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Field Name
Description
L (# of bits in PMD Data
Frame)
Number of bits from the latency path included per PMD.
D (interleaver depth)
Interleaving depth in the current latency path.
I (interleaver block size
in bytes)
Interleaving block size in the current latency path.
N (RS codeword size)
The number of bits per codeword.
Delay (msec)
PMS-TC delay in milliseconds of the current latency path (or the lowest latency path when running
dual-latency paths).
INP (DMT symbol)
Input level for DMT-managed DSL environments.
OH Frames
Number of xDSL OH Frames transmitted/received.
OH Frame Errors
Number of xDSL OH Frames transmitted/received with errors.
(End of DSL-specific field group)
Super Frames
!!!
Super Frame Errors
!!!
RS Words
Number of Reed-Solomon-based Forward Error Correction (FEC) codewords transmitted/received.
RS Correctable Errors
Number of Reed-Solomon-based FEC codewords received with errors that have been corrected.
RS Uncorrectable Errors Number of Reed-Solomon-based FEC codewords received with errors that were not correctable.
HEC Errors
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 iden-
tification of the cell boundaries. The HEC field is used to achieve cell delineation. [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
Total number of cells (OAM and Data cells) transmitted/received.
Data Cells
Total number of data cells transmitted/received.
Bit Errors
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]
Total SES
Total number of Severely Errored Seconds. An SES is declared if, during a 1-second interval, there are
18 or more CRC-8 anomalies in one or more of the received bearer channels, LOS (Loss of Signal)
