I was wondering if someone can help me out here, I got a call about a Panasonic that the customer tells me that it is a Panasonic 8ext digital super hybrid system.I have worked on the old kxt1232 and some dbs but have not worked on this hybrid systems.My questions is can this phone system handle 16 exts ? The customers tells me that they have 8 lines and 8 extensions. Can an additional sta card be installed ?