Can i use the 3845 as RAS if i installed the (accept calls)
VWIC2-2MFT-T1/E1
2-Port 2nd Gen Multiflex Trunk Voice/WAN Int. Card - T1/E1
or
NM-1CE1T1-PRI
1-Port Channelized E1/T1/ISDN-PRI Network Module
and what is the difference between the two Cards?