How do I find out which port I need for SAP PPM NWBC

Hi,

I'm a master student and I'm writing my master thesis about SAP PPM.
Now I have the Hostname and the Domain for the NWBC, so the URL is

http://<hostname>.<domain>:port/nwbc

If I use the port 50000  I get to the start page of the SAP Netweaver Application Server Java.

Is there a standard port for PPM or how can I find out which port I have to use?

Thank you for your help