I'm trying to do CAC calculations using locations and have found a contradiction. There are several postings like the one at: http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_implementation_design_guide_chapter09186a00806e8c1e.html
These postings state that you simply divide the amount of bandwidth you have set aside by the amount used in a codec to discover how many calls can be placed over that link.
However, I've also found a number of postings like the one at: http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_administration_guide_chapter09186a00801ec5ac.html#59667.
These postings state that since audio has 2 streams (one each way), and video has between 4 and 6 streams, you need to take the amount of bandwidth afforded by a codec and double it to decide how many calls can be made over the WAN link.
Which concept is correct?