Extron electronics VN-Matrix 300 User Manual page 11

Multicast RTP
This transport method uses a real-time variation of UDP (User Datagram Protocol), called
RTP (Real Time Protocol). Multicast RTP allows a source to be displayed on any number of
displays.
IP Tx 1
LAN-1
LAN-2 TEST
STATUS
ALARM
VN-MATRIX 300 SERIES
SERIAL DIGITAL VIDEO OVER IP
RTP
Program Data
System Control
Monitoring &
Control
Figure 2. Using Multicast RTP to Display a Source on Numerous Displays
The source encoder uses RTP to send data to a multicast group. RTP provides very low
latency which is important for video transport. The RTP protocol compensates for jitter and
any breaks in the sequence of data during the transfer over an IP network.
This is the recommended transport method for real time video and audio data over an
IP network. However, because RTP is a connection-less protocol, data delivery is not
guaranteed. Where data packets are lost (such as due to excessive network traffic) the
VN-Matrix 300 carefully manages the data stream to minimize any image disruption.
IP Rx (a)
RTP
Program Data
LAN-1
LAN-2 TEST
STATUS
ALARM
IP Rx (b)
LAN-1
LAN-2 TEST
STATUS
ALARM
RTP
Program Data
Network
RTP
Program Data
IP Rx (c)
LAN-1
LAN-2 TEST
STATUS
ALARM
IP Rx (d)
LAN-1
LAN-2 TEST
STATUS
ALARM
LAN-1
LAN-2
STATUS
RTP ALARM
Program Data
may be part of the multicast group.
VN-MATRIX 300 SERIES
SERIAL DIGITAL VIDEO OVER IP
VN-MATRIX 300 SERIES
SERIAL DIGITAL VIDEO OVER IP
VN-MATRIX 300 SERIES
SERIAL DIGITAL VIDEO OVER IP
IP Rx n-1
VN-MATRIX 300 SERIES
IP Rx n
SERIAL DIGITAL VIDEO OVER IP
TEST
VN-MATRIX 300 SERIES
SERIAL DIGITAL VIDEO OVER IP
LAN-1
LAN-2 TEST
STATUS
ALARM
VN-MATRIX 300 SERIES
SERIAL DIGITAL VIDEO OVER IP
Any number of decoders
VN-Matrix 300 • Introduction 5