Definitions Of Terms - Motorola OM 1000 Installation And Operation Manual

Glossary-3

Definitions of Terms

10Base-T
The IEEE standard for twisted pair Ethernet. Uses telephone wiring and standard RJ-45
connectors. It is wired in a star configuration and requires a hub.
BOOTP
Boot protocol. The communication protocol used to transfer initialization information between
digital headend network elements and a central server. At power up, network elements issue a
BOOTP request. The BOOTP server receives the request and responds with a BOOTP reply
that specifies startup information and operating parameters for the requesting device.
BOOTP Reply
Single-packet, multi-field boot protocol message transmitted in UDP by a BOOTP server to
provide a boot image to a network device (BOOTP client).
BOOTP Request
Single-packet, multi-field boot protocol message transmitted in UDP by a network device
(BOOTP client) to request a boot from a BOOTP server.
Conditional Access Table (CAT)
A table carried in the PID1 stream of a transport multiplex that lists the PID numbers of all
EMM streams in a transport multiplex and indexes each EMM stream to an EMM provider ID.
DAC 6000
Motorola Digital Addressable Controller 6000 used for controlling digital cable terminals and
digital wireless terminals. The name was changed from ACC 4000D in late 1997.
Forward Error Correction (FEC)
An encoding technique applied to data before transmission to reduce the number of errors
introduced by transmission. The receiving device decodes the FEC to recover the original data.
Data is formatted with extra error detection and correction bits at the sending end of a
transmission. The received bits are used to detect and correct transmission errors.
Headend Configuration Tool (HCT 1000)
A Motorola PC-based tool for provisioning network devices in a digital CATV headend or
broadband interactive network. The HCT 1000 helps set up embedded code images, assign IP
addresses to network devices, and set up start-up parameters.
Initialization
The process by which digital headend network elements obtain configuration information and
operating parameters at power up. This confirms that all indicators and constants are set to
prescribed conditions. Data is loaded into a new set-top to customize its operation for use by a
customer in a particular cable system. Typically, during this process the controller sends reset
and initialize commands along with configuration and terminal control bytes.
Integrated Receiver Transcoder (IRT 1000, IRT 2000)
Motorola digital headend equipment that receives digital satellite signals and remodulates data
from QPSK to QAM IF for cable plant transmission.
Internet Protocol (IP) Address
This public standard address is used for packet- and connection-type communications.
OM 1000 Installation and Operation Manual