1.BizPBX is the 3rd Generation PBX System


1st Generation	2nd Generation	3rd Generation
Legacy PABX, realized voice function only	Digitized PBX, still realized voice function only but created conditions to make voice manageable	Unified communication,achieved integration of multiple mainstream service like SIP, PSTN and Skype, in which voice has become an integral part.

2.BizPBX is a simplified & all-in-one UC System


Applicable to large enterprise		Applicable to SMBs

Asterisk is a registered trademark of Digium, Inc
Skype is a registered trademark of Skype Limited.