missing commands in Cisco IOS

So I am trying to help a downstream ISP get BGP up and running. It seems that prefix-list and peer shutdown functions don't exist on there rev. The strange thing is that their rev is newer than mine. me 7206 IOS 11.1-19(CC) them 3640 c3640-i-mz.112-18.P is the flash image So what ver should they tell there vendor to get them ??