And how would I go about quantifying it?
I'm getting fairly dismal performance on my home broadband connection (modem shows around 1.4 Mb/s and I'm lucky if I hit 200 KB/s during real downloads) given that the chorus site shows my address covered by both ADSL2+ and VSDL.
Is this my most likely cause:
http://www.geekzone.co.nz/sbiddle/7872
and how much is the wiring on my property likely to contribute? Where is the best place to start looking for the cause?
EDIT: Sorry I had missed the sticky right at the top of the forum covering this, though during my admittedly quick skim of it I didn't see much in the way of actually confirming it is my wiring at fault or how to quantify the effect it's having. I have done isolation testing already, there are only 2 phone jacks in the house and I have disconnected the alarm that was previously connected to one of them... so I'm running out of ideas and just looking for more.