I think Michele missed the 1 AGCH, but otherwise I agree with both of you. Except that… there is more than one paging command in one PCH block, isn’t it?
I think a typical assumption is 3 commands / block (due to a mix of IMSI or TMSI paging method). It has been a long time i didn’t do this kind of stuff, so if you can confirm what I’m saying, that’ll make me feeling less forgetful :))