Put the DDL key on attendant and put a 2616 dn on do not disturb at the attendant. Works good for internal lines and external lines coming in ,but There are other scr lines on that 2616 dn and are still ringing in to the phone. Am not supposed to have other scr lines on a phone or is there a cls feature i need to to pu in place or is this a system problem? Thank You in advance for any help.