We include InProtect, the NEC extended five year warranty program. Only basic parts are listed, many other options available, including external paging speakers, Direct Inward Dialing, Tie Lines, ISDN BRI, etc. This unit gets mounted on the wall and needs a dedicated electrical outlet. A larger 192 port KSU is also available. One Required Surge Protection is suggested for electrical as well as outside phone lines.
System needs to be on a separate breaker with outlet near by.
One Required for the first 8 outside lines Add 1 more if more than 8 outside lines. Or install a 4 port card instead Minimum of one Allow for some growth. Ports for 8 phones included in the KSU already, so add 1 or 2 more IF you have more than 8 phones. Allow for limited growth. 16 Button Digital Speakerphone with Display Also available in soft white One display phone needed for programming.