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Здравствуйте,вот какой вопрос хотел задать:у меня странные показания snr margin на модуляции gdmt и adsl2+,на первой downstream 10db, upstream 18db,на второй 28db и 14db,почему такие скачки не могу бобиться мегабита отдачи без ошибок.
вот цыфры:Mode: ADSL2+
Line Coding: Trellis On
Status: No Defect
Link Power State: L0
Downstream Upstream
SNR Margin (dB): 28.4 14.0
Attenuation (dB): 13.0 4.2
Output Power (dBm): 6.8 1.2
Attainable Rate (Kbps): 24416 800
Rate (Kbps): 8191 766
MSGc (number of bytes in overhead channel message): 59 68
B (number of bytes in Mux Data Frame): 254 23
M (number of Mux Data Frames in FEC Data Frame): 1 1
T (Mux Data Frames over sync bytes): 1 1
R (number of check bytes in FEC Data Frame): 0 0
S (ratio of FEC over PMD Data Frame length): 0.9922 0.9600
L (number of bits in PMD Data Frame): 2056 200
D (interleaver depth): 1 1
Delay (msec): 0 0
Super Frames: 59843 56765
Super Frame Errors: 0 1
RS Words: 0 0
RS Correctable Errors: 0 0
RS Uncorrectable Errors: 0 N/A
HEC Errors: 0 0
OCD Errors: 0 0
LCD Errors: 0 0
Total Cells: 18644147 1741031
Data Cells: 60900 11458
Bit Errors: 0 0
Total ES: 0 1
Total SES: 0 0
Total UAS: 123 0
и еще:Mode: G.DMT
Type: Fast
Line Coding: Trellis On
Status: No Defect
Link Power State: L0
Downstream Upstream
SNR Margin (dB): 10.4 18.0
Attenuation (dB): 10.0 3.5
Output Power (dBm): 12.5 11.8
Attainable Rate (Kbps): 9376 1216
Rate (Kbps): 8128 768
K (number of bytes in DMT frame): 255 25
R (number of check bytes in RS code word): 0 0
S (RS code word size in DMT frame): 1 1
D (interleaver depth): 1 1
Delay (msec): 0 0
Super Frames: 1179 1178
Super Frame Errors: 0 0
RS Words: 0 0
RS Correctable Errors: 0 0
RS Uncorrectable Errors: 0 N/A
HEC Errors: 0 0
OCD Errors: 0 0
LCD Errors: 0 0
Total Cells: 384869 0
Data Cells: 58 0
Bit Errors: 0 0
Total ES: 0 1
Total SES: 0 0
Total UAS: 148 0
прошивки ставил разные,не подскажите почему так? Спасибо.
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