The KX-TVA50 supports up to 64 mailboxes and initially is set up for 2 ports. You may expand up to 6 ports and 8 hours of message storage by adding cards to your Panasonic Voicemail System. Remote Programming may easily be set by adding an internal modem or LAN card. You may add voicemail to email integration by adding the KX-TVA594 LAN Card
Supports up to 1024 mailboxes and initially is set up for 4 ports.
You may expand up to 24 ports by adding the KX-TVA204 4 Port Expansion Module. Remote programming may easily be set by on the KX-TVA200 by adding an internal modem or LAN card (KX-TVA296)