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.
Firewall & Security
- You will also want to set up firewall rules, as per the VoIP Firewall page.
- Also see the VoIP Security page for information about securing your VoIP service.