Thank you Ellla,
It appears that you are correct, I have been doing a lot of research into the problem I am having and it appears that the modem that I was provided with (Thomsen Gateway TG782G) by Bigpond does have a problem. Of course I am being told that the firmware is up to date and that it could be noise etc. on my line. I am actually considering changing my modem at this stage as I think that this will be a faster fix to my proble. Thank you again