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The MDC-3661 takes a 2048 kb/s G.703 (E1) signal
and packs it as private data into a DVB compliant,
188 or 204 byte (selectable), ASI transport stream. On board switch
settings set the ASI program number to a choice of 8 settings. This allows it to pass through ASI style
of circuits such IRT's ASI Mux/DeMux and fibre
modules as well as ASI statistical multiplexers.
The MDC-3661 will also simultaneously decode an
appropriate ASI input into 2048 kb/s G.703 (E1).
In the absence of an ASI input, the G.703 output is
AIS (Alarm Indication Signal).
In the absence of a
valid G.703 input, AIS is packed into a 188 or 204 byte (selectable) ASI
transport stream.
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For the G.703 input, front panel LEDs indicate if a
G.703 input is present and if it is AIS. For the ASI
input, front panel LEDs indicate if the ASI is present,
if the ASI is at the correct input rate, if there is a sync
error, or if the program number of the input signal is
missing or does not match the on board switch
setting.
External relay contact alarms also are available on
the rear connector assembly.
The MDC-3661 is suitable for mounting in all IRT's
standard 1RU and 3RU frames.
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