Minipax is newest generation of Vidosystem Softphone. Our engineer had successfully recode sip engine to produce more robust, small application, better nat traversal sip softphone.Minipax NOW support SIP tunneling. SIP tunneling works where clients firewall blocked or on a country where voip is blocked. SIP tunneling also give more security to voipMinipax support hold function, mute function, mic/spk volume control, transfer call, forward call, call recording, auto login to web billing CDR, call history, address book, balance display, fully skinable look n feel, available for private label and logo.Minipax able to capture credit or balance from sip messages (tested with porta billing/porta switch).Minipax is designed for ITSP which need customized sip softphone. Version 2.8.3 support new skin and fix couple bugs.