ADTRAN Total Access 3000 - Page 44

6TASYS101-1E
TOTAL ACCESS 3000/3010
SYS-101
Page 38 of 46
Total Access
®
3000/3010 System Manual© 2003, ADTRAN, Inc.
An HDSL Transceiver Unit-Central Office (HTU-C) can be installed in the CO-
controlled environment. The HDSL Transceiver Unit-Remote (HTU-R) is installed at
or close to the customer’s premises. The HTU-R is span powered by the HTU-C. This
eliminates the need for remote power arrangements and provides for a more reliable
system (see Figure 19).
The HDSL2 configuration is identical to that of HDSL above, with the addition that
the HDSL Transceiver Unit-Remote (H2TU-R) can be locally powered as well as span
powered.
5.2.1.1 Range Extension (HDSL/HDSL2)
An HDSL Range Extender (HRE) and HDSL2 Range Extender (H2R) can extend the
range of the circuit from 12,000 feet to 24,000 feet (more than 4.5 miles) over 24
AWG wire. Like the HTU-R, the HRE is span powered by the HTU-C. The H2R is
also span powered by the H2TU-C, with the H2TU-R able to be locally powered.
HDSL/HDSL2
circuit
D
S
3
M
X
POWER
STATUS
TEST
LOC
KOUT
ON LINE
APS
TEST/
ENAB
LE
1
1
8
1
0
2
0
L
1
D
S
3
M
X
POWER
STATUS
TEST
LOCKOUT
ON LINE
APS
TEST/
ENABLE
1
1
8
1
0
2
0
L
1
S
C
U
FSE
M
ODE
SELECT
ALM
HST
ACO
C
R
A
F
T
ACO
1
1
8
1
0
1
5
L
1
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
A
CT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
A
CT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
A
CT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
A
CT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
U
N
I
T
1
1
81000
L1
P
W
R
D
S
X
T
X
E
Q
R
X
T
X
M
O
N
R
X
T
S
T
L
P
1
L
P
2
A
L
M
A
C
T
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
U
N
I
T
118100
0L
1
P
W
R
D
S
X
T
X
E
Q
R
X
T
X
M
O
N
R
X
T
S
T
L
P
1
L
P
2
A
L
M
A
C
T
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
Q
F
C
-C
D
S
X
P
W
R
D
S
X
D
S
X
T
S
T
A
L
M
A
C
T
A
P
S
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
1
1
8
1
3
0
0
L
1
D
S
X
#
2
#
3
#
4
#
1
Q
F
C
-C
D
S
X
P
W
R
D
S
X
D
S
X
T
S
T
A
L
M
A
C
T
A
P
S
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
1
1
8
1
3
0
0
L
1
D
S
X
#
2
#
3
#
4
#
1
Q
F
C
-
C
D
S
X
P
W
R
D
S
X
D
S
X
T
S
T
A
L
M
A
C
T
A
P
S
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
1
1
8
1
3
0
0
L
1
D
S
X
#
2
#
3
#
4
#
1
Q
F
C
-
C
D
S
X
P
W
R
D
S
X
D
S
X
T
S
T
A
L
M
A
C
T
A
P
S
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
1
1
8
1
3
0
0
L
1
D
S
X
#
2
#
3
#
4
#
1
H
D
-1
0
B
R
I
M
u
x
P
O
W
E
R
D
S
X
L
B
K
1
2
3
4
5
6
7
8
9
1
0
D
S
L
1
1
8
1
2
0
0
L
1
H
D
-1
0
B
R
I
M
u
x
P
O
W
E
R
D
S
X
L
B
K
1
2
3
4
5
6
7
8
9
1
0
D
S
L
1
1
8
1
2
0
0
L
1
H
D
-
1
0
B
R
I
M
u
x
P
O
W
E
R
D
S
X
L
B
K
1
2
3
4
5
6
7
8
9
1
0
D
S
L
1
1
8
1
2
0
0
L
1
H
D
-1
0
B
R
I
M
u
x
P
O
W
E
R
D
S
X
L
B
K
1
2
3
4
5
6
7
8
9
1
0
D
S
L
1
1
8
1
2
0
0
L
1
T
1
-O
R
P
W
R
D
S
X
L
B
K
L
P
A
L
M
T
X
R
X
6
V
+
–
A
P
S
T
X
M
O
N
A
C
T
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
R
X
1
1
8
1
3
1
0
L
1
T
1
-
O
R
P
W
R
D
S
X
L
B
K
L
P
A
L
M
T
X
R
X
6
V
+
–
A
P
S
T
X
M
O
N
A
C
T
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
R
X
1
1
8
1
3
1
0
L
1
T
1
-
O
R
P
W
R
D
S
X
L
B
K
L
P
A
L
M
T
X
R
X
6
V
+
–
A
P
S
T
X
M
O
N
A
C
T
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
R
X
1
1
8
1
3
1
0
L
1
T
1
-
O
R
P
W
R
D
S
X
L
B
K
L
P
A
L
M
T
X
R
X
6
V
+
–
A
P
S
T
X
M
O
N
A
C
T
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
R
X
1
1
8
1
3
1
0
L
1
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PWR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
ALM
A
CT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
Regenerator
HDSL/HDSL2
Remote
Total Access 3000/3010
Figure 19. HDSL / HDSL2 System Arrangement