Recently I was asked to build up some T1/Pri's to integrate these two system together. Ascom is telling me that the circuits need to be ESF, B8Z's E&M Wink start. That's not a problem, The only thing I am worried about is they are asking me for NI2 protocol. I can't find anything on this protocol. Have any of you set up an Ascom with Definity? I currently have a Vocera system connected to one of my campuses and it was a simple T1/Pri config. Thanks for any input.