I have been to a few a conferences and workshops about biting and this is probably the hardest behaviour to curb because they do it so quickly that it's hard to see coming! It is my most dreaded bad behaviour because it can get ugly quickly! Knock on wood...I haven't had a biter yet!

Be consistent with what you are doing and be on the same wavelength as the parents. The child will hopefully learn that biting has a consequence and the phase will likely pass quicker.