High Efficiency Advanced Audio Coding

Designation for the fundamental hybrid mode of an optical fiber.

A device that reads, writes, and/or erases data on a storage medium.

See cable headend, headend.

The function that generates management information and empty bus slots at the point on each bus where data flow begins.

A collision that occurs on a communications channel when two or more users begin to transmit on the channel at approximately the same instant.

1. A central control device required by some networks (e.g., LANs or MANs) to provide such centralized functions as remodulation, retiming, message accountability, contention control, diagnostic control, and access to a gateway.
2. A control center of a CATV system, where incoming signals are amplified, converted, processed, and combined into a common cable for transmission to customers. The headend usually… (Read More →)

The portion of a message that contains information used to guide the message to the correct destination.
Note: Examples of items that may be in a header are the addresses of the sender and receiver, precedence level, routing instructions, and synchronizing bits.

A 16-bit cyclic redundancy check (CRC) check sequence (CS) that is derived from bits from the first 8 octets (excluding flags) of a UIH format packet. [T1.509-1995]

Synonym E region.