NT IP Phone support

Have an i2007 which is close is functionality to i2004. Same with 1140 set.

Got it up and running no problems…but 40% of calls get no ringback or voice path, 40% get ringback and no voice path, 20% I get everyting including voice!

thoughts on how to debug?

I plan to load up my 1140 with the beta SIP f/w tonight