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RTCP operation

Get the UDP port number of the RTP call flow and increment it by 1 and use the same to filter the associated RTCP packets. For example, if the UDP port is 24950 , which is used for RTP packets, UDP port 24951 will be used for RTCP packets.

The preceding screenshot is a capture of one of the RTP flows between endpoints 14.50.201.48 and 172.18.110.203 that uses UDP port 23978. The SSRC associated with this RTP flow is 0x252eb528. By using UDP port 23979, we can identify the associated RTCP packet for this flow:

In the preceding ...

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