7/19/2010 iSip 4.6 release, support IOS 4 background tasking.
6/28/2010 Private push server vmware image avaliable for downloading. Please make sure you set network to bridge mode in order to let your iPhone to conect this server.
6/18/2010 Private push server virtualbox image avaliable for downloading. You can run this push server inside virtualbox on any platform: Windows, Linux or Mac. Please make sure you set network to bridge mode.
iSip 4.5 has made further bug fixes:
(1) Fixed push call crash with VAD disabled
(2) Fixed account with username has '*' character can't register
(3) Allow private push server use self signed ssl certificate
iSip 4.4 has improved the push notification and some other service! Let's enjoy it!