Single Port Line Router/ Telephone Router/ Phone Router/line Selector/telephone Selector/ Telephone Switch/phone Switch GOOTONY 1.Shipped by ePacket (USPS) and it will takes about 4-14 days with 100% effective tracking information!! 2.The phone router could connect two different outside lines. 3.Use both lines at same time.Carrier select & Line powered. 4.Not miss any calls from two lines with one telephone. 5.Force select router function.