No answer callback for callee

I had mentioned it under a different issue but opening a new one to track it better.

I was able to get my own app (voice only) working before the API change a few days ago.

I am trying to port my app to the new API, but I could not get it working. The caller is getting the answer callback session.on('answer', function () {}) but callee is not for some reason.

I am making sure that I call session.call() with isInitiator=false on the callee side before the caller calls it with true. I am using Android.

@alongubkin do you have any idea why answer event is not fired for the callee? Demo client doesn't have this problem.. so both caller and callee gets the answer callback there. So I am puzzled. But demo client has a different problem, i.e. audio ( #81 ). So my app is audio-only app so it is different than demo client in that. Not sure if answer callback is an issue with audio-only scenario or if I am doing something wrong.