DSL "line noise" on upload only -- why?
I am a Teksavvy DSL customer (DSL High Speed 15 service). For quite some time I have been having trouble getting the full advertised upload speed on my connection (I typically max out around 0.67 Mbps when I should be getting 1.0 Mbps) On enquiring with a Teksavvy rep, I was told that there is significant "noise on the line" that is limiting the upload speed. The rep recommended that I use a shorter phone cable between the jack and the DSL modem, which I did; this improved my download speed, which was already fine, by about 5%, but did nothing for my upload speed.
My questions:
My questions:
- Is the line noise problem likely to be "my fault" (inside my house, my responsibility) or something on Teksavvy or Bell's end?
- What can I do to get rid of the line noise?
- Why would the line noise be affecting uploads only, and not downloads?