fecframe-0----Page:13
1  2  3  4  5  6  7  8  9  10  11  12  13  14 

Considerations
In multicast-based sessions
All available FEC options are advertised to the receivers
Receivers subscribe to one or more desired multicast groups
The CDP determines whether the receivers need to send an answer back

In unicast-based sessions
Sender/receiver MAY use the offer/answer model
Either the sender or the receiver MAY set the FEC parameters
SDP capability negotiation MAY also be used

PPT Version