ADTRAN FNID User's Manual
Contents
1. FNID network loopback loops the FT1 signal back toward the network FNID CPE loopback loops the FT1 signal back toward the customer FNID network loop connection locations are illustrated in Figure 3 Appendix A contains diagrams and descriptions of the FT1 system loopback capabilities SS T1 TO CPE DS1 R1 TO CPE T FROM CPE e S1 R FROM CPE T1 LOOP1 R1 LOOP1 GND 48V Figure 3 FNID Network Loop Connection Locations 5 CONTROL PORT OPERATION The FNID provides a faceplate mounted DB9 connector that supplies an RS 232 interface for connection to a controlling terminal The pinout of the DB9 is illustrated in Figure 4 TXD Transmit Data RXD Receive Data GOGO GOGGA SGN Signal Ground Figure 4 RS 232 DB9 Pin Assignments The terminal interface operates at data rates from 2 4 kbps to 19 2 kbps The asynchronous data format is fixed at 8 data bits no parity and 1 stop bit The supported terminal type is VT 100 or compatible NOTE If you are using a personal computer PC with terminal emulation capability be sure to disable any power saving programs Otherwise communication between the PC and the HDSL unit may be disrupted resulting misplaced characters or screen timeouts Operation A terminal session is initiated by entering multiple space bar characters which are used by the FNID to determine the speed of the t2. 1 trademarks registered trademarks or trade names of their respective holders With the exception of the physical dimensions of the units the FNID and T200 FNID units are functionally identical The FNID terminates local loop DSL signals originating from the Central Office CO unit and transforms the DSL signal into fractional T1 signals to be delivered to the customer The DSL local loop operates over a single twisted pair The FNID communicates over the twisted pair to the FT1 DP ADTRAN part numbers 1242040L1 1242046LX 1242047LX 1242048LX 1245205L1 1245206L1 1245207L1 1245208L1 located at the CO The payload between FT1 DP and FNID is programmable from the faceplate rotary switch as follows 2 channels minimum 128 kbps 3 channels ccceseesteeetees 192 kbps 4 channels ccccecseesteeetees 256 kbps 5 channels cccessesteeetees 320 kbps 6 channels cccescesteeeeees 384 kbps Teehannelsi sses niere 448 kbps 8 channels cccesceeseeeseees 512 kbps 9 channels cceseesseeetees 576 kbps 10 channels ccscceseeeeeees 640 kbps 11 channels ceteeeeeeeees 704 kbps 12 channels maximum 768 kbps The system carries a small amount of overhead used for maintenance and performance The FNID delivers a standard ANSI T1 403 interface to the customer equipment at 1 544 Mbps The extra bandwidth is nulled out in the form of idle stuffed channels 2
3. 35 25 An approximation for the maximum amount of wideband noise on a DSL local loop as measured by a 50 kbps filter is lt 31 dBrn An approximation for the maximum level of impulse noise as measured using a 50 kbps filter on an DSL loop is lt 50 dBrn These approximations are to be used as guidelines only and may vary slightly on different loops Adhering to the guidelines should produce performance in excess of 107 BER 61245201L1 5C Section 61245201L1 5 Issue 3 11 7 TROUBLESHOOTING PROCEDURES Table E is a troubleshooting guide for the FNID 8 MAINTENANCE The ADTRAN FNID requires no routine maintenance In case of equipment malfunction use the faceplate Bantam jack connectors to help locate the source of the problem ADTRAN does not recommend that repairs be performed in the field Repair services may be obtained by returning the defective unit to the ADTRAN Customer Service RMA Department 9 PRODUCT SPECIFICATIONS Specifications for the FNID are provided in Table F 10 WARRANTY AND CUSTOMER SERVICE ADTRAN will replace or repair this product within five years from the date of shipment if the product does not meet its published specifications or if it fails while in service For detailed warranty repair and return information refer to the ADTRAN Telco Network Equipment Warranty and Return Policy and Procedure document 6000008 10A Return Material Authorization RMA is required prior to
4. AMI LBO gt GB BPV gt 0000 ES gt 0000 SES gt 0000 UAS gt 0000 ALARMS gt NONE NO SEALING CURRENT FNID CUSTOMER DSL 9000 00000 9000 00000 498 0090498 LOOPBACKS INACTIVE FNID SIGNAL QUALITY CJ lamg amp amg ama ama ms mre a A A O A OE A OE A SOE aE A Sa A a SPNWAUDNOWO Press Z to zero registers M for Main Menu p Figure 7 Current System Status Screen PERFORMANCE HISTORY lt VIEW 2 FNID DS1 RECEIVER gt 24 HOUR REGISTERS VIEW LOCATION DIAGRAM lt lt CURRENT gt lt PREVIOUS Fl gt 15 MINUTE REGISTERS Press view number to select view M to return to Main Menu Na Z Figure 8 Performance History Screen Section 61245201L1 5 Issue 3 61245201L1 5C LOOPBACK OPTIONS gt lt NET lt eeeeeeeeeees esses gt CUST 1 LOOPBACK TO NETWORK AT FT1 DP INACTIVE 2 LOOPBACK TO CUSTOMER AT FT1 DP INACTIVE 3 LOOPBACK TO NETWORK AT FNID INACTIVE 4 LOOPBACK TO CUSTOMER AT FNID INACTIVE Press corresponding number to toggle loopback option Press M for Main Menu Figure 9 Loopback Options Screen XK SELF TEST Press S to initiate FT1 FP and FNID self tests Press M to return to the Main Menu Z Figur
5. T1 101 timing requirements Tests Diagnostic Sro s2cs2 soso cease tees eee career odes Loopback FNID initiated with DDS latching loopbacks initiated with FT1 DP command Self Test Physical Dimensions 2 25 High 8 75 Wide 10 25 Deep Weieen a hieb ladies Mika hse hee 4 pounds standalone Environment Temperature ies ariana Tea Rr AAE ET Operating Standard 40 to 70 C Storage 40 to 85 C Part Numbers Circuit Pack sine nam Bhs HA ee 1245201L1 61245201L1 5C Section 61245201L1 5 Issue 3 13 Appendix A FT1 Loopbacks 1 GENERAL This Appendix is an overall reference to the loopback capabilities of the ADTRAN Fractional T1 system Included in this Appendix is a description of the FT1 loopbacks and the methods for activating the FT1 loopbacks 2 FT1 LOOPBACKS Figure A 1 shows the application from the central office CO to customer premises The FT1 Repeaters are shown for convenience and are not necessary parts of the FT1 network The loopbacks shown are as follows FT1 DP network loopback FT1 DP CPE loopback FT1 Repeater 1 network loopback FT1 Repeater 2 network loopback FNID network loopback FNID CPE loopback 7IMOAW gt There are two loopbacks available to the FT1 DP The FT1 DP network loopback loops the FT1 signal back to the network The FT1 DP CPE loopback loops the FT1 signal back to the customer The FT1 DP network loopback is a digital loopback
6. returning equipment to ADTRAN ADTRAN does not recommend that repairs be performed in the field For service RMA requests or further information contact one of the following numbers ADTRAN Customer Service ADTRAN Telco Technical Support 800 726 8663 Standard support hours cce Monday Friday 7 a m 7 p m CST Emergency suppotrt 7 days week 24 hours day Sales yenin 800 827 0807 RMA repair service eeeeeeeeeeeeees 256 963 8722 Repair and Return Address ADTRAN Inc Customer and Product Support CAPS Department 901 Explorer Boulevard Huntsville Alabama 35806 2807 Table E Troubleshooting Guide Condition Solution wn Power is OK but does not achieve loop syne DSL LED is off BRWNe All front panel indicators are off 1 Verify that the FNID is properly seated in the housing Make sure power supply feed the FNID is in good working condition If Steps 1 and 2 pass replace the FNID Verify that the loop conforms with CSA guidelines not too long etc Verify that the loop loss at 200 kHz is not greater than 36 dB Verify that noise on the DSL loop is within acceptable limits If Steps 1 through 4 pass and loop sync is still not available replace the FNID 12 Section 61245201L1 5 Issue 3 61245201L1 5C Table F FNID Unit Specifications Loop Interface Modulation Type cceccesesceseesseseeeeeeeeteeeeeeees 2B1Q NOG
7. toward the CO see Figure A 2 This loopback is initiated by the OCU latching loopback command N1010101 or by the craft interface when available The OCU latching loopback code is detected in the primary DSO of the FT1 circuit the channel where the FT1 DP is physically installed to control the FT1 circuit looping When the FT1 circuit is looped all DSOs in use will be looped back toward the network The DSOs will be transmitted on to the customer The FT1 DP CPE loopback is a digital loopback toward customer premises as shown in Figure A 3 This loopback is initiated by the REM LBK button on the FNID or by the craft interface when available When the FT1 circuit is looped all DSOs in use will be looped back toward the customer All DSOs in use will be filled with all 1s and sent toward the network DSX 1 a Interface FT1 DP Repeater FNID Customer a4 moe Oooo TNE WOOO oe PSS Tinu e Premises Peres oN gt g Equipment Central Office A i a O Channel Bank Figure A 1 FT1 Loopbacks HDSL DS1 DSX 1 Interface FT1 DP Repeater Interface paaa DOCK Dooc me ey gt lt a Central Office Customer Premises D4 Local Loop Channel Bank Figure A 2 FT1 DP Network Loopback DS1 DSX 1 FT1 DP FNID Interface HDSL aL Interface atic Local Loop Customer Premises Central Of
8. ADRAN Section 61245201L1 5C Issue 3 September 1999 CLEI Code NCDIFBH4 _ _ FNID and T200 FNID Fractional T1 Network Interface Device Installation and Maintenance CONTENTS Ts GENERAD ineeiiegiseetisi noiera E R ii 1 2 INSTALLATION vycocscccciscenchevceinest coniencieadespeen Gawesebeacnspe oa couees 2 3 CONNECTIONS cecina aR 4 DSL SYSTEM TESTING sated ers 5 CONTROL PORT OPERATION 0 0 ccececseseeeeeeseeeeeneees 4 6 DSL DEPLOYMENT GUIDELINES eerren 7 8 9 10 FIGURES Figure 1 ADTRAN FNI Doreen tenenan 1 Figure 2 FNID Option Switch Locations cee 2 Figure 3 FNID Network Loop Connection Locations 4 Figure 4 RS 232 DB9 Pin Assignments cc eeeeeeeeeee 4 Figure 5 Introductory Menu Screen Figure 6 HDSL Main Menu Screen Figure 7 Current System Status Screen cesses 8 Figure 8 Performance History Screen sever sues Figure 9 Loopback Options Screen ns Figure 10 Self Test Options Screen s Figure 11 Provisioning Options Screen cecesceeeeeseeeees Figure 12 Troubleshooting Screen eeceeeeeeeeeeeeneeeees Figure 13 DSL Deployment Guidelines 00 0 eee Figure A 1 FT1 Loopbacks 0 00 cesssseseeeceeeeeeseeeeeeseeees Figure A 2 FT1 DP Network Loopback kaiii Figure A 3 FT1 DP CPE Loopback ee Figure A 4 FT1 Repeater 1 or 2 Network Loopback A 2 Figure A 5 FNID Network Loopback 00 cieeeeseeeeeeeeeteees A 2 F
9. INSTALLATION ha CAUTION SUBJECT TO ELECTROSTATIC DAMAGE OR DECREASE IN RELIABILITY HANDLING PRECAUTIONS REQUIRED After unpacking the unit immediately inspect it for possible shipping damage If damage is discovered file a claim immediately with the carrier then contact ADTRAN Customer Service see subsection 10 of this practice FNID Option Selections Configuration strap P1 selects FNID settings Figure 2 illustrates P1 location and options 3 J Figure 2 FNID Option Switch Locations P1 selects DS1 Tx attenuation to the customer It is selectable between OdB and 15dB Provisioning options selecting B8ZS AMI or SF ESF are automatically controlled on the FNID when selected at the FT1 DP The settings on the FT1 DP are encoded and transmitted to the FNID once the circuit has achieved synchronization Front Panel Indicators There are five status indicators on the front panel See Table A for a description of these indicators Section 61245201L1 5 Issue 3 61245201L1 5C Table A Front Panel Functions Indicator Description subsection 6 of this practice DSE sanns Indicates five possible states of the quality of the DSL signal No synchronization of FT1 DP and FNID Poor signal quality 107 BER Marginal signal quality lt 2 dB margin above 107 BER Good signal quality lt 2 dB margin above 107 BER An error detected on the loop will cause th
10. aie ticee tenes eta AE SAS Full Duplex Echo Cancelling Number of Pairs oo ceececeeeseeseeeeeeeseeeeeeeeeneesees One Bit Rate citar bee ani Se 784 kbps Baud Rates Sie ett ath to AE Se 392K baud Service Ran Ge haacharecieneangn ke no n Defined by Carrier Service Area Guidelines LOOP LOSS icc enni Qe ctesetes eetas ee tinen eh ete ates 36 dB maximum 200 kHz Bridged Tapssicc esissecweesceeeaeea acts arene weet Single Taps lt 2 kft Total Taps lt 2 5 kft Performante asen nea A A a Compliant with Bellcore TA NWT 001210 Return Loss huenea uonane nione a 20 dB 40 kHz to 200 kHz DSL Tx Signal Level 13 5 dBm Input Impedance eee eeeceeceseeseeeeeeteeereeseeeees 135Q DS1 Channelization occ eeeceeeeeseeeesteeeeeees Channels 1 12 Customer Interface 4 wire DS1 T1 403 compatible DS1 Signal Output Level s s s Programmable through FT1 DP at 0 or 15 dB DS1 Input Signal Level oe eeeeeeeeeeeee 0 or 15 dB DS1 Line Coding oo cece eeeeeeseeneeeeeneeeeeeseees AMI B8ZS DS1 Framing Format 00 0 eeeeeeeeeeeeereeeee SF ESF Power Span Power siete tins hee hence Reeves Selectable less than 140 VDC Class A2 with GFI circuit or less than 190 VDC Class A2 with GFI circuit Locally Powered cscceceseseeseeseceeeeeseeseeeeeeees 48 V at 75 mA Clock Sources Clock Sources hati dead cent ees Internal DSL Loop Derived Internal Clock Accuracy 0 0 eect eteeeeeeteteeeees 25 ppm exceeds Stratum 4 Meets
11. d and a message describing the failure will appear 6 Section 61245201L1 5 Issue 3 61245201L1 5C ADTRAN 901 Explorer Boulevard Huntsville Alabama 35806 2807 For Information or Technical Support Normal Support Hours C 7am 7pm CST or Emergency Support Hours C 7x24 Voice Toll Free 800 726 8663 Fax 256 963 6217 Voice 256 963 8100 Internet www adtran com FT1 DP INFORMATION SIGNAL QUALITY FNID INFORMATION SIGNAL QUALITY E a acl ER 9 A R aes EN 9 S N 8 S N DATA NOT AVAIL LJ 8 CLEI 7 CLEI 7 MANF 6 MANF LJ 6 CL 5 5 4 EJH 4 CL 3 EI 3 LC 2 EJ 2 cL 1 EH 1 2 0 AT FT1 DP AT FNID Press M to view Main Menu Figure 5 Introductory Menu Screen Na ADTRAN FT1 MAIN MENU 1 CURRENT SYSTEM STATUS 2 PERFORMANCE HISTORY 3 ADTRAN INFORMATION 4 LOOPBACK OPTIONS 5 SELF TEST 6 PROVISIONING 7 TROUBLESHOOTING Choose a screen by pressing the corresponding number Z Figure 6 HDSL Main Menu Screen 61245201L1 5C Section 61245201L1 5 Issue 3 FT1 DP NETWORK DSL Q000 00000 Q000 00000 498 00498 LOOPBACKS INACTIVE FT1 DP SIGNAL QUALITY 9 CJ meres rote r4 ee eee ee ee SrPNWAUDN OC CURRENT SYSTEM STATUS ELAPSED TIME 00 08 18 lt LOSS gt lt SYNC gt lt ES 15M 24H gt lt SES 15M 24H gt lt UAS 15M 24H gt FNID DS1 FRAME gt SF CODE gt
12. d is properly connected for either standalone or _ shelf mounted applications Table B FNID Card Edge Pin Definitions Pin Designation Description Traen CH GND Chassis ground OEE DS1 T1 we DS1 Receive Out tip to Customer Interface Tenna FHT nassen DSL Loop Tip facility Ve cies CH GND Chassis ground Bearn HI R wo DSL Loop ring facility ISo DSI RI we DS1 Receive Out ring to Customer Interface 48 Return Frame Ground 48 VDC DS1 Transmit In ring from Customer Interface SAt te DST prish DS1 Transmit In tip from Customer Interface 61245201L1 5C Section 61245201L1 5 Issue 3 4 DSL SYSTEM TESTING The ADTRAN DSL system provides extensive ability to monitor the status and performance of the DS1 signals and DSL loop signals The front panel LEDs on the FNID are explained in subsection 2 of this practice Additional testing features are described in this section Specifically the Bantam jacks on the front panel of the FNID are described DS1 MON Bantam Jack The FNID provides a dual Bantam jack on the front panel This jack labeled MON provides a non intrusive access point for monitoring the transmit and receive signals at the DS1 interface point NOTE MON Rx provides access to the DS1 input from the customer s equipment MON Tx provides access to the DS1 output of the FNID toward the customer FNID Loopbacks There are two loopbacks available to the FNID
13. e 10 Self Test Options Screen 61245201L1 5C Section 61245201L1 5 Issue 3 PROVISIONING PROVISIONS CURRENT SETTINGS HARDWARE SETTINGS a Sense SE Re ae eae See aS S She pesos sae 1 DS1 CFNID LINE CODE B8ZS B8ZS 2 DS1 CFNID FRAMING ESF ESF 3 DS1 CFNID TX LEVEL dB 4 LOOPBACK TIMEOUT 20 MIN 20 MIN 5 LATCHING LOOPBACK ENABLED ENABLED 6 DSO SEQUENCE ALTERNATING ALTERNATING 7 NUMBER OF DSOS 12 768Kbps 12 768Kbps Press n to change corresponding provision Cex 2 for FRAMING H to copy hardware settings to current settings I to implement and save current setting changes M to return to the main menu A Figure 11 Provisioning Options Screen z TROUBLESHOOTING DISPLAY FT1 DP FNID gt lt NET lt eessssessssssSsSSSSsSS 5 gt CUST lt gt ere lesan ALARMS PROBLEM INDICATED FT1 DP RED CHANNEL BANK ALARM FT1 DP RED DSL LOSS Press M for Main Menu Z Figure 12 Troubleshooting Screen 10 Section 61245201L1 5 Issue 3 61245201L1 5C 6 DSL DEPLOYMENT GUIDELINES The ADTRAN FT1 DSL system is designed to provide Fractional DS 1 based services over loops designed to comply with Carrier Service Area CSA guidelines CSA deployment guidelines are giv
14. en below 1 All loops are non loaded only 2 For loops with 26 AWG cable the maximum loop length including bridged tap lengths is 9 kft 3 For loops with 24 AWG cable the maximum loop length including bridged tap lengths is 12 kft 4 Any single bridged tap is limited to 2 kft Total bridged tap length is limited to 2 5 kft The total length of multi gauge cable containing 26 AWG cable must not exceed 12 3 L 9 L in kft NN L Total length of 26 AWG cable excluding bridged taps in kft LP Total length of all bridged taps in kft This deployment criteria is summarized in the chart shown in Figure 13 INVALID DSL CABLE LENGTHS 10 9 TOTAL ae BRIDGED 20 TAP 8 1 5 mm LENGTH 70 5 KFT 7 0 0 7 VALID DSL CABLE LENGTHS WORKING LENGTH OF 24 GAUGE OR COARSER CABLE KFT O 0 1 2 3 4 5 6 7 8 9 WORKING LENGTH OF 26 GAUGE CABLE KFT Figure 13 DSL Deployment Guidelines Recommended maximum local loop loss information for PIC cable at 70 F 135Q resistive termination is provided in Table D Table D Loop Insertion Loss Data Frequency Hz Maximum Loss dB 32000 ETENEE 12 0 10 000 iinic 15 0 50 000 vueio 25 5 100 000 oo eee eeeeeeeees 30 0 150 000 nn nni 32 75 200 000 eeeeceeseeeeeeeees
15. erminal Once the speed has been determined an Introductory menu will appear as illustrated in Figure 5 For abbreviations used in the screen diagrams refer to Table C From the Introductory menu the Main menu may be selected The Main menu provides access to detailed performance and configuration information as illustrated in Figure 6 HDSL Main Menu Screen 4 Section 61245201L1 5 Issue 3 61245201L1 5C Table C Definition of Screen Abbreviations Abbreviation Definition ES eee Genet Errored seconds DS1 SF Second in which a BPV or frame bit error occurs DS1 ESF Second in which a BPV or CRC error occurs DSi iiai Second in which a CRC error occurs SES pnan Severely errored seconds DS1 SF Second in which 1554 BPVs or 8 frame bit errors occur DS1 ESF Second in which 1544 BPVs or 320 CRC errors occur DSLssvenccnee Second in which 165 CRC errors occur UAS hrenn Unavailable seconds DS leisi deeds Second in which there is a loss of signal or sync DSL oe Second in which there is a loss of signal or sync SE r Superframe format ESE reniris Extended superframe format B8ZS woe eeeeseeseeee Binary 8 zero substitution AMID aprises Alternate mark inversion LBO Sayeed Line build out BEV rinners Bipolar violation DS Is eek aus Second in which a bipolar violation occurs TNT tiie EAE T1 network interface unit SAN Sescieest tate Sesh Serial number ISM ineen Fifteen minute period 24H ae eosic
16. fice D4 Channel Bank Figure A 3 FT1 DP CPE Loopback 61245201L1 5C Section 61245201L1 5 Issue 3 A 1 There is one loopback available to the FT1 Repeaters The FT1 Repeater Network loopback is a digital loopback toward the CO as shown in Figure A 4 The loopbacks are initiated by the DDS latching loopback codes for NEI Position 1 N1000001 for FT1 1 or NEI Position 2 N100001 for FT1 Repeater 2 The NEI latching loopback is detected in the primary DSO of the FT1 circuit the channel where the FT1 DP is physically installed to control the looping of the FT1 circuit When the FT1 circuit is looped all DSOs in use will be looped The DSOs in use will also be transmitted on to the customer There are two loopbacks available to the FNID The FNID network loopback loops the FT1 signal back toward the network The FNID CPE loopback loops the FT1 signal back toward the customer The FNID network loopback is a digital loopback toward the CO as illustrated in Figure A 5 This loopback is initiated by the DDS latching loopback code for NEI Position 1 N1000001 for a non repeatered loop or NEI Position 2 N1000001 for a single repeater loop or by NEI Position 3 N1000001 for a two repeater loop by the craft interface when available or by the REM LBK button at the FT1 DP The NEI Position 1 latching loopback is detected in the primary DSO of the FT1 circuit the channel in which the FT1 DP is physically i
17. he FT1 system When the loopback is activated on the device the whole FT1 bandwidth is looped The FT1 DP FT1 Repeater and FNID each Latching loopbacks for the FT1 system are activated by transmitting the following latching loopback sequence in the primary DSO of the FT1 system A Minimum of 35 transition in progress TIP bytes N0111010 B Minimum of 35 loopback select code LSC bytes as defined in Table I C Minimum of 100 loopback enable LBE bytes N1010110 D Minimum of 35 all 1s bytes S1111111 plus a minimum of 100 LBE bytes N 1 iterations where N is the number of channel units of the same type i e same LSC that lie between the test center and the loopback to be operated This step is only used when there are identical channel units in tandem E Minimum of 32 far end voice FEV bytes N1011010 A 25 second watchdog timer is activated between the 35 TIP bytes and 35 LSC bytes between the 35 LSC bytes and 100 LBE bytes and between the 100 LBE bytes and 32 FEV bytes The timer requires the correct receipt of the latter sequences less than 25 seconds after receipt of the prior sequence This prevents inadvertent setting of the latching loopbacks Latching loopbacks for the FT1 system are deactivated by transmitting the following latching loopback sequence in the primary DSO of the FT1 system Minimum of 35 TIP bytes N0111010 4 LOOPUP STATE In the loopup state the active FT1 loopbac
18. iagvencescteen Twenty four hour period From the Main menu the following screens can be accessed 1 Current System Status 2 Performance History 3 ADTRAN Information 4 Loopback Options 5 Self Test 6 Provisioning 7 Troubleshooting The Current System Status screen illustrated in Figure 7 provides quick access to status information for both the FT1 DP and FNID The Elapsed Time display indicates the period of time since the unit began collecting performance information Current information for the DSL and DS1 interfaces is consolidated on this screen A key to the information provided is found in the center of the screen Arrows indicate the key applies to both the FT1 DP and FNID LOSS aehos Pulse Attenuation Measurement SYNG tannins HDSL Loop 1 Sync Status ES 15M 24H Errored Seconds SES 15M 24H Severely Errored Seconds UAS 15M 24H Unavailable Seconds For example ES 012 264 indicates that 12 errored seconds have occurred in the current 15 minute period while a total of 264 errored seconds have occurred in the last 24 hours 61245201L1 5C Section 61245201L1 5 Issue 3 A measure of signal quality for each HDSL loop is displayed in graphic form on the bottom right and left of the screen The measure is from 0 poor signal quality to 9 excellent signal quality Guidelines for interpreting the indicators are 0 Noise margin is lt 0 dB 107 BER 1 8 Margin measuremen
19. igure A 6 FNID CPE Loopback 0 ce eeceeseeseeteeeeneeeeeaes A 2 TABLES Table A Front Panel Functions 200 0 ceeeeseseeseneeeeeteeteeeeeees Table B FNID Card Edge Pin Definitions 0 00 0 Table C Definition of Screen Abbreviations Table D Loop Insertion Loss Data cccecesceeseeeteeseeeteeees Table E Troubleshooting Guide 0 ce eeeeeeseeeeeeneeeeeees Table F FNID Unit Specifications 000 0 cece eeeeeeeeeeeeeeeees Table A 1 FT1 Loopback Select Codes 0 eeeceeeeseeteees FI ran Oos O Ds ROS KOM Ouk J ia it 4 re Loc B K e REM Figure 1 ADTRAN FNID 1 General This practice is an installation and maintenance I M guide for the ADTRAN Fractional T1 Network Interface Device FNID Figure 1 is an illustration of the ADTRAN FNID Revision History This practice has been reissued to reflect additional support detail for two FT1 repeater applications The ADTRAN FNID is a network terminating unit used to deploy a fractional T1 circuit using 2 wire metallic facilities on CSA loops This practice is written to support both the T200 FNID circuit pack P N 124520111 and the FNID standalone P N 4245201L1 units The FNID is housed in a standalone metal enclosure The T200 FNID card plugs into a standard Type 200 400 multiple mounting shelf 61245201L1 5C Trademarks Any brand names and product names included in this document are
20. is LED to blink briefly DST isthe This LED indicates three possible conditions described below Offa Asters eats The customer side DS1 signal is absent or in a format that does not match the provisioned options Blinking 0 0 0 0 Indicates an error has been detected on the DS1 interface On Solid wc The customer side DS1 signal is present and synchronized LBK oo This LED indicates two possible loopback states as described below Off scien eatin Unit is not in loopback On Solid wc Local FNID loopback is active RS 232 we DB9 connector for craft interface Allows connection to controlling terminal For further information refer to REM LBK Remote Loopback Push button to toggle Loopback active inactive LOL LBK Local Loopback Push button to toggle Local Loopback active inactive 3 CONNECTIONS All connections of the FNID are made through card edge connectors Table B gives the card edge pin assignments for the FNID circuit pack The circuit pack operates in either the standalone chassis P N 1242034L2 the ADTRAN HR4 HDSL shelf P N 1242008L1 or the ADTRAN HR12 HDSL shelf P N 1242007L1 When the circuit pack is installed in any of the FNID enclosures all connections are made through the enclosure backplanes See the following ADTRAN documents for more information e 61242007L1 5 HR12 I M e 61242008L1 5 HR4 I M e 61242034L2 5 T400 Single Mount I M removable RJ 48 jacks NOTE Ensure chassis groun
21. k will provide a continuous loop for the FT1 bandwidth The data flow is continuously monitored for the loop deactivation commands to deactivate the loopbacks Also a 20 minute loopback timeout is checked If the loopback timeout is enabled any loopback that is in the loopup state for 20 minutes will be deactivated Table A 1 FT1 Loopback Select Codes respond to a different loopback select FT1 Device Loopback Select Loopback Select code allowing for sectionalization of the Code Name Code Byte network during testing Table A 1 is a FTL DP nnna OCU loopback cscsssssssssesesssseeee N1010101 list of FT1 devices and their loopback FTI Repeater 1 ccccssssseee NEI Position 1 loopback N1000001 select codes FT 1 Repeater 2 NEI Position 2 loopback N1000001 FNID without repeater NEI Position 1 loopback N1000001 FNID with one repeater NEI Position 2 loopback N1000001 FNID with two repeaters NEI Position 3 loopback N1000001 61245201L1 5C Section 61245201L1 5 Issue 3 A 3
22. nstalled to control the looping of the FT1 circuit When the FTI circuit is looped all DSOs in use will be looped The DSOs in use will be filled with all 1s and transmitted toward the customer The FNID CPE loopback is a digital loopback toward customer premises as shown in Figure A 6 This loopback is initiated by the craft interface when available When the FT1 circuit is looped all DSOs in use will be looped The data in the DSOs in use will be transmitted toward the network DSX 1 DS1 Interface FT1 DP HDSL FNID Interface Local L as Central Office gore Customer Premises D4 Channel Bank Figure A 4 FT1 Repeater 1 or 2 Network Loopback DSX 1 ENID DS1 Interface FT1 DP HDSL Interface _ _ _ k m Local Loop aie Central Office D4 Customer Premises Channel Bank Figure A 5 FNID Network Loopback DSX 1 DS1 Interface FT1 DP HDSL FNID Interface a e 7 gt Local Loop ica Central Office D4 Customer Premises Channel Bank Figure A 6 FNID CPE Loopback A 2 Section 61245201L1 5 Issue 3 61245201L1 5C 3 LOOPBACK ACTIVATION DEACTIVATION This section describes loopback activation and deactivation methods for the ADTRAN Fractional T1 system Loopback activation and deactivation is controlled with the push button located on the front panel through craft interface
23. or latching loopback codes Both the FNID and the FT1 DP have a push button located on the front panel labeled REM LBK or RLB which controls the activation of remote loopback Pressing REM LBK or RLBon the FNID activates FT1 DP CPE loopback Pressing REM LBK or RLB on the FT1 DP activates FNID network loopback or repeater loopback when a repeater is present Remote loopback is deactivated by pressing the REM LBK or RLB or waiting for the 20 minute loopback timeout if enabled The FNID and FT1 DP when available have a craft interface located on the front panel of the device The craft interface allows access to the FT1 device through an RS 232 type interface All loopbacks for the FNID and FT1 DP can be controlled from the craft interface The craft interface on the FNID can activate and deactivate the FNID network loopback and the FNID CPE loopback The FNID craft interface can also remotely activate and deactivate the FT1 DP network loopback FT1 DP CPE loopback and the repeater network loopback The craft interface on the FT1 DP can activate and deactivate the FT1 DP network loopback and the FT1 DP CPE loopback The FT1 DP craft interface can also remotely activate and deactivate the FNID network loopback and the FNID CPE loopback and the repeater network loopback FT1 DP FT1 Repeater and FNID network loopbacks can be activated by the DDS latching loopback sequence The latching loopback sequence is detected in the primary DSO of t
24. t above 107 BER in dB 9 Margin is 9 dB excellent quality above 107 BER Predicting performance based upon signal quality varies with each loop Generally a noise margin of 0 or higher will support a bit error rate of better than 107 The Performance History screen is illustrated in Figure 8 At each 15 minute interval the performance information is transferred to the 15 minute performance data registers accessed from the Performance History screen At each 24 hour interval the performance data is transferred into the 24 hour performance data register also accessed using this screen At the Current System Status screen type Z in order to reset performance registers to zero at both the Current System Status and Performance History screens Figure 9 depicts the FT1 Loopback Options screen while Figure 10 depicts the Self Test Options screen Loopbacks and Self Test may be evoked or terminated using these screens A status of current loopback conditions is also provided Figure 11 shows the Provisioning Options screen Provisioning may only be viewed from the FNID at all times Provisioning is controlled from the FT1 DP The Troubleshooting Display shown in Figure 12 graphically presents an FT1 circuit The unit reviews red yellow and blue alarm conditions in the circuit to automatically predict where a fault is located Once a fault location is suspected the corresponding portion of the circuit on the screen is highlighte
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