Yes that could be possible, but... The $soap_location AND the $soap_uri are right. They are besides the /remote part the same as what I use to login to my ISPConfig. Offcourse the 'myserverip' should be replaced by the IP or URL of the real server, but I will not encourage anyone to hack my server at this moment ;-)
When I enter the whole URL in a browser, I get a blank screen as well. I think at least it should display something...