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MX2800 STS-1 User Manual
Line BERT
A Line BERT
(Figure
6-9) enables the MX2800 STS-1 to perform a "head-to-head" BERT test toward the
T1/E1 line mapped to the VT selected. Selecting Line BERT will replace all outgoing T1/E1 traffic for the
T1/E1 mapped to the selected VT with an unframed QRSS pattern. When Line 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 Data Mode will cease QRSS pattern generation and substitution of the
incoming data stream.
When in Line BERT mode, only the Data Mode option for the VT/Port
under test may be selected. Selecting any other option will result in an
error message being displayed.
STS-1
LIU
61204659L1-1A
NOTE
BERT
GENERATOR
CODEC
(1 of 28)
STS-1
MAPPER
CODEC
(28 of 28)
BERT
CHECKER
Figure 6-9. Line Bert Test
Loopbacks, Section 6
VT/Port Loopbacks
T1/E1 LIU
(1 of 28)
T1/E1 LIU
(28 of 28)
6-7
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