ADTRAN SLC-5 User's Manual
Contents
1. Bl O al l l l l l ISDN IDSL gt RPTR OCU R E L Ws 1 5x DSO DP 1 DSO DP 2 DSO DP 3 OCU Loopback Response Figure 7 IDSL DDS Loopback Response NOTE For DDS circuits with the D channel disabled all tandem U BRITE elements should be ADTRAN U BRITEs with DDS Loopback Capability for remote end test operation OCU to function properly See 2B in Figure 6 In D channel disabled applications older non DDS vintage U BRITEs may not pass the OCU latching loopback sequence to the IDSL OCU R Upon receipt of an OCU latching loopback sequence the U BRITE III passes the OCU sequence in band downstream to the IDSL OCU R U BRITE IIIs do not respond to the CSU latching loopback command but simultaneously passes it through to the CSU DSU while mapping the NT1 eoc address The IDSL OCU R reverses sealing current on its 4 wire AMI DDS interface to place the customer CSU into loopback upon receipt of the CSU latching loopback The following data sequence enables the DSO DP OCU and CSU latching loopbacks 1 Minimum of 35 transition in progress TIP bytes X0111010 2 Minimum of 35 loopback select code LSC bytes DSO DP X0000101 OCU X1010101 CSU 0110001 3 Minimum of 100 loopback enable LBE bytes X1010110 4 Minimum of 32 far end voice FEV bytes X1011010 If the U interface of the U BRITE III is not in sync the unit transmits Mux Out of2. is present ACT Active Green Green flashing ISDN Application Indicates that the terminal equipment has exchanged ACT bits with the ISDN switch DDS Application Indicates loop is terminated with an OCU R ISDN Application Once per second indicates that the ACT bit is being sent in one direction only 61102040L4 5B Section 61102040L4 5 Issue 2 9 When the U BRITE III operation is normal the ADR7 position of SW1 does not have a function NOTE This test option is only available on power up of the U BRITE III ISDN Only MLT Channel Test LUNT Mode When a Pair Gain Test Controller PGTC is connected to the U BRITE IU and the Test Initiate Voltage 116 Vdc behind 8 KQ is applied to the Tip with the Ring open the following occurs 1 The channel unit sends a Channel Test mp eoc message downstream to the LULT 2 The unit produces a 333 Hz test tone between the Tip and Ring leads This tone is compliant with TR TSY 00465 When the Test Initiate Voltage is removed the test tone is subsequently removed the active test status indication to the bank controller is removed and the Return to Normal mp eoc message is sent to the LULT The channel unit then begins re synchronization of the U interface between the LUNT and the ISDN switch ISDN Only MLT Channel Test LULT Mode When a PGTC initiates a channel test at the COT the COT channel unit sends a Channel Test mp eoc toward the LULT U
3. 4 5B Section 61102040L4 5 Issue 2 Figure 5 displays the position switch settings at ISDN network locations SLC 5 SLC 5 COT RT 2 Wire 2 Wire L T Carrier L Loop U U Customer N L NT1 T T Note Channel Channel Refer to Table 2 for switch Bank Bank function descriptions Adjacent Adjacent to to Switch Customer Source SW2 SW2 1 LUNT COT 1 LULT RT 2 ADJ 2 ADJ swi SW1 5 OFF 5 OFF D4 SLC 96 D4 SLC 96 SLC 5 SLC 5 i COT RT COT RT 2 Wire 2Wire T T Carrier Ee 2 Wire L T Carrier L Loop U A y 7 ae U Customer N L N L T T T T NT1 Channel Channel Channel Channel Bank Bank Bank Bank ISDN Adjacent to Tandem Tandem Adjacent to Switch Switch Source Sink Customer See Appropriate See Appropriate Source 1 amp M Practice 1 amp M Practice SW2 SW2 1 LUNT COT 1 LULT RT _ 2 TANDEM 2 ADJ SW1 SW1 5 OFF 5 OFF SLC 5 SLC 5 COT RT 2 Wire 2 Wire m T Carrier F Loop y S customer T T U Repeater Adjacent to Tandem Office Switch Source U Repeater SW2 SW2 1 LUNT COT 1 LULT RT 2 ADJ 2 TANDEM swi swi 5 OFF 5 PWR Figure 5 Position Switch Settings at Network Locations for ISDN Applications Section 61102040L4 5 Issue 2 61102040L4 5B Figure 6 displays the position s
4. 97 compliant will not function with the AT amp T BRITE channel units across the T1 carrier facilities The U BR1TE III must be terminated across the T1 carrier facilities with another channel unit that meets TR 397 2 Section 61102040L4 5 Issue 2 61102040L4 5B The U BRITE II will function with any ISDN 2B1Q U interface that is ANSI T1 601 compliant 2 INSTALLATION CAUTION SUBJECT TO ELECTROSTATIC DAMAGE OR DECREASE IN RELIABILITY HANDLING PRECAUTIONS REQUIRED After unpacking the unit inspect it for damage If damage is noted file a claim with the carrier then contact ADTRAN See Warranty and Customer Service To install the U BRITE III hold the unit by the front panel and insert it into the assigned slot until the edge connector is firmly seated in the backplane The ACT LED on the U BRITE HII should illuminate GREEN The CR and LP LEDs will flash GREEN then illuminate AMBER At this point push the unit latch upward until it locks into place NOTE During installation rotary switch SW3 can be in any position except 7 LPBK LPBK isreserved for special testing functions SLC 5 The U BRITE III plugs into a single SLC 5 channel slot Because two time slots are assigned to each physical slot in a SLC 5 channel bank and a U BRITE III provisioned as 2B D requires three time slots there are restrictions that apply to the physical placement of the U BRITE III in the channel bank Each SLC 5 digroup consists
5. ADRAN Section 61102040L4 5B Issue 2 January 2001 CLEI Code 5SC597IF__ SLC 5 U BR1TE lll w PWR and DDS Loopbacks ISDN 2B1Q Interface Installation and Maintenance CONTENTS 1 GENERAD sisson nsise e 1 2 INSTALLATION ssena an a a G 3 3 TESTING veicina eaaeo arsa Giang beans 8 4 MAINTENANCE sssiirissinsoeesusicirissresesiiessisiedisesecdntirerabeia 13 5 WARRANTY AND CUSTOMER SERVICE ose 13 FIGURES Figure 1 ADTRAN SLC 5 U BRITE II eects 1 Figure 2 SLC 5 U BRITE Slot Placement Examples 3 Figure 3 Backplane Pin Assignment ccc eeeeseeeeeeeeeeeee 4 Figure 4 SW1 and SW2 Labeling oo eeeeeeeeeneeeeees 4 Figure 5 Position Switch Settings at Network Locations for ISDN Applications sissies issieieccurisesssausttienscaveisace 6 Figure 6 SLC 5 U BRITE MI IDSL DDS Circuit Diagram 7 Figure 7 IDSL DDS Loopback Response cceeeeeeeeeeees 11 Figure 8 ADTRAN U BRITE Bidirectional Loopback 11 Figure 9 IDSL DDS Remote End Initiated Loopback Local ME QOD eas ecs a r ERE sess E 12 Figure 10 IDSL DDS Remote End Initiated Loopback Customer Oop ssicaiasivctides shinier ies GE 12 Figure 11 IDSL DDS Trouble Codes scsecessercessseeeees 13 TABLES Table 1 SLC 2000 CIT Provisioning Options cece 3 Table 2 Internal Switch Option Settings ee eeeeeeeeee 5 Table 3 Rotary Switch Legend css see sesssssctesiesauazsssstsvinices ed 8 Table 4 Front Panel LED
6. Indication 0 ee eeeeeereeeees 9 1 GENERAL This practice provides installation and maintenance information for the ADTRAN SLC 5 U BRITE III w PWR and DDS Loopbacks U BRITE HI Figure 1 is an illustration of the unit The 1102040L4 is a direct replacement and fully compatible with the previous ADTRAN SLC 5 U BRITEs including the 1100040L1 1100040L3 1102040L2 and the 1102040L1 ISDN DDS The U BRITE UI employs features for both ISDN and DDS transport ISDN comprises the major functionality and is described in this section A description of DDS functionality is located in Section 3 Revision History This document has been revised to correct switch SW1 5 function described in Table 2 ADR UBRITE Ill o20dees AC SW2 Figure 1 ADTRAN SLC 5 U BRI1TE III Functional Description The U BRITE III is a channel unit for use in the AT amp T SLC Series 5 and Series 2000 Digital Loop Carrier Systems The SLC 5 U BRITE II w PWR and DDS Loopbacks combines the functionality of a standard SLC 5 U BRITE HII and a U Repeater Powering Module which will simplify the installation of the U Repeater when deployed from a Digital Loop Carrier DLC facility Span powering also allows deployment of 2 wire DDS when an IDSL OCU R is used to terminate the ISDN local loop This eliminates the need to provide AC power at the customer premises The U BRITE II can be used in S
7. LC 5 Central Office Terminal COT deployed as Feature Package C FPC and SLC 5 Remote Terminals RT deployed as Feature Package C without Autocut FPC AC and Feature Package B The U BRITE HI will also operate in SLC 2000 COTs and RTs when deployed as SLC Mode 1 Clear Channel capability B8ZS is not required of the T1 facility if zero byte substitution ZBS is enabled on the U BRITE III The U BRITE III plugs into a single physical slot of the channel bank Three time slots are required for 61102040L4 5B Trademarks Any brand names and product names included in this document are trademarks registered trademarks or trade names of their respective holders transport of 2B D information Block error rate performance over the T1 facility is monitored and is available to the network The SLC 5 U BRITE III incorporates a feature that allows for detection of ISDN capable and non ISDN capable SLC 5 Bank Controller Units BCU In addition the unit will facilitate communications to the non ISDN capable BCU for the time slots associated with the adjacent physical slot eliminating the need for the NULL Channel Unit P N 1200102L1 in the non ISDN SLC 5 terminals Earlier versions of the SLC 5 BCU will not recognize an ISDN channel unit ID and will not assign the required time slots of the next physical position for 2B D operation For previous versions of the SLC 5 U BRITE a NULL Channel Unit which communicates to the non ISDN cap
8. N ERS EL Zi A COT g y w Beak faq 012345 NI ma 4 oH swt g2 Figure 4 SW1 and SW2 Labeling Section 61102040L4 5 Issue 2 61102040L4 5B Table 2 Internal Switch Option Settings Periodic wake up tone provided Switch Label Function Description SWI 1 Bl Service Level Selection Selects the service level The U BRITE III may be SW1 2 B2 optioned to deliver full ISDN 2B D or any of the SW1 3 D following levels of service Service Type Service SW1 1 SW1 2 SW1 3 yP Option B1 B2 D ISDN 2B D On On On Leased 128 kbps 2B On On Off ISDN DDS B1 D On Off On ISDN B2 D Off On On DDS Leased Bl On Off Off Leased B2 Off On Off ISDN D Off Off On SW1 4 In 2B D B1 D or B2 D the ZBS option must be set the same On ZBS EN Enables ZBS for the COT and RT SW1 4 should be set toward ZBS ENA for AMI provisioned carriers The switch setting is optional for Off ZBS DIS Disables ZBS B8ZS provisioned carriers In non D channel modes ZBS must be disabled when DDS service rate is 64 kbps or 56 kbps with secondary channel Consult local provisioning guidelines SW1 5 Off NORM Normal No powering provided toward the customer U interface On POWER Powering provided toward Automatically determines which of the following modes of the customer U interface operation is
9. R1TES when optioned for 1B D or 2B D e Pass OCU loopback code through to loop the IDSL OCU R e Pass CSU loopback code through to loop the CSU DSU and simultaneously send a remap to the NT1 eoc address e Transmit Mux out of Sync MOS upstream in B1 during DSL loop open loss of signal or loss of sync condition e Returns Abnormal Station Code ASC to the network in B1 during loopback conditions initiated by the IDSL OCU R Common Features e ISDN 2B D interface which meets all Layer 1 requirements as specified in ANSI T1 601 1992 e 18 kft nominal range on mixed gauge wire 42 dB 40 kHz loop loss 1300 Q DC resistance design e All Layer 1 maintenance functions e Performance monitoring of the Layer 1 facility as specified in TR NWT 000397 e A distinctive metallic DC test signature to identify either Line Unit Loop Termination LULT or Line Unit Network Termination LUNT mode of operation as specified in TR NWT 000397 e DSO logic level transmit and receive data access through the front panel RJ 45 jack e Loop carrier and synchronization status available at the front panel e Compatible with AT amp T SLC 2000 SLC Mode 1 e Compliant with TR TSY 829 TR TSY 1089 FCC Part 15 Class A and UL 1459 ADTRAN has obtained the necessary licenses that grant the right to develop a SLC 5 U BRITE II The ADTRAN U BRITE III replaces the AT amp T AU92 COT and AU93 RT BRITE channel units The U BRITE III TR 3
10. Sync X0011010 upstream towards the network X Denotes Don t Care bit either a 1 or a 0 Disabling DSO DP OCU or CSU latching loopback sequence 1 Minimum sequence of 35 TIP bytes Front Panel Tests The valid front panel tests in leased modes are ADR1 CRTX LPTX and LPBK for all circuit positions NT1 ADR1 ADR6 loopback tests are valid for the LULT mode only ADR2 would be used to test a U Repeater or ADR2 and ADR3 would be used to test TRISDN elements respectively Initiate Loopback at IDSL OCU R When used for DDS the SLC 5 U BRITE may initiate a loopback at the IDSL OCU R The in band latching OCU loopback code is sent to loop the IDSL OCU R when the NT1 address is selected on SW3 To invoke the OCU loopback at the IDSL OCU R the front panel test knob must be in the NT1 address location ADTRAN U BR1TE Bidirectional Loopback In LULT mode the ADTRAN U BRITE will execute a bidirectional loopback when performing DSO DP loopback Refer to Figure 8 for an illustration of the bidirectional loopback ADTRAN U BR1TE DE Bidirectional loopback IDSL OCU R Test Set Figure 8 ADTRAN U BR1TE Bidirectional Loopback 61102040L4 5B Section 61102040L4 5 Issue 2 11 Remote End Initiated LBK Tests The U BRITE supports loopbacks generated from the IDSL OCU R which allow testing to be performed without coordination with the CO or test center Loopbacks initiated
11. able BCU is required to reserve the associated time slots for 2B D service By automatically determining the version and requesting the necessary time slots for the non ISDN capable BCUs the U BRITE III eliminates the confusion regarding 2B D deployment and the requirement of deploying the NULL Cards The U BRITE III will operate properly when a NULL Card is installed in the adjacent physical slot as in a replacement situation Features U BRITE III features support both ISDN and DDS plus features common to both as listed here ISDN Features e Span powers U repeaters with 43 mA 28 to 120 Vdc for ISDN applications e Provides for the transport of ISDN Basic Rate 2B D information over T1 facilities in the 3 DSO format specified in TR NWT 000397 e NULL card not required with non ISDN BCUs e B1 or B2 loopback addressability at the faceplate for the NT1 and up to six devices in the Network to Customer direction e Compatible with MLT 3 0 ISDN per TR NWT 000397 Issue 3 December 1993 DDS Features e Span powers an IDSL OCU R with 12 mA 120 Vdc for DDS applications e Perform bidirectional loopback loop and network when commanded into DSO DP loopback from the network direction only e Loopback release in response to TIPs generated from the network direction per TR62310 e Remap all subsequent DSO DP loopback codes into respective eoc loopbacks to loopback respective downstream U Repeaters TRISDN elements and U B
12. aditional DDS methods In this mode U BRITE IIs may be placed in tandem and function as DSO DPs while the IDSL OCU R functions as an OCU See Figure 6 for various U BRITE III DDS arrangements DDS Testing For leased mode or DDS applications with the U BRITE III the D channel is typically disabled Without the D channel standard ISDN eoc loopbacks are unavailable to the ISDN transport system and testing may only be accomplished by using the in band DDS loopback commands The U BRITE III responds to latching loopback sequences for the DSO DP The U BRITE III allows the OCU loopback command to pass inband downstream to the IDSL OCU R Upon receipt of a DSO DP latching loopback sequence the U BRITE III initiates a bilateral loopback for the B1 channel This bilateral loopback allows testing of the 2B1Q local loop to the IDSL OCU R simultaneously with network testing to the U BRITE III 10 Section 61102040L4 5 Issue 2 61102040L4 5B DSO DP Loopback eoc Remapping Upon receipt of subsequent DSO DP loopback codes when the D channel is disabled the U BR1ITE HI remaps the subsequent DSO DP loopback sequences into the respective ISDN eoc loopback messages This capability will permit all downstream ISDN D channel enabled U BRITEs U Repeaters and TRISDN elements to respond to standard DDS DSO DP loopback commands via the ISDN eoc as shown in Figure 7 U BR1ITE 1B 1B D aid en l l T l oa
13. anel provides local test capabilities for use with industry standard Digital Logic Test Sets such as the TPI 108 109 or equivalent testers Available tests include a local loopback loopback of up to 5 addressable downstream ISDN devices loopback of the customer s NT1 and point to point testing in both the upstream and downstream directions NOTE When aU BRITE III is performing a loopback the loopback occurs internal to the U interface transceiver Loopback Tests Loopbacks in the network to customer direction can be initiated from either the ISDN switch or the front panel Front panel initiated loopbacks are non obtrusive to unused channels thereby preventing synchronization loss or dropouts on the carrier or loop while testing From the RJ 45 jack on the front panel a DSO digital test set is used to inject the required 64 kbps test pattern into the B1 or B2 channel The address select knob determines the downstream element to be looped back and the direction of rotation of the knob selects which channel is to be looped back Clockwise CW rotation selects the B1 channel and counterclockwise CCW rotation selects the B2 channel To initiate a loopback perform the following procedure 1 Connect the DSO tester to the RJ 45 jack 2 Rotate the address select knob in the direction associated with the desired loopback channel until the desired downstream element address is reached see Table 3 The LEDs indicate successful
14. appropriate e Supply a constant 43 mA to power an ADTRAN ISDN U Repeater II U Repeater III or IDSL DDS R e Supply a constant 120 Vdc to power an ADTRAN IDSL OCU R SW2 1 Termination Mode This switch should be set toward LULT when the unit is On LULT RT LULT Mode RT typical installed as Adjacent to U Repeater Adjacent to Customer or Tandem Office Source configuration This switch Off LUNT COT LUNT Mode COT should be set toward LUNT for Adjacent to Switch and Tandem Office Sink configurations See Figure 5 SW2 2 LULT Mode SW2 1 On In the LULT RT mode SW2 2 controls sealing current On ADJ DC sealing current provided When used in an Adjacent to Customer configuration sealing current should be provided SW2 2 On Ina Off TANDEM DC sealing current not Tandem Office Source sealing current is not required and provided should be disabled SW2 2 Off See Figure 5 On ADJ LUNT Mode SW2 1 Off In the LUNT COT mode SW2 2 controls periodic wake Periodic wake up tone not up tone Periodic wake up tones should be disabled when provided located in an Adjacent to Switch location SW2 2 On Off TANDEM Periodic wake up tones are required SW2 2 Off when located in a Tandem Office Sink configuration or when adjacent to a device requiring wake up tones such as a Newbridge switch See Figure 5 Note Power option should only be used in the LULT RT configuration Factory Setting 61102040L
15. by the OCU R front panel LBK pushbutton aid in system turn up testing or troubleshooting from the remote end The U BRITE responds to a loopback command initiated at the OCU R as follows Pressing the OCU R LBK pushbutton once will initiate a loopback at the U BRITE towards the customer See Figure 9 This allows data to be sent from the remote end to test the local loop and the IDSL OCU R This loopback is indicated by a flashing CUST LBK LED on the IDSL OCU R and a solid LBK LED on the U BRITE Pressing the OCU R LBK pushbutton a second time initiates a loopback at the OCU R towards the 4 wire DDS CPE interface A solid CUST LBK LED on the IDSL OCU R indicates a loopback at the IDSL OCU R towards the customer equipment See Figure 10 Pressing the OCU R LBK pushbutton a third time disables all current latching loopbacks initiated by the LBK pushbutton If errors exist the loopbacks can help determine the source either the local loop or the IDSL OCU R During a remote end initiated loopback the IDSL DDS system transmits ASC 9Eh towards the network indicating an out of service condition generated by the remote end as shown in Figures 9 and 10 All IDSL DDS system latching loopbacks whether initiated by the IDSL OCU R craft interface LBK pushbutton CO or from a remote Test Center may be released by sending 35 DDS loop down TIP bytes lt X0111010 gt Where X is a don t care bit All existing latching loopbacks may a
16. cting the ADR7 position This will cause the unit to reset and return to normal operation test Table 4 Front Panel LED Indication LED Color Indication LP Loop Amber Green Off Synchronization over the loop has not been achieved Solid in response to a 2B D loopback Flashes once per second for B1 twice per second for B2 in response to an eoc loopback from the loop side and during DSO logic test when the remote unit has successfully looped over the loop side or in LPTX or CRTX testing Synchronization over the loop has been achieved No loopbacks or tests are in progress CR Carrier Amber Green Off Synchronization over the carrier has not been achieved Solid in response to a 2B D loopback Flashes once per second for B1 twice per second for B2 in response to an eoc loopback from the carrier side and during DSO logic test when the remote unit has successfully looped over the carrier side or in LPTX or CRTX testing Synchronization over the carrier has been achieved No loopbacks or tests are in progress LP and CR Amber flashing Green flashing U BRITE II channel unit has violated the physical slot restrictions or is not provisioned correctly BCU has been removed from service or the U BRITE II is in special test mode refer to Local Loopback subsection CR only Amber flashing The channel bank has informed the U BRITE II that a network or trunk alarm
17. h settings or the unit may not operate properly Table 1 SLC 2000 CIT Provisioning Options Option SLC 2000 COT SLC 2000 RT CLEI S5SCIJE 5SC1HE Function BRI BRI Code Service 2B D B1 D 2B D B1 D B2 D D B2 D D BRI Basic Rate Interface 61102040L4 5B Section 61102040L4 5 Issue 2 NOTE When the U BR1ITE II is optioned for B1 or B2 the SLC 2000 slot must be provisioned for D only If the U BRITE III is optioned for 2B then the SLC 2000 slot must be provisioned for B1 D Physical Requirements The U BRITE III occupies one physical slot in the SLC 5 or SLC 2000 channel bank The backplane pin assignments are illustrated in Figure 3 RING TIP OOOOQO L OOO POOOOOOOO OOOOO OOOO O O OOOO O O OOOOO RG FRGRD 1 48 V 2B1Q Signal Terminal Figure 3 Backplane Pin Assignments Interface Requirements The U BRITE III unit includes two interfaces The loop side interface is an ISDN U interface which is used to deliver Basic Rate service The carrier side interface is a SLC 5 or SLC 2000 channel bank interface which is used to insert data into the 1 544 Mbps T1 stream Only the polarity insensitive Tip and Ring leads are used in the cross connection Switch Option Settings See Figure 1 and Figure 4 for SW1 and SW2 location The options for SW1 and SW2 are described in Table 2 I u f Swe LUNT TANDEM e
18. its Abnormal Station Code ASC 9Eh upstream into the network as shown in Figure 11 4 MAINTENANCE The U BRITE III does not require routine maintenance for normal operation 5 WARRANTY AND CUSTOMER SERVICE ADTRAN will replace or repair this product within 10 years from the date of shipment if it does not meet its published specifications or fails while in service see ADTRAN Carrier Networks Equipment Warranty Repair and Return Policy and Procedure document 60000087 10 Contact Customer and Product Service CAPS prior to returning equipment to ADTRAN For service CAPS requests or further information contact one of the following numbers ADTRAN Sales Pricing Availability 800 827 0807 ADTRAN Technical Support Presales Applications Postsales Technical Assistance 888 4 ADTRAN Standard hours Monday Friday 7 a m 7 p m CST Emergency hours 7 days week 24 hours day ADTRAN Repair CAPS Return for Repair Upgrade 256 963 8722 Repair and Return Address ADTRAN Inc CAPS 901 Explorer Boulevard Huntsville Alabama 35806 2807 Channel Bank Open 2 wire Loop MOS 9Ah lt Customer Premises Channel Bank ASC 9Eh ASC 9Eh lt IDSL OCU R DSU Customer Premises Open 4 Wire Customer iapa IDSL OCU R DSU Figure 11 IDSL DDS Trouble Codes 61102040L4 5B Section 61102040L4 5 Issue 2 14 Section 61102040L4 5 Is
19. loopback activation according to Table 4 3 Data is looped back at the selected address until the jack is disconnected or the address select knob is changed Point To Point Test CRTX LPTX Point to point testing using a DSO digital tester can be performed to either the T1 carrier interface SW3 position 8 or the U interface SW3 position 9 Section 61102040L4 5 Issue 2 61102040L4 5B To initiate a point to point test perform the following pi Connect the DSO digital tester to the RJ 45 jack 2 Configure the test set for Near Logic and 64kbps Ww Select the desired test direction and bearer channel using the address select knob 4 If the far end unit is a SLC 5 U BRITE III perform steps 1 3 choosing the same front panel selections Ensure both test sets are configured for the same test pattern 511 2047 If the far end is another device follow the appropriate directions to provide a point to point Nn Local Loopback The U BRITE III incorporates a special test mode to provide a local 2B D bilateral loopback Once invoked this test allows an upstream and downstream test set to send a straight away test pattern To put the U BRITE III into this test mode select ADR7 on the address select knob and insert the channel unit into the channel bank The CR and LP LEDs will flash GREEN once the U BRITE III is in this special mode To discontinue the special test mode turn SW3 in either direction desele
20. lso be disabled by pressing the LBK pushbutton on the CO or remote unit NOTE The remote end test feature is only supported when the upstream U BRITE is an ADTRAN D4 or Series 5 U BRITE with DDS Loopback capability Other U BRITEs will ignore the loopback command sent by pressing the IDSL OCU R LBK button SLC 5 U BRIiTE ASC 9Eh aS Local Loop 4 Wire CPE Interface IDSL OCU R Loopback Pushbutton Push once for SLC 5 U BR1TE Loopback Figure 9 IDSL DDS Remote End Initiated Loopback Local Loop ASC 9Eh ASC 9Eh Local Loop IDSL OCU R Loopback Pushbutton Push twice for IDSL OCU R Loopback 4 Wire CPE Interface Figure 10 IDSL DDS Remote End Initiated Loopback Customer Loop 12 Section 61102040L4 5 Issue 2 61102040L4 5B IDSL DDS Trouble Code The IDSL DDS system provides a quick diagnosis in the case of a circuit condition where continuity is broken The trouble code type received by a tester determines whether the open condition is occurring on the local loop or at the customer premises In the event of a 2 wire DSL loss of signal loss of sync or open condition caused by an open conductor or disconnected 2 wire loop the SLC 5 U BRITE III transmits a Mux Out of Sync trouble code MOS 9Ah into the network as shown in Figure 11 During a similar out of service condition at the customer premises the IDSL OCU R transm
21. of 12 physical slots which can be divided into four groups of three slots each physical slots 1 3 4 6 7 9 and 10 12 These tri slot groups are used to define the slot restrictions for the U BRITE III as follows see Figure 2 e A U BRITE III provisioned as 2B D cannot be installed in the last slot of a tri slot group slots 3 6 9 or 12 e A U BRITE III provisioned as anything other than 2B D cannot be installed in the physical slot to the immediate right of a U BRITE HI provisioned as 2B D within a tri slot group I 2B D 2B D Empty 1 2 3 Available II 2B D Empty for Other Services 4 5 6 Available Il for Other 2B D Empty Services 7 8 9 1B D 1B D Available IV or or for Other 2B 2B Services 10 11 12 Figure 2 SLC 5 U BR1TE Slot Placement Examples SLC 2000 The U BRITE II operates in all SLC 2000 COT and RT shelves and can be used in combination with any mix of other SLC 2000 channel units Currently the unit will not operate in a mode 2 shelf All option information for SLC 2000 channel units is entered using the SLC 2000 Craft Interface Terminal CIT and stored in the controller s nonvolatile system memory Once a slot is provisioned it does not need to be provisioned again unless a different channel unit is installed in that slot Table 1 lists the options to set for the U BRITE III The service provisioned should match the switc
22. pon receipt by the LULT of this mp eoc message the following events occur 1 The channel unit informs the bank controller of a test request 2 Upon completion of handshaking with the channel test equipment the bank controller commands the channel unit to close its channel test relay This has the effect of connecting the customer drop to the common equipment through LPTT and LPTR and the channel unit U interface to CHTT and CHTR The test setup sequence is complete ie Upon completion of the automatic test the channel unit is commanded by the bank controller to de energize the channel test relay 4 Upon reception of the Return to Normal mp eoc message the channel unit begins re synchronization of the U interface between the LULT and the NT1 Performance Monitoring TR829 The U BRITE II supports performance monitoring remotely from the ISDN switch IDSL DDS Description The U BRITE III may be deployed in the adjacent to customer mode to provide transport for DDS Frame Relay services with an ADTRAN IDSL OCU R This allows pair savings over traditional DDS deployment on local loops up to 18 kft on mixed gauge wire The IDSL OCU R is used to terminate the U interface at the customer premises provided by the U BRITE HI and to convert the 2 wire ISDN signal to a 4 wire AMI DDS signal for presentation to the customer Together the U BR1TE II and IDSL OCU R allow testing over the ISDN transport network to be performed with tr
23. sue 2 61102040L4 5B
24. t panel of the U BRITE II report the synchronization and loopback status Descriptions of these LEDs are given in Table 4 The SLC Series 5 COT must be externally timed from a suitable composite clock with stratum one traceability 3 TESTING The U BRITE II responds to embedded operation channel loopbacks including B1 B2 and 2B D when configured for D channel operations Table 3 Rotary Switch Legend Display Name Interpretation 0 NTI NT1 address of the NT1 latching OCU in DDS mode 1 ADRI Address 1 address of this unit 2 ADR2 Address 2 the next downstream unit away 3 ADR3 Address 3 the second unit downstream 4 ADR4 Address 4 the third unit downstream 5 ADR5 Address 5 the fourth unit downstream 6 ADR6 Address 6 the fifth unit downstream 1 LPBK Loopback forces this unit to loopback the selected B1 or B2 channel Loopbacks occur in both the customer and network directions 8 CRTX Carrier transmit in the carrier direction 9 LPTX Loop transmit in the loop direction Clockwise rotation selects the B1 channel Counterclockwise rotation selects the B2 channel Factory Default Setting Reserved for special testing When used in B1 configuration non D channel modes of operation the U BRITE III will respond to an in band DSO DP latching loopback sequence When remote testing is not available or during troubleshooting the U BRITE III front p
25. witch settings at IDSL DDS network locations D4 b SLC 5 A a a Ta 1 oun Digital c D rea E 4W DSO DP W DSO DP Loo a or oer 1 4wosopp ta UBRITE H e pet acute OCU DP DCS or DCS 1B _ COT RT D4 D4 SWe 1 LULT 2 ADJ swi T B1 2 OFF 3 OFF 4 OFF 5 PWR A Non ADTRAN U BR1TE 1B D B 2W i CE oe 2 Wire E 4W DSO DP x RNE Digital l UBRE TAs ocupp i 1B i Bp mmm UBRITE f IDSL OCU R H 1BD H D4 COT RT e Customer A Premises gt Customer A Premises 1102040L4 Equipment Requirements per RFP 99 7235 CS E Requires local AC power C Must be 1102040L4 w power disabled or 1102040L3 D Must be 1102040L4 w power enabled B Must be 1104020L4 w power disabled or 1104020L5 C Must be 1102040L4 w power disabled or 1102040L3 No SLC 5 U BR1TEs are used in a non SLC 5 DLC DDS Application NOTE Refer to Table 2 for DIP switch function descriptions Figure 6 SLC 5 U BR1TE Ill IDSL DDS Circuit Diagram 61102040L4 5B Section 61102040L4 5 Issue 2 Front Panel Features The RJ 45 jack allows front panel test access for local or downstream loopbacks The address select knob SW3 determines which element is being looped back Table 3 lists the loopback options Three LEDs on the fron
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