Cisco Model D-PCG1000 PowerKEY CAS Gateway User Guide

Glossary

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SAP

Second audio program. This feature allows cable service providers to offer subscribers a

second audio option for their programming. The other option may be a different language or

another audio track, such as the weather or a sports event.

SARA

SA Resident Application. The set of operating programs that is “permanently” loaded into the

DHCT. These programs are immediately available to the subscriber upon activation of the

DHCT.

SARA Server

SA Resident Application (SARA) Server. Also called the "Application Server". A computer

workstation and server used to execute our application programs. These programs provide an

interface for downloading application data to DHCTs. The SARA Server works in conjunction

with the DNCS and the two computers share a common database.

service gateway

Front-end gateway for the delivery of service through the DBDS. Provides DSM-CC signaling

as required to establish network resource for service delivery.

service group

A QAM modulator (or a cluster of QAMs) that is installed for delivering on-demand services

to an associated population of DHCTs. The association of a DHCT to a specific service group

is determined by first identifying the QAM modulator (or a cluster of QAMs) that a DHCT

can receive.

Session

See CF session.

shared key authentication

A type of authentication that assumes each station has received a secret shared key through a

secure channel independent from an 802.11 network. Stations authenticate through shared

knowledge of the secret key. Use of Shared Key authentication requires implementation of the

802.11 Wireless Equivalent Privacy algorithm.

System information. A standard set of tables providing the data necessary for a navigation

device to discover and access services.