Panasonic KX-NS300 Smart Hybrid PBX cost effective legacy and IP communication system for small and medium sized companies flexibly configured and expanded according to your needs. 6 analogue trunks and 18 extensions, up to 288 extensions with an Expansion Unit. unified communication system which has rich IP features such as mobile linking, integrated voice mail and e-mail, instant messaging (chat), and presence information. built-in ACD and in-Skin Voice mail and UC. a foothold in 2-100 extensi