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Ciao,

1. mi sono sempre chiesto come venga calcolato il
Capacity Used: 61% 44%

upload/download qualcuno né ha idea ?


Ho una adsl a 7Mbit i valori sono nella media:
Noise Margin: 21.0 dB 27.5 dB
Output Power: 20.0 dBm 10.0 dBm
Attenuation: 23.0 dB 8.0 dB

Direi che mi aggancio anche abbastanza bene:

DS Channel1 DS Channel0 US Channel1 US Channel0
Speed (kbps): 0 8128 0 476
CRC Errors: 0 0 0 276
Header Errors: 0 0 0 3154

US Channel0 stà per ? Grazie a tutti per la disponibilità.

[quote="egarim"]Ciao,

1. mi sono sempre chiesto come venga calcolato il
Capacity Used: 61% 44%

The aggregate bit rate calculation is an estimate, which does not accurately model all the line conditions that affect the true attainable bit rate for a given profile. The calculations for aggregate bit rate are performed as follows:

•The downstream capacity is obtained via the number of Reed-Solomon payload bytes per frame exchanged during line training, that is, the K value. The per-second estimate is then calculated from this K value. An extrapolated margin value is derived from the per-second estimate to make sure that if trained at the estimated rate, the line will still have adequate margin.

•For upstream, unlike downstream, the Reed-Solomon payload bytes per frame is not readily available. Furthermore, unlike downstream, which requires a CPE EOC response to know the downstream margin, the upstream margin is readily available at the CO (upstream margin is measured at CO end). Using this upstream margin and the number of bins utilized for upstream, an estimate of upstream attainable bit rate is made. [CSCdv05351 and CSCdv05322]