
Quad DS-1 Module
Verilink AS4000 User Manual 5-5
ESF Registers
In accordance with industry standards such as AT&T 54016 and
ANSI T1.403, the Quad DS-1 module allows user access to registers
in which information is stored about circuit performance.
On an ESF T1 facility, the use of CRC-6 error checking allows each
device to have detailed information about circuit performance. The
Quad DS-1 module stores these results for the previous 24 hours
on each of the 4 T1 ports.
Figure 5-5 ESF REgisters Summary Port Selection Menu
ESF status This field defines the status of the T1 line. The status is defined by an eight-digit
number:
FU0000L0
Digit #1 - “F” or “0” where “F” indicates Failed Signal State (FSS) if “U” or “L” is true.
Digit #2 - “U” or “0” where “U” indicates an unavailable signal state.
Digit #3 through #6 and #8 are always “0.”
Digit #7 - “L” or “0” where “L” indicates that the T1 line is in loop.
V
VV
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A
A A
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SS
S4000
4000 4000
4000 -
- -
- Quad
Quad Quad
Quad T1
T1 T1
T1
Slo
Slo Slo
Slot
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Help Help
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Qua
Qua Qua
Quad
d d
d T1 E
T1 ET1 E
T1 ES
SS
SF reg
F regF reg
F regi
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ster ster
ster s
ss
summar
ummarummar
ummary
y y
y menu
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Port
Port Port
Port 1
1 1
1 - Po
- Po- Po
- Por
rr
rt #1
t #1t #1
t #1
Port
Port Port
Port 2
2 2
2 - Po
- Po- Po
- Por
rr
rt #2
t #2t #2
t #2
Port
Port Port
Port 3
3 3
3 - Po
- Po- Po
- Por
rr
rt #3
t #3t #3
t #3
Port
Port Port
Port 4
4 4
4 - Po
- Po- Po
- Por
rr
rt #4
t #4t #4
t #4
E
EE
E[
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[x]it
x]it x]it
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