Table 10-6 Typical configurations for key parameters of a VDSL2 line (0.4 mm twisted pair)
Parameter Access Distance Remarks
< 100 m < 300 m 300-500 m 500-800 m 800-1000 m
Selected VDSL2
profile
30a 17a 12a 8b, 12a 8b A 30a VDSL2
profile is
recommended
on an FTTD
network.
PSD mask B8-16
(998-
M2x-B)
B8-11
(998ADE
17-M2x-
A)
B8-6 (998-
M2x-B)
B8-6 (998-
M2x-B)
B8-6 (998-
M2x-B)
None
Enable US0 (U0) No Yes Yes Yes Yes Enable US0 if
the distance is
longer than
500 m.
Maximum transmit
rate downstream
100 Mbit/
s
50 Mbit/s 40 Mbit/s 25 Mbit/s 20 Mbit/s
l Limiting
the
upstream
and
downstrea
m rates
ensures a
higher
signal-to-
noise ratio
(SNR)
margin for
the line and
therefore
enhances
its
capability
for
withstandin
g noise and
interferenc
e.
l The rates
can be
specified
using these
two
parameters
and also
can be
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Commissioning and Configuration Guide 10 FTTD Configuration
Issue 01 (2014-04-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
793
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