The photo above shows all the SYSTEM components for built in voicemail with high end features, 8 local digital phones, 4 analog devices, 6 telephone lines, lightning and surge protection for lines and power, 12 ip phones (local or remote), 3 remote ip talkpaths, Unified messaging with intergration to Outlook, and battery back up power for about 3 hours. The IVX Phone System is only 8"x11"x3".