Atheling your comments are appreciated; can you expand on what you mean by ‘session to session persistance’?
I have 100% confidence in Asterisk as it is used by Australias 2nd largest ISP and apparently 16% of the global voip market. If I was to look at pure SIP proxy, where would you suggest i start looking?
For WAN balancing I originally considered a TP-LINK 4 wan router but ZS seemed to give more control.
BTW the comment ‘breaking new ground’ is too exciting to not pursue, would also learn a bucket load in the process. Prior to all this I knew nothing about linux programming, sometimes still feals like i do…