【NSW】求教Baulkham Hills宽带安装选择，除了Telstra和iiNet外还有更好的吗？

后太史生

准备搬家，新址在Chapel Ln， baulkham hills，离Exchange的位置挺远的（abt 5km）。这种情况下，选用哪种宽带产品会是最合适的呢？

    之前住在离TPG exchange <1km的地方也被时断时续的速度整到抓狂，所以在情况没有好转之前是不打算用TPG了，目前想考虑的是Telstra和iiNet，其实对于经济实惠的mynetfone其实很心动，但是他的网站上的网络覆盖查询一查就出错，我也不确定能不能安装。哪位达人能顺手帮我查一下，感激不尽。

    请问离交换机远的地方用cable会不会好一点？目前澳洲能提供cable接入的除了Telstra还有别家吗？

    墙裂感谢大家！

墨尔本的水獭

我认为网络质量最好的就是三家最贵的公司
telstra，iinet，internode

但是，你住在5km这种地方。。。。。。用哪家的adsl都不会快把

这么远的话，理论上是用cable比adsl好很多。

cable接入主要就是telstra和optus了吧，

但是cable的覆盖率比adls窄偶，你的看看你家又不

后太史生

哎，我也知道离交换机远的话日子不好过啊！现在看来没得选，就走iinet吧！

kinkyoo

你可以去Telstra和Optus网站上查询一下Cable是否可以安装
Optus的价格比较便宜。

后太史生

准备先整个iiNet的一年合同来试试吧，上帝保佑我下载能达到500K。

masterniu

为啥不试试cable，一样的价格，速度甩adsl几条街

墨尔本的水獭

原帖由 masterniu 于 2011-11-27 22:36 发表
为啥不试试cable，一样的价格，速度甩adsl几条街

cable的覆盖率比adsl低得多，得多

jackotman

我在baulkham hills, 用过iinet 和tpg的adsl. 速度只能到3000-4000 kbs.

现在换了telstra cable. 一直稳定在20M。 强烈推荐用cable.

purplenight

上足迹神猫, 然后tweak SNR, 5k的距离估计用ADSL 可能能达到5M以上.

y12345678

搬家

后太史生

原帖由 purplenight 于 2011-11-29 15:28 发表
上足迹神猫, 然后tweak SNR, 5k的距离估计用ADSL 可能能达到5M以上.

这 tweak SNR是何物啊？

purplenight

原帖由 后太史生 于 2011-12-5 21:15 发表


这 tweak SNR是何物啊？

So what is SNR margin?

SNR (signal to noise ratio) is a measure of the relative strength of the signal to the underlying noise on the line. High-speed ADSL works by "aiming" for a specific SNR. When your modem boots it "talks" to the DSLAM at the exchange and goes through a repeated sequence of increasing the transmission frequency and measuring the level of signal relative to the noise (SNR). When the SNR drops to the target ratio, the modem sets the frequency at which that occurs as the data transmission rate (or sync speed). So basically the modem keeps going faster until the SNR drops to the point which the DSLAM has nominated as it's default operating level. Continuing to increase the frequency would increase the sync speed but drop the SNR. If the SNR drops too low, the modem can't separate the signal from the noise and you get a dropout in the transmission resulting in either lost packets or a loss of line sync.

With the 7800N you can override the default SNR of the DSLAM on the SNR tweak page and force it to sync at a lower (or higher, if you really want) SNR, which in turn gives you a higher sync speed. The consequence of forcing a lower SNR is that your connection will have less "headroom" to cope with momentary or transient changes in the noise level, which can be caused by all sorts of electrical interference, including glitches in the mains power at you home. The loss of headroom will mean that you connection will drop out in some instances when it otherwise wouldn't if the SNR were higher (and the sync speed lower). So basically you're trading speed for stability. If you have a relatively good and stable line, the downside won't be generally noticable.

In general, the longer the copper path between you and the exchange, the more signal loss and degradation will be experienced and the more noise will be generated. The consequence of this is that the line attenuation increases and the target SNR is reached at much lower frequencies. That's why long line lengths mean slower ADSL.

原贴: http://forums.whirlpool.net.au/archive/1567481

i2i2

TRY TELSTRA CABLE MODEM