6TASYS101-1E
TOTAL ACCESS 3000/3010
SYS-101
Page 44 of 46
Total Access
®
3000/3010 System Manual© 2003, ADTRAN, Inc.
5.2.4.1 Optical Characteristics
The QFO-C offers high performance single-mode 1310 nm laser optics and pin-diode
receivers in either 12 or 22 dB optical power budget configurations. The wide range
receivers accommodate even 0 dB optical loops without the need for external optical
attenuators.
5.2.5 Automatic Protection Switching
The Loop Support System (HLSS) provides 1:1 protection for the circuits. A T1,
HDSL, or HDSL2 module is provisioned as either the main unit or the auxiliary unit.
The Total Access 3000/3010 backplane is pre-wired to support this arrangement with
the odd-numbered slots designated the main circuit and the next higher even-numbered
slot designated the auxiliary circuit. The numerically linked labels on the front panel
easily identify these HLSS pairs. At the customer premises, two HTU-Rs, H2TU-Rs,
or T1 NIUs terminate the two circuits in the Loop Support System (LSS) housing and
provide a single protected circuit to the customer. See Figure 24.
2 HDSL/
HDSL2
circuits
ADTRAN
Loop
Support
System
D
S
3
M
X
PO
WER
S
TAT
US
T
EST
LO
CKO
UT
ON
L
IN
E
A
P
S
TES
T/
EN
ABL
E
1
1
8
1
0
2
0
L
1
D
S
3
M
X
POW
ER
S
TAT
US
TEST
LO
CK
OUT
ON LINE
A
P
S
TEST
/
EN
A
BLE
1
1
8
1
0
2
0
L
1
S
C
U
FS
E
M
O
DE
S
ELECT
ALM
H
ST
AC
O
C
R
A
F
T
AC
O
1
1
8
1
0
1
5
L
1
H
T
U
-
C
1
1
8
1
1
0
1
L
1
PW
R
D
SX
TX
E
Q
RX
TX
M
O
N
RX
TST
L
P1
LP2
A
LM
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
PW
R
D
SX
TX
E
Q
RX
TX
M
O
N
RX
TS
T
LP
1
LP
2
ALM
AC
T
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
P
W
R
D
SX
TX
E
Q
R
X
TX
M
O
N
RX
TS
T
LP1
LP
2
AL
M
AC
T
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
PW
R
DSX
TX
E
Q
R
X
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
PW
R
D
S
X
TX
E
Q
RX
TX
M
O
N
RX
TS
T
LP
1
LP2
ALM
AC
T
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
P
WR
D
SX
TX
E
Q
R
X
TX
M
O
N
RX
TST
LP
1
L
P2
A
L
M
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
PW
R
D
SX
TX
E
Q
RX
TX
M
O
N
RX
TST
L
P1
LP2
A
LM
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
PW
R
D
SX
TX
E
Q
RX
TX
M
O
N
RX
TS
T
LP
1
LP
2
ALM
AC
T
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
P
W
R
D
SX
TX
E
Q
R
X
TX
M
O
N
RX
TS
T
LP1
LP
2
AL
M
AC
T
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
PW
R
DSX
TX
E
Q
R
X
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
PW
R
D
S
X
TX
E
Q
RX
TX
M
O
N
RX
TS
T
LP
1
LP2
ALM
AC
T
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
P
WR
D
SX
TX
E
Q
R
X
TX
M
O
N
RX
TST
LP
1
L
P2
A
L
M
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
P
WR
DSX
TX
E
Q
RX
TX
M
O
N
RX
TST
LP1
LP2
AL
M
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
R
X
TX
M
O
N
RX
TST
LP1
L
P2
ALM
AC
T
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
PW
R
DS
X
TX
E
Q
R
X
T
X
M
O
N
R
X
TS
T
LP1
L
P2
AL
M
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
PW
R
DSX
TX
E
Q
RX
T
X
M
O
N
R
X
T
ST
LP
1
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
D
S
X
T
X
E
Q
RX
TX
M
O
N
RX
T
ST
LP
1
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
PW
R
DS
X
T
X
E
Q
RX
TX
M
O
N
RX
T
ST
L
P1
LP2
A
LM
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
PW
R
D
SX
T
X
E
Q
RX
TX
M
O
N
RX
TS
T
L
P1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
U
N
I
T
1
1
8
1
0
0
0
L
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
U
N
IT
1
1
8
1
0
0
0
L
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
PW
R
DS
X
TX
E
Q
RX
TX
M
O
N
RX
T
ST
L
P1
LP2
ALM
ACT
G
R
N
=
N
O
R
M
Y
E
L
=
M
A
N
Total Access 3000/3010
Figure 24. Loop Support System Arrangement
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