VoIP Phones - CSipSimple
- IPv6 is supported, although the option is a little hidden. Tap on the tower of 3 squares top right, select Settings, tap on the tower again and select Expert mode. Under the Network menu will now be Use IPv6. Also there is RTP port if you wish to specify that too.
Having said that, your author has never seen a connection actually use IPv6, and configuring the tablet to just have an IPv6 address makes registrations fail. (This is with version 1.02.03 r2457)