Volume Drop during Eur Amer session

What does it mean if there is a substantial drop in volume. It is right in the middle of the power hours for cable but after a huge rally, volume has tapered off for past hour. What does this mean or signal???

Volume is a figure generated by your broker and will only represent a tiny fraction of the market. Forex is such a fragmented market that it is impossible to get an accurate volume figure on the spot market. I believe such figures may be available in the futures market.