Epygi makes one of the most robust solid-state IP PBX appliances. With over a decade of performing consistently well, and many reseller partners in the US and Latin America, Epygi is a IP PBX to consider when solid state and reliability are an issue. Epygi with headquarters in Plano, Texas, designs and manufacturers IP PBX appliances that serve primarily the SMB and SOHO markets. Epygi markets a very complete line of feature-rich IP PBX units along with gateways that bridge IP and traditional public network telephony. Using its own IP PBX call manager software based on the SIP standard, Epygi combines telecommunications network knowledge with emerging computer telephony protocols and state of the art electronic design to deliver a robust Voice over Internet Protocol utility. ABP sells Epygi to resellers but also to some managed services providers that have chose to provide SIP trunks but push PBX intelligence to the edge.