Ans. The entire network architecture of the Scientific-Atlanta’s(CISCO’s) digital system that ultimately provides signal to and from a subscriber’s DHCT(set-top box). It consists of five areas:
Main components of a DBDS Architecture:
Ans. It is considered to be the brain the DBDS. It is a computer server that is used to monitor and control the DBDS network elements. It is generally located at the headend.
Ans. It is an integral part of the communication System. ADD MORE
Ans. A workstation dedicated to applications that are made available to the DHCT’s. Interactive Program Guide is an example of an application residing on the application server. LIST ALL APPLICATIONS
Ans. The piece of equipment that compresses video and audio data and outputs a multiplexed MPEG Transport Stream. Explain more
Ans. It is the transmission product that provides MPEG processing including statistical multiplexing,, transrating, interface conversion, digital program insertion and more. Explain it in an easier way.
Ans. A device that uses QAM techniques to modulate a digital signal onto an HFC network.
CQAM, GQAM, RFGW are just different versions of QAM Modulators. CQAM being the oldest, and RFGW being the newest.
Ans. It is a piece of equipment that allows the cable television operators to offer high-speed Internet access to home computers. It sends and receives digital cable model signals on a cable network. It receives upstream signals from a user’s cable modem, converts them into IP packets, and routes them to the Internet Service Provider for internet connection. It can also send signals to the modem, known as downstream signals.
IS QPSK A DEMOD????
Ans. Another name for a Set-top box.
Other Useful terms to know:
bfsServer (Broadcast File System Server)
bossServer (Business Operations Support System Server)
bossDiagnosticServer (Business Operations Support System (BOSS) Diagnostics Server)
bsm (Broadcast Segment Manager)
caaServer (Conditional Access Authority (CAA) Server)
camAm (Conditional Access Manager Authenticated Messaging)
camAuditor (Conditional Access Manager Auditor)
camEx (cam Exclusive Sessions)
BFS to set tops that are candidates for the Fast Refresh List.
camPsm (cam Program Segment Manager)
camTedChecker (cam Transaction Encryption Device (TED) Checker)
dncs-snmpd (Simple Network Management Protocol for the DNCS)
drm (Digital Resource Manager)
dsm (Digital Session Manager)
EARS (Emergency Alert Receiver Server)
emmDistributor (Entitlement Management Messenger)
gemServer (The VQE Manager application)
hctmCache (Home Communications Terminal Manager Cache)
hctmConfig (Home Communications Terminal Manager Configuration)
hctmMac (Home Communications Terminal Manager Mac Addressing)
hctmProvision (Home Communications Terminal Manager Provisioning)
idm (Inventory and Directory Manager)
ippvManager (Impulse Pay-Per-View Manager)
ippvReceiver (Impulse Pay-Per-View Receiver)
logManager (Logging Manager)
MMMServer (Multi-Media Message Server)
mgrUIServer (GUI Server Manager)
Apache-http logs are found in /var/apache2/logs
tomcat process logs are found in /usr/local/tomcat/logs
osm (Operation System Manager)
pkeManager (PowerKEY Element Manager)
and so on.
ResAppServer (Resident Application Server)
saManager (Service Application Manager)
siManager (System Information Manager)
smMix (System Information Manager)
SseManager (Server-Side Entitlement Manager)