Cisco D9054 Installation And Operation Manual page 186

Setting Up the IP Streaming Output,
When you select the ToS/CoS (Precedence), you can select from one of five
different settings: Normal, Min. Cost, Max. Reliability, Max. Throughput, and
Min. Delay. The default setting for each field is Normal.
• Set the CoS (Precedence) mode settings. Some networks offer service
precedence, which treats high precedence traffic with a higher priority than
other traffic (by accepting only traffic above a certain precedence at the time
of high load). Choose from Routine, Priority, Immediate, Flash, Flash
Override, Critic ECP, Internetwork Control or Network Control. The default
is Routine.
When you select Differentiated Service as the QoS mode, you need to set the
Differentiated Service "Code Point" (DSCP) for each Stream ID. The Code Point
is 6-bit field which indicates the type of service the packet carries when the
encoder is connected to a router (i.e., to set the priority).
When you select Custom as the QoS Mode, set the 8-bit field that contains the
QoS bits. This value is a multiple of the value set for the Differentiated Service
Code point.
20. Click Apply.
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