pia,
all those are NSS parameters.. Basically, how many times a paging shall be repeated if there was no answer to the first paging.
And how much delay between two repetitions.
Paging area : the first paging is send over the LAC for CS, and RAC for PS (except with “smart paging”, where the paging is sent at cell level initially -to be confirmed-)
In case of no answer, the repetition can be broadcasted still at LAC level, or on all LAC of network, or on several BSC, etc.
If you find someone who works at NSS level, just ask, he can explain all.
regards
pix