ZyXEL Communications SAM1316-22, Руководство пользователя

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Chapter 14 xDSL Profiles Setup
SAM1316-22 User’s Guide
109
Name These are the names of individual profiles. The DEFVAL profile always
exists and all of the DSL ports have it assigned to them by default.
You can use up to 31 ASCII characters; spaces are not allowed.
Max/Min Rate This field displays the maximum and minimum transfer rate for this
profile.
Wire Pair This field displays how many pairs of wires the profile uses.
Select
Modify
Select a profile’s Select radio button and click Modify to edit the
profile.
Select
Delete
Select a profile’s Select radio button and click Delete to remove the
profile.
The rest of the screen is for profile configuration.
Name When editing a profile, this is the name of this profile. When adding a
profile, type a name (up to 31 characters) for the profile.
Max Rate Type a maximum transfer rate for this profile.
Min Rate Type the minimum upstream transfer rate for this profile.
Annex Mode Select the region setting.
Select annex_a to use DSL over POTS (G.992.1 Annex A).
Select annex_b to use DSL over ISDN (G.992.1 Annex B).
Wire Pair Select a wire pair number.
Select 2wire for a normal connection using a single SHDSL port’s two
wires, this is the default.
Select 4wire for a 4-wire n-wire group (two SHDSL ports grouped
together).
Select mpair4 for an 8-wire n-wire group (four SHDSL ports grouped
together).
Line Probing
Enable Mode The SAM1316-22 and subscriber modem use line probes to determine
the best possible transmission rate. This is used in rate adaptation.
Select lp_off to have the SAM1316-22 skip the rate adaptation phase
to shorten connection set up time.
Select lp_on_cur to enable line probing using the current target
Signal to Noise Ratio margin.
Select lp_on_wc to enable line probing using the worst case target
Signal to Noise Ratio margin.
Current Condition
SNR Margin Type the current condition target Signal to Noise Ratio margin, -10 ~
21 in dB.
Worst Case SNR
Margin Type the worst case Signal to Noise Ratio margin, -10 ~ 21 in dB.
Table 24 Port Profile (continued)
LABEL DESCRIPTION