The NEC DSX40 Business Phone System starts out with an initial configuration of 4 incoming lines X 8 digital station ports X 2 analog station ports with the capability to expand to 8 incoming line X 24 digital station ports or18 analog station ports  The DSX40 is a great phone system for small businesses that doesn't need voice mail but need answering machine capability.  NEC DSX40 Business Phone System Deals and starter kits are available.
  The NEC DSX80 Business Phone System hardware bundles start with 8 incoming lines X 4 digital stations, to  8 incoming lines X 8 digital stations. All NEC DSX phone system bundles support a 16 port digital station card.  This means that your new NEC DSX80 business phone system has the capability to grow to 16 digital stations with the addition of a cable and a telephone.  Hospitality phones available.
The NEC DSX Intramail Pro with Email Integration from CompuTelCo.com automatically sends an email notification when a Subscriber Mailbox receives a new message. The email the NEC DSX Intramail system sends to you can optionally include the recorded message as a wav file attachment. To hear the message, the voicemail recipient double-clicks the wav attachment to have the message play in their wav player. Email Integration uses SMTP (Simple Mail Transfer Protocol) to deliver messages to your email account. It does not provide synchronization - the email account and the voice mailbox operate independently. For example, deleting the voice mail message does not automatically delete the email and visa-versa