In packet switching, an interface that (a) is at the frame level of transmission between the data terminal equipment (DTE) and the data circuit-terminating equipment (DCE), (b) is associated with the exchange of packets contained in frames, and (c) is used for local error control. See also  data circuit-terminating equipment,  data terminal equipment,  error control,  frame,  interface,  level,  packet,  packet switching,  transmission.