T-VIPS CP525 cMux, User Manual

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Functional Description 37
ID: um_tsmux CP525 cMux User’s Manual Rev. 5.20.12 (3944)
B
2
packets can be transmitted back-to-back at R
t
if bucket-2 has been able to build up for some
time due to higher priority queues having data to send.
5.9.7 TS Builder - Service and PID routing
The TS Builder reacts to the following events:
• Configuration changes that affect the output Transport Stream.
• New PSI/SI/PSIP table arrived on any input, or a table has timed out on the input.
• Table update in the downloaded PSI/SI/PSIP database.
• Changes to the list of present PIDs on any input.
When activated, the builder retrieves information from the different databases and from the
PID lists, to create new PID routing.
If PSI/SI/PSIP tables are configured for playout, they are generated and posted to the PSI/SI/PSIP
playout module for continuous packetisation and repetition.
FOR EACH PORT
MUX PORTS FIRST
Start Re-build
FOR EACH PRESENT PID
IN ORDER LOW TO HIGH
Activate Routing
FOR EACH PROGRAM
IN ORDER OF PAT
Map service
Map PID
Configured?
Default
pass?
Pass?
Configured?
Default
pass?
Pass?
(Unsign&&FW unsignalled) ||
FW unconditionally
Unsignalled?
No
No
No
Stop
Yes
Yes
Yes
Yes
Yes
No
No
No
Figure 5.7 Service routing
Services and PIDs are passed or stopped based on configuration choices made by the user or by
the system. Both services and components may be passed or stopped implicitly with a default
rule, or explicitly with an include or exclude rule.
Re-mapping of service ID and PID values requires an explicit routing rule.