ADTRAN T200 Installation And Maintenance Manual
ADTRAN T200 Installation And Maintenance Manual

ADTRAN T200 Installation And Maintenance Manual

Low-voltage htu-r with monitor jack high-bit-rate digital subscriber line remote unit

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T200 Low-Voltage HTU-R with Monitor Jack
High-bit-rate Digital Subscriber Line Remote Unit
CONTENTS
1. GENERAL ........................................................................... 1
2. INSTALLATION ................................................................ 2
3. CONNECTIONS ................................................................. 4
4. HDSL SYSTEM TESTING ................................................ 5
5. CONTROL PORT OPERATION ....................................... 6
6. HDSL DEPLOYMENT GUIDELINES ............................ 14
7. TROUBLESHOOTING PROCEDURES ......................... 15
8. MAINTENANCE .............................................................. 15
9. PRODUCT SPECIFICATIONS ........................................ 15
10. WARRANTY AND CUSTOMER SERVICE .................. 15
Appendix A. HDSL Loopbacks ........................................... A-1
Figures
ADTRAN T200 Low Voltage HTU-R ................. 1
P1 Jumper Location .............................................. 4
HTU-R MON Diagram ......................................... 5
HDSL Loopbacks .................................................. 5
RS-232 (DB9) Pin Assignments ........................... 6
Introductory Menu Screen .................................... 9
HDSL Main Menu Screen ..................................... 9
Current System Status Screen ............................. 10
Performance History Screen ............................... 11
Figure 10. Loopback Options Screen ................................... 12
Figure 11. Self-Test Options Screen .................................... 12
Figure 12. Provisioning Screen ............................................ 13
Figure 13. Troubleshooting Display ..................................... 13
Figure 14. Alarm History Screen .......................................... 14
Figure 15. Set Time/Date/Circuit ID Screen ........................ 14
Figure 16. HDSL Deployment Guidelines ........................... 15
Figure A-1. HDSL Loopback Points .................................... A-1
Figure A-2. HDSL Element State Diagram .......................... A-2
Tables
Table A.
UL/CUL Telecommunications Codes .................... 2
Table B.
Front Panel Indicators ............................................. 3
Table C.
Front Panel Loopbacks Switches ........................... 3
Table D.
Card Edge Pin Assignments ................................... 4
Table E.
Screen Abbreviations .............................................. 7
Table F.
HDSL Loss Values ............................................... 14
Table G.
Loop Insertion Loss Data ..................................... 14
Table H.
Troubleshooting Guide ......................................... 15
Table I.
ADTRAN T200 Low Voltage HTU-R
Specifications ........................................................ 16
Table A-1. Standard Loopback Control Codes .................... A-3
Table A-2. HDSL Loopback Control Codes ........................ A-5
Table A-3. Inband Addressable Loopback Codes ................ A-6
61246026L6-5B
Installation and Maintenance
Trademarks: Any brand names and product names included in this document are
Section 61246026L6-5, Issue 2
trademarks, registered trademarks, or trade names of their respective holders.
H
LP 1
D
S
L
LP 2
D S 1
A LM
E S F
(YE L)
S F
(GR N)
B 8Z S
(YE L)
A M I
(GR N)
LB K
LO C
LB K
R E M
CU ST
MO N
T X
R X
Figure 1. ADTRAN T200 Low Voltage HTU-R
1. GENERAL
The ADTRAN T200 Low Voltage HDSL Unit for
the Remote end (HTU-R), ADTRAN part number
1246026L6, is a network terminating unit used to
deploy an HDSL T1 circuit using 4-wire metallic
facilities. The HTU-R is a T200 mechanics card
which will fit any T200 or T400 mechanics
enclosure. This includes the ADTRAN standalone
metal enclosures (P/Ns 1242034LX), the ADTRAN
HR12 HDSL remote shelf (P/N 1242007LX), or the
ADTRAN HR4 HDSL remote shelf (P/N
1242008L1). Refer to appropriate ADTRAN
practices for more information.
This version of the HTU-R works with multiple list
versions of the HDSL transceiver unit for the central
office (HTU-C), and HDSL Range Extenders
(HREs) as listed on the next page.
Section 61246026L6-5B
Issue 2, September 1999
CLEI Code #T1L3K7WA_ _
1

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Summary of Contents for ADTRAN T200

  • Page 1: Table Of Contents

    1. GENERAL Figure 14. Alarm History Screen .......... 14 Figure 15. Set Time/Date/Circuit ID Screen ......14 The ADTRAN T200 Low Voltage HDSL Unit for Figure 16. HDSL Deployment Guidelines ......15 the Remote end (HTU-R), ADTRAN part number Figure A-1. HDSL Loopback Points ........A-1 1246026L6, is a network terminating unit used to Figure A-2.
  • Page 2 HTU-C. The settings on the The effective range of an ADTRAN HDSL-based HTU-C are encoded and transmitted to the HTU-R T1 circuit can be extended using the ADTRAN once the circuit has achieved synchronization. As HDSL Range Extenders (HREs). An HRE can...
  • Page 3 Front Panel Indicators DS1 Tx Level Setting There are seven front-panel-mounted status The DS1 Tx Level is controlled by a jumper (P1) on indicators. Each indicator is described in Table B. the HTU-R card, as illustrated in Figure 2. The available settings are 0dB and -15dB.
  • Page 4: Connections

    4. HDSL SYSTEM TESTING 38 ..PROT-2 ..Control line for protection switching 40 ..PROT-1 ..Control line for protection switching The T200 HTU-R provides diagnostic, loopback, 41 ..H2-T ..... HDSL Loop 2 tip (facility) and signal monitoring capabilities.
  • Page 5: Figure 3. Htu-R Mon Diagram

    HTU-R internal HDSL transceiver. See Figure 4. First, manual loopback activation may be accomplished using the control port of the HTU-C. Refer to the ADTRAN HTU-C Installation and Maintenance practice (P/N 61246001LX-5) or other HTU-C practices for more information. 61246026L6-5B...
  • Page 6: Control Port Operation

    The screens illustrated in Figures 6 through 15 apply front panel of the HTU-R. The LOC LBK switch to an HDSL circuit deployed with ADTRAN’s Low enables a bilateral loopback. The HTU-C can be Voltage HDSL technology. The circuit includes an looped to the customer using the REM LBK switch HTU-C, HTU-R, and two HREs.
  • Page 7 1. Current System Status transferred into the 24-hour performance data 2. Performance History register also accessed using the Performance History 3. ADTRAN Information screen. The Performance History screen is 4. Loopback Options illustrated in Figure 9. Type “H” to view the 5.
  • Page 8 LOSS is typically several dB less than the insertion loss measured at 200 kHz. The LOSS measurement is a better indication of the loop’s attenuation of the 2B1Q signal than the insertion loss measured at a single frequency. Adtran HDSL can operate on cables with an excess of 30 dB LOSS.
  • Page 9: Figure 6. Introductory Menu Screen

    AT HTU-C AT HTU-R Press “M” to view Main Menu. Figure 6. Introductory Menu Screen CIRCUIT ID: 01/01/99 00:09:42 ADTRAN HDSL MAIN MENU 1) CURRENT SYSTEM STATUS 2) PERFORMANCE HISTORY 3) ADTRAN INFORMATION 4) LOOPBACK OPTIONS 5) SELF-TEST 6) PROVISIONING...
  • Page 10: Figure 8. Current System Status Screen

    CIRCUIT ID: 01/01/99 00:10:04 LOOP #1 <NETWORK> LOOP #2 CURRENT SYSTEM STATUS LOOP #1 <CUSTOMER>LOOP #2 ———— HTU-C ———— ———— HTU-R ————- 29(29) dB 29(29) dB <- LOSS CUR(MAX) -> 29(29) dB 30(30) dB <- SYNC -> 000/00000 000/00000 <- 15M/24H ->...
  • Page 11: Figure 9. Performance History Screen

    CIRCUIT ID: 01/01/99 00:10:33 24 HOUR REGISTERS PERFORMANCE HISTORY 15 MINUTE REGISTERS —ES---—SES—--UAS— —ES-SES-UAS——-----——ES-SES-UAS- 00000 00000 00000 <---CURRENT---> 000 000 000 12/31 ----- ----- ----- <-- HISTORY --> 00:00 --- --- --- 20:00 --- --- --- 12/30 ----- ----- ----- 23:45 --- --- --- 19:45 --- --- --- 12/29 ----- ----- -----...
  • Page 12: Figure 10. Loopback Options Screen

    CIRCUIT ID: 01/01/99 00:11:09 LOOPBACK OPTIONS _____ _____ _____ _____ |HTU-C| |HRE 1| |HRE 2| |HTU-R| --->|-----|<=====>|-----|<=====>|-----|<=====>|-----|<—- NET | | CUST <---|-----|<=====>|-----|<=====>|-----|<=====>|-----|—> |_____| |_____| |_____| |_____| 1) LOOPBACK TO NETWORK AT HTU-C = INACTIVE 2) LOOPBACK TO CUSTOMER AT HTU-C = INACTIVE 3) LOOPBACK TO NETWORK AT HTU-R = INACTIVE 4) LOOPBACK TO CUSTOMER AT HTU-R = INACTIVE...
  • Page 13: Figure 12. Provisioning Screen

    CIRCUIT ID: 01/01/99 00:11:47 PROVISIONING DSX-1 LINE BUILDOUT 399-533 FEET DSX-1/DS1 LINE CODE B8ZS DSX-1/DS1 FRAMING NIU LOOPBACK DISABLED LOOPBACK TIMEOUT NONE DS1 TX LEVEL 0 dB HTUC SHELF ALARM DISABLED DS0 BLOCKING (XX = BLOCKED): 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 * Option not configurable from this terminal The DS1 Output level can be configured using a strap on the circuit board of the HTU-R.
  • Page 14 CIRCUIT ID: 01/01/99 00:12:45 T1 Alarm History LOCATION ALARM FIRST LAST CURRENT COUNT -------------------------------------------------------------------------------- HTU-C RED(LOS) (DSX-1) YELLOW BLUE(AIS) HTU-R RED(LOS) (DS1) YELLOW BLUE(AIS) HDSL Span History -------------------------------------------------------------------------------- SPAN 1 LP1 HLOS LP2 HLOS HTU-C LP1 MRGN LP2 MRGN HRE-1 LP1 MRGN LP2 MRGN Press: C to clear history : H to scroll span alarms : M for main menu...
  • Page 15: Hdsl Deployment Guidelines

    6. HDSL DEPLOYMENT GUIDELINES Table F. HDSL Loss Values Ω (200 kHz cable loss in dB/kFt at 135 The ADTRAN HDSL system is designed to provide DS1-based services over loops designed to comply Cable Cable Temperature ° ° ° with Carrier Service Area (CSA) guidelines. CSA...
  • Page 16: Troubleshooting Procedures

    7. TROUBLESHOOTING PROCEDURES Return Material Authorization is required prior to returning equipment to ADTRAN. Use Table H to troubleshoot the ADTRAN HTU-R. For service, RMA requests, or further information, 8. MAINTENANCE contact one of the following numbers: The ADTRAN HTU-R requires no routine ADTRAN Customer Service: maintenance.
  • Page 17: Figure 1. Adtran T200 Low Voltage Htu-R

    Table I. ADTRAN T200 Low Voltage HTU-R Specifications Loop Interface Modulation Type ......2B1Q Mode ..........Full Duplex, Echo Cancelling Number of Pairs ......Two Bit Rate ..........784 kbps per pair Baud Rate ........392K baud per pair Service Range ........Defined by Carrier Service Area Guidelines Loop Loss ........
  • Page 18: Appendix Ahdsl Loopbacks

    The loopback capabilities of both the HRE and the This Appendix describes the use and operation of HTU-R loopback capabilities are controlled from the loopback control code sequences used in ADTRAN’s central office unit (HTU-C). HDSL system. Loopback control codes are governed by the HTU-C (and HRE(s) if deployed).
  • Page 19: Figure A-2. Hdsl Element State Diagram

    Loopback Process The unframed method produces periodic control In general, the loopback process for the HDSL system sequences, and the normal DS1 framing bit is omitted. elements is modeled on the corresponding DS1 system The overwrite method produces periodic control process.
  • Page 20 Table A-1. HDSL Standard Loopback Control Codes Code Name Detection Time Comments 11000 Arming (In-band) 5 Seconds Signal sent in-band or over ESF data link. HDSL 0001 0010 1111 1111 Arming (ESF) 4 Repetitions elements in disarmed state make transition to armed state.
  • Page 21 The disarming process ensures race-free operation of Duration of the deactivation sequence may need to HDSL element disarming and Smartjack loop-down. exceed 18 seconds to allow detection and loop-down Duration of the disarm sequence may need to exceed of up to three HDSL elements. The deactivation 24 seconds to allow detection and loop-down of up to sequence does not disarm the HDSL elements.
  • Page 22 2. Enhanced Loopbacks The overwrite method produces periodic control sequences. However, once per frame, the framing bit HDSL Maintenance Modes overwrites one of the bits in the control sequence. This subsection describes operation of the HDSL system with regard to detection of in-band and ESF The unit can detect the loopback activation or facility data link loopback codes.
  • Page 23 Table A-3. Inband Addressable Loopback Codes Function Code Response ARM ..............11000 The HTU-R will loopup towards the network. No AIS or errors will be sent (also known as as a result of this loopback. The HTU-C and HRE will ARM. a 2-in-5 pattern) DISARM ...............

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