Multimedia over Packet
Olivier Hersent · 2010
This chapter divided into three sections. The first section contains: The 5-bit reception report count (RC), which is the number of report blocks included in this SR. The packet type (PT) is 200 for an SR. In order to avoid mixing a regular RTP packet with an SR, RTP packets should avoid payload types 72 and 73 which can be mistaken for SRs and RRs when the marker bit is set. The second section contains information on the RTP stream originated by this sender (synchronization source SSRC): The NTP timestamp of the sending time of this report. The RTP timestamp, which represents the same time as above, but with the same units and random offset as in the timestamps of RTP packets. The third section contains a set of reception report blocks, one for each source the sender knows about since the last RR or SR. Controlled Vocabulary Terms multimedia communication; transport protocols