Zyxel IES-5112 [835/1156] Port vdsl inm command

Zyxel IES-5106 [835/1156] Port vdsl inm command
Chapter 31 port Commands
Management Switch Card User’s Guide
835
This command configures ITU-T G.988.4’s improved impulse noise protection settings on a VDSL
connection.
The following example sets the upstream G.inp impulse noise protection at 1 DMT symbol on traffic
on port 5 on the VDSL card in slot 4.
31.37.7 port vdsl inm Command
Syntax:
port vdsl inm <slot-port> xtuc|xtur [eim <eim>] [ccp <ccp>] [iato <iato>] [iats
<iats>] [isdb <isdb>]
where
ras> port vdsl ginp inpmin 4-5 us-inp 2
xtuc =
Set parameters for downstream transmissions.
xtur =
Set parameters for upstream transmissions.
<eim>
Set 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 paramter 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.
<ccp>
Cluster Continuation Parameter, specify a number of DMT symbols to set how big a
gap (0~64) of non-severely degraded data symbols must be to separate a cluster.
<iato>
Specify the inter-arrival time (IAT) offset ( 3~511) 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).
<iats>
Specify the inter-arrival time step (0~7) 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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