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Field Name
Description
Mode
xDSL mode that the modem has trained under, such as ADSL2+, G.DMT, etc.
Traffic Type
Connection type. Options are:
ATM
,
PTM
and
ETH
.
Status
Status of the connection. Options are:
Up
,
Disabled
,
NoSignal
, and
Initializing
.
Link Power State
Current link power management state (e.g., L0, L2, L3).
Downstream
and
Upstream
columns
Line Coding (Trellis)
State of theTrellis Coded Modulation. Options are
On
and
Off
.
SNR Margin (0.1 db)
The signal-to-noise ration margin (SNRM) is the maximum increase (in dB) of the
received noise power, such that the modem can still meet all of the target BERs over all
the frame bearers. [2]
Attenuation (0.1 db)
The signal attenuation is defined as the difference in dB between the power received at
the near-end and that transmitted from the far-end. [2]
Output Power (0.1
dBm)
Transmit power from the gateway to the DSL loop relative to one Milliwat (dBm).
Attainable Rate
(Kbps)
The typically obtainable sync rate, i.e., the attainable net data rate that the receive PMS-
TC and PMD functions are designed to support under the following conditions:
l
Single frame bearer and single latency operation
l
Signal-to-Noise Ratio Margin (SNRM) to be equal or above the SNR Target Mar-
gin
l
BER not to exceed the highest BER configured for one (or more) latency paths
l
Latency not to exceed the highest latency configured for one (or more) latency
paths
l
Accounting for all coding gains available (e.g., trellis coding, RS FEC) with latency
bound
l
Accounting for the loop characteristics at the instant of measurement [2]
PhyR Status
(
Visible only for gateways connected via DSL
) Physical Layer Retransmission feature
status. Options are
Inactive
and
Active
.
G. inp Status
(
Visible only for gateways connected via DSL
) The status of video data retrieval from the
buffer. Options are
Inactive
and
Active
.
Rate (Kbps)
The current net data rate of the xDSL link. Net data rate is defined as the sum of all
frame bearer data rates over all latency paths. [2]
Downstream
and
Upstream
columns for DSL-specific fields only
B (# of bytes in Mux
Data Frame)
The nominal number of bytes from frame bearer #n per Mux Data Frame at Reference
Point A in the current latency path.
M (# of Mux Data
Frames in FEC Data
Frame
The number of Mux Data Frames per FEC Data Frame in the current latency path.
T (Mux Data Frames
over sync bytes)
The ratio of the number of Mux Data Frames to the number of sync bytes in the current
latency path.
R (# of check bytes in
FEC Data Frame)
The number of Reed Solomon redundancy bytes per codeword in the current latency
path. This is also the number of redundancy bytes per FEC Data Frame in the current
latency path.
