Triple-Play Service Deployment

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RTSP
Latency
PAUSE
Latency
PLAY
Latency
STB
Browse VoD Guide
Play button active on Menu
Load appropriate
VoD server type RTSP client
HTTP Purchase movie (hashed PIN, account number)
HTTP Response OK (RTSP URI)
RTSP Describe
RTSP Response (VoD server type and movie details)
RTSP SETUP
RTSP Response
RTSP PLAY
RTSP Response
Media
RTSP
RTSP Response OK
RTSP PLAY
RTSP Response OK
Media
Chapter 7: Troubleshooting Video Service in the Field
VoD Server
Figure 7.4 Parameters for measurement of elapsed time for VoD request processing
Authorize purchase
and record transaction
From a test support viewpoint, it is the flow of video packets from
the various server locations (sometimes called server farms) across
the distribution network to the premises or subscriber that needs to
be validated, not the operation of the middleware. Thus, a VoD test
implementation that allows a simple RTSP signaling communication
between a tester and a VoD server, bypassing a middleware
negotiation, enables the VoD flows to be tested, but without the
complexity of supporting the middleware. Since middleware is
based on a universal standard, each vendor’s version is different
requiring the tester to support each version. Even new releases of
code would potentially impact the tester.Thus, this simple approach
avoids the cost and complexity of full middleware support and
reduces costs while maintaining a robust test methodology.
Flow
Flow Starts
Middleware
App Server