ...lts 27 11 Master Clear 28 12 Monitor Screen Active Loopback with Alarms 30 13 H2TU R DS1 31 day Performance History 33 14 H2TU R DS1 25 hour Performance History 33 15 H2TU C HDSL2 31 day Performance History 35 16 H2TU R DS1 Current Statistics 36 17 H2TU C DS1 Current Statistics 36 18 H2TU C 388 HDSL2 Current Statistics 37 19 H2TU C DS1 Alarm History Screen 38 20 H2TU R DS1 Alarm History Screen 38 ...

Page 8: ...rFrame Format 24 11 DDS NI and DS0 DP Latching Loopback Sequence 25 12 HiGain HDSL2 Loopback vs Latching Sequence 25 13 Response of H2TU C and H2TU R to LOS and AIS 26 14 Monitor Screen Descriptions 31 15 Error Acronyms Used on the DS1 Performance History Screens 34 16 Error Acronyms Used on the HDSL2 Performance History Screens 35 17 DS1 Alarm Descriptions 39 18 HDSL2 Alarm Descriptions 40 19 Eve...

Page 9: ...tning and power cross protection on HDSL2 interfaces Full duplex HDSL2 transmission on one pair at 1 552 Mbps Ultra low wander Stratum 1 compliant Grounded loop detection on High bit rate Digital Subscriber Line 2 HDSL2 Front panel provisioning features Four character status display Status LED RS 232 craft port for connection to a maintenance terminal HiGain HDSL2 maintenance screens for inventory...

Page 10: ...tioned non loaded copper pair Conventional inline T1 repeaters are no longer required Cable pair conditioning pair separation and bridged tap removal are not required Each loop has no more than 35 dB of loss at 196 kHz with driving and terminating impedances of 135 Ω In general HiGain HDSL2 systems Operate effectively in the same cable binder group with other HDSL2 lines HDSL T1 ADSL SDSL POTS Dig...

Page 11: ...152 388 115 03 Issue 03 Overview H2TU C 388 List 1E April 21 2000 3 Figure 1 HDSL2 System Model ...

Page 12: ...anel display messages refer to Table 2 on page 6 For pinout diagrams of the H2TU C card edge connector and craft port refer to Appendix A Specifications on page 56 Figure 2 H2TU C 388 List 1E Front Panel Front panel display List number RS 232 craft port Setup buttons Status LED Configuration number CLEI and ECI bar code label H 2 T U C 3 8 8 HiGain SOLITAIRE L RS 232 DCE STATUS SETUP MODE SEL Pair...

Page 13: ...or a Network Local Loopback NLOC is in effect Flashing yellow H2TU C 388 is in an Armed ARM state Craft port RS 232 Provides bidirectional communication between the unit and an external terminal to allow configuration and performance monitoring through the Maintenance Terminal screens List number Identifies the list number of the H2TU C 388 CLEI and ECI bar code label Provides the human readable C...

Page 14: ... as set by the operator PRMF Performance Report Messaging Far End H2TU R PRM FE BER threshold has been exceeded PRMN Performance Report Messaging Near End H2TU R PRM NE BER threshold has been exceeded PWR FEED GND Ground The HDSL2 loop is grounded PWR FEED OPEN Open Indicates a line power open condition PWR FEED SHORT Short Indicates a short between the Tip and Ring of the HDSL2 pair RAIS Remote A...

Page 15: ... HDSL2 signal relative to noise S N with respect to 21 5 dB Any value of 6 dB or greater is adequate for reliable system operation MNGD Managed The H2TU C 388 is under control of the HMU 319 Network management unit In this state the front panel craft port and push buttons are disabled PWR FEED OFF Power Feed Off HDSL2 span power has been turned off by setting the PWFD option to off or by using the...

Page 16: ...ransit immediately report the extent of damage to the transportation company and to ADC When installing an H2TU C in a chassis be sure to wear an antistatic wrist strap Avoid touching components on the circuit board To comply with the intrabuilding wiring requirements of GR 1089 CORE Section 4 5 9 the shields of the ABAM type cables that connect the H2TU C DSX 1 output ports to the cross connect p...

Page 17: ...t has been installed 1 Verify that the H2TU C powers up The front panel display illuminates and reports various status messages 2 Verify that the H2TU C attempts to communicate with the remote unit status LED flashes red One of the following occurs a If the remote unit is successfully identified and the HDSL2 loop synchronizes the H2TU C status LED lights a steady green The H2TU C reports normal m...

Page 18: ...provisioning tasks The maintenance screens are available when you connect a PC to the craft port After a successful installation complete the following tasks 1 Set the Date and Time as described in Setting Date and Time on page 15 2 Set the circuit IDs as described in Setting Circuit ID Numbers on page 16 3 Make changes to configuration as described in Making Changes to the System Configuration on...

Page 19: ...t The front panel display alternately shows the first system parameter and its current setting 2 Press the SEL button to step through all possible settings of the selected parameter 3 After the desired setting has been selected press the MODE button This updates the current displayed parameter to the selected setting then advances to the next configurable parameter After the last parameter has bee...

Page 20: ...ing Press the MODE button to return to the normal display mode Wait 30 seconds for the unit to return to the normal display mode Displaying System Parameter Settings To scroll through the current settings of all system parameters press the MODE button for 3 or more seconds The H2TU C displays the following parameters H2TU C 388 software version number H2TU C 388 list number Type of frame pattern r...

Page 21: ...a bits 1 stop bit Hardware flow control to OFF 6 If necessary press to refresh the HiGain HDSL2 logon screen The Logon Screen The HiGain HDSL2 maintenance terminal screens allow you to monitor provision and troubleshoot an H2TU C 388 system To select a menu from the HiGain HDSL2 logon screen shown in Figure 4 on page 14 do one of the following Press the first letter of the menu Use the arrow keys ...

Page 22: ...product information about the various devices that are in the system and lists circuit and device identifications Rlogon Rlogout Performs remote logon or logout from the H2TU C or the H2TU R The screen displays Rlogout when the H2TU C or H2TU R is remotely logged on the other unit at the end of the circuit To logout from the remote unit press Rlogout changes to Rlogon The unit is now locally logge...

Page 23: ... data during startup Setting Date and Time Figure 5 Configuration Menu Date and Time 1 Press to select the Config menu 2 Select Date and Time then press 3 Type the date in the format indicated then press 4 Type the time in the format indicated then press Typing seconds is optional Monitor Performance Event Log Config Inventory Rlogon Help Standard Options PairGain Options Date and Time Date mm dd ...

Page 24: ... all other devices listed in the system pressing after each entry Monitor Performance Event Log Config Inventory Rlogon Help Product Information Unit H2TU C H2TU R Product H2TU C 319 H2TU R 402 List 2E 4E Sw Ver 2 00 2 00 Build 00 00 Checksum 0x3FAE 0x3FAE H2 Xcvr L1 RA2 1 31 L1 RA2 1 31 Serial 01232456789 0123456789 CLEI VACHDN0CAA VARHJUUCAA Mfg Date 02 05 00 02 05 00 Circuit and Unit Identifica...

Page 25: ...d Figure 9 on page 18 show the Standard and PairGain configuration options Standard options are those that are supported by HiGain HDSL2 units when connected to units from other vendors PairGain options are an extended set of options that are only available when using HiGain units exclusively For a description of each option and a list of possible option settings refer to Table 5 on page 19 and Ta...

Page 26: ...ern NLBP AIS Press Space to cycle through settings and Enter to activate ID xxxx xxxx xxxx xxxx 04 21 00 12 30 01 H2TU C System OK Monitor Performance Event Log Config Inventory Rlogon Help Standard Options PairGain Options Line Power Feed PWRF ON Remote Provisioning RTPV ENA Bipolar Violation Transparency BPVT DIS HDSL2 BER Threshold HBER 1E 6 DS1 BER DBER DIS Special Loopback Mode SPLB A3LB Smar...

Page 27: ...unters to increment UNFR Same as the AUTO setting except unframed payloads will NOT cause the ES P and SES P counters to increment DS1 Line Coding DS1 B8ZS Places both the H2TU C and H2TU R into their B8ZS modes AUTO Places both the H2TU C and H2TU R into their AUTO framing modes AMI Places both the H2TU C and H2TU R into their AMI modes H2TU C Equalization EQL 0 Sets the Equalizer to DSX 1 for 0 ...

Page 28: ...es the HiGain HDSL2 system to respond to the inband loopback codes of the Teltrend addressable repeater A3LB Configures the HiGain HDSL2 system to respond to the inband loopback codes of the Wescom addressable repeater A4LB Configures the HiGain HDSL2 system to respond to the inband loopback codes of the Wescom Mod 1 addressable repeater SmartJack Loopback LPBK ENA Enables the HiGain HDSL2 system ...

Page 29: ...mental PRM SPRM every second if no PRM is received from the CPE within 5 seconds of a reset or if an LOS AIS OOF condition occurs Transaction Language 1 TL1 commands and response are enabled NPRM The H2TU R generates Network PRM NPRM if no PRM is present from the CPE If the CPE is sending PRMs NPRM is generated in addition to the existing PRM every second TL1 commands and response are enabled S N ...

Page 30: ...to be ESF which is 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...

Page 31: ... while forcing the ESF to the network Continuity is maintained as for ACON Table 9 below and Table 10 on page 24 list the ESF and SF frame formats respectively Table 8 Response to H2TU R DS1 Frame Conversion Options Case NET Transmit CPE Transmit ACON Option FCON Option NET CPE NET CPE NET CPE NET CPE 1 ESF SF ESF SF ESF SF ESF SF ESF SF 2 ESF ESF ESF ESF ESF ESF ESF ESF ESF ESF 3 SF ESF SF SF ESF...

Page 32: ...nal is a repetitive pattern with a period of 1 08 seconds RAI CI is formed by sequentially interleaving 0 99 seconds of the unscheduled message 00000000 11111111 right to left which represents RAI in the DL with 90 milliseconds of the message 00111110 11111111 right to left to flag the signal as RAI CI For SF the SF RAI CI signal is transmitted inband by setting each of the 24 channel time slots t...

Page 33: ...care bit The loopback is activated after the detection of Sequence 6 Upon completion of the enable sequence the Test Center continues to transmit FEV bytes in multiples of 20 until FEV confirmation bytes are returned or until approximately 2 seconds have elapsed If the confirmation bytes are not received a failed attempt is reported Anticipate the minimum number of bytes when the loopback code is ...

Page 34: ...ric loopback and vice versa All loopback commands are completely symmetric in the FT1 mode If the latching sequence shown in Table 12 on page 25 is interrupted for more than 20 minutes the detection is cleared and the H2TU C reverts back to its initial state where it searches for the initial sequence 1 After a successful latching sequence terminates in a latched loopback state this state remains u...

Page 35: ...to reset the H2TU C or press to cancel this action Figure 10 Configuration Menu Reset to Factory Defaults Resetting the H2TU C to its original factory settings may cause interruption of service C ENTER Y N Monitor Performance Event Log Config Inventory Rlogon Help Standard Options PairGain Options Date and Time Master Clear Set Factory Defaults SETTING FACTORY DEFAULTS SERVICE MAY BE INTERRUPTED A...

Page 36: ...lect the type of statistics Current Alarm History 25 Hour History 48 Hour History or 31 Day History and press after your selection Selecting 31 Day History allows you to clear the Current 25 Hour 48 Hour and 31 Day performance history screens for the selected interface Selecting Alarm History allows you to clear the alarm history screen for the selected interface For information about the DS1 and ...

Page 37: ...rformance The screens are 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 The Event Log provides a description of the 100 most recent events The Monitor and Performance screens provide important activity and performance...

Page 38: ...ck or to cancel For more information about loopbacks and troubleshooting see Testing on page 43 3 To initiate a loopdown of all active loopbacks press the to select LPDN then press When prompted with the message Are you sure Y N press to initiate the loopdown or to cancel M DS1 errors Armed mode Margin Loop attenuation Alarm type HDSL2 errors Line code and framing Active loopback System status Mon...

Page 39: ...mber of 1 second intervals that contain at least 50 CRC errors or one or more LOSW defects An LOSW defect occurs when at least three consecutive HDSL frames contain one or more frame bit errors This value is a running total of the last 24 hours HDSL2 UAS Count Unavailable Errored Seconds The number of seconds the HDSL2 loop is unavailable This occurs after 10 contiguous HDSL SES and is retired aft...

Page 40: ...orts Alarm statistics for the HDSL2 interfaces shown in Figure 19 on page 38 or DS1 interfaces shown in Figure 21 on page 40 on a continuous basis To access the Performance history screens 1 Press to select the Performance screen 2 Press the to select an interface H2TU C DS1 H2TU R DS1 H2TU C HDSL2 or H2TU R HDSL2 then press 3 Press the to select the type of statistics Current Alarm History 25 Hou...

Page 41: ... Page 1 of 3 Date ES L SES L UAS L CV L PDVS L ES P SES P UAS P PRM NE PRM FE 04 09 04 10 04 11 04 12 04 13 04 14 04 15 04 16 04 17 04 18 04 19 04 20 14 10 10 12 10 10 0 0 0 0 04 21 0 0 0 2 0 0 0 0 0 0 Press N ext Page P revious Page C l ear History Press Space to cycle through Interface H2TU R DS 1 choices and Enter to view Statistics 31 Day History ID xxxx xxxx xxxx xxxx 04 21 00 12 30 01 H2TU C...

Page 42: ...mance Report Monitoring Near End The PRM from CPE indicates errors and the signal received from the network at the remote is error free CV L Code Violation Line Total BPV count PRM FE a Performance Report Monitoring Far End The PRM from the network indicates errors and the signal received from the CPE is error free PDVS L Pulse Density Violation Seconds Line Seconds with excessive zeroes AMI 16 ze...

Page 43: ...ym Description ES Errored seconds Seconds with HDSL2 CRC 1 or LOSW 1 SES Severely errored seconds Seconds with HDSL2 CRC 50 or LOSW 1 UAS Unavailable seconds Based on 10 contiguous SES occurrences CV Code Violation Total count of HDSL2 CRC errors LOSWS Loss of Sync Word Second Seconds with LOSW 1 Monitor Performance Event Log Config Inventory Rlogon Help H2TU C HDSL2 31 Day History Page 1 of 3 Dat...

Page 44: ...ay 1 Hour 15 Min Start 00 00 12 00 12 30 ES L 0 0 0 SES L 0 0 0 UAS L 0 0 0 CV L 0 0 0 PDVS L 0 0 0 ES P 0 0 0 SES P 0 0 0 UAS P 0 0 0 PRM NE 0 0 0 PRM FE 0 0 0 B8ZSS 0 0 0 MSEC 3482 1801 1 Press C l ear Current Statistics Press Space to cycle through Interface H2TU R DS 1 choices and Enter to view Statistics Current ID xxxx xxxx xxxx xxxx 04 21 00 12 30 01 H2TU C System OK Monitor Performance Eve...

Page 45: ...Press the to select an interface H2TU C DS1 H2TU R DS1 H2TU C HDSL2 or H2TU R HDSL2 then press 3 Press the until Alarm History is selected then press 4 Press or to page through the alarm history screens 5 Press to clear the selected alarm history screen Monitor Performance Event Log Config Inventory Rlogon Help H2TU C HDSL2 Current Statistics 1 Day 1 Hour 15 Min Start 00 00 12 00 12 30 ES 0 0 0 SE...

Page 46: ...story Alarm First Last Status Count LLOS 03 16 00 00 00 03 16 00 00 45 ALARM 12 LAIS OK 0 DBER 03 16 00 00 37 03 16 00 00 45 OK 7 Press C l ear Alarm History Press Space to cycle through Interface H2TU C DS 1 choices and Enter to view Statistics Alarm History ID xxxx xxxx xxxx xxxx 04 21 00 12 30 01 H2TU C System Alarm Monitor Performance Event Log Config Inventory Rlogon Help H2TU R DS 1 Alarm Hi...

Page 47: ... pattern Equipment not suited to detect AIS CI still detects this signal as an AIS AIS CI is sent toward the network indicating that an LOS RLOS or AIS RAIS has been received from the CPE RAI RRAI Remote Alarm Indication at the H2TU R Indicates an RAI alarm yellow from the CPE with errors from the line unit or network TX RAI CI TRCI Transmit RAI CI Remote Alarm Indication at the H2TU R Upon recept...

Page 48: ...ion threshold Set the HDSL2 Loop Attenuation Threshold option to zero HBER Block Error Rate The HDSL2 BER has exceeded the set threshold limits of 10 7 or 10 9 Select NONE for the HBER system option SHORT a Indicates a short between the Tip and Ring of the HDSL2 pair Cannot be inhibited GND a The HDSL2 loop is grounded Cannot be inhibited OPEN a Indicates a line power open condition Cannot be inhi...

Page 49: ...e 1 of 7 Location Date and Time Entry 1 System 04 21 00 12 25 00 DS1 Alarm Register reset 2 System 04 21 00 12 25 00 HDSL2 Alarm Register Reset 3 System 04 21 00 12 25 00 DS1 Performance Register Reset 4 System 04 21 00 12 25 00 HDSL2 Performance Register Reset 5 System 04 21 00 00 13 32 Time set 12 25 00 6 System 03 16 00 00 13 27 Date set 04 21 00 7 H2TU C 03 16 00 00 13 27 NLOC Loop down 8 H2TU...

Page 50: ...hold crossed of PRM NE trouble on CPE receive Current statistics reset Event Log reset H2TU R Power up down HDSL2 DC pair open begins ends on any segment HDSL2 Ground fault begins ends on any segment HDSL2 HBER alarm threshold crossed on any segment HDSL2 loop attenuation threshold crossed on any HDSL2 I F HDSL2 margin alarm threshold crossed on any HDSL2 I F HDSL2 unavailability begins ends on an...

Page 51: ...port Sets ADS1 option to MUX or CTHR LLOS b Local Loss of Signal Loss of the DSX 1 input signal Cannot be inhibited RLOS b Remote Loss of Signal Loss of the H2TU R DS1 input signal Cannot be inhibited LAIS Local Alarm Indication Signal Indicates an AIS all ones pattern is being transmitted from the local DS1 output port Cannot be inhibited RAIS Alarm Indication Signal at the H2TU R Indicates an AI...

Page 52: ... The second part of the ALRM message which defines the cause of the alarm remains Both parts of the message remain until the alarm condition clears or another higher priority alarm occurs PRMN Performance Report Messaging Near End H2TU R PRM NE BER threshold has been exceeded Set DBER threshold to DIS PRMF Performance Report Messaging Far End H2TU R PRM FE BER threshold has been exceeded Set DBER ...

Page 53: ...NE CODE The OCT 55 test pattern can be used in unframed mode to stress the system and verify data integrity In an SF or ESF framing mode excessive zero anomalies may occur which causes the H2TU C to report ES SES and UAS errors according to ANSI T1 231 1997 LOS event AIS event Remove alarm pattern TLOS NLBP FT1 ALMP NAIS DIS DIS ENA ENA AIS AIS AIS LOS LOS CI YES YES NO NO Loopback to Network LOS ...

Page 54: ...t port of the H2TU C or H2TU R Entering the loopback code into the test equipment connected to the H2TU C or H2TU R Generic Loopback Commands The HiGain HDSL2 Generic Loopback GNLB commands allow you to use inband codes to loop up either NLOC 4 in 7 or NREM 3 in 7 toward the network In addition these inband codes loop up CREM 6 in 7 or CLOC 5 in 7 toward the customer Either loopup condition can be...

Page 55: ...k Loopup or NID ESF DL code Invokes H2TU R loopback toward network X SMJK LpDn PL 11100 3 in 5 SmartJack Loopdown or NID payload PL code Removes SMJK NLOC NREM CLOC and CREM X SMJK LpDn ESF DL 1111 1111 0010 0100 SmartJack Loopdown or NID ESF DL code Removes SMJK NLOC NREM CLOC and CREM X HiGain HDSL2 systems feature the SmartJack option which can emulate a Network Interface Device NID for the pur...

Page 56: ... is patterned after the Teltrend addressable T1 repeater loopbacks A3LB and A4LB are patterned after the Wescom addressable T1 repeater loopbacks All three SPLBs have been enhanced to handle the specific requirements of the following HiGain HDSL2 customers A2LB Teltrend Southwestern Bell A3LB Wescom New England Telephone Bell Atlantic A4LB Wescom Mod 1 New York Telephone A2LB can be configured to ...

Page 57: ...E CLO NR1 CR1 NR2 CR2 4 Press SEL to activate the selected loopback The previous loopback is terminated Once a loopback is selected and activated the loopback remains active until it times out based on the LBTO setting When a loopback times out the display then returns to the normal display mode With the exception of SmartJack any HiGain HDSL2 loopback can be executed using the MODE and SEL button...

Page 58: ...acks and miniature 210 series bridging jacks as shown in Figure 2 on page 4 Connecting one cable between the two bridging jacks and another between the two LINE jacks splits the IN and OUT and creates metallic loopbacks toward both the DSX 1 and the H2TU C 388 If separate plugs are inserted into both LINE jacks with the other end disconnected the BRG jacks can be used to send and receive test patt...

Page 59: ... SPAN HLU HLU HLU HRU 412 HRU 412 3 in 7 NREM HRU 412 HRU 412 HRU 412 HRU 412 HDSL2 SPAN HDSL2 SPAN HLU HLU HLU HLU HLU HLU HRU 412 HRU 412 HRU 412 HRU 412 HRU 412 HRU 412 C742 11000 2 in 5 H2TU C H2TU C NREM SMJK TLOS LOGIC Loopbacks Toward Customer CI Customer Interface DSX 1 Loopbacks Toward Network Set the NLBP option to AIS to send AIS indicated by an all ones pattern for any network loopback...

Page 60: ... H2TU R identifies CREM and the H2TU C identifies NLOC with 231 bit errors including the frame bits When framed data is being sent in the Auto framing mode the number of the 231 bit errors detected by the test set varies from 229 to 231 depending on whether or not the test set counts frame errors as bit errors and on the number of frame bits contained in the block of 231 error bits The H2TU R and ...

Page 61: ...pattern is being sent This also applies to ILR Time out Override and Query commands The H2TU C is now in logic loopback if the IOR NLOC loopback command was sent The Time out Override command or a Loopdown command can override the selection made for the loopback time out detailed Setting the Loopback Time out Option on page 49 If the Time out Override code 1101 0101 1101 0110 D5D6 is received afte...

Page 62: ...looped down disarmed and returned to normal operation send the disarm inband code 11100 or the ESF DL code FF24 The Armed mode has an automatic time out of 120 minutes but this timer is reset to 120 for any of the following events Loopback terminates manually or time out Query Alternate query Far end activate Another ARM command This timer is inhibited while any of the valid command codes are bein...

Page 63: ...repeater loopback commands All code sequences must be present for at least 5 seconds Table 23 Addressable Repeater Loopback Commands A3LB and A4LB Name Description Binary Code a Hexadecimal Equivalent a The left most bit arrives first in all sequences The detection algorithm functions reliably with a random 10 3 Bit Error Ratio BER on the facility The entire arming and loopback sequence can also b...

Page 64: ...sing Physical Height 3 62 in 9 2 cm Width 0 69 in 1 8 cm Depth 10 in 25 4 cm Weight 0 5 lb 23 kg Mounting DDM high density shelf HDSL2 Line Code 1 552 Mbps OPTIS Transmission Full duplex Media One non loaded copper two wire cable pair Output 13 8 dBm 0 5 dB at 135 Ω 0 450 kHz at CO side 13 5 dBm 0 5 dB at 135 Ω 0 350 kHz at remote side Line Impedance 135 Ω Maximum Provisioning Loss 35 dB at 196 kH...

Page 65: ...hermal loading limitations imposed when using the H2TU C in a Controlled Environmental Vault CEV or other enclosures are determined by applying its power parameters to the manufacturer s requirements for each specific housing The 42 5 Vdc Power Consumption is the maximum total power that the H2TU C consumes or draws from the shelf power source This parameter is needed when the H2TU C is in a locat...

Page 66: ...nt Control Bus on pin 104 of the card edge connector This allows the various ADC Management System protocols to manage the H2TU C through the HMU 319 HiGain Management Unit Whenever the H2TU C is under management the MNGD message displays periodically on the front panel display Fuse Alarm Pin 117 on the card edge connector is a Fuse Alarm that is driven to 48 Vdc whenever its onboard fuse opens So...

Page 67: ...T PORT Figure 27 shows the craft port adaptor and its connection to a DB 9 or DB 25 connector on a maintenance terminal Figure 27 210 to DB 9 Adapter H2TU C 388 DB 9 Connector DCE RD Receive Data TD Transmit Data 2 3 5 DB 9 Connector DTE DB 25 Connector DTE 2 3 5 2 3 7 GND Terminal Terminal ...

Page 68: ...connect interface The H2TU C contains a DS1 frame synchronizer controlled by an 8 bit microprocessor that determines the type of framing on the DS1 stream and synchronizes to it The H2TU C recognizes Superframe SF including D4 or Extended Superframe ESF framing Figure 28 H2TU C 388 List 1E Block Diagram Timing The low loop wander 0 3 UI max of an H2TU C when used with remote units allows the circu...

Page 69: ... C 388 List 1E April 21 2000 61 GROUND FAULT DETECT The H2TU C 388 has a Ground Fault Detect GFD circuit which detects a ground or a resistive path to ground on any wire of the HDSL2 loop This makes the product compliant with the Class A2 requirements of GR 1089 ...

Page 70: ...e with the August 1999 T1 E1 4 99 006R5 HDSL2 standards The H2TU C 388 is compatible with the following DDM high density shelves and associated equipment ADC HCS 402 two slot shelf with 150 1193 01 adapter Shelf 23 inch Larus FT2 1188 28 slot connectorized AT T DS1 Ext 28 slot connectorized Shelf 19 inch Larus FT21187 20 slot connectorized Cabinet Distant Terminal 23 inch Larus FT2 1190 12 slots f...

Page 71: ...em Turn Up and Testing Network Monitoring upstream or downstream Power Monitoring and Remote Surveillance Service Maintenance Agreements Systems Operation BIA Technical Assistance Center 800 638 0031 USA and Canada or 714 730 3222 Fax 714 730 2400 Email wsd_support adc com Technical Information System Network Configuration Product Specification and Application Training product specific Installatio...

Page 72: ...LDL Flash Download G GFD Ground Fault Detect GNLB Generic Loopback H HBER HDSL2 Block Error Rate HCDS High Capacity Digital Service HDSL2 High bit rate Digital Subscriber Line 2 HES HDSL2 CRC Error HG HiGain I ID Identification IOR Intelligent Office Repeater IR Intelligent Repeater L LA Loop Attenuation LAIS Local Alarm Indication Signal LBPV Local Bipolar Violation LEC Loopback Enable Code LLOS ...

Page 73: ...RAIS Remote Alarm Indication Signal RLOS Remote Loss of Signal ROVR RAI Overwrite RTPV Remote Provisioning S SES Severely Errored Seconds SES L Severely Errored Seconds Line SES P Severely Errored Seconds Pat SF SuperFrame SMJK Remote SmartJack Loopback SPLB Special Loopback SPRM Supplemental PRM T TIP Transition in Progress TR1 Transaction Language 1 TRCI TX RAI CI Indication Customer Installatio...

Page 74: ...152 388 115 03 Issue 03 List of Abbreviations H2TU C 388 List 1E April 21 2000 66 ...

Page 75: ... to ADC during the 30 day warranty period along with proof of the date of shipment The transportation charges for shipment of returned products to ADC will be prepaid by the Buyer ADC will pay transportation charges for shipment of replacement products to Buyer unless no trouble is found NTF in which case the Buyer will pay transportation charges ADC may use reconditioned parts for such repair or ...

Page 76: ...n 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 DNV Certification Inc REGISTERED FIRM ISO 9001 TL 9000 DOCUMENT 152 388 115 03 ISSUE 03 9j 1213089 ...

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