The Door County Medical Center in Sturgeon Bay says on Sunday, beginning at 10AM, its main telephone line will be down for up to four hours to allow for an upgrade to the telephone system. In its place, a temporary phone line will be available should someone need to contact the hospital urgently. The temporary number is 1-920-743-5526. Messages will be routed to the correct person, but calls will not be transferred. The temporary line is not intended for general or routine calls and will only be active while the main line is not in use on Sunday.