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Section 61246001L2-5, Issue 2
61246001L2-5B
Section 61246001L2-5B
Issue 2, November 1999
CLEI Code #T1L3M4NA_ _
220/E220 HTU-C M
High-bit-rate Digital Subscriber Line
Transceiver Unit -- Central Office
Installation and Maintenance
Trademarks: Any brand names and product names included in this document are
trademarks, registered trademarks, or trade names of their respective holders.
1. GENERAL
The ADTRAN 220/E220 HDSL Transceiver Unit for
the Central Office (HTU-C M), part number
1246001L2, is the Central Office (CO) unit used to
deploy an HDSL T1 circuit using 4-wire metallic
facilities, and span power multiple HDSL elements.
The unit occupies one slot in a standard 220 Office
Repeater Bay or the ADTRAN E220 Shelf.
DSX-1 signals are provided to and received from the
network while 2B1Q HDSL signals are provided to
the local loop. The ADTRAN HTU-C M works in
conjunction with the ADTRAN HTU-R and HRE to
provide a DS1 service up to 36,000 feet on the local
loop.
This HTU-C M works with multiple list versions of
the HDSL unit remote end (HTU-R) and HDSL range
extender (HRE) as listed below:
Part Number
Description
1242004L2
HTU-R T400 CP
1242035L2
HTU-R SA
1242031L2
HRE
1244021L1
Low Voltage HTU-R T400
CP
Figure 1. ADTRAN HTU-C M
Contents
1. GENERAL ............................................................................... 1
2. INSTALLATION ...................................................................... 2
3. CONNECTIONS ...................................................................... 3
4. HDSL SYSTEM TESTING ..................................................... 5
5. CONTROL PORT OPERATION ............................................. 7
6. HDSL DEPLOYMENT GUIDELINES ................................. 18
7. TROUBLESHOOTING PROCEDURES .............................. 19
8. MAINTENANCE ................................................................... 19
9. PRODUCT SPECIFICATIONS ............................................. 19
10. WARRANTY AND CUSTOMER SERVICE ...................... 19
Appendix A. HDSL Loopbacks ................................................ A-1
Appendix B. DS0 Blocking ...................................................... B-1
Figures
Figure 1. ADTRAN HTU-C M.................................................... 1
Figure 2. HTU-C M Switch Arrangement .................................... 3
Figure 3. HTU-C M Edge Connector Wiring .............................. 6
Figure 4. HTU-C M Span Powering Diagram ............................ 6
Figure 5. HTU-C M Bantam Jack Arrangement ........................... 6
Figure 6. HDSL Loopbacks .......................................................... 7
Figure 7. RS-232 (DB9) Pin Assignments ................................... 7
Figure 8. Introductory Menu Screen .......................................... 11
Figure 9. HDSL Main Menu Screen ........................................... 11
Figure 10. Current System Status Screen ................................... 12
Figure 10A. Current System Status Screen - HRE ..................... 12
Figure 11. Performance History Screen ..................................... 13
Figure 11A. Performance History Screen - HRE ....................... 13
Figure 12. Loopback Options Screen ......................................... 14
Figure 13. Self Test Options Screen ........................................... 14
Figure 14. Provisioning Screen .................................................. 15
Figure 15. Troubleshooting Display ........................................... 15
Figure 16. Alarm History Screen ................................................ 16
Figure 17. Set Time/Date/Circuit ID Screen .............................. 16
Figure 18. Default Options Screen ............................................. 17
Figure 19. HDSL Deployment Guidelines .................................. 18
Figure A-1. HDSL Loopback Points ........................................ A-1
Figure A-2. HDSL Element State Diagram .............................. A-1
Tables
Table 1. UL/CUL Telecommunications Codes ............................. 2
Table 2. Front Panel Rotary Switch Option Setting1 ................... 4
Table 3. SW6 Option Settings1 .................................................... 4
Table 4. Front Panel Indicators ..................................................... 5
Table 5. Screen Abbreviations ...................................................... 8
Table 6. HDSL Loss Values ........................................................ 18
Table 7. Loop Insertion Loss Data ............................................. 18
Table 8. Troubleshooting Guide ................................................. 19
Table 9. HDSL 220/E220 HTU-C M Specifications ................... 20
Table A-1. HDSL Loopback Control Codes ............................. A-2
ON
TX
RX
TX
RX
LP1
LP2
DSX
ALM
LBK
B8ZS
FRM
ESF
NIU LB DIS
LBK TIM
EOUT DIS
AMI
UFRM
SF
EN
EN
H
D
S
L
M
O
N
E
Q
HTU-C
M
R
S
2
3
2
1246001
L2
133
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