This voice-and-data-capable router can carry voice traffic over an IP network, can link small-to medium-size remote Ethernet LANs to central offices over WAN links (depending on the type of card installed in its WIC/VIC/VWIC slot) and can support connections to analog telephones, fax machines, and teleconferencing stations. Like MRPs, ASIs have two PVDM slots and a DIMM slot.