cpu=the processor
sli8=8 port analog station card
esi8=8 port digital station card
prt=pri (this is your trunks)
ecr=relay/paging card
vms8=8 port voicemail with a hard drive

not listed but you will have it too,
clkg=clock card (on the cpu) for the pri timing

programming can be done via any digital phone with a display. or you can get a mifm card and the sat software to do it via a pc.