I didnt find any gatekeeper covered topic in the Vol1 or vol2 workbooks.I have a good knowledge on how GK works , but do I need to study how to configure the GK deeply when I am preparing my CCIE voice .
Gatekeepers are covered in both workbooks. Please look in the Call Routing sections and you will find the topics listed there. If you have any further questions, please let us know, and good luck with your studies!
Thank you Ms.Josh