VoIP Phones - 3cx

From AAISP Support Site

3cx.png

3CX is a software phone for Windows, iPhone and Android. See www.3cx.com/voip/softphone

This SIP software on an iPhone just works.

Feature Notes
Tested on FireBrick SIP Server Yes
IPv6 Support Possibly not
Versions Tested iPhone

Notes

 

  • Disable STUN by deleting the stun server settings
  • Disable NAT helper
  • Disable echo cancellation
  • Force a-law audio (probably unnecessary).
  • Also works over 3G (dependant on signal!)

also see Blog post