I failed the exam on gatekeeper and gateways today, I managed to get only 600 and passing score was 825. I used the student guide from knowledgenet : " implementing cisco voice gateways and gatekeeper"
despite having read this book twice, I really think that I had not any chance of passing this exam. This book is completely useless for this exam.
So for those who passed it I would really appreciate your help if you could point me to the material you used.