This phone system is capable of 6 lines and 16 extensions. It is voicemail compatible but not caller ID compatible. This package includes 1- M7310 telephone, which acts as the receptionist station and programming telephone, 2- M7208 6 line telephones and the complete voicemail system. The voicemail includes Auto Attendant, dial by last name directories, individual mailboxes (24), Custom Call Routing and much more. This package is Like-New.