Hello Ezra,
Your comment makes interesting reading and provokes thoughts about how one should dimension lines or trunks.From your explanation of lines and trunks,it is clear that the probability of lost calls is different for each case.
I’m made to understand that a trunk faces ROUTERS at each end and has thus many more possible combination of routes.Do you then expect, for the same traffic, a TRUNK to have a higher GOS than a LINE ?
Thanks for that thought-provoking contribution !!