In some kind of genius stroke of luck this actually worked!!!!
This maybe the fix of all fixes for those who think its your router or cable provider etc ... you may just have to enable your IPSEC, PPTP, L2TP through your routers admin page (192.XXX.X.X) click save and log out and reset your airvana through the pin hole!! - So far all in the green for past 24hrs (I do get the occasional flashing mobile light but it lasts maybe 30 sec and than connects again - during this process my signal does not drop out though - I am guessing its a normal process from time to time -
The Airvana does work - full bars, no more dropped or missed calls, and I dont have to stand outside my balcony to use the phone! Just in time to bc Sprints service is getting worse before it gets better with this LTE stuff (there are over 70 towers in my county that need updates - no wonder why so many people are complaining - my drop call count has never been so bad