ASIC is an application-specific integrated circuit. It breaks up the information to be transmitted into short packets of data and intersperses them using time division with data from other sources and delivered over trunk networks. Bandwidth is the part of a frequency band occupied by a communications channel. Sometimes the term is used to describe the number of bits per second transmitted in a channel. Bent pipe is a satellite communications system that transmits to an Earth station essentially the same signal it receives from another Earth station.
Bit is a binary unit of information.
Byte is a unit of 8 bits. A sequence of pseudo-random bits, known as a code, spreads the information signal over a much larger range of frequencies than is occupied by the original information signal. See FDMA, TDMA, spread spectrum. A common signaling channel is assigned to handle requests from transmitters for network capacity. Doppler effect is a change in the received signal frequency due to movement of the transmitter or receiver.