Huawei SmartAX MA5603T Configuration Manual page 969

SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Commissioning and Configuration Guide
Item
Policy for
activating a
legacy
customer
premises
equipment
(CPE)
Issue 01 (2014-04-30)
Function
A legacy CPE is a
VDSL2 CPE
(supporting G.993.2,
not G.993.5) that does
not support Vectoring.
If such a CPE is
activated in G.993.2
mode in the Vectoring
system, the crosstalk
impact on other lines
cannot be canceled,
causing the Vectoring
system performance to
deteriorate. To
minimize the impact,
set the activation
policy of a legacy CPE
based on site
requirements.
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11 FTTB and FTTC Solution Configuration
Description
By default, the policy
for activating a legacy
CPE is set to limit.
l no-limit: The
Vectoring legacy
CPE is activated in
common VDSL2
mode (G.993.2
mode), or non-
Vectoring mode, in
which the
Vectoring system
performance is
affected. This
mode is used in the
Vectoring initial
phase when a large
number of CPEs
need to be
upgraded or
replaced and the
Vectoring
performance are
not concerned.
l limit: The
Vectoring legacy
CPE is activated in
common VDSL2
mode but the line
PSD is
automatically
shaped so that the
CPE can be
activated at a low
VDSL2 rate,
preventing
crosstalk on other
lines. This mode is
used in Vectoring
medium phase
when some CPEs
have not been
upgrade or
replaced.
l force-friendly-ds-
limit-us: force
friendly is used in
the downstream
Commands
xdsl vectoring legacy-
cpe activate-policy
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