Disabling analog port for outbound 1

[xtreme69]

I'm sorry, I'm sure this is a simple question but I'm very green to phone systems in general. How can I disable, or can I disable, an analog line port from being used as an outgoing call line? I don't want it to be used in the pool of lines available for making outbound calls, so it only accepts inbound. Can this be done on a 3000?

 

[tripfall]

login to NetSet as administrator
go to tab to it
go to extension list
highlight "*0001 Line Card Ports" and click modify
highlight the ports you don't want to use and click the arrows pointing to take them from the extensions in use