The Multirate Symmetrical High-Speed Digital Subscriber Line (G.SHDSL) card - WIC-1SHDSL - is also a one-port interface card. G.SHDSL is a last-mile access technology which has a symmetrical data rate over one or two copper pairs.The WIC-1SHDSL-V2 interface card is the next generation one-port G.SHDSL. It supports all G.SHDSL features plus supplies two twisted pairs of wires to implement 4-wire G.SHDSL. 4-wire G.SHDSL supports sending a power failure message (dying gasp) to the central office (CO) and supports wetting current. When it is enabled 4-wire G.SHDSL provides a higher symmetrical bandwidth and longer reach.