How far is my house from my exchange? What ADSL2/2+ speed am I likely to get?
Posted by Gabriel Yu on 14 March 2008 04:28 AM
BroadBand Choice can be used to find out which telephone exchange your phone is connected to. 
Then look up the Australian Exchange Guide to find its address. 

One not very accurate way is to get in your car and drive there. It may or my not give you a good number, because your phone wire may not take the same route.  Similarly whereis' directions option indicates a distance

Another way is to ask your ISP.  Telstra and the ISP know, but they won't tell you due to rules and regulations within Telstra.  However, if you get a CSR who is not really clued up, it may just slip out.

A third (very approximate) method is to divide the LoopAttenuation by 13.81.  E.g. 34dB attenuation indicates approx 2.5 km from exchange.

You can then look up this distance on Internode's ADSL and ADSL2+ Speeds and Reach Compared chart to get an estimate of speed.

Note that this can be affected by a number of factors, such as ...
- your phone line might actually be taking a more round-about route, and so could be further from the exchange.
- your phone line could be passing through a area with high interference, such as next to heavy machinery in an industrial area or close to a electricity transformer.

ISPs price ADSL2/2+ plans much the same as the 1.5Mbps ADSL1, and they don't guarantee that your ADSL2/2+ speeds will be faster than 1.5Mbps.  The bottom line is that you're only paying for 1.5Mbps and ANYthing over this should be considered a bonus.
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