ADC CUDA 3 Administration Manual page 609

Transmission
Medium
Transport Stream
Trivial File-Transfer
Protocol (TFTP)
Trunk Cable
Type/Length/Value
(TLV)
UCD
UDP
UHF
Ultra-High
Frequency
Upstream
Upstream Channel
Descriptor (UCD)
User Datagram
Protocol (UDP)
Cuda 12000 IP Access Switch CLI-based Administration Guide
The material on which information signals may be carried; e.g., optical fiber,
coaxial cable, and twisted-wirepairs.
In MPEG-2, a packet-based method of multiplexing one or more digital video
and audio streams having one or more independent time bases into a single
stream.
An Internet protocol for transferring files without the requirement for user
names and passwords that is typically used for automatic downloads of data
and software.
Cables that carry the signal from the head-end to groups of subscribers. The
cables can be either coaxial or fiber depending on the design of the system.
An encoding of three fields, in which the first field indicates the type of
element, the second the length of the element, and the third field the value.
See Upstream Channel Descriptor.
See User Datagram Protocol.
See, Ultra-High Frequency.
The range of the radio spectrum is the band extending from 300 MHz to 3
GHz. The wavelengths corresponding to these limit frequencies are 1 meter
and 10 centimeters.
The direction of the data flow from the subscriber location (CM) toward the
head-end (CMTS).
A MAC management message transmitted by the CMTS Adapter Module at
a configured period of time. A UCD defines the characteristics of an
upstream channel including the size of the mini-slot, the upstream channel
ID, and the downstream channel ID. It also defines channel parameters and a
burst descriptor. UCDs are transmitted for each upstream channel.
In conjunction with IP, UDP provides unreliable connection-less datagram
delivery service. UDP can address specific protocol ports as a destination
within a given host.
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