PRISM MPI2-25 and MPX2-25 Media Analysis Platform User Manual
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o
CSRC
: Identifies the Contributing Source IDs. This value should be
set to zero.
o
Marker
: This value should be set to 1 to indicate the last Media
Datagram of the video frame. The value is set to 0 for all other Media
Datagrams and should be 0 for most packets.
o
Payload type
: Identifies the type of RTP payload.
o
Sequence number
: RTP sequence counter that changes by one for
each RTP Media Datagram that is sent.
NOTE.
The status indicator turns red if the received RTP sequence
numbers do not change by 1 on every packet.
•
Time Stamp
: The timestamp reflects the sampling instant of the first octet in
the RTP datagram. This value can be used to determine packet sequence
errors and jitter calculations to be made.
NOTE.
The status indicator will turn red if the Time Stamp field does not change at
48 kHz rate on every group of audio samples.
•
SSRC
: Identifies the Synchronization Source ID and is set in compliance with
RFC3550. This identifier is chosen randomly and should be unique so no two
SSRC have the same value with an RTP session.
Data tab display
Select the DATA tab to view the status of the data in the stream. (See
Figure 142
.)
Figure 142: IP Session application – DATA tab display
