*astTECS IPPBX which is the new generation technology in PBX world and also used widely in developed countries, IPPBX to help you easily transition from simple telephony to feature-rich UC solution. Connect with various interfaces. *astTECS IPPBX will connect all your remote offices through VOIP. An open source based True IP PBX. A product with future technology Ideally suitable for an organization looking for many features like IVRS, Distribution office, Mobile extensions, Reduced maintenance cost etc. It starts with minimum of 25 extensions and can go up to 3000 extensions.