Functional Description
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ID: um_tsmux
CP525 cMux User’s Manual Rev. 5.20.12 (3944)
There are two main variants of the priority queue as presented in figure
.
The basic variant to the left, offers 1 queue for category C data and the 3 shown queues for
group D data. Priorites can be freely configured between the category C and D queues.
With the licence key
Advanced traffic shaping
installed, the advanced variant to the right is avail-
able, with an additional 14 queues for category C data, making a more advanced prioritisation
of C group PIDs possible.
The extended functionality of the advanced prioritisation queue is discussed in the following
5.9.5 Output Priority Queue Advanced
As mentioned in the previous sub section, the CP525 offers a licence protected feature to extend
the number of queues for routing of category C data elementary streams from 1 to 15.
R
b
R
b
R
b
R
b
C1
C2
C15
C3
R
b
C14
R
b
R
b
R
b
R
b
C1
C2
C15
C3
R
b
C14
Group 1
Group N
Single queues
Grouped queues
17
16
3
5
4
N
3
Figure 5.5
Basic and Advanced Priority queues
There are two ways to use the category C queues as shown to the left and right in figure
Single queues
In this mode each queue is operated independently with their own rate shaping and pri-
ority assignment on the output MUX. With this operation mode there is only one level of
prioritisation.
Grouped queues
Category C Queues can also be grouped to operate on a common rate shaper, creating a
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