lokuochin wrote:
經詢問 ZyXEL 廠商
你應該問的是P874支不支援Profile30a....
lokuochin wrote:
...(恕刪)
這樣可以申請100m嗎?
============================================================================
VDSL Training Status: Showtime
VDSL Profile: Profile 17a
Traffic Type: PTM Mode
============================================================================
VDSL Port Details Upstream Downstream
Line Rate: 3.253 Mbps 54.492 Mbps
Actual Net Data Rate: 3.200 Mbps 54.397 Mbps
Trellis Coding: ON ON
SNR Margin: 30.4 dB 16.4 dB
Actual Delay: 5 ms 5 ms
Transmit Power: 10.9 dBm 14.5 dBm
Receive Power: -9.1 dBm 0.4 dBm
Actual INP: 18.0 symbols 18.0 symbols
Total Attenuation: 16.9 dB 14.1 dB
Attainable Net Data Rate: 49.307 Mbps 173.732 Mbps
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): 4 .2 18.7 25.8 N/A 11.1 23.1 34.4
Signal Attenuation(dB): N/A 14.2 23.7 N/A 11.1 23.1 34.4
SNR Margin(dB): N/A 30.2 30.5 N/A 17.9 16.1 15.7
Transmit Power(dBm): N/A 4 .5 4 .9 N/A 11.3 10.0 6 .8
============================================================================
我是看線路給的速度= =
以下是我的...
============================================================================
VDSL Training Status: Showtime
VDSL Profile: PROF_17A
Traffic Type: PTM
============================================================================
VDSL Port Details Upstream Downstream
Line Rate: 0.289 Mbps 2.222 Mbps
Actual Net Data Rate: 0.256 Mbps 2.176 Mbps
SNR Margin: 26.7 dB 14.4 dB
Actual Delay: 6.0 ms 7.0 ms
Transmit Power: 1.8 dBm 8.5 dBm
Receive Power: -34.7 dBm -16.9 dBm
Actual INP: 2.0 symbols 21.0 symbols
Total Attenuation: 18.7 dB 43.2 dB
Attainable Net Data Rate: 0.982 Mbps 4.296 Mbps
因為友了50M的安裝經驗,很多人為了差異幾M可能就會哇哇叫,何況若是使用VDSL去安裝100M的話,基本上就根本達不道100Mbps , 因為VDSL2 的機器介面都是100M 的Switch ,以100M來看實際可上的速率最高大概就是95Mbps上下...差這5-6Mbps 誰補?
所以除非換上真光纖搭配具備Gbe的轉換器(1000Mbps Switch),才可能達到100M 甚至超過100Mbps速率.
所以我覺得用VDSL2 來裝100Mbps的線路,可能性不是很高, 除非安裝前就是說好最多90幾個妹...要不每天工程人員以及服務電話,就可能接到手軟.
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