as far as I know are there two different technologies for DSL for transfering data. Looks like you have "interleaving" which should be for error correction while transfering data. Better pings should be possible with "fastpath" which reduces latency...
I've found a German Wiki-site which describes fastpath: http://de.wikipedia.org/wiki/Fastpath --> google-translated http://translate.google.com/translat...language_tools
You should ask the hotline support of your provider if they can switch that...