Zyxel IES-5112 [358/1156] Chapter 12 profile screens

Zyxel IES-5112 [358/1156] Chapter 12 profile screens
Chapter 12 Profile Screens
Management Switch Card User’s Guide
358
Figure 231 Profile > VDSL2 > Inm Profile
The following table describes the labels in this screen.
Table 171 Profile > VDSL2 > InmProfile
LABEL DESCRIPTION
Name Enter a descriptive name for identification purposes.
DownStream The parameters in this column relate to downstream transmissions.
Upstream The parameters in this column relate to upstream transmissions.
Equivalent INP
Mode
Select how to compute the “equivalent INP” (Impulse Noise Protection). ITU-T G.993.2
Amendment 2 and G.997.1 call this parameter INM_INPEQ_MODE.
0: the equivalent INP equals the Impulse Noise Cluster Length (INCL) with the cluster
continuation parameter set to 0. INCL is defined as the number of data symbols from the
first to the last severely degraded data symbol in the cluster. The cluster cannot contain
any gaps so this is the number of severely degraded data symbols in the cluster. Your
cluster continuation parameter configuration is ignored when you select mode 0.
1: the equivalent INP equals the INCL with the cluster continuation parameter set as
configured. The cluster can contain gaps up to the size of the cluster continuation
parameter.
2: the equivalent INP equals the number of severely degraded data symbols in the cluster
with the cluster continuation parameter set as configured. The cluster can contain gaps up
to the size of the cluster continuation parameter.
3: the equivalent INP is set using a set of equations related to interoperation with Reed-
Solomon coding as defined in the standard, specifically in Draft Amendment 2 to ITU-T
G.993.2, Section 11.4.2.2.
Cluster
Continuation
Parameter [0~64]
Specify a number of DMT symbols to set how big a gap of non-severely degraded data
symbols must be to separate a cluster.
Inter Arrival Time
Offset [3~511]
Specify the inter-arrival time (IAT) offset to determine in which bin of the IAT histogram
the IAT is reported. The offset is measured in DMT symbols. ITU-T G.997.1 calls this
parameter Impulse Noise Monitoring Inter Arrival Time Offset (INMIATO).
Inter Arrival Time
Step [0~7]
Specify the inter-arrival time step for the IAT anomaly generation that determines in
which bin of the inter-arrival time histogram the IAT is reported. ITU-T G.997.1 calls this
parameter Impulse Noise Monitoring Inter Arrival Time Step (INMIATS).

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