Here are some troubleshooting issues with using ILLiad services when you are on an OCLC Hosted site:
telnet abc-db.illiad.oclc.org 1433
If that does not work try port 1344
telnet abc-db.illiad.oclc.org 1344
You can also try telnet to the IP address of the SQL Server (you can take the address you used originally and find the IP address of it using a Command Prompt such as ping abc-db.illiad.oclc.org. That would come up either 206.107.45.228, 206.107.45.230, or 206.107.45.233. Then in this example, you could telnet to 206.107.45.230 using these options.
telnet 206.107.45.230 1433
telnet 206.107.45.230 1344
If those do not work, either your site is blocking your ports or we do not have your IP address on our Firewall.
4. Another test for any other port would be to change the port number. If you are using Odyssey and having issues then you would telnet to port 7968 and it would be your Web Server you are connecting to as:
telnet abc.illiad.oclc.org 7968
You should communicate your issues and your results with OCLC Support.