ZyXEL Communications MSC1000G Series, Руководство пользователя

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Chapter 30 profile Commands
Management Switch Card User’s Guide
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The profile is a table that contains information on SHDSL line configuration. Each entry in this table
reflects a parameter defined by a manager, which can be used to configure the shdsl line. After you
create an SHDSL profile, assign it to SHDSL ports on an SHDSL line card.
You must specify at least the profile’s name and minimum and maximum rates. The default value
will be used for any of the other fields that you omit.
The minimum transmission rate must be less than or equal to the maximum transmission rate.
When using 4 or 8-wire groups, you must apply the profile to consecutive ports. A profile for a 4-
wire group can be used with ports 1,2 or 3,4 or 5,6 and so forth (the first two ports, the second two
ports, the third two ports and so on). You cannot use a 4-wire group with ports 2,3 or 4,5. A profile
for an 8-wire group can be used with ports 1,2,3,4 or 5,6,7,8 or 9,10,11,12 and so forth (the first
four ports, the second four ports, the third four ports and so on). You cannot use an 8-wire group
with ports 2,3,4,5 or 4,5,6,7.
The following example creates a premium profile (named gold) for providing subscribers with very
high connection speeds. The minimum transmission rate is 2112 Kbps and the maximum
transmission rate is 4096. It sets two ports to function as a 4-wire group. It uses Annex A (DSL
over POTS). It turns on line probes and has them use the current condition target signal to noise
ratio margin which it sets to 5 db.
30.16.2 profile shdsl map Command
Syntax:
profile shdsl map < profile >
2wire|4wire|mpair4
= The wire pair number.
2wire
: A normal connection using a single SHDSL port’s two wires, this
is the default.
4wire
: A 4-wire n-wire group (two SHDSL ports grouped together).
mpair4
: An 8-wire n-wire group (four SHDSL ports grouped together).
lp_off
= Disable line probe.
The SHDSL line card and subscriber modem use line probes to determine
the best possible transmission rate. This is used in rate adaptation. This is
the default line probe mode.
If you disable line probe, the system skips the rate adaptation phase to
shorten connection set up time.
lp_on_cur
=
Enable line probe with current target Signal to Noise Ratio margin.
lp_on_wc
=
Enable line probe with worst case target Signal to Noise Ratio margin.
< curr-margin >
=
The current condition target Signal to Noise Ratio margin, -10 ~ 21 in dB.
You only configure this if you enable line probing using the current target
Signal to Noise Ratio margin.
< worst-margin >
= The worst case Signal to Noise Ratio margin, -10 ~ 21 in dB. You only
configure this if you enable line probing using the worst case target Signal
to Noise Ratio margin.
ras> profile shdsl set gold 2112 4096 annexa 4wire lp_on_cur 5