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1.2.4
ISDN BRI Extender
The ISDN BRI Extender card is able to present a Basic Rate interface (2B+D) at a
remote site, by converting a standard terrestrial ISDN service into a synchronous
internal connection and then back again at the far end. In this way, ISDN services
may be simultaneously combined with any other services that the V100 can offer.
Since the card operates at the physical level only, it remains independent of layers 2 and 3 of the ISDN
network protocol and so can be used world-wide without restriction.
The card may be used in switched or permanent modes, allowing the user to take full advantage of the
flexible bandwidth control of the V100.
1.2.5
High Quality Audio
encoder/decoder algorithms may be different, with decoders automatically synchronising to the received
coding, sample rate and bit rate.
The V100 system is designed to operate on asymmetric links through its versatile clocking architecture. It
is therefore not only possible to select different coder/decoder types but to operate in simplex mode if
required.
1.2.6
ISDN Basic Rate Interface Link Card
An optional integral ISDN Terminal Adaptor (TA) may be fitted which provides access
to the ISDN2 service for backup or bandwidth-on-demand. This card is available with
either an 'S0/T0'-bus interface or a 'U0'-bus interface and is fitted in the Special
Options slot. International ISDN protocol variants are supported from the factory
upon request.
The ISDN TA is configured from its own menu page and routing page, which allows the user to enter a
primary and secondary ISDN number, set up call control parameters and select clock sources for locking
the rest of the system.
The ISDN TA offers connectivity with both land and sea based Inmarsat GAN services.
1.2.7
E1 Link Card
An optional E1 link card may be fitted to provide an aggregate service over an E1 interface.
V100 Versatile Multiplexer Technical Manual Version 2.2
Broadcast-quality audio is supported by the MPEG option card, which is a
complete MPEG/G.722/G.711 stereo audio Codec with a full range of MPEG1 and
MPEG2 sampling and compression rates. The card presents left and right
analogue channel interfaces on XLR connectors and also supports digital stereo
AES/EBU operation with connection via the left channel. The local
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