Cisco Model D-PCG1000 PowerKEY CAS Gateway User Guide

Glossary

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DHCT

Digital Home Communications Terminal. Our digital set-top that is two-way capable for

interactive services. See also Explorer.

DNCS

Digital Network Control System. A computer server that monitors and controls the DBDS

network elements; located at the DBDS headend or at a remote site.

DVR

digital video recorder. A device that records television programs without the use of videotape

and saves them to a hard drive located inside the recorder. The programs can then be

deleted, saved to a tape, or left on the hard drive. A DVR allows you to pause live broadcast

for interruption, such as creating your own instant replays. Also known as PVR.

ECM

Entitlement Control Message. System-wide information that “unlocks” an encrypted service

by transmitting control words. Each ECM is unique for each service. An ECM enables

cryptographic partitioning so that different Entitlement Agents (EAs) can selectively grant

access to their own services.

Element

Refers to DBDS devices, groups of devices, and software components that must be

“provisioned” from the DNCS. Also known as system components.

Explorer®

Our registered trademark name for the Digital Home Communications Terminal (DHCT).

Also known as a set-top box.

FAT Channel

See BFS.

FTP

File Transfer Protocol. A method used to exchange files between computers on a network or

the Internet using the TCP/IP protocol.

GQAM

gigabit quadrature amplitude modulation. A QAM that provides up to sixteen 6 MHz outputs

while occupying only one unit of rack space. See also QAM, MQAM.