Line bert -7, Figure 6-8, Vt bert test -7 – ADTRAN 4200659L1 User Manual
Page 129: Figure 6-9, Line bert test -7, Line bert, When in, Mode, only the
Chapter 6. Diagnostics
61200659L1-1
MX2800 STS-1 User Manual
6-7
Figure 6-8. VT Bert Test
Line BERT
A
L
INE
BERT
enables the MX2800 STS-1 to perform a “head-to-
head”
BERT
test towards the T1/E1 line mapped to the VT selected.
Selecting
L
INE
BERT
will replace all outgoing T1/E1 traffic for the
T1/E1 mapped to the selected VT with an unframed QRSS pattern.
When
L
INE
BERT
is selected, additional menu items will appear to
show the state of pattern synchronization, cumulative error count,
and a clear error count option. Selecting
D
ATA
M
ODE
will cease
QRSS pattern generation and substitution of the incoming data
stream. See Figure 6-8 for an illustration of this test.
Figure 6-9. Line Bert Test
STS-1
MAPPER
T1/E1 LIU
(1 of 28)
T1/E1 LIU
(28 of 28)
STS-1
LIU
CODEC
(1 of 28)
CODEC
(28 of 28)
When in
L
INE
BERT
mode, only the
D
ATA
M
ODE
option for the
VT/Port under test may be selected. Selecting any other option will
result in an error message being displayed.
STS-1
MAPPER
T1/E1 LIU
(1 of 28)
T1/E1 LIU
(28 of 28)
STS-1
LIU
CODEC
(1 of 28)
CODEC
(28 of 28)