space-division switch
1space-division switching — 1. a method whereby a switch utilizing a physically separated set of matrix contacts is used to determine single transmission path routing. 2. The switching of inlets to outlets using space division techniques …
2Space Shuttle Solid Rocket Booster — The Space Shuttle Solid Rocket Boosters (SRBs) are the pair of large solid rockets used by the Space Shuttle during the first two minutes of powered flight. They are located on either side of the orange external propellant tank. Each SRB produces …
3Space Shuttle Challenger disaster — For more information about the final mission and crew of the Challenger, see STS 51 L. Space Shuttle Challenger s smoke plume after the in flight breakup that killed all seven crew members …
4Nonblocking minimal spanning switch — A substitute for a 16x16 crossbar switch made from 12 4x4 crossbar switches. A nonblocking minimal spanning switch is a device that can connect N inputs to N outputs in any combination. The most familiar use of switches of this type is in a… …
5Class 4 telephone switch — A Class 4, or Tandem, telephone switch is a U.S. telephone company central office telephone exchange used to interconnect local exchange carrier offices for long distance communications in the Public Switched Telephone Network. A Class 4 switch… …
65ESS switch — The 5ESS Switch is the Class 5 telephone electronic switching system sold by Alcatel Lucent. This digital central office telephone circuit switching system is used by many telecommunications service providers. HistoryThe 5ESS Class 5 Switch first …
7Packet Switch Stream — In the UK, PSS, was an X.25 based packet switched network, provided by the British Post Office Telecommunications and then British Telecom from 1980, onwards. After a period of pre operational testing with customers (mainly UK Universities and… …
821st Space Operations Squadron — Infobox Military Unit unit name=21st Space Operations Squadron caption= 21st Space Operations Squadronemblem dates= 19xx Present country= United States allegiance= branch= United States Air Force type= Combat support role= Satellite Control size …
9Mutual Ownership Defense Housing Division — The Mutual Ownership Defense Housing Division of the Federal Works Agency part of the United States government, operating from about 1940 to 1942 under the leadership of Colonel Lawrence Westbrook, was an attempt by the United States Government,… …
10Wavelength-division multiplexing — For the radio station, see DWDM FM. Multiplex techniques Circuit mode (constant bandwidth) TDM · FDM · SDM Polarization multiplexing Spatial m …
