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.