Cisco DNCS System Release 2.7 3.7 4.2 Guía De Instalación
Glossary
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N
NVM
non-volatile memory. Memory that holds its content when the device it is associated with is
turned off.
O
OSM
Operating System Manager. A method for staging DHCTs. In the OSM method, the DHCT
receives System Information (SI) and a type-specific user-to-network configuration (UN-
Config) message, which includes a table of contents (TOC) file, from the DNCS. The DHCT
reads the contents of the TOC file and compares the checksums of the currently loaded image
files against the file information in the TOC file.
P
PIN
personal identification number. A password used for identification.
PowerKEY® Conditional Access system
Cisco’s registered trademark name for the hardware and software encryption and decryption
of digital signal. Uses secret key, public key, and private key data to secure the digital signal.
PPV
pay-per-view. Service for which subscribers are charged a user fee for individual program
events. See also IPPV.
provision
The process of preparing a device or service so that the DNCS recognizes the device, which
allows the device to operate properly.
PVR
See DVR.
Q
QAM
quadrature amplitude modulation. A frequency modulation technique primarily used for
program audio and video. QAM supports data rates from 27 Mbps to 36 Mbps.
QAM modulator
A device that uses QAM techniques to modulate a digital signal onto an HFC network to
deliver voice, video, and data to a DHCT.