incoming terminal
21Hayes command set — The Hayes command set is a specific command language originally developed for the Hayes Smartmodem 300 baud modem in 1981. The command set consists of a series of short text strings which combine together to produce complete commands for… …
22Teleprinter — A teleprinter (teletypewriter, Teletype or TTY for TeleTYpe/TeleTYpewriter) is a now largely obsolete electro mechanical typewriter which can be used to communicate typed messages from point to point and point to multipoint over a variety of… …
23Number One Crossbar Switching System — The Number One Crossbar Switching System, or 1XB switch, was the primary urban local telephone exchange design used by the Bell System in the mid 20th century. Its switch fabric topology was based on the earlier urban panel switch system, which,… …
24Reverse path forwarding — (RPF) is a technique used in modern routers for the purposes of ensuring loop free forwarding of multicast packets in multicast routing and to help prevent IP address spoofing in unicast routing. Contents 1 Multicast RPF 2 Unicast RPF (uRPF) 2.1 …
25U.S. Carrier Group tactics — Naval tactics have played a crucial role in modern battles and wars. The presence of land, changing water depths, weather, detection and electronic warfare, the speed at which actual combat occurs and other factors especially air power render… …
26Anti-ballistic missile — An anti ballistic missile (ABM) is a missile designed to counter ballistic missiles (a missile for missile defense). A ballistic missile is used to deliver nuclear, chemical, biological or conventional warheads in a ballistic flight trajectory.… …
27Nucleus — 1) In cell biology, the structure that houses the chromosomes. 2) In neuroanatomy, a group of nerve cells. * * * 1. In cytology, typically a rounded or oval mass of protoplasm within the cytoplasm of a plant or animal cell; it is surrounded by a… …
28London Heathrow Airport — Heathrow and LHR redirect here. For other uses, see Heathrow (disambiguation) and LHR (disambiguation). London Heathrow Airport …
29Moncton — For other uses, see Moncton (disambiguation). Moncton   City   From top left: Moncton skyline at night, the Capitol Theatre …
30Closings and cancellations following the September 11 attacks — Many closings and cancellations followed the September 11th attacks, including major landmarks, buildings, restrictions on access to Lower Manhattan, and postponement or cancellation of major sporting and other events. Landmarks were closed… …
