Nucomm debuts the Messenger IP Encapsulator/Decapsulator at HD World 2007
Inc., a provider of digital and analog microwave systems for the broadcast
industry, common carrier, cable, government, military and international
marketplace, showcased its new Messenger IP Encapsulator/Decapsulator at HD
Word 2007. The Nucomm Messenger system enables broadband IP connectivity
between an ENG truck or OB Van and the broadcast studio. Designed to support
today’s emerging, distributed news editing workflows, the Nucomm Messenger
makes it easier for television news stories to be edited in the field and
delivered to the studio over alternative networks.
an IP network in place, other applications, such as remote queuing and remote
truck control, can also run between the studio and the ENG vehicle.
Nucomm Messenger can be used in trickle or broadband mode.
In trickle mode, live video and IP traffic
are sent simultaneously; the live video reduces the IP traffic to a rate in the
range of 100 kbps to 1 Mbps. The Messenger does this transfer by replacing null
packets with IP packets.
the broadband mode, nearly the entire link is dedicated to IP traffic. The user
either turns off the MPEG encoder or removes the video source to the encoder,
creating a transport stream nearly full of null packets. In this mode, the
Encapsulator responds automatically to the changing network conditions.
complete Nucomm Messenger system consists of a 1 RU Encapsulator and a 1 RU
Decapsulator. IP data from the news gathering vehicle to the studio flows
through the existing ENG /
The outbound IP traffic enters the Messenger IP Encapsulator. The IP traffic is
encapsulated into the MPEG stream from the MPEG encoder in the ENG transmitter.
The resulting ASI stream, containing the IP data and video data, returns to the
ENG microwave transmitter, where it is transmitted back to the studio.