Thank you for the response. I almost understand it. I use NW to determine “actual” load in trunk groups where I have an “all trunks busy or ATB” status during the measured hour. An “ATB” condition creates an offered load consisting of the normal random arriving calls as well as “peaked” or non-random retrial calls. Your extended ErlangB allows a selectable retry percentage which I assume is subject to the same random and peaked calling simulated loads?
Obviously, I am having a problem understanding the difference between retrial generated loads and peaked calling loads.
Any help available?