Voicemail Pro RFA IP400 upgrades a 4 port voicemail lite to a 4 port voicemail
pro. Voicemail pro includes graphical user interface, auto attendant, call queuing,
campaign manager, and call recording personal numbering and capacity for up
to 30 ports.

IP400 Voicemail Pro RFA 2 adds an additional 2 ports to the IP400 Voicemail Pro
RFA.

IP400 Voicemail Pro RFA 4 adds an additional 4 ports to the IP400 Voicemail Pro
RFA.

IP400 Voicemail Pro RFA 8 adds an additional 8 ports to the IP400 Voicemail Pro
RFA.

IP400 Voicemail Pro RFA 16 adds an additional 16 ports to the IP400 Voicemail
Pro RFA.