What about webrtc solutions? We currently have native single party calls working that interface with either webrtc in the browser or another ios device with ve

What about webrtc solutions? We currently have native single party calls working that interface with either webrtc in the browser or another ios device with very little if any chop. This runs very well on iphone 4s+ and ipads. We are implementing multicall this month and very optimistic. Are there any special problems you ran into doing multi call over ios?