ating devices, usually on a relatively small Large Scale Integration. (Describes a complex inte- geographical area. Many techniques are used to grated circuit semiconductor component.) allow each device to obtain use of the network.) Listener SideTone Rating. (Measure of room noise Link Access Protocol. sidetone effect.) Link Access Protocol Balanced. (X.25 protocol.) Line Terminating Equipment. (Also called Line Ter- Link Access Protocol Digital. (ISDN standard.) minal Equipment. Equipment which terminates a Link Access Protocol for Modems. (CCITT V.42 transmission line.) standard.) LASER Light Amplification by Stimulated Emission of Radiation. (Laser is also used to refer to a compo- Multiple Access. nent.) Media Access Control. (IEEE standard 802. for ac- Local Access and Transport Area. (Area of responsi- cess to LANs.) bility of local carrier in USA. When telephone cir- Multiplexed Analogue Components. (Television cuits have their start and finish points within a LATA transmission system.) they are the sole responsibility of the local telephone Multiple Association Control Function. 62/12 Glossary Metropolitan Area Network. MOSFET Metal Oxide Semiconductor Field Effect Transistor. Manufacturing Automation Protocol. (A transistor made from MOS.) MASER Microwave Amplification by Simulated Emission of MOTIS Message Oriented Text Interchange System. (ISO Radiation. equivalent of a message handling system.) Metropolitan Area Trunk. (A cable system which is Memorandum of Understanding. used to reduce crosstalk effects in regions where Microwave Pulse Generator. (A device for genera- there is a large number of circuits between ex- ting electrical pulses at microwave frequencies.) changes.) Ministry of Posts and Telecommunications. (Japan.) Mast Antenna Television. (Or Master Antenna Tele- Management System. vision. Local cable television system for a hotel or Mini Slotted Alternating Priorities. (Multiple access apartment block.) technique.) Mission Control Centre. Main Switching Centre. (Part of the switching hier