Just a lil question. I am close to purchasing an 1841 for a network project and I am looking at the Cisco configuration tool. I notice two different options for T1 WIC cards:
VWIC-1MFT-T11-Port RJ-48 Multiflex Trunk - T1
VWIC2-1MFT-T1/E11-Port 2nd Gen Multiflex Trunk Voice/WAN Int. Card - T1/E1
Are the only differences in these two that the second could possibly handle voice as well as data? Why does the first specify RJ48 and the second does not? If not RJ48, what would it be? serial? Also, when I am looking at these routers, what is the difference between a NM slot and a WIC slot?