Cisco Headend System Release 2.7 Design Guide

 

8 

4024319 Rev B 

This section provides a system diagram of a typical SDV system and describes the 
following major hardware components that support it: 

 

DNCS 

 

SDV Server (or optional USRM upgrade) 

 

Gigabit Quadrature Amplitude Modulation (GQAM) Modulator 

 

Continuum DVP eXtra Dense QAM Array 24 (XDQA24) 

 

RF Gateway (RFGW) 

 

Netcrypt Bulk Encryptor 

 

Digital Content Manager Model D9900 (D9900 DCM), optional  

 

Digital Home Communications Terminal (DHCT) 

 

Gigabit Ethernet/IP Switch-Routers 

This section also provides a system diagram of an SDV system that is deployed in an 
RCS environment. 

 

We have upgraded the software on existing DBDS hardware elements such as the 
DNCS, GQAM modulator, and Digital Home Communications Terminals (DHCTs) 
to work with the SDV technology. These existing hardware elements are designed to 
interact with a new hardware device, the SDV Server. SDV also requires the 
functionality of the Netcrypt Bulk Encryptor. Standard Ethernet/IP switch-routers 
are integral to the operation of the system. 

To allow for an efficient use of network resources, the SDV system is designed to 
share QAM bandwidth between SDV and VOD services as well as traditional 
broadcast. For additional information on VOD interoperability, see Video-on-
Demand (on page 5). 

Note: We will work with your site to determine your specific hardware needs.