The reason NEC has there system pickup from the back to front is so you won't pick up on an outside call coming in at the same time ,if you want put line 1 in line three position,line3 in line 1 ,the newer NEC are programmable from the phone to either access intercom or CO by the user, check the users guide if you have one ,and the system is programmable from a phone ,you dont have to have a laptop,I'm sure someone at Sundance would lead you through reprgramming via telephone for a nominal fee,and maybe even sell you a users guide, or call a local proffessional,what you want programmed is easy,if you know what you are doing.
