What is the trackback URL used for?
On my blog, if I try one for example http://www.sopur.com/htsrv/trackback.php/60, I always get the error message:

1 No url to your permanent entry given.

On the entry, there is a trackback: http://www.sopur.com/index.php/technik/2006/11/15/cablecom_senkt_preis_fur_digital_tv_aber.

What is wrong?
And I would prefer to have displayed instead of «http://www.sopur.com/htsrv/trackback.php/60» the actual URL: «http://www.sopur.com/index.php/technik/2006/11/15/cablecom_senkt_preis_fur_digital_tv_aber».
Or isn't that the idea of this line? How could I do that?

I hope, someone could answer. I did search the forum, but I didn't found a solution.
Thanks and regards
Sopur