Presumably the calls will flow elsewhere in the world after 0100 UK time, most likely DEL... The remaining call centres after JAX closes by the end of the year will be NCL, MAN, BRE, BTS, JNB, DEL and HKG.
As far as JAX staff have been advised, where the calls will go has not been finalised as yet. DEL are taking a fair proportion of our calls already though...