Figure 222 Tone Diagnostics Command Example; Table 80 Tonediag Command - ZyXEL Communications IES-1248-51 User Manual

IES-1248-51 User's Guide
The following example displays the tone diagnostics results for ADSL port 8.

Figure 222 Tone Diagnostics Command Example

ras> ad lined toneD 1
port: 1
number_of_subcarries:
latn:
satn:
snrm:
attndr:
farEndActatp:
i log(dB)
0
1
2
3
4
5
6 -21.1
7 -15.3
8
9
----------------------Snip------------------------
509
510
511
The following table lists the tone diagnostic parameters. See the ITU-T's G.992.3 for more
information.

Table 80 ToneDiag Command

LABEL
number_of_
subcarries
hlinScale:
latn:
satn:
snrm:
attndr:
farEndActatp:
332
512
24.1
24.1
30.2
28008000
-31.0
QLN(dBm) SNR(dB)
N/A N/A
N/A N/A
N/A N/A
N/A N/A
N/A N/A
N/A N/A
-125.5
-124.0
-9.9 -123.0
-5.7 -120.5
6.0 -124.0
6.0 -124.0
6.0 -123.0
DESCRIPTION
Discrete Multi-Tone (DMT) modulation divides up a line's bandwidth into sub-
carriers (sub-channels) of 4.3125 KHz each.
This number indicates how many upstream and downstream DMT sub-carriers
the ADSL connection is using.
The channel characteristics function is represented in linear format by a scale
factor and a complex number. This is the maximum upstream and downstream
scale factor used in producing the channel characteristics function.
This is the upstream and downstream Line Attenuation (in dB).
This is the upstream and downstream Signal Attenuation (in dB).
This is the upstream and downstream Signal-to-Noise Ratio Margin (in dB). A
DMT sub-carrier's SNR is the ratio between the received signal power and the
received noise power. The signal-to-noise ratio margin is the maximum that the
received noise power could increase with the IES-1248-51 still being able to
meet its transmission targets.
This is the upstream and downstream Attainable Net Data Rate (in bit/s).
This is the upstream and downstream Far End Actual Aggregate Transmit
Power (in dBm)
32
2.7
61.3
25.0
1248000
11.9
N/A
N/A
N/A
N/A
N/A
N/A
17.5
26.0
31.0
38.0
29.0
29.0
26.5
Chapter 49 ADSL Commands