[FX.php List] lost network connection

[Someone]

Hi,
A client of mine just lost network connection. Been running for 3 years.
The web site can't access filemaker server advance 7v3 running on a  
windows 2003 server.

Simple test
define("DEBUG", true);
include_once("FX.php");
$serverIPAddress = 'some ip address';
$InstanceName = new FX($serverIPAddress);
$ReturnedData = $InstanceName->FMDBNames();

click on the Using FileMaker URL: link gets
Safari can’t open the page “http://serverIPAddress:80/fmi/xml/ 
FMPXMLRESULT.xml?-db=&-max=&-dbnames”. The error was: “lost network  
connection” (NSURLEsrorDomain:-1005)

Any ideas greatly appreciated.

Frank