The Author:
Pierre Maillat is Head of Engineering
and Maintenance at Canal+. He is
in charge of
the two-day
removal of the
NEXUS to the
new premises
this summer.

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In Constant Flux
The French broadcasting
service Canal+
already knew about
the exceptional
reliability and flexibility
of NEXUS. However, it
was adaptability that
tipped the balance
for the audio router
since the broadcasters
were looking for a
main control room
that would be
scalable.
The Canal+ group operates on a grand
scale, developing new program formats
and producing all the sports programs
for members of the group. For this work,
flexible technology is a major requirement.
Division of Labour
Since 2002, two NEXUS STARs and 11
base devices have been responsible for
audio routing in the main control room.
Identically wired and with each router
connected to each base device, the two
STARs divide the signal routing between
them. This system architecture was
chosen to give excellent fault tolerance,
due to redundancy, and plenty of room for
expansion. Initially, the configuration looked rather
different: The first NEXUS installation at
Canal+ in 1999 comprised nine base
devices interconnected to form a kind of
central router. Technological growth was
already a major consideration, soon
accomplished thanks to the STAR.
Then, as now, the NEXUS – plus the video
router and intercom-system feeds - is controlled
using a software package by
French manufacturer, Netia.
The Next Step
Centralized structure is a particular feature
of the Canal+ installation. The two
STARs and most of the base devices are
centrally located in the main control room,
and signal routing to the other control
rooms is conventional, using cables.
This will soon change as Canal+ are
moving to new premises in summer 2004.
Once again, the STARs will be installed in
the main control room, but the majority of
base devices will be networked by fibre
optics to shift them closer to the control
rooms. NEXUS will also allow new studios
to be connected to the main switching
room via fibre-optic cables. The news program,
for example, is currently produced
at Montparnasse and will be moved to a
building opposite the new main complex,
with fibre-optics crossing the river Seine.
Olympic Starting Gun
The removal exercise will be exciting. Immediately
after the Olympics, a highlight
for the sports channel, the video edit
suites will move, followed by the production
department including the main
switching room and NEXUS – without
interrupting the operation!
The NEXUS will undergo more changes
after the move. Extended integration
with the intercom is planned, as is Dolby E
data forwarding. Of course, today nobody
knows how the Canal+ group will
expand in the future. Thanks to NEXUS
and the STARs, the possibilities are
endless!
The Canal+ Group
Canal+ is a French commercial
subscription channel broadcaster
based in Paris and a consortium of
various radio and TV providers. It
offers a large number of channels
ranging from a news channel
through themed channels such as
Sport+ to documentary and movie
channels. Canal+ also plays an
important role in promoting film
production in France. |