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Multilink –
In addition to the 1:1 connection between one transmitter and one
Multicast
receiver (unicast), the VideoJet 100 offers the possibility of receiv-
ing the signals from a transmitter with several receivers simulta-
neously. This is performed either by duplicating the data stream in
the transmitter and subsequent distribution to several receivers
(multi-unicast) or by distributing a single data stream in the network
proper to several receivers of a defined group (multicast).
Note
A precondition for multicast mode is a multicast-compatible network
using the UDP protocol and the IGMP protocol. Other group man-
agement protocols are not supported. The TCP protocol does not
support multicast connections.
Enable multilink H.323:
In multilink mode, the data stream is duplicated in the VideoJet 100
or in the network (group IP). The data are encoded according to the
H.323 standard and are thus compatible with other applications
(e.g. MS NetMeeting).
Benefits of the H.323 coding are a higher data rate with a lower
bandwidth in the network and a faster and more stable communica-
tion thanks to the robust data protocol.
The VideoJet 100 supports multilink mode with a maximum of
5 simultaneously connected receivers, whereby an audio voice link
is only possible to the first receiver (the first connection set up).
The transparent data link is maintained by the first device as for the
audio link, although the data connection is automatically torn down
after 15 seconds inactivity and another device can exchange trans-
parent data with the receiver.
For the multilink mode, the network does not have to be suitable for
multicast operation, as the VideoJet 100 is also multi-unicast com-
patible. The duplication of the data in the device requires a high
computing power and could under certain circumstances lead to a
deterioration in the image quality. In this case, you should reduce
the data rate of the transmitter slightly.
With the setting Enable multilink H.323 = On and Multicast group
IP address = 0.0.0.0, the device operates in multi-unicast mode
(copying the data streams in the device).
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VideoJet 100
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