unassign line 5 from paging and use as regular line

[lunknowl]

hi i think the partner r509 setup line 5 for paging, how can i unassign that line and use as regular line?
i read on manual and search in forum someone say use #617 or press a Clear button, just want to make sure
1- how to set up #617 ( just go to #617 and assign to different line, line 34 maybe)
2- press clear button 4 colum 2 row down, is this permanently?

 

[TouchToneTommy]

When you do the procedure in the manual, is there actually a line listed for Loudspeaker Paging?
It isn't assigned by default, so unless you blundered onto this program code, it probably isn't assigned.
At any rate, yes, press the Clear button to remove any line that is assigned in the program code.