The KX-NS500 has advanced features and starts from 6 analogue trunks and 18 extensions, up to 288 extensions with an Expansion Unit.
The KX-NS500 is also a unified communication system which has rich IP features such as mobile linking, integrated voice mail and e-mail, instant messaging (chat), and presence information.

It can also use built-in applications, such as a call centre solution, mobile solution, and voice mail system, to provide more efficient work and increased customer satisfaction.