In LD 117 you define the Host Name of the Call Servers, their E-LAN IP addresses, E-LAN subnet mask, and a default route for unclassed routing that points to your E-LAN gateway.
at this point, your best friend is the Input/Output Administration guide. Open it up to LD 117.
You will need to use the following commands: NEW HOST, CHG MASK , NEW ROUT, ENL ROUT, CHG ELNK ACTIVE, UPDATE DBS