I am looking at adding to my CCNA with the CCNA Voice. Whe I look into it it appears that the 642-436 serves two purposes; both for the CCNA Voice certification and also 1 of 5 exams required for the CCVP. Can someone confirm this and also does anyone have any recommendations besides just going for it. I was looking at also working on the CCNP and am currently studying for the BSCI 642-901 exam. Would appreciate any comments and recommendations from anyone that has already or is also thinking like me of traveling down this road.