ZyXEL Communications MSC1000G - Page 898

Chapter 30 profile Commands
Management Switch Card User’s Guide
898
[dpboepsd <tone> <epsd>
[...]|<psdid>]
= DPBOEPSD (Assumed Exchange PSD Mask) defines
the PSD mask that is assumed to be exchanged at
CO. Use this graph to view PSD level to frequency
relationship. The horizontal is frequency in MHz and
vertical is power level in dBm/Hz.
<epsd>: 0~255 (scalar value 0~-127.5dBm in steps
of -0.5dBm)
<psdid>: standard psd shape id for psd toolbox
0: psd_co, 1: psd_flat, 2: psd_cab_ansi, 3:
psd_cab_etsi, 4: psd_exch_etsi, 5: psd_exch_ansi
[upbokl <esel>]
= Sets the electrical length of the cable between
system and cabinet 0~511 in units of 0.5dB.
[upboklf
<disable|auto|override>]
= UPBO (Upstream Power Back-Off) mitigates far-end
crosstalk (FEXT) caused by upstream transmission on
shorter loops to longer loops.
disable: turns UPBO off.
auto: enables UPBO and CPE devices’ PSD
adjustment based on the negotiation result with the
Switch.
override: forces CPE devices to use the electrical
length defined by the system (for the UPBOKL setting
above) to compute their UPBO.
[upbopsda <us1a~us4a>]
= Specifies parameter A value(s) for each upstream
band. The parameter A defines the original band
shape.
<us1a~us4a>: 4000~8095, in steps of 0.01 dBm/Hz.
[upbopsdb <us1b~us4b>]]
Specifies parameter B value(s) for each upstream
band. The parameter B defines the power back-off
degree.
<us1b~us4b>: 0~4095, in steps of 0.01 dBm/Hz.
[vdsl2profile
<vdsl_2profile_list>]
= Specifies the VDSL2 profile(s) used for this VDSL line
profile.
vdsl2-profile-type: The available VDSL2 profile
types include 8a, 8b, 8c, 8d, 12a, 12b, 17a, and 30a.
You can specify multiple profile types by using a
comma (,) in between.
[limitmask d32|d48|d64|d128|b7-
1~10|b8-1~16]
= Sets the downstream limit mask you want the system
to use.
[us0band disable|enable]
= Specify whether you want the system to
automatically activate the upstream band (enable)
or not (disable) when necessary. Select Allow to
have CPE and the system use the upstream band 0
for upstream traffic over long distances. If you select
disable, the CPE may not able to transmit data over
long distances.
[us0mask
eu32|eu36|eu40|eu44|eu48|eu52|eu
56|eu60|eu64|eu128]
= Select a limit mask you want the system to use for
the upstream band 0.