Table of Contents
Advertisement
this condition will be locked until a remote
provisioning command orders the controller card to
switch the customer data back onto the main line, or a
signal failure of greater than 30 seconds occurs on the
protect Slot 8.
Protect Receive Path
The receive path is non-protected and transformer
coupled between the network and the customer. The
receive path is monitored for in-band or ESF
bit-patterned datalink messages. The receive path will
be a passive transmission path.
Protect Transmit Path
The transmit path is non-protected and transformer
coupled between the network and the customer. The
transmit path will be a passive transmission path.
Table 2. In-Band Commands
H
C
o
m
m
n a
d
P
t a
S
w
t i
h c
r A
i m
g n
C
S
t o l
E
n
b a
e l
C
S
t o l
D
s i
b a
e l
C
S
w
t i
h c
R
l e
a e
e s
C
S
w
t i
h c
A
c
v i t
i t a
n o
C
o
e d
i L
e n
1
C
i L
e n
2
C
i L
e n
3
C
i L
e n
4
C
i L
e n
5
C
i L
e n
6
C
i L
e n
7
C
61190860L1-5B
All manuals and user guides at all-guides.com
x e
i B
a n
y r
P
t a
e t
n r
e t
n r
4
0 4
1 1
0 0
1 0
0 0
1 0
0 0
5
0 4
1 1
0 0
1 0
1 0
1 0
0 0
6
0 4
1 1
0 0
1 0
0 1
1 0
0 0
4
F 4
1 1
0 0
1 0
0 0
1 0
0 0
4
1 4
1 1
0 0
1 0
0 0
1 0
0 0
4
2 4
1 1
0 0
1 0
0 0
1 0
0 0
4
3 4
1 1
0 0
1 0
0 0
1 0
0 0
4
4 4
1 1
0 0
1 0
0 0
1 0
0 0
4
5 4
1 1
0 0
1 0
0 0
1 0
0 0
4
6 4
1 1
0 0
1 0
0 0
1 0
0 0
4
7 4
1 1
0 0
1 0
0 0
1 0
0 0
Section 61190860L1-5, Issue 2
In-Band Commands
The in-band commands are based on a 16-bit repeating
binary pattern. These patterns were selected to avoid
random data replication and yellow alarm generation.
In-band code qualifications involve receiving the codes
for 5 contiguous seconds. The in-band codes can be
transmitted using SF/ESF framing or unframed. See
Table 2 for in-band commands.
Out-of-Band Commands
The out-of-band commands are based on the ANSI
T1.403-1995 standard on T1 protection switching.
ANSI T1.403-1995, Table 4, specifies the command
and response messages for T1 protection switching.
Out-of-band code qualifications involve receiving the
codes for greater than 4 consecutive messages. See
Table 3 for out-of-band commands.
Table 3. Out-Of-Band Commands
C
o
m
m
n a
d
S
w
t i
h c
r A
i m
g n
S
t o l
E
n
b a
e l
0 0
0 0
S
t o l
D
s i
b a
e l
0 0
0 0
S
w
t i
h c
R
l e
a e
e s
0 0
0 0
S
w
t i
h c
A
c
v i t
i t a
1 1
1 1
C
o
e d
R
s e
t e
i L
e n
1
0 0
1 0
i L
e n
2
0 0
0 1
i L
e n
3
0 0
1 1
i L
e n
4
1 0
0 0
i L
e n
5
1 0
1 0
i L
e n
6
1 0
0 1
i L
e n
7
1 0
1 1
H
x e
i B
a n
P
t a
e t
n r
1
F 8
F
0 0
1 0
0 1
7
F 8
F
1 0
1 1
0 1
7
A
F
F
1 0
1 1
0 1
2
F 6
F
0 0
0 1
1 0
n o
2
F 4
F
0 0
0 1
1 0
4
F 2
F
1 0
0 0
0 0
4
F 4
F
1 0
0 0
1 0
4
F 6
F
1 0
0 0
1 0
4
F 8
F
1 0
0 0
0 1
4
A
F
F
1 0
0 0
0 1
4
C
F
F
1 0
0 0
1 1
4
E
F
F
1 0
0 0
1 1
y r
P
t a
e t
n r
0 0
1 1
1 1
1 1
1 1
0 0
1 1
1 1
1 1
1 1
0 1
1 1
1 1
1 1
1 1
0 1
1 1
1 1
1 1
1 1
0 0
1 1
1 1
1 1
1 1
0 1
1 1
1 1
1 1
1 1
0 0
1 1
1 1
1 1
1 1
0 1
1 1
1 1
1 1
1 1
0 0
1 1
1 1
1 1
1 1
0 1
1 1
1 1
1 1
1 1
0 0
1 1
1 1
1 1
1 1
0 1
1 1
1 1
1 1
1 1
7
Advertisement
Table of Contents
