Sun Microsystems MEDIACENTER 2.1 - Manual (Page 112)

7-2 Sun MediaCenter Server Administrator’s Guide • December 1997
controlled by the Content Manager (CM). Utilities that use the CM are described in
Chapter 5 and Chapter 6. The CM server and client APIs are described in the Sun
MediaCenter Server Programmer’s Guide.
FIGURE 7-1 illustrates the separation of data and control flows with respect to the Sun
MediaCenter server.
FIGURE 7-1 Separation of Data, Content Management, and Control
The server data output mechanism supports two types of network data links:
SunATM and SunFastEthernet (100BaseT). The data formats and addressing for each
type of link is described in the following sections.
7.2 ATM Encapsulation
This subsection describes the different ways the ATM data packets that are output
from the server can be encapsulated.
7.2.1 MPEG-2 Transport Stream Packet Encapsulation
The encapsulation for MPEG-2 Transport Streams is the default specification of the
standard public document from ATM Forum document 95-0012R5 (see reference [1]
on page 7-9), titled Service Aspects and Applications. In this document, the chapter
“Network Adaptation” describes the required default ATM packet for video to be
made up of two MPEG Transport packets encapsulated in a single ATM AAL-5
packet. Each MPEG-2 Transport packet is 188 bytes long.
Media Stream Manager
Control
Data
Sun MediaCenter
ATM/LAN
Server
Content
Content Manager