I have Comdial DXP questions also. How do I ensure that the volume is high enough to hear incoming Intercom calls ringing in? Also, how do I get access to the Switch? I have a 3.5 floppy with an .exe file on it but I don't know if it is related because I do not have a manual or any information on how to get into the system (i.e. via laptop). Please help!!!