KXTVM50
Comes equipped with 2 ports, capable of handling 2 calls at once. This entry level system is ready to satisfy small scale voice mail needs right out of the box and can be expanded to 6 ports, handling 6 calls at once. Recording time can also be doubled by adding a KX-TVM524 4-Hour Recording Time Expansion Card.

Features
2 to 6 ports and 64 mailboxes
8-hour system recording time (max.)
e-message
Voice mail menu on the LCD
Custom Service
Live Call Screening (LCS)
Two-Way recording
Two-Way transfer