Contents
1. GENERAL ............................................................................... 1
2. INSTALLATION ...................................................................... 2
3. CONNECTIONS ...................................................................... 3
8. MAINTENANCE ................................................................... 19
Figures
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
61246001L2-5B
Trademarks: Any brand names and product names included in this document are
trademarks, registered trademarks, or trade names of their respective holders.
220/E220 HTU-C M
High-bit-rate Digital Subscriber Line
Transceiver Unit -- Central Office
Installation and Maintenance
Section 61246001L2-5, Issue 2
CLEI Code #T1L3M4NA_ _
Figure 1. ADTRAN HTU-C M
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
Section 61246001L2-5B
Issue 2, November 1999
C M
H T U -
2
12 46 00 1L
13 3
0
26 6
EX T
39 9
53 3
AM I
B8 ZS
UF RM
FR M
SF
ES F
EN
NI U LB DIS
EN
EO UT DIS
LB K TIM
H
LP 1
D
TX
S
M
LP 2
O
L
N
RX
DS X
AL M
LB K
TX
E
Q
RX
R
S
2
3
2
1
Need help?
Do you have a question about the HTU-C M and is the answer not in the manual?
Questions and answers