The StarTalk Flash-2 voice mail unit can start small and grow to double its capacity. It integrates seamlessly with all the Norstar systems that we sell. It only takes up one station port on the Norstar system, but provides two channels of use - two parties can access the voice mail system simultaneously (two outside callers, two internal users, or combination of each). By adding a firmware chip, the unit can double in capacity, which can be of value if business growth is anticipated. Flash 2 is for business sites with 1-24 users that can benefit from applications such as Auto Attendant and Custom Call Routing. Includes two-ports, up to 24 mailboxes, and 90 minutes of memory. Flash voice mails operate on RAM chips or "flash" memory technology and contain no moving parts.