Used Cisco 1600 Series Routers:  WAN Interface Cards

Part # Cisco WIC-1T

Product Description: 1-Port Serial WAN Interface Card...

Part # Cisco WIC-1B-S/T

Product Description: 1-Port BRI(S/T) WAN Interface Card...

Part # Cisco WIC-1B-S/T-LL

Product Description: 64-kbps of ISDN leased line support...

Part # Cisco WIC-1B-U

Product Description: 1-Port Serial w/T1/Fractional T1...

Part # Cisco WIC-1DSU-56K4

Product Description: 1-Port Serial w/4-Wire 56 Kbps...