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Field Name
Description
S (ratio of FEC over
PMD Data Frame
length)
The ratio of FEC over PMD Data Frame length.
L (# of bits in PMD
Data Frame)
The number of bits from the latency path included per PMD.
D (interleaver depth) The interleaving depth in the current latency path.
Delay (msec)
The PMS-TC delay in milliseconds of the current latency path (or the lowest latency path
when running dual-latency paths).
INP (DMT symbol)
The input level for DMT-managed DSL environments.
OH Frames
The number of xDSL OH Frames transmitted/received.
OH Frame Errors
The number of xDSL OH Frames transmitted/received with errors.
(End of DSL-specific field group)
Super Frames
The number of xDSL Super Frames transmitted/received.
Super Frame Errors
The number of xDSL Super Frames transmitted/received with errors.
RS Words
The number of Reed-Solomon-based Forward Error Correction (FEC) codewords trans-
mitted/received.
RS Correctable Errors The number of Reed-Solomon-based FEC codewords received with errors that have been
corrected.
RS Uncorrectable
Errors
The number of Reed-Solomon-based FEC codewords received with errors that were not
correctable.
RS Codewords
Received
(
Visible only for gateways connected via DSL
) Total number of Reed-Solomon Codewords
received.
RS Codewords Cor-
rected
(
Visible only for gateways connected via DSL
) Total number of Reed-Solomon Codewords
corrected.
RS Codewords Uncor-
rected
(
Visible only for gateways connected via DSL
) Total number of Reed-Solomon Codewords
Uncorrected
HEC Errors
A count of ATM HEC errors detected. As per ITU-T G.992.1 and G.992.3, a1-byte HEC is
generated for each ATM cell header. Error detection is implemented as defined in ITU-T
I.432.1 with the exception that any HEC error shall be considered as a multiple bit error,
and therefore, HEC Error Correction is not performed. [1],[2]
OCD Errors
Total number of Out-of-Cell Delineation errors. ATM Cell delineation is the process which
allows identification of the cell boundaries. The HEC field is used to achieve cell delin-
eation. [4] An OCD Error is counted when the cell delineation process transitions from the
SYNC state to the HUNT state. [2]
LCD Errors
Total number of Loss of Cell Delineation errors. An LCD Error is counted when at least
one OCD error is present in each of four consecutive overhead channel periods and SEF
(Severely Errored Frame) defect is present. [2]
Total Cells
The total number of cells (OAM and Data cells) transmitted/received.
Data Cells
The total number of data cells transmitted/received.
Bit Errors
The total number of Idle Cell Bit Errors in the ATM Data Path. [3]
Total ES
Total number of Errored Seconds. This parameter is a count of 1-second intervals with
one or more CRC-8 anomalies. [4]
