Extron Electronics VN-Matrix 300 User Guide - Manual (Page 11)

VN-Matrix 300 • Introduction 5
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.
Network
VN-MATRIX 300 SERIES
SERIAL DIGITAL VIDEO OVER IP
LAN-1
LAN-2
STATUS
ALARM
TEST
VN-MATRIX 300 SERIES
SERIAL DIGITAL VIDEO OVER IP
LAN-1
LAN-2
STATUS
ALARM
TEST
VN-MATRIX 300 SERIES
SERIAL DIGITAL VIDEO OVER IP
LAN-1
LAN-2
STATUS
ALARM
TEST
VN-MATRIX 300 SERIES
SERIAL DIGITAL VIDEO OVER IP
LAN-1
LAN-2
STATUS
ALARM
TEST
VN-MATRIX 300 SERIES
SERIAL DIGITAL VIDEO OVER IP
LAN-1
LAN-2
STATUS
ALARM
TEST
VN-MATRIX 300 SERIES
SERIAL DIGITAL VIDEO OVER IP
LAN-1
LAN-2
STATUS
ALARM
TEST
VN-MATRIX 300 SERIES
SERIAL DIGITAL VIDEO OVER IP
LAN-1
LAN-2
STATUS
ALARM
TEST
Monitoring &
Control
IP Tx 1 IP Rx (b)
IP Rx (a)
IP Rx (c)
IP Rx (d)
IP Rx n -1
IP Rx n
Any number of decoders
may be part of the multicast group.
RTP
Program Data
RTP
Program Data
RTP
Program Data
RTP
Program Data
RTP
Program Data
System 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.